Annotations: 3JCU

Domain Annotation: SCOP2 Classification SCOP2 Database Homepage

Chains	Type	Family Name	Domain Identifier	Family Identifier	Provenance Source (Version)
A	SCOP2B Superfamily	Bacterial photosystem II reaction centre L and M subunits	8098918	3000736	SCOP2B (2022-06-29)
Z [auth a]	SCOP2 Family	Bacterial photosystem II reaction centre L and M subunits	8098917	4002035	SCOP2 (2022-06-29)
Z [auth a]	SCOP2 Superfamily	Bacterial photosystem II reaction centre L and M subunits	8098918	3000736	SCOP2 (2022-06-29)
IA [auth j]	SCOP2 Family	PsbJ-like	8100585	4002642	SCOP2 (2022-06-29)
IA [auth j]	SCOP2 Superfamily	Photosystem II reaction center protein J PsbJ	8100586	3001534	SCOP2 (2022-06-29)
J	SCOP2B Superfamily	Photosystem II reaction center protein J PsbJ	8100586	3001534	SCOP2B (2022-06-29)
K	SCOP2B Superfamily	Photosystem II reaction center protein K PsbK	8098480	3001585	SCOP2B (2022-06-29)
JA [auth k]	SCOP2 Family	PsbK-like	8098479	4002673	SCOP2 (2022-06-29)
JA [auth k]	SCOP2 Superfamily	Photosystem II reaction center protein K PsbK	8098480	3001585	SCOP2 (2022-06-29)
L	SCOP2B Superfamily	Photosystem II reaction center protein L PsbL	8098792	3001523	SCOP2B (2022-06-29)
KA [auth l]	SCOP2 Family	PsbL-like	8098791	4002634	SCOP2 (2022-06-29)
KA [auth l]	SCOP2 Superfamily	Photosystem II reaction center protein L PsbL	8098792	3001523	SCOP2 (2022-06-29)
M	SCOP2B Superfamily	Photosystem II reaction center protein M PsbM	8098840	3001573	SCOP2B (2022-06-29)
LA [auth m]	SCOP2 Family	PsbM-like	8098839	4002664	SCOP2 (2022-06-29)
LA [auth m]	SCOP2 Superfamily	Photosystem II reaction center protein M PsbM	8098840	3001573	SCOP2 (2022-06-29)
NA [auth o]	SCOP2 Family	PsbO-like	8098487	4002770	SCOP2 (2022-06-29)
NA [auth o]	SCOP2 Superfamily	OMPA barrel-like	8098488	3000208	SCOP2 (2022-06-29)
O	SCOP2B Superfamily	OMPA barrel-like	8098488	3000208	SCOP2B (2022-06-29)
OA [auth p]	SCOP2B Superfamily	Mog1p/PsbP-like	8078149	3000396	SCOP2B (2022-06-29)
P	SCOP2B Superfamily	Mog1p/PsbP-like	8078149	3000396	SCOP2B (2022-06-29)
PA [auth q]	SCOP2B Superfamily	PsbQ-like	8004513	3000169	SCOP2B (2022-06-29)
Q	SCOP2B Superfamily	PsbQ-like	8004513	3000169	SCOP2B (2022-06-29)
QA [auth r]	SCOP2 Family	Chlorophyll a-b binding protein	8096267	4001763	SCOP2 (2022-06-29)
QA [auth r]	SCOP2 Superfamily	Chlorophyll a-b binding protein	8096268	3000343	SCOP2 (2022-06-29)
R	SCOP2B Superfamily	Chlorophyll a-b binding protein	8096268	3000343	SCOP2B (2022-06-29)
S	SCOP2 Family	Chlorophyll a-b binding protein	8096269	4001763	SCOP2 (2022-06-29)
S	SCOP2 Superfamily	Chlorophyll a-b binding protein	8096270	3000343	SCOP2 (2022-06-29)
RA [auth s]	SCOP2B Superfamily	Chlorophyll a-b binding protein	8096270	3000343	SCOP2B (2022-06-29)
AA [auth b]	SCOP2 Family	Photosystem II antenna protein-like	8098269	4002735	SCOP2 (2022-06-29)
AA [auth b]	SCOP2 Superfamily	Photosystem II antenna protein-like	8098270	3001674	SCOP2 (2022-06-29)
B	SCOP2B Superfamily	Photosystem II antenna protein-like	8098270	3001674	SCOP2B (2022-06-29)
Y [auth Z]	SCOP2B Superfamily	PsbZ-like	8100588	3001624	SCOP2B (2022-06-29)
XA [auth z]	SCOP2 Family	PsbZ-like	8100587	4002701	SCOP2 (2022-06-29)
XA [auth z]	SCOP2 Superfamily	PsbZ-like	8100588	3001624	SCOP2 (2022-06-29)
BA [auth c]	SCOP2B Superfamily	Photosystem II antenna protein-like	8098288	3001674	SCOP2B (2022-06-29)
C	SCOP2 Family	Photosystem II antenna protein-like	8098287	4002735	SCOP2 (2022-06-29)
C	SCOP2 Superfamily	Photosystem II antenna protein-like	8098288	3001674	SCOP2 (2022-06-29)
D	SCOP2B Superfamily	Bacterial photosystem II reaction centre L and M subunits	8098292	3000736	SCOP2B (2022-06-29)
CA [auth d]	SCOP2 Family	Bacterial photosystem II reaction centre L and M subunits	8098291	4002035	SCOP2 (2022-06-29)
CA [auth d]	SCOP2 Superfamily	Bacterial photosystem II reaction centre L and M subunits	8098292	3000736	SCOP2 (2022-06-29)
DA [auth e]	SCOP2 Family	Cytochrome b559 subunits	8098913	4002681	SCOP2 (2022-06-29)
DA [auth e]	SCOP2 Superfamily	Cytochrome b559 subunits	8098914	3001602	SCOP2 (2022-06-29)
E	SCOP2B Superfamily	Cytochrome b559 subunits	8098914	3001602	SCOP2B (2022-06-29)
EA [auth f]	SCOP2 Family	Cytochrome b559 subunits	8098785	4002681	SCOP2 (2022-06-29)
EA [auth f]	SCOP2 Superfamily	Cytochrome b559 subunits	8098786	3001602	SCOP2 (2022-06-29)
F	SCOP2B Superfamily	Cytochrome b559 subunits	8098786	3001602	SCOP2B (2022-06-29)
N	SCOP2B Superfamily	Chlorophyll a-b binding protein	8041052	3000343	SCOP2B (2022-06-29)
WA [auth y]	SCOP2B Superfamily	Chlorophyll a-b binding protein	8041052	3000343	SCOP2B (2022-06-29)
FA [auth g]	SCOP2B Superfamily	Chlorophyll a-b binding protein	8041052	3000343	SCOP2B (2022-06-29)
G	SCOP2B Superfamily	Chlorophyll a-b binding protein	8041052	3000343	SCOP2B (2022-06-29)
MA [auth n]	SCOP2B Superfamily	Chlorophyll a-b binding protein	8041052	3000343	SCOP2B (2022-06-29)
X [auth Y]	SCOP2B Superfamily	Chlorophyll a-b binding protein	8041052	3000343	SCOP2B (2022-06-29)
GA [auth h]	SCOP2 Family	PsbH-like	8098279	4002649	SCOP2 (2022-06-29)
GA [auth h]	SCOP2 Superfamily	Photosystem II 10 kDa phosphoprotein PsbH	8098280	3001547	SCOP2 (2022-06-29)
H	SCOP2B Superfamily	Photosystem II 10 kDa phosphoprotein PsbH	8098280	3001547	SCOP2B (2022-06-29)
HA [auth i]	SCOP2 Family	PsbI-like	8098835	4002676	SCOP2 (2022-06-29)
HA [auth i]	SCOP2 Superfamily	Photosystem II reaction center protein I PsbI	8098836	3001590	SCOP2 (2022-06-29)
I	SCOP2B Superfamily	Photosystem II reaction center protein I PsbI	8098836	3001590	SCOP2B (2022-06-29)

Domain Annotation: ECOD Classification ECOD Database Homepage

Chains	Family Name	Domain Identifier	Architecture	Possible Homology	Homology	Topology	Family	Provenance Source (Version)
A	Photo_RC	e3jcuA1	A: alpha bundles	X: Bacterial photosystem II reaction centre L and M subunits-like (From Topology)	H: Bacterial photosystem II reaction centre L and M subunits-like (From Topology)	T: Bacterial photosystem II reaction centre L and M subunits-like	F: Photo_RC	ECOD (1.6)
Z [auth a]	Photo_RC	e3jcua1	A: alpha bundles	X: Bacterial photosystem II reaction centre L and M subunits-like (From Topology)	H: Bacterial photosystem II reaction centre L and M subunits-like (From Topology)	T: Bacterial photosystem II reaction centre L and M subunits-like	F: Photo_RC	ECOD (1.6)
IA [auth j]	PsbJ	e3jcuj1	A: extended segments	X: Photosystem II reaction center protein J, PsbJ (From Topology)	H: Photosystem II reaction center protein J, PsbJ (From Topology)	T: Photosystem II reaction center protein J, PsbJ	F: PsbJ	ECOD (1.6)
J	PsbJ	e3jcuJ1	A: extended segments	X: Photosystem II reaction center protein J, PsbJ (From Topology)	H: Photosystem II reaction center protein J, PsbJ (From Topology)	T: Photosystem II reaction center protein J, PsbJ	F: PsbJ	ECOD (1.6)
K	PsbK	e3jcuK1	A: extended segments	X: Photosystem II reaction center protein K, PsbK (From Topology)	H: Photosystem II reaction center protein K, PsbK (From Topology)	T: Photosystem II reaction center protein K, PsbK	F: PsbK	ECOD (1.6)
JA [auth k]	PsbK	e3jcuk1	A: extended segments	X: Photosystem II reaction center protein K, PsbK (From Topology)	H: Photosystem II reaction center protein K, PsbK (From Topology)	T: Photosystem II reaction center protein K, PsbK	F: PsbK	ECOD (1.6)
L	PsbL	e3jcuL1	A: extended segments	X: Photosystem II reaction center protein L, PsbL (From Topology)	H: Photosystem II reaction center protein L, PsbL (From Topology)	T: Photosystem II reaction center protein L, PsbL	F: PsbL	ECOD (1.6)
KA [auth l]	PsbL	e3jcul1	A: extended segments	X: Photosystem II reaction center protein L, PsbL (From Topology)	H: Photosystem II reaction center protein L, PsbL (From Topology)	T: Photosystem II reaction center protein L, PsbL	F: PsbL	ECOD (1.6)
M	PsbM	e3jcuM1	A: extended segments	X: Photosystem II reaction center protein M, PsbM (From Topology)	H: Photosystem II reaction center protein M, PsbM (From Topology)	T: Photosystem II reaction center protein M, PsbM	F: PsbM	ECOD (1.6)
LA [auth m]	PsbM	e3jcum1	A: extended segments	X: Photosystem II reaction center protein M, PsbM (From Topology)	H: Photosystem II reaction center protein M, PsbM (From Topology)	T: Photosystem II reaction center protein M, PsbM	F: PsbM	ECOD (1.6)
NA [auth o]	MSP	e3jcuo1	A: beta barrels	X: Outer membrane meander beta-barrels	H: OMPA-like (From Topology)	T: OMPA-like	F: MSP	ECOD (1.6)
O	MSP	e3jcuO1	A: beta barrels	X: Outer membrane meander beta-barrels	H: OMPA-like (From Topology)	T: OMPA-like	F: MSP	ECOD (1.6)
OA [auth p]	PsbP	e3jcup1	A: a+b three layers	X: Mog1p/PsbP-like	H: Mog1p/PsbP-like (From Topology)	T: Mog1p/PsbP-like	F: PsbP	ECOD (1.6)
P	PsbP	e3jcuP1	A: a+b three layers	X: Mog1p/PsbP-like	H: Mog1p/PsbP-like (From Topology)	T: Mog1p/PsbP-like	F: PsbP	ECOD (1.6)
PA [auth q]	PsbQ	e3jcuq1	A: alpha bundles	X: Four-helical up-and-down bundle	H: Oxygen-evolving enhancer protein 3 (From Topology)	T: Oxygen-evolving enhancer protein 3	F: PsbQ	ECOD (1.6)
Q	PsbQ	e3jcuQ1	A: alpha bundles	X: Four-helical up-and-down bundle	H: Oxygen-evolving enhancer protein 3 (From Topology)	T: Oxygen-evolving enhancer protein 3	F: PsbQ	ECOD (1.6)
QA [auth r]	Chloroa_b-bind	e3jcur1	A: extended segments	X: Chlorophyll a-b binding protein (From Topology)	H: Chlorophyll a-b binding protein (From Topology)	T: Chlorophyll a-b binding protein	F: Chloroa_b-bind	ECOD (1.6)
R	Chloroa_b-bind	e3jcuR1	A: extended segments	X: Chlorophyll a-b binding protein (From Topology)	H: Chlorophyll a-b binding protein (From Topology)	T: Chlorophyll a-b binding protein	F: Chloroa_b-bind	ECOD (1.6)
S	Chloroa_b-bind	e3jcuS1	A: extended segments	X: Chlorophyll a-b binding protein (From Topology)	H: Chlorophyll a-b binding protein (From Topology)	T: Chlorophyll a-b binding protein	F: Chloroa_b-bind	ECOD (1.6)
RA [auth s]	Chloroa_b-bind	e3jcus1	A: extended segments	X: Chlorophyll a-b binding protein (From Topology)	H: Chlorophyll a-b binding protein (From Topology)	T: Chlorophyll a-b binding protein	F: Chloroa_b-bind	ECOD (1.6)
SA [auth t]	PsbT	e3jcut1	A: extended segments	X: Photosystem II reaction center protein T, PsbT (From Topology)	H: Photosystem II reaction center protein T, PsbT (From Topology)	T: Photosystem II reaction center protein T, PsbT	F: PsbT	ECOD (1.6)
T	PsbT	e3jcuT1	A: extended segments	X: Photosystem II reaction center protein T, PsbT (From Topology)	H: Photosystem II reaction center protein T, PsbT (From Topology)	T: Photosystem II reaction center protein T, PsbT	F: PsbT	ECOD (1.6)
AA [auth b]	PSII_1st	e3jcub1	A: alpha bundles	X: Photosystem II antenna protein-like (From Topology)	H: Photosystem II antenna protein-like (From Topology)	T: Photosystem II antenna protein-like	F: PSII_1st	ECOD (1.6)
AA [auth b]	PSII_2nd	e3jcub2	A: a+b two layers	X: Photosystem II antenna protein PsbB insertion domain (From Topology)	H: Photosystem II antenna protein PsbB insertion domain (From Topology)	T: Photosystem II antenna protein PsbB insertion domain	F: PSII_2nd	ECOD (1.6)
B	PSII_1st	e3jcuB2	A: alpha bundles	X: Photosystem II antenna protein-like (From Topology)	H: Photosystem II antenna protein-like (From Topology)	T: Photosystem II antenna protein-like	F: PSII_1st	ECOD (1.6)
B	PSII_2nd	e3jcuB1	A: a+b two layers	X: Photosystem II antenna protein PsbB insertion domain (From Topology)	H: Photosystem II antenna protein PsbB insertion domain (From Topology)	T: Photosystem II antenna protein PsbB insertion domain	F: PSII_2nd	ECOD (1.6)
UA [auth w]	PsbW	e3jcuw1	A: extended segments	X: Photosystem II reaction center W protein, chloroplastic (From Topology)	H: Photosystem II reaction center W protein, chloroplastic (From Topology)	T: Photosystem II reaction center W protein, chloroplastic	F: PsbW	ECOD (1.6)
V [auth W]	PsbW	e3jcuW1	A: extended segments	X: Photosystem II reaction center W protein, chloroplastic (From Topology)	H: Photosystem II reaction center W protein, chloroplastic (From Topology)	T: Photosystem II reaction center W protein, chloroplastic	F: PsbW	ECOD (1.6)
VA [auth x]	PsbX	e3jcux1	A: extended segments	X: Photosystem II PsbX protein (From Topology)	H: Photosystem II PsbX protein (From Topology)	T: Photosystem II PsbX protein	F: PsbX	ECOD (1.6)
W [auth X]	PsbX	e3jcuX1	A: extended segments	X: Photosystem II PsbX protein (From Topology)	H: Photosystem II PsbX protein (From Topology)	T: Photosystem II PsbX protein	F: PsbX	ECOD (1.6)
Y [auth Z]	Ycf9	e3jcuZ1	A: extended segments	X: PsbZ-like (From Topology)	H: PsbZ-like (From Topology)	T: PsbZ-like	F: Ycf9	ECOD (1.6)
XA [auth z]	Ycf9	e3jcuz1	A: extended segments	X: PsbZ-like (From Topology)	H: PsbZ-like (From Topology)	T: PsbZ-like	F: Ycf9	ECOD (1.6)
BA [auth c]	PSII_1st	e3jcuc1	A: alpha bundles	X: Photosystem II antenna protein-like (From Topology)	H: Photosystem II antenna protein-like (From Topology)	T: Photosystem II antenna protein-like	F: PSII_1st	ECOD (1.6)
C	PSII_1st	e3jcuC1	A: alpha bundles	X: Photosystem II antenna protein-like (From Topology)	H: Photosystem II antenna protein-like (From Topology)	T: Photosystem II antenna protein-like	F: PSII_1st	ECOD (1.6)
D	Photo_RC	e3jcuD1	A: alpha bundles	X: Bacterial photosystem II reaction centre L and M subunits-like (From Topology)	H: Bacterial photosystem II reaction centre L and M subunits-like (From Topology)	T: Bacterial photosystem II reaction centre L and M subunits-like	F: Photo_RC	ECOD (1.6)
CA [auth d]	Photo_RC	e3jcud1	A: alpha bundles	X: Bacterial photosystem II reaction centre L and M subunits-like (From Topology)	H: Bacterial photosystem II reaction centre L and M subunits-like (From Topology)	T: Bacterial photosystem II reaction centre L and M subunits-like	F: Photo_RC	ECOD (1.6)
DA [auth e]	Cytochrom_B559a	e3jcue1	A: extended segments	X: Cytochrome b559 subunits (From Topology)	H: Cytochrome b559 subunits (From Topology)	T: Cytochrome b559 subunits	F: Cytochrom_B559a	ECOD (1.6)
E	Cytochrom_B559a	e3jcuE1	A: extended segments	X: Cytochrome b559 subunits (From Topology)	H: Cytochrome b559 subunits (From Topology)	T: Cytochrome b559 subunits	F: Cytochrom_B559a	ECOD (1.6)
EA [auth f]	Cytochrom_B559	e3jcuf1	A: extended segments	X: Cytochrome b559 subunits (From Topology)	H: Cytochrome b559 subunits (From Topology)	T: Cytochrome b559 subunits	F: Cytochrom_B559	ECOD (1.6)
F	Cytochrom_B559	e3jcuF1	A: extended segments	X: Cytochrome b559 subunits (From Topology)	H: Cytochrome b559 subunits (From Topology)	T: Cytochrome b559 subunits	F: Cytochrom_B559	ECOD (1.6)
N	Chloroa_b-bind	e3jcuN1	A: extended segments	X: Chlorophyll a-b binding protein (From Topology)	H: Chlorophyll a-b binding protein (From Topology)	T: Chlorophyll a-b binding protein	F: Chloroa_b-bind	ECOD (1.6)
WA [auth y]	Chloroa_b-bind	e3jcuy1	A: extended segments	X: Chlorophyll a-b binding protein (From Topology)	H: Chlorophyll a-b binding protein (From Topology)	T: Chlorophyll a-b binding protein	F: Chloroa_b-bind	ECOD (1.6)
FA [auth g]	Chloroa_b-bind	e3jcug1	A: extended segments	X: Chlorophyll a-b binding protein (From Topology)	H: Chlorophyll a-b binding protein (From Topology)	T: Chlorophyll a-b binding protein	F: Chloroa_b-bind	ECOD (1.6)
G	Chloroa_b-bind	e3jcuG1	A: extended segments	X: Chlorophyll a-b binding protein (From Topology)	H: Chlorophyll a-b binding protein (From Topology)	T: Chlorophyll a-b binding protein	F: Chloroa_b-bind	ECOD (1.6)
MA [auth n]	Chloroa_b-bind	e3jcun1	A: extended segments	X: Chlorophyll a-b binding protein (From Topology)	H: Chlorophyll a-b binding protein (From Topology)	T: Chlorophyll a-b binding protein	F: Chloroa_b-bind	ECOD (1.6)
X [auth Y]	Chloroa_b-bind	e3jcuY1	A: extended segments	X: Chlorophyll a-b binding protein (From Topology)	H: Chlorophyll a-b binding protein (From Topology)	T: Chlorophyll a-b binding protein	F: Chloroa_b-bind	ECOD (1.6)
GA [auth h]	PsbH	e3jcuh1	A: extended segments	X: Photosystem II 10 kDa phosphoprotein PsbH (From Topology)	H: Photosystem II 10 kDa phosphoprotein PsbH (From Topology)	T: Photosystem II 10 kDa phosphoprotein PsbH	F: PsbH	ECOD (1.6)
H	PsbH	e3jcuH1	A: extended segments	X: Photosystem II 10 kDa phosphoprotein PsbH (From Topology)	H: Photosystem II 10 kDa phosphoprotein PsbH (From Topology)	T: Photosystem II 10 kDa phosphoprotein PsbH	F: PsbH	ECOD (1.6)
HA [auth i]	PsbI	e3jcui1	A: extended segments	X: Photosystem II reaction center protein I, PsbI (From Topology)	H: Photosystem II reaction center protein I, PsbI (From Topology)	T: Photosystem II reaction center protein I, PsbI	F: PsbI	ECOD (1.6)
I	PsbI	e3jcuI1	A: extended segments	X: Photosystem II reaction center protein I, PsbI (From Topology)	H: Photosystem II reaction center protein I, PsbI (From Topology)	T: Photosystem II reaction center protein I, PsbI	F: PsbI	ECOD (1.6)

Domain Annotation: CATH CATH Database Homepage

Chain	Domain	Class	Architecture	Topology	Homology	Provenance Source (Version)
NA [auth o]	2.40.160.30	Mainly Beta	Beta Barrel	Porin	Photosystem II, cytochrome c-550 precursor	CATH (4.3.0)
NA [auth o]	3.30.2050.10	Alpha Beta	2-Layer Sandwich	photosynthetic oxygen evolving center fold	photosynthetic oxygen evolving center domain	CATH (4.3.0)
O	2.40.160.30	Mainly Beta	Beta Barrel	Porin	Photosystem II, cytochrome c-550 precursor	CATH (4.3.0)
O	3.30.2050.10	Alpha Beta	2-Layer Sandwich	photosynthetic oxygen evolving center fold	photosynthetic oxygen evolving center domain	CATH (4.3.0)
OA [auth p]	3.40.1000.10	Alpha Beta	3-Layer(aba) Sandwich	Protein Transport Mog1p	Chain A	CATH (4.3.0)
P	3.40.1000.10	Alpha Beta	3-Layer(aba) Sandwich	Protein Transport Mog1p	Chain A	CATH (4.3.0)
PA [auth q]	1.20.120.290	Mainly Alpha	Up-down Bundle	Four Helix Bundle (Hemerythrin (Met), subunit A)	Oxygen-evolving enhancer protein 3 (PsbQ), four-helix up-down bundle	CATH (4.3.0)
Q	1.20.120.290	Mainly Alpha	Up-down Bundle	Four Helix Bundle (Hemerythrin (Met), subunit A)	Oxygen-evolving enhancer protein 3 (PsbQ), four-helix up-down bundle	CATH (4.3.0)
S	1.10.3460.10	Mainly Alpha	Orthogonal Bundle	Chlorophyll a-b binding protein	Chlorophyll a/b binding protein domain	CATH (4.3.0)
RA [auth s]	1.10.3460.10	Mainly Alpha	Orthogonal Bundle	Chlorophyll a-b binding protein	Chlorophyll a/b binding protein domain	CATH (4.3.0)
AA [auth b]	3.10.680.10	Alpha Beta	Roll	Photosystem II CP47 reaction center protein	Photosystem II CP47 reaction center protein	CATH (4.3.0)
B	3.10.680.10	Alpha Beta	Roll	Photosystem II CP47 reaction center protein	Photosystem II CP47 reaction center protein	CATH (4.3.0)
Y [auth Z]	1.10.287.740	Mainly Alpha	Orthogonal Bundle	Helix Hairpins	Photosystem II PsbZ, reaction centre	CATH (4.3.0)
XA [auth z]	1.10.287.740	Mainly Alpha	Orthogonal Bundle	Helix Hairpins	Photosystem II PsbZ, reaction centre	CATH (4.3.0)
BA [auth c]	1.10.10.670	Mainly Alpha	Orthogonal Bundle	Arc Repressor Mutant, subunit A	photosystem ii from thermosynechococcus elongatus	CATH (4.3.0)
C	1.10.10.670	Mainly Alpha	Orthogonal Bundle	Arc Repressor Mutant, subunit A	photosystem ii from thermosynechococcus elongatus	CATH (4.3.0)
DA [auth e]	1.20.5.860	Mainly Alpha	Up-down Bundle	Single alpha-helices involved in coiled-coils or other helix-helix interfaces	Photosystem II cytochrome b559, alpha subunit	CATH (4.3.0)
E	1.20.5.860	Mainly Alpha	Up-down Bundle	Single alpha-helices involved in coiled-coils or other helix-helix interfaces	Photosystem II cytochrome b559, alpha subunit	CATH (4.3.0)
N	1.10.3460.10	Mainly Alpha	Orthogonal Bundle	Chlorophyll a-b binding protein	Chlorophyll a/b binding protein domain	CATH (4.3.0)
WA [auth y]	1.10.3460.10	Mainly Alpha	Orthogonal Bundle	Chlorophyll a-b binding protein	Chlorophyll a/b binding protein domain	CATH (4.3.0)
FA [auth g]	1.10.3460.10	Mainly Alpha	Orthogonal Bundle	Chlorophyll a-b binding protein	Chlorophyll a/b binding protein domain	CATH (4.3.0)
G	1.10.3460.10	Mainly Alpha	Orthogonal Bundle	Chlorophyll a-b binding protein	Chlorophyll a/b binding protein domain	CATH (4.3.0)
MA [auth n]	1.10.3460.10	Mainly Alpha	Orthogonal Bundle	Chlorophyll a-b binding protein	Chlorophyll a/b binding protein domain	CATH (4.3.0)
X [auth Y]	1.10.3460.10	Mainly Alpha	Orthogonal Bundle	Chlorophyll a-b binding protein	Chlorophyll a/b binding protein domain	CATH (4.3.0)
GA [auth h]	1.20.5.880	Mainly Alpha	Up-down Bundle	Single alpha-helices involved in coiled-coils or other helix-helix interfaces	Photosystem II reaction center protein H	CATH (4.3.0)
H	1.20.5.880	Mainly Alpha	Up-down Bundle	Single alpha-helices involved in coiled-coils or other helix-helix interfaces	Photosystem II reaction center protein H	CATH (4.3.0)

Protein Family Annotation Pfam Database Homepage

Chains	Accession	Name	Description	Comments	Source
A, Z [auth a]	PF00124	Photosynthetic reaction centre protein (Photo_RC)	Photosynthetic reaction centre protein	-	Family
IA [auth j], J	PF01788	PsbJ (PsbJ)	PsbJ	-	Family
JA [auth k], K	PF02533	Photosystem II 4 kDa reaction centre component (PsbK)	Photosystem II 4 kDa reaction centre component	-	Family
KA [auth l], L	PF02419	PsbL protein (PsbL)	PsbL protein	-	Family
LA [auth m], M	PF05151	Photosystem II reaction centre M protein (PsbM) (PsbM)	Photosystem II reaction centre M protein (PsbM)	-	Family
NA [auth o], O	PF01716	Manganese-stabilising protein / photosystem II polypeptide (MSP)	Manganese-stabilising protein / photosystem II polypeptide	-	Family
OA [auth p], P	PF01789	PsbP (PsbP)	PsbP	This entry consists of the 23 kDa subunit of oxygen evolving system of photosystem II or PsbP from various plants (where it is encoded by the nuclear genome) and Cyanobacteria (known as CyanoP). The 23 KDa PsbP protein is required for PSII to be ful ...	This entry consists of the 23 kDa subunit of oxygen evolving system of photosystem II or PsbP from various plants (where it is encoded by the nuclear genome) and Cyanobacteria (known as CyanoP). The 23 KDa PsbP protein is required for PSII to be fully operational in vivo, it increases the affinity of the water oxidation site for Cl- and provides the conditions required for high affinity binding of Ca2+ [2]. Structure of CyanoP from Synechocystis sp. revealed that it has an alpha-beta-alpha fold containing 10 beta strands organized into two anti-parallel beta-sheets, packed against alpha-helices. This entry covers the first seven beta-stands (beta1-beta7) and the N-terminal alpha-helix [1].	Domain
OA [auth p], P	PF20928	PsbP, C-terminal (PsbP_C)	PsbP, C-terminal	This entry represents the C-terminal of PsbP/CyanoP and PsbP-like proteins (also known as 23 kDa subunit of oxygen evolving system of photosystem II) from plants and Cyanobacteria. The 23 KDa PsbP protein is required for PSII to be fully operational ...	This entry represents the C-terminal of PsbP/CyanoP and PsbP-like proteins (also known as 23 kDa subunit of oxygen evolving system of photosystem II) from plants and Cyanobacteria. The 23 KDa PsbP protein is required for PSII to be fully operational in vivo, it increases the affinity of the water oxidation site for Cl- and provides the conditions required for high affinity binding of Ca2+ [2]. Structure of CyanoP from Synechocystis sp. revealed that it has an alpha-beta-alpha fold containing 10 beta strands organized into two anti-parallel beta-sheets, packed against two alpha-helices. This entry covers the last three beta-stands (beta8-beta9-beta10) and the C-terminal alpha-helix [1,2].	Domain
PA [auth q], Q	PF05757	Oxygen evolving enhancer protein 3 (PsbQ) (PsbQ)	Oxygen evolving enhancer protein 3 (PsbQ)	-	Family
QA [auth r], R	PF00504	Chlorophyll A-B binding protein (Chloroa_b-bind)	Chlorophyll A-B binding protein	-	Family
RA [auth s], S	PF00504	Chlorophyll A-B binding protein (Chloroa_b-bind)	Chlorophyll A-B binding protein	-	Family
SA [auth t], T	PF01405	Photosystem II reaction centre T protein (PsbT)	Photosystem II reaction centre T protein	-	Family
AA [auth b], B	PF00421	Photosystem II protein (PSII)	Photosystem II protein	-	Family
UA [auth w], V [auth W]	PF07123	Photosystem II reaction centre W protein (PsbW) (PsbW)	Photosystem II reaction centre W protein (PsbW)	-	Family
XA [auth z], Y [auth Z]	PF01737	YCF9 (Ycf9)	YCF9	-	Family
BA [auth c], C	PF00421	Photosystem II protein (PSII)	Photosystem II protein	-	Family
CA [auth d], D	PF00124	Photosynthetic reaction centre protein (Photo_RC)	Photosynthetic reaction centre protein	-	Family
DA [auth e], E	PF00283	Cytochrome b559, alpha (gene psbE) and beta (gene psbF)subunits (Cytochrom_B559)	Cytochrome b559, alpha (gene psbE) and beta (gene psbF)subunits	-	Family
DA [auth e], E	PF00284	Lumenal portion of Cytochrome b559, alpha (gene psbE) subunit (Cytochrom_B559a)	Lumenal portion of Cytochrome b559, alpha (gene psbE) subunit	-	Family
EA [auth f], F	PF00283	Cytochrome b559, alpha (gene psbE) and beta (gene psbF)subunits (Cytochrom_B559)	Cytochrome b559, alpha (gene psbE) and beta (gene psbF)subunits	-	Family
FA [auth g], G, MA [auth n], N, WA [auth y], FA [auth g], G, MA [auth n], N, WA [auth y], X [auth Y]	PF00504	Chlorophyll A-B binding protein (Chloroa_b-bind)	Chlorophyll A-B binding protein	-	Family
GA [auth h], H	PF00737	Photosystem II 10 kDa phosphoprotein (PsbH)	Photosystem II 10 kDa phosphoprotein	-	Family
HA [auth i], I	PF02532	Photosystem II reaction centre I protein (PSII 4.8 kDa protein) (PsbI)	Photosystem II reaction centre I protein (PSII 4.8 kDa protein)	-	Family

Gene Ontology: Gene Product Annotation Gene Ontology Database Homepage

Chains	Polymer	Molecular Function	Biological Process	Cellular Component
A, Z [auth a]	Photosystem II protein D1	oxidoreductase activity, acting on diphenols and related substances as donors, oxygen as acceptor oxidoreductase activity oxidoreductase activity, acting on diphenols and related substances as donors catalytic activity electron transfer activity electron transporter, transferring electrons within the cyclic electron transport pathway of photosynthesis activity oxygen evolving activity chlorophyll binding binding organic cyclic compound binding tetrapyrrole binding cation binding transition metal ion binding iron ion binding oxidoreductase activity, acting on diphenols and related substances as donors, oxygen as acceptor oxidoreductase activity oxidoreductase activity, acting on diphenols and related substances as donors catalytic activity electron transfer activity electron transporter, transferring electrons within the cyclic electron transport pathway of photosynthesis activity oxygen evolving activity chlorophyll binding binding organic cyclic compound binding tetrapyrrole binding cation binding transition metal ion binding iron ion binding ion binding metal ion binding small molecule binding	photosynthesis photosynthesis, light reaction photosynthetic electron transport chain cellular metabolic process electron transport chain photosynthetic electron transport in photosystem II metabolic process cellular process generation of precursor metabolites and energy response to stimulus response to chemical response to stress response to herbicide response to toxic substance	protein-containing complex photosystem intracellular anatomical structure photosystem II membrane membrane protein complex cellular anatomical entity intracellular organelle organelle intracellular non-membrane-bounded organelle photosynthetic membrane thylakoid non-membrane-bounded organelle chloroplast thylakoid membrane protein-containing complex photosystem intracellular anatomical structure photosystem II membrane membrane protein complex cellular anatomical entity intracellular organelle organelle intracellular non-membrane-bounded organelle photosynthetic membrane thylakoid non-membrane-bounded organelle chloroplast thylakoid membrane membrane-bounded organelle plastid membrane plastid organelle outer membrane plastid thylakoid membrane plastid thylakoid organelle envelope bounding membrane of organelle plastid envelope chloroplast intracellular membrane-bounded organelle thylakoid membrane chloroplast thylakoid outer membrane cytoplasm organelle membrane
IA [auth j], J	Photosystem II reaction center protein J	-	photosynthesis cellular metabolic process metabolic process cellular process	protein-containing complex photosystem intracellular anatomical structure photosystem II membrane membrane protein complex cellular anatomical entity intracellular organelle organelle intracellular non-membrane-bounded organelle photosynthetic membrane thylakoid non-membrane-bounded organelle photosystem II reaction center protein-containing complex photosystem intracellular anatomical structure photosystem II membrane membrane protein complex cellular anatomical entity intracellular organelle organelle intracellular non-membrane-bounded organelle photosynthetic membrane thylakoid non-membrane-bounded organelle photosystem II reaction center chloroplast thylakoid membrane membrane-bounded organelle plastid membrane plastid organelle outer membrane plastid thylakoid membrane plastid thylakoid organelle envelope bounding membrane of organelle plastid envelope chloroplast intracellular membrane-bounded organelle thylakoid membrane chloroplast thylakoid outer membrane cytoplasm organelle membrane
JA [auth k], K	Photosystem II reaction center protein K	-	photosynthesis cellular metabolic process metabolic process cellular process	protein-containing complex photosystem intracellular anatomical structure photosystem II membrane membrane protein complex cellular anatomical entity photosystem II reaction center intracellular organelle organelle intracellular non-membrane-bounded organelle photosynthetic membrane thylakoid non-membrane-bounded organelle protein-containing complex photosystem intracellular anatomical structure photosystem II membrane membrane protein complex cellular anatomical entity photosystem II reaction center intracellular organelle organelle intracellular non-membrane-bounded organelle photosynthetic membrane thylakoid non-membrane-bounded organelle chloroplast thylakoid membrane membrane-bounded organelle plastid membrane plastid organelle outer membrane plastid thylakoid membrane plastid thylakoid organelle envelope bounding membrane of organelle plastid envelope chloroplast intracellular membrane-bounded organelle thylakoid membrane chloroplast thylakoid outer membrane cytoplasm organelle membrane
KA [auth l], L	Protein Photosystem II reaction center protein L	-	photosynthesis cellular metabolic process metabolic process cellular process	protein-containing complex photosystem intracellular anatomical structure photosystem II membrane membrane protein complex cellular anatomical entity photosystem II reaction center intracellular organelle organelle intracellular non-membrane-bounded organelle photosynthetic membrane thylakoid non-membrane-bounded organelle protein-containing complex photosystem intracellular anatomical structure photosystem II membrane membrane protein complex cellular anatomical entity photosystem II reaction center intracellular organelle organelle intracellular non-membrane-bounded organelle photosynthetic membrane thylakoid non-membrane-bounded organelle chloroplast thylakoid membrane membrane-bounded organelle plastid membrane plastid organelle outer membrane plastid thylakoid membrane plastid thylakoid organelle envelope bounding membrane of organelle plastid envelope chloroplast intracellular membrane-bounded organelle thylakoid membrane chloroplast thylakoid outer membrane cytoplasm organelle membrane
LA [auth m], M	Photosystem II reaction center protein M	-	photosynthesis photosynthesis, light reaction cellular metabolic process metabolic process cellular process generation of precursor metabolites and energy	protein-containing complex photosystem intracellular anatomical structure photosystem II membrane membrane protein complex cellular anatomical entity intracellular organelle organelle intracellular non-membrane-bounded organelle photosynthetic membrane thylakoid non-membrane-bounded organelle chloroplast thylakoid membrane protein-containing complex photosystem intracellular anatomical structure photosystem II membrane membrane protein complex cellular anatomical entity intracellular organelle organelle intracellular non-membrane-bounded organelle photosynthetic membrane thylakoid non-membrane-bounded organelle chloroplast thylakoid membrane membrane-bounded organelle plastid membrane plastid organelle outer membrane plastid thylakoid membrane plastid thylakoid organelle envelope bounding membrane of organelle plastid envelope chloroplast intracellular membrane-bounded organelle thylakoid membrane chloroplast thylakoid outer membrane cytoplasm organelle membrane
NA [auth o], O	Oxygen-evolving enhancer protein 1, chloroplastic	oxidoreductase activity oxygen evolving activity catalytic activity	photosynthesis photosynthesis, light reaction cellular metabolic process metabolic process cellular process generation of precursor metabolites and energy protein-containing complex organization photosystem II assembly cellular component organization cellular component biogenesis cellular component assembly protein-containing complex assembly cellular component organization or biogenesis regulation of biological process photosynthesis photosynthesis, light reaction cellular metabolic process metabolic process cellular process generation of precursor metabolites and energy protein-containing complex organization photosystem II assembly cellular component organization cellular component biogenesis cellular component assembly protein-containing complex assembly cellular component organization or biogenesis regulation of biological process regulation of cellular process regulation of photosynthesis photosystem II stabilization regulation of photosynthesis, light reaction biological regulation regulation of cellular metabolic process regulation of generation of precursor metabolites and energy regulation of metabolic process	chloroplast thylakoid membrane membrane-bounded organelle plastid membrane protein-containing complex photosystem intracellular anatomical structure plastid photosystem II membrane protein complex organelle outer membrane plastid thylakoid membrane plastid thylakoid intracellular organelle organelle envelope chloroplast thylakoid membrane membrane-bounded organelle plastid membrane protein-containing complex photosystem intracellular anatomical structure plastid photosystem II membrane protein complex organelle outer membrane plastid thylakoid membrane plastid thylakoid intracellular organelle organelle envelope bounding membrane of organelle thylakoid plastid envelope non-membrane-bounded organelle chloroplast chloroplast photosystem II membrane cellular anatomical entity intracellular membrane-bounded organelle thylakoid membrane chloroplast thylakoid membrane protein complex organelle chloroplast thylakoid intracellular non-membrane-bounded organelle outer membrane photosynthetic membrane cytoplasm organelle membrane catalytic complex photosystem II oxygen evolving complex oxidoreductase complex
OA [auth p], P	Oxygen-evolving enhancer protein 2, chloroplastic	cation binding ion binding binding calcium ion binding metal ion binding small molecule binding	photosynthesis cellular metabolic process metabolic process cellular process	chloroplast thylakoid membrane membrane-bounded organelle plastid membrane intracellular anatomical structure plastid organelle outer membrane plastid thylakoid membrane plastid thylakoid intracellular organelle organelle envelope bounding membrane of organelle thylakoid plastid envelope chloroplast chloroplast thylakoid membrane membrane-bounded organelle plastid membrane intracellular anatomical structure plastid organelle outer membrane plastid thylakoid membrane plastid thylakoid intracellular organelle organelle envelope bounding membrane of organelle thylakoid plastid envelope chloroplast non-membrane-bounded organelle membrane cellular anatomical entity intracellular membrane-bounded organelle thylakoid membrane organelle chloroplast thylakoid intracellular non-membrane-bounded organelle outer membrane cytoplasm photosynthetic membrane organelle membrane extrinsic component of membrane protein-containing complex photosystem catalytic complex photosystem II membrane protein complex photosystem II oxygen evolving complex oxidoreductase complex
PA [auth q], Q	Oxygen-evolving enhancer protein 3, chloroplastic	cation binding ion binding binding calcium ion binding metal ion binding small molecule binding	photosynthesis cellular metabolic process metabolic process cellular process	chloroplast thylakoid membrane membrane-bounded organelle plastid membrane intracellular anatomical structure plastid organelle outer membrane plastid thylakoid membrane plastid thylakoid intracellular organelle organelle envelope bounding membrane of organelle thylakoid plastid envelope chloroplast chloroplast thylakoid membrane membrane-bounded organelle plastid membrane intracellular anatomical structure plastid organelle outer membrane plastid thylakoid membrane plastid thylakoid intracellular organelle organelle envelope bounding membrane of organelle thylakoid plastid envelope chloroplast non-membrane-bounded organelle membrane cellular anatomical entity intracellular membrane-bounded organelle thylakoid membrane organelle chloroplast thylakoid intracellular non-membrane-bounded organelle outer membrane cytoplasm photosynthetic membrane organelle membrane extrinsic component of membrane protein-containing complex photosystem catalytic complex photosystem II membrane protein complex photosystem II oxygen evolving complex oxidoreductase complex
QA [auth r], R	Chlorophyll A-B Binding protein 29 kD (CP29)	chlorophyll binding binding organic cyclic compound binding tetrapyrrole binding phosphoprotein binding protein binding	photosynthesis photosynthesis, light reaction cellular metabolic process photosynthesis, light harvesting metabolic process cellular process generation of precursor metabolites and energy	protein-containing complex photosystem intracellular anatomical structure photosystem II membrane membrane protein complex cellular anatomical entity intracellular organelle organelle intracellular non-membrane-bounded organelle photosynthetic membrane thylakoid non-membrane-bounded organelle chloroplast thylakoid membrane protein-containing complex photosystem intracellular anatomical structure photosystem II membrane membrane protein complex cellular anatomical entity intracellular organelle organelle intracellular non-membrane-bounded organelle photosynthetic membrane thylakoid non-membrane-bounded organelle chloroplast thylakoid membrane membrane-bounded organelle plastid membrane plastid organelle outer membrane plastid thylakoid membrane plastid thylakoid organelle envelope bounding membrane of organelle plastid envelope chloroplast intracellular membrane-bounded organelle thylakoid membrane chloroplast thylakoid outer membrane cytoplasm organelle membrane photosystem I
RA [auth s], S	Chlorophyll A-B Binding protein 26 kD (CP26)	-	-	-
SA [auth t], T	Photosystem II Reaction Center protein Tc	-	photosynthesis cellular metabolic process metabolic process cellular process	protein-containing complex photosystem intracellular anatomical structure photosystem II membrane membrane protein complex cellular anatomical entity photosystem II reaction center intracellular organelle organelle intracellular non-membrane-bounded organelle photosynthetic membrane thylakoid non-membrane-bounded organelle protein-containing complex photosystem intracellular anatomical structure photosystem II membrane membrane protein complex cellular anatomical entity photosystem II reaction center intracellular organelle organelle intracellular non-membrane-bounded organelle photosynthetic membrane thylakoid non-membrane-bounded organelle chloroplast thylakoid membrane membrane-bounded organelle plastid membrane plastid organelle outer membrane plastid thylakoid membrane plastid thylakoid organelle envelope bounding membrane of organelle plastid envelope chloroplast intracellular membrane-bounded organelle thylakoid membrane chloroplast thylakoid outer membrane cytoplasm organelle membrane
AA [auth b], B	Photosystem II CP47 reaction center protein	electron transfer activity electron transporter, transferring electrons within the cyclic electron transport pathway of photosynthesis activity chlorophyll binding binding organic cyclic compound binding tetrapyrrole binding	photosynthesis photosynthesis, light reaction photosynthetic electron transport chain cellular metabolic process electron transport chain photosynthetic electron transport in photosystem II metabolic process cellular process generation of precursor metabolites and energy	protein-containing complex photosystem intracellular anatomical structure photosystem II membrane membrane protein complex cellular anatomical entity intracellular organelle organelle intracellular non-membrane-bounded organelle photosynthetic membrane thylakoid non-membrane-bounded organelle chloroplast thylakoid membrane protein-containing complex photosystem intracellular anatomical structure photosystem II membrane membrane protein complex cellular anatomical entity intracellular organelle organelle intracellular non-membrane-bounded organelle photosynthetic membrane thylakoid non-membrane-bounded organelle chloroplast thylakoid membrane membrane-bounded organelle plastid membrane plastid organelle outer membrane plastid thylakoid membrane plastid thylakoid organelle envelope bounding membrane of organelle plastid envelope chloroplast intracellular membrane-bounded organelle thylakoid membrane chloroplast thylakoid outer membrane cytoplasm organelle membrane
TA [auth u], U	Photosystem II Reaction Center Tn protein	-	-	-
UA [auth w], V [auth W]	Photosystem II reaction center W protein, chloroplastic	-	photosynthesis cellular metabolic process metabolic process cellular process	protein-containing complex photosystem intracellular anatomical structure photosystem II membrane membrane protein complex cellular anatomical entity intracellular organelle organelle intracellular non-membrane-bounded organelle photosynthetic membrane thylakoid non-membrane-bounded organelle chloroplast thylakoid membrane protein-containing complex photosystem intracellular anatomical structure photosystem II membrane membrane protein complex cellular anatomical entity intracellular organelle organelle intracellular non-membrane-bounded organelle photosynthetic membrane thylakoid non-membrane-bounded organelle chloroplast thylakoid membrane membrane-bounded organelle plastid membrane plastid organelle outer membrane plastid thylakoid membrane plastid thylakoid organelle envelope bounding membrane of organelle plastid envelope chloroplast intracellular membrane-bounded organelle thylakoid membrane chloroplast thylakoid outer membrane cytoplasm organelle membrane
VA [auth x], W [auth X]	Photosystem II Reaction Center X protein	-	-	-
XA [auth z], Y [auth Z]	Photosystem II reaction center protein Z	-	photosynthesis cellular metabolic process metabolic process cellular process regulation of biological process regulation of cellular process regulation of photosynthesis photosynthesis, light reaction photosystem II stabilization regulation of photosynthesis, light reaction biological regulation regulation of cellular metabolic process regulation of generation of precursor metabolites and energy generation of precursor metabolites and energy photosynthesis cellular metabolic process metabolic process cellular process regulation of biological process regulation of cellular process regulation of photosynthesis photosynthesis, light reaction photosystem II stabilization regulation of photosynthesis, light reaction biological regulation regulation of cellular metabolic process regulation of generation of precursor metabolites and energy generation of precursor metabolites and energy regulation of metabolic process	protein-containing complex photosystem intracellular anatomical structure photosystem II membrane membrane protein complex cellular anatomical entity photosystem II reaction center intracellular organelle organelle intracellular non-membrane-bounded organelle photosynthetic membrane thylakoid non-membrane-bounded organelle protein-containing complex photosystem intracellular anatomical structure photosystem II membrane membrane protein complex cellular anatomical entity photosystem II reaction center intracellular organelle organelle intracellular non-membrane-bounded organelle photosynthetic membrane thylakoid non-membrane-bounded organelle chloroplast thylakoid membrane membrane-bounded organelle plastid membrane plastid organelle outer membrane plastid thylakoid membrane plastid thylakoid organelle envelope bounding membrane of organelle plastid envelope chloroplast intracellular membrane-bounded organelle thylakoid membrane chloroplast thylakoid outer membrane cytoplasm organelle membrane
BA [auth c], C	Photosystem II CP43 reaction center protein	electron transfer activity electron transporter, transferring electrons within the cyclic electron transport pathway of photosynthesis activity chlorophyll binding binding organic cyclic compound binding tetrapyrrole binding cation binding ion binding metal ion binding small molecule binding	photosynthesis photosynthesis, light reaction photosynthetic electron transport chain cellular metabolic process electron transport chain photosynthetic electron transport in photosystem II metabolic process cellular process generation of precursor metabolites and energy	protein-containing complex photosystem intracellular anatomical structure photosystem II membrane membrane protein complex cellular anatomical entity intracellular organelle organelle intracellular non-membrane-bounded organelle photosynthetic membrane thylakoid non-membrane-bounded organelle chloroplast thylakoid membrane protein-containing complex photosystem intracellular anatomical structure photosystem II membrane membrane protein complex cellular anatomical entity intracellular organelle organelle intracellular non-membrane-bounded organelle photosynthetic membrane thylakoid non-membrane-bounded organelle chloroplast thylakoid membrane membrane-bounded organelle plastid membrane plastid organelle outer membrane plastid thylakoid membrane plastid thylakoid organelle envelope bounding membrane of organelle plastid envelope chloroplast intracellular membrane-bounded organelle thylakoid membrane chloroplast thylakoid outer membrane cytoplasm organelle membrane
CA [auth d], D	Photosystem II D2 protein	electron transfer activity electron transporter, transferring electrons within the cyclic electron transport pathway of photosynthesis activity oxidoreductase activity oxygen evolving activity catalytic activity chlorophyll binding binding organic cyclic compound binding tetrapyrrole binding cation binding transition metal ion binding iron ion binding ion binding metal ion binding electron transfer activity electron transporter, transferring electrons within the cyclic electron transport pathway of photosynthesis activity oxidoreductase activity oxygen evolving activity catalytic activity chlorophyll binding binding organic cyclic compound binding tetrapyrrole binding cation binding transition metal ion binding iron ion binding ion binding metal ion binding small molecule binding	photosynthesis photosynthesis, light reaction photosynthetic electron transport chain cellular metabolic process electron transport chain photosynthetic electron transport in photosystem II metabolic process cellular process generation of precursor metabolites and energy	protein-containing complex photosystem intracellular anatomical structure photosystem II membrane membrane protein complex cellular anatomical entity intracellular organelle organelle intracellular non-membrane-bounded organelle photosynthetic membrane thylakoid non-membrane-bounded organelle chloroplast thylakoid membrane protein-containing complex photosystem intracellular anatomical structure photosystem II membrane membrane protein complex cellular anatomical entity intracellular organelle organelle intracellular non-membrane-bounded organelle photosynthetic membrane thylakoid non-membrane-bounded organelle chloroplast thylakoid membrane membrane-bounded organelle plastid membrane plastid organelle outer membrane plastid thylakoid membrane plastid thylakoid organelle envelope bounding membrane of organelle plastid envelope chloroplast intracellular membrane-bounded organelle thylakoid membrane chloroplast thylakoid outer membrane cytoplasm organelle membrane
DA [auth e], E	Cytochrome b559 subunit alpha	binding organic cyclic compound binding tetrapyrrole binding heme binding electron transfer activity cation binding transition metal ion binding iron ion binding ion binding metal ion binding small molecule binding	photosynthesis photosynthesis, light reaction photosynthetic electron transport chain cellular metabolic process electron transport chain metabolic process cellular process generation of precursor metabolites and energy	protein-containing complex photosystem intracellular anatomical structure photosystem II membrane membrane protein complex cellular anatomical entity photosystem II reaction center intracellular organelle organelle intracellular non-membrane-bounded organelle photosynthetic membrane thylakoid non-membrane-bounded organelle protein-containing complex photosystem intracellular anatomical structure photosystem II membrane membrane protein complex cellular anatomical entity photosystem II reaction center intracellular organelle organelle intracellular non-membrane-bounded organelle photosynthetic membrane thylakoid non-membrane-bounded organelle chloroplast thylakoid membrane membrane-bounded organelle plastid membrane plastid organelle outer membrane plastid thylakoid membrane plastid thylakoid organelle envelope bounding membrane of organelle plastid envelope chloroplast intracellular membrane-bounded organelle thylakoid membrane chloroplast thylakoid outer membrane cytoplasm organelle membrane
EA [auth f], F	Cytochrome b559 subunit beta	binding organic cyclic compound binding tetrapyrrole binding heme binding electron transfer activity cation binding transition metal ion binding iron ion binding ion binding metal ion binding small molecule binding	photosynthesis photosynthesis, light reaction photosynthetic electron transport chain cellular metabolic process electron transport chain metabolic process cellular process generation of precursor metabolites and energy	protein-containing complex photosystem intracellular anatomical structure photosystem II membrane membrane protein complex cellular anatomical entity photosystem II reaction center intracellular organelle organelle intracellular non-membrane-bounded organelle photosynthetic membrane thylakoid non-membrane-bounded organelle protein-containing complex photosystem intracellular anatomical structure photosystem II membrane membrane protein complex cellular anatomical entity photosystem II reaction center intracellular organelle organelle intracellular non-membrane-bounded organelle photosynthetic membrane thylakoid non-membrane-bounded organelle chloroplast thylakoid membrane membrane-bounded organelle plastid membrane plastid organelle outer membrane plastid thylakoid membrane plastid thylakoid organelle envelope bounding membrane of organelle plastid envelope chloroplast intracellular membrane-bounded organelle thylakoid membrane chloroplast thylakoid outer membrane cytoplasm organelle membrane
FA [auth g], G, MA [auth n], N, WA [auth y], FA [auth g], G, MA [auth n], N, WA [auth y], X [auth Y]	Chlorophyll a-b binding protein, chloroplastic	chlorophyll binding binding organic cyclic compound binding tetrapyrrole binding cation binding ion binding metal ion binding small molecule binding	photosynthesis photosynthesis, light reaction cellular metabolic process photosynthesis, light harvesting metabolic process cellular process generation of precursor metabolites and energy	protein-containing complex photosystem intracellular anatomical structure photosystem II membrane membrane protein complex cellular anatomical entity intracellular organelle organelle intracellular non-membrane-bounded organelle photosynthetic membrane thylakoid non-membrane-bounded organelle chloroplast thylakoid membrane protein-containing complex photosystem intracellular anatomical structure photosystem II membrane membrane protein complex cellular anatomical entity intracellular organelle organelle intracellular non-membrane-bounded organelle photosynthetic membrane thylakoid non-membrane-bounded organelle chloroplast thylakoid membrane membrane-bounded organelle plastid membrane plastid organelle outer membrane plastid thylakoid membrane plastid thylakoid organelle envelope bounding membrane of organelle plastid envelope chloroplast intracellular membrane-bounded organelle thylakoid membrane chloroplast thylakoid outer membrane cytoplasm organelle membrane photosystem I
GA [auth h], H	Photosystem II reaction center protein H	ion binding binding anion binding phosphate ion binding small molecule binding	regulation of protein stability biological regulation regulation of biological quality protein stabilization photosynthesis cellular metabolic process metabolic process cellular process	protein-containing complex photosystem intracellular anatomical structure photosystem II membrane membrane protein complex cellular anatomical entity intracellular organelle organelle intracellular non-membrane-bounded organelle photosynthetic membrane thylakoid non-membrane-bounded organelle chloroplast thylakoid membrane protein-containing complex photosystem intracellular anatomical structure photosystem II membrane membrane protein complex cellular anatomical entity intracellular organelle organelle intracellular non-membrane-bounded organelle photosynthetic membrane thylakoid non-membrane-bounded organelle chloroplast thylakoid membrane membrane-bounded organelle plastid membrane plastid organelle outer membrane plastid thylakoid membrane plastid thylakoid organelle envelope bounding membrane of organelle plastid envelope chloroplast intracellular membrane-bounded organelle thylakoid membrane chloroplast thylakoid outer membrane cytoplasm organelle membrane
HA [auth i], I	Protein Photosystem II reaction center protein I	-	photosynthesis cellular metabolic process metabolic process cellular process	protein-containing complex photosystem intracellular anatomical structure photosystem II membrane membrane protein complex cellular anatomical entity photosystem II reaction center intracellular organelle organelle intracellular non-membrane-bounded organelle photosynthetic membrane thylakoid non-membrane-bounded organelle protein-containing complex photosystem intracellular anatomical structure photosystem II membrane membrane protein complex cellular anatomical entity photosystem II reaction center intracellular organelle organelle intracellular non-membrane-bounded organelle photosynthetic membrane thylakoid non-membrane-bounded organelle chloroplast thylakoid membrane membrane-bounded organelle plastid membrane plastid organelle outer membrane plastid thylakoid membrane plastid thylakoid organelle envelope bounding membrane of organelle plastid envelope chloroplast intracellular membrane-bounded organelle thylakoid membrane chloroplast thylakoid outer membrane cytoplasm organelle membrane

InterPro: Protein Family Classification InterPro Database Homepage

Chains	Accession	Name	Type
A, Z [auth a]	IPR005867	Photosystem II protein D1	Family
A, Z [auth a]	IPR036854	Photosystem II protein D1/D2 superfamily	Homologous Superfamily
A, Z [auth a]	IPR000484	Photosynthetic reaction centre, L/M	Family
IA [auth j], J	IPR002682	Photosystem II PsbJ	Family
IA [auth j], J	IPR037267	Photosystem II PsbJ superfamily	Homologous Superfamily
JA [auth k], K	IPR037270	Photosystem II PsbK superfamily	Homologous Superfamily
JA [auth k], K	IPR003687	Photosystem II PsbK	Family
KA [auth l], L	IPR003372	Photosystem II PsbL	Family
KA [auth l], L	IPR037266	Photosystem II PsbL superfamily	Homologous Superfamily
LA [auth m], M	IPR007826	Photosystem II PsbM	Family
LA [auth m], M	IPR037269	Photosystem II PsbM superfamily	Homologous Superfamily
NA [auth o], O	IPR011250	Outer membrane protein/outer membrane enzyme PagP, beta-barrel	Homologous Superfamily
NA [auth o], O	IPR002628	Photosystem II extrinsic protein O	Family
OA [auth p], P	IPR002683	PsbP, C-terminal	Domain
OA [auth p], P	IPR016123	Mog1/PsbP, alpha/beta/alpha sandwich	Homologous Superfamily
PA [auth q], Q	IPR008797	Oxygen-evolving enhancer protein 3	Family
PA [auth q], Q	IPR023222	PsbQ-like domain superfamily	Homologous Superfamily
QA [auth r], R	IPR001344	Chlorophyll A-B binding protein, plant and chromista	Family
QA [auth r], R	IPR022796	Chlorophyll A-B binding protein	Family
SA [auth t], T	IPR001743	Photosystem II PsbT	Family
SA [auth t], T	IPR037268	Photosystem II PsbT superfamily	Homologous Superfamily
AA [auth b], B	IPR036001	Photosystem antenna protein-like superfamily	Homologous Superfamily
AA [auth b], B	IPR000932	Photosystem antenna protein-like	Family
AA [auth b], B	IPR017486	Photosystem II CP47 reaction centre protein	Family
UA [auth w], V [auth W]	IPR009806	Photosystem II PsbW, class 2	Family
XA [auth z], Y [auth Z]	IPR036512	Photosystem II PsbZ superfamily	Homologous Superfamily
XA [auth z], Y [auth Z]	IPR002644	Photosystem II PsbZ, reaction centre	Family
BA [auth c], C	IPR036001	Photosystem antenna protein-like superfamily	Homologous Superfamily
BA [auth c], C	IPR000932	Photosystem antenna protein-like	Family
BA [auth c], C	IPR005869	Photosystem II CP43 reaction centre protein	Family
BA [auth c], C	IPR044900	Photosystem II CP43 reaction centre protein superfamily	Homologous Superfamily
CA [auth d], D	IPR036854	Photosystem II protein D1/D2 superfamily	Homologous Superfamily
CA [auth d], D	IPR000484	Photosynthetic reaction centre, L/M	Family
CA [auth d], D	IPR005868	Photosystem II D2 protein	Family
DA [auth e], E	IPR013081	Photosystem II cytochrome b559, N-terminal	Domain
DA [auth e], E	IPR006217	Photosystem II cytochrome b559, alpha subunit	Family
DA [auth e], E	IPR013082	Photosystem II cytochrome b559, alpha subunit, lumenal region	Domain
DA [auth e], E	IPR037025	Photosystem II cytochrome b559, alpha subunit superfamily	Homologous Superfamily
DA [auth e], E	IPR006216	Photosystem II cytochrome b559, conserved site	Conserved Site
EA [auth f], F	IPR006241	Photosystem II cytochrome b559, beta subunit	Family
EA [auth f], F	IPR013081	Photosystem II cytochrome b559, N-terminal	Domain
EA [auth f], F	IPR006216	Photosystem II cytochrome b559, conserved site	Conserved Site
FA [auth g], G, MA [auth n], N, WA [auth y], FA [auth g], G, MA [auth n], N, WA [auth y], X [auth Y]	IPR001344	Chlorophyll A-B binding protein, plant and chromista	Family
FA [auth g], G, MA [auth n], N, WA [auth y], FA [auth g], G, MA [auth n], N, WA [auth y], X [auth Y]	IPR022796	Chlorophyll A-B binding protein	Family
GA [auth h], H	IPR036863	Photosystem II reaction centre protein H superfamily	Homologous Superfamily
GA [auth h], H	IPR001056	Photosystem II reaction centre protein H	Family
HA [auth i], I	IPR037271	Photosystem II PsbI superfamily	Homologous Superfamily
HA [auth i], I	IPR003686	Photosystem II PsbI	Family

Membrane Protein Annotation: OPM OPM Database Homepage

Chains	External Link	Type	Class	Superfamily	Family
A, AA [auth b], B, BA [auth c], C A, AA [auth b], B, BA [auth c], C, CA [auth d], D, DA [auth e], E, EA [auth f], F, FA [auth g], G, GA [auth h], H, HA [auth i], I, IA [auth j], J, JA [auth k], K, KA [auth l], L, LA [auth m], M, MA [auth n], N, NA [auth o], O, OA [auth p], P, PA [auth q], Q, SA [auth t], T, UA [auth w], V [auth W], WA [auth y], X [auth Y], XA [auth z], Y [auth Z], Z [auth a]	OPM	Transmembrane	Alpha-helical polytopic	Photosystems	Photosystem II

Membrane Protein Annotation: PDBTM PDBTM Database Homepage

Chains	External Link	Comment
A, AA [auth b], B, BA [auth c], C A, AA [auth b], B, BA [auth c], C, CA [auth d], D, DA [auth e], E, EA [auth f], F, FA [auth g], G, GA [auth h], H, HA [auth i], I, IA [auth j], J, JA [auth k], K, KA [auth l], L, LA [auth m], M, MA [auth n], N, NA [auth o], O, OA [auth p], P, PA [auth q], Q, SA [auth t], T, UA [auth w], V [auth W], WA [auth y], X [auth Y], XA [auth z], Y [auth Z], Z [auth a]	PDBTM	Annotated as membrane protein by PDBTM