5KAI

NH3-bound RT XFEL structure of Photosystem II 500 ms after the 2nd illumination (2F) at 2.8 A resolution

External Resource: Annotation

Domain Annotation: SCOP/SCOPe Classification
Domain Annotation: SCOP2 Classification
Domain Annotation: ECOD Classification
Domain Annotation: CATH
Protein Family Annotation
Gene Ontology: Gene Product Annotation
InterPro: Protein Family Classification
Membrane Protein Annotation: PDBTM
Membrane Protein Annotation: MemProtMD
Membrane Protein Annotation: mpstruc
Protein Modification Annotation

Domain Annotation: SCOP/SCOPe Classification SCOP-e Database Homepage

Chains	Domain Info	Class	Fold	Superfamily	Family	Domain	Species	Provenance Source (Version)
A	d5kaia_	Membrane and cell surface proteins and peptides	Bacterial photosystem II reaction centre, L and M subunits	Bacterial photosystem II reaction centre, L and M subunits	Bacterial photosystem II reaction centre, L and M subunits	automated matches	(Thermosynechococcus vestitus BP-1 ) [TaxId: 197221 ],	SCOPe (2.08)
J [auth K]	d5kaik_	Membrane and cell surface proteins and peptides	Single transmembrane helix	Photosystem II reaction center protein K, PsbK	automated matches	automated matches	(Thermosynechococcus vestitus BP-1 ) [TaxId: 197221 ],	SCOPe (2.08)
K [auth L]	d5kail_	Membrane and cell surface proteins and peptides	Single transmembrane helix	Photosystem II reaction center protein L, PsbL	PsbL-like	Photosystem II reaction center protein L, PsbL	(Thermosynechococcus vestitus BP-1 ) [TaxId: 197221 ],	SCOPe (2.08)
L [auth M]	d5kaim1	Membrane and cell surface proteins and peptides	Single transmembrane helix	Photosystem II reaction center protein M, PsbM	PsbM-like	Photosystem II reaction center protein M, PsbM	(Thermosynechococcus vestitus BP-1 ) [TaxId: 197221 ],	SCOPe (2.08)
L [auth M]	d5kaim2	Artifacts	Tags	Tags	Tags	N-terminal Tags	(Thermosynechococcus vestitus BP-1 ) [TaxId: 197221 ],	SCOPe (2.08)
GA [auth o]	d5kaio_	Membrane and cell surface proteins and peptides	Transmembrane beta-barrels	OMPA-like	PsbO-like	automated matches	(Thermosynechococcus vestitus BP-1 ) [TaxId: 197221 ],	SCOPe (2.08)
N [auth T]	d5kait1	Membrane and cell surface proteins and peptides	Single transmembrane helix	Photosystem II reaction center protein T, PsbT	PsbT-like	Photosystem II reaction center protein T, PsbT	(Thermosynechococcus vestitus BP-1 ) [TaxId: 197221 ],	SCOPe (2.08)
N [auth T]	d5kait2	Artifacts	Tags	Tags	Tags	N-terminal Tags	(Thermosynechococcus vestitus BP-1 ) [TaxId: 197221 ],	SCOPe (2.08)
IA [auth u]	d5kaiu_	All alpha proteins	SAM domain-like	PsbU/PolX domain-like	PsbU-like	automated matches	(Thermosynechococcus vestitus BP-1 ) [TaxId: 197221 ],	SCOPe (2.08)
JA [auth v]	d5kaiv_	All alpha proteins	Cytochrome c	Cytochrome c	automated matches	automated matches	(Thermosynechococcus vestitus BP-1 ) [TaxId: 197221 ],	SCOPe (2.08)
R [auth X]	d5kaix_	Membrane and cell surface proteins and peptides	Single transmembrane helix	Photosystem II reaction center protein X, PsbX	PsbX-like	automated matches	(Thermosynechococcus vestitus BP-1 ) [TaxId: 197221 ],	SCOPe (2.08)
S [auth Z]	d5kaiz_	Membrane and cell surface proteins and peptides	Transmembrane helix hairpin	PsbZ-like	PsbZ-like	Photosystem II reaction center protein Z, PsbZ	(Thermosynechococcus vestitus BP-1 ) [TaxId: 197221 ],	SCOPe (2.08)
B	d5kaib_	Membrane and cell surface proteins and peptides	Photosystem II antenna protein-like	Photosystem II antenna protein-like	Photosystem II antenna protein-like	automated matches	(Thermosynechococcus vestitus BP-1 ) [TaxId: 197221 ],	SCOPe (2.08)
C	d5kaic_	Membrane and cell surface proteins and peptides	Photosystem II antenna protein-like	Photosystem II antenna protein-like	Photosystem II antenna protein-like	automated matches	(Thermosynechococcus vestitus BP-1 ) [TaxId: 197221 ],	SCOPe (2.08)
D	d5kaid_	Membrane and cell surface proteins and peptides	Bacterial photosystem II reaction centre, L and M subunits	Bacterial photosystem II reaction centre, L and M subunits	Bacterial photosystem II reaction centre, L and M subunits	automated matches	(Thermosynechococcus vestitus BP-1 ) [TaxId: 197221 ],	SCOPe (2.08)
Y [auth e]	d5kaie_	Membrane and cell surface proteins and peptides	Single transmembrane helix	Cytochrome b559 subunits	Cytochrome b559 subunits	automated matches	(Thermosynechococcus vestitus BP-1 ) [TaxId: 197221 ],	SCOPe (2.08)
F	d5kaif_	Membrane and cell surface proteins and peptides	Single transmembrane helix	Cytochrome b559 subunits	Cytochrome b559 subunits	automated matches	(Thermosynechococcus vestitus BP-1 ) [TaxId: 197221 ],	SCOPe (2.08)
AA [auth h]	d5kaih_	Membrane and cell surface proteins and peptides	Single transmembrane helix	Photosystem II 10 kDa phosphoprotein PsbH	PsbH-like	Photosystem II reaction center protein H, PsbH	(Thermosynechococcus vestitus BP-1 ) [TaxId: 197221 ],	SCOPe (2.08)
BA [auth i]	d5kaii1	Membrane and cell surface proteins and peptides	Single transmembrane helix	Photosystem II reaction center protein I, PsbI	PsbI-like	Photosystem II reaction center protein I, PsbI	(Thermosynechococcus vestitus BP-1 ) [TaxId: 197221 ],	SCOPe (2.08)
BA [auth i]	d5kaii2	Artifacts	Tags	Tags	Tags	N-terminal Tags	(Thermosynechococcus vestitus BP-1 ) [TaxId: 197221 ],	SCOPe (2.08)
I [auth J]	d5kaij_	Membrane and cell surface proteins and peptides	Single transmembrane helix	Photosystem II reaction center protein J, PsbJ	PsbJ-like	automated matches	(Thermosynechococcus vestitus BP-1 ) [TaxId: 197221 ],	SCOPe (2.08)

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	8032741	3000736	SCOP2B (2022-06-29)
U [auth a]	SCOP2B Superfamily	Bacterial photosystem II reaction centre L and M subunits	8032741	3000736	SCOP2B (2022-06-29)
DA [auth k]	SCOP2B Superfamily	Photosystem II reaction center protein K PsbK	8032757	3001585	SCOP2B (2022-06-29)
J [auth K]	SCOP2B Superfamily	Photosystem II reaction center protein K PsbK	8032757	3001585	SCOP2B (2022-06-29)
EA [auth l]	SCOP2B Superfamily	Photosystem II reaction center protein L PsbL	8032759	3001523	SCOP2B (2022-06-29)
K [auth L]	SCOP2B Superfamily	Photosystem II reaction center protein L PsbL	8032759	3001523	SCOP2B (2022-06-29)
FA [auth m]	SCOP2B Superfamily	Photosystem II reaction center protein M PsbM	8032762	3001573	SCOP2B (2022-06-29)
L [auth M]	SCOP2B Superfamily	Photosystem II reaction center protein M PsbM	8032762	3001573	SCOP2B (2022-06-29)
GA [auth o]	SCOP2B Superfamily	OMPA barrel-like	8032765	3000208	SCOP2B (2022-06-29)
M [auth O]	SCOP2B Superfamily	OMPA barrel-like	8032765	3000208	SCOP2B (2022-06-29)
N [auth T]	SCOP2B Superfamily	Photosystem II reaction center protein T PsbT	8032769	3001561	SCOP2B (2022-06-29)
HA [auth t]	SCOP2B Superfamily	Photosystem II reaction center protein T PsbT	8032769	3001561	SCOP2B (2022-06-29)
IA [auth u]	SCOP2B Superfamily	PsbU/PolX domain-like	8032768	3000893	SCOP2B (2022-06-29)
O [auth U]	SCOP2B Superfamily	PsbU/PolX domain-like	8032768	3000893	SCOP2B (2022-06-29)
P [auth V]	SCOP2B Superfamily	Cytochrome c	8036565	3000815	SCOP2B (2022-06-29)
JA [auth v]	SCOP2B Superfamily	Cytochrome c	8036565	3000815	SCOP2B (2022-06-29)
KA [auth y]	SCOP2B Superfamily	Photosystem II reaction center protein Ycf12	8093136	3002680	SCOP2B (2022-06-29)
Q [auth Y]	SCOP2B Superfamily	Photosystem II reaction center protein Ycf12	8093136	3002680	SCOP2B (2022-06-29)
MA [auth z]	SCOP2B Superfamily	PsbZ-like	8032770	3001624	SCOP2B (2022-06-29)
S [auth Z]	SCOP2B Superfamily	PsbZ-like	8032770	3001624	SCOP2B (2022-06-29)
V [auth b]	SCOP2B Superfamily	Photosystem II antenna protein-like	8032743	3001674	SCOP2B (2022-06-29)
B	SCOP2B Superfamily	Photosystem II antenna protein-like	8032743	3001674	SCOP2B (2022-06-29)
C	SCOP2B Superfamily	Photosystem II antenna protein-like	8032746	3001674	SCOP2B (2022-06-29)
W [auth c]	SCOP2B Superfamily	Photosystem II antenna protein-like	8032746	3001674	SCOP2B (2022-06-29)
D	SCOP2B Superfamily	Bacterial photosystem II reaction centre L and M subunits	8032750	3000736	SCOP2B (2022-06-29)
X [auth d]	SCOP2B Superfamily	Bacterial photosystem II reaction centre L and M subunits	8032750	3000736	SCOP2B (2022-06-29)
E	SCOP2B Superfamily	Cytochrome b559 subunits	8032749	3001602	SCOP2B (2022-06-29)
Y [auth e]	SCOP2B Superfamily	Cytochrome b559 subunits	8032749	3001602	SCOP2B (2022-06-29)
Z [auth f]	SCOP2B Superfamily	Cytochrome b559 subunits	8032752	3001602	SCOP2B (2022-06-29)
F	SCOP2B Superfamily	Cytochrome b559 subunits	8032752	3001602	SCOP2B (2022-06-29)
AA [auth h]	SCOP2B Superfamily	Photosystem II 10 kDa phosphoprotein PsbH	8032753	3001547	SCOP2B (2022-06-29)
G [auth H]	SCOP2B Superfamily	Photosystem II 10 kDa phosphoprotein PsbH	8032753	3001547	SCOP2B (2022-06-29)
BA [auth i]	SCOP2B Superfamily	Photosystem II reaction center protein I PsbI	8032754	3001590	SCOP2B (2022-06-29)
H [auth I]	SCOP2B Superfamily	Photosystem II reaction center protein I PsbI	8032754	3001590	SCOP2B (2022-06-29)
CA [auth j]	SCOP2B Superfamily	Photosystem II reaction center protein J PsbJ	8032755	3001534	SCOP2B (2022-06-29)
I [auth J]	SCOP2B Superfamily	Photosystem II reaction center protein J PsbJ	8032755	3001534	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	e5kaiA1	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)
U [auth a]	Photo_RC	e5kaia1	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 k]	PsbK	e5kaik1	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)
J [auth K]	PsbK	e5kaiK1	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)
EA [auth l]	PsbL	e5kail1	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)
K [auth L]	PsbL	e5kaiL1	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)
FA [auth m]	PsbM	e5kaim1	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)
L [auth M]	PsbM	e5kaiM1	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)
GA [auth o]	MSP	e5kaio1	A: beta barrels	X: Outer membrane meander beta-barrels	H: OMPA-like (From Topology)	T: OMPA-like	F: MSP	ECOD (1.6)
M [auth O]	MSP	e5kaiO1	A: beta barrels	X: Outer membrane meander beta-barrels	H: OMPA-like (From Topology)	T: OMPA-like	F: MSP	ECOD (1.6)
N [auth T]	PsbT	e5kaiT1	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)
HA [auth t]	PsbT	e5kait1	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)
IA [auth u]	PsbU	e5kaiu1	A: alpha arrays	X: HhH/H2TH	H: SAM/DNA-glycosylase	T: SAM domain-like	F: PsbU	ECOD (1.6)
O [auth U]	PsbU	e5kaiU1	A: alpha arrays	X: HhH/H2TH	H: SAM/DNA-glycosylase	T: SAM domain-like	F: PsbU	ECOD (1.6)
P [auth V]	Cytochrom_C550	e5kaiV1	A: alpha arrays	X: Cytochrome c-like	H: Cytochrome c (From Topology)	T: Cytochrome c	F: Cytochrom_C550	ECOD (1.6)
JA [auth v]	Cytochrom_C550	e5kaiv1	A: alpha arrays	X: Cytochrome c-like	H: Cytochrome c (From Topology)	T: Cytochrome c	F: Cytochrom_C550	ECOD (1.6)
KA [auth y]	PSII_Ycf12	e5kaiy1	A: extended segments	X: Photosystem II reaction center protein ycf12 (From Topology)	H: Photosystem II reaction center protein ycf12 (From Topology)	T: Photosystem II reaction center protein ycf12	F: PSII_Ycf12	ECOD (1.6)
Q [auth Y]	PSII_Ycf12	e5kaiY1	A: extended segments	X: Photosystem II reaction center protein ycf12 (From Topology)	H: Photosystem II reaction center protein ycf12 (From Topology)	T: Photosystem II reaction center protein ycf12	F: PSII_Ycf12	ECOD (1.6)
LA [auth x]	PsbX	e5kaix1	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)
R [auth X]	PsbX	e5kaiX1	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)
MA [auth z]	Ycf9	e5kaiz1	A: extended segments	X: PsbZ-like (From Topology)	H: PsbZ-like (From Topology)	T: PsbZ-like	F: Ycf9	ECOD (1.6)
S [auth Z]	Ycf9	e5kaiZ1	A: extended segments	X: PsbZ-like (From Topology)	H: PsbZ-like (From Topology)	T: PsbZ-like	F: Ycf9	ECOD (1.6)
V [auth b]	PSII_1st	e5kaib1	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)
V [auth b]	PSII_2nd	e5kaib2	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	e5kaiB1	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	e5kaiB2	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)
NA [auth r]	PsbY	e5kair1	A: extended segments	X: Photosystem II protein Y, psbY (From Topology)	H: Photosystem II protein Y, psbY (From Topology)	T: Photosystem II protein Y, psbY	F: PsbY	ECOD (1.6)
T [auth R]	PsbY	e5kaiR1	A: extended segments	X: Photosystem II protein Y, psbY (From Topology)	H: Photosystem II protein Y, psbY (From Topology)	T: Photosystem II protein Y, psbY	F: PsbY	ECOD (1.6)
C	PSII_1st	e5kaiC1	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)
W [auth c]	PSII_1st	e5kaic1	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	e5kaiD1	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)
X [auth d]	Photo_RC	e5kaid1	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)
E	Cytochrom_B559a	e5kaiE1	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)
Y [auth e]	Cytochrom_B559a	e5kaie1	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)
Z [auth f]	Cytochrom_B559	e5kaif1	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	e5kaiF1	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)
AA [auth h]	PsbH	e5kaih1	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)
G [auth H]	PsbH	e5kaiH1	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)
BA [auth i]	PsbI	e5kaii1	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)
H [auth I]	PsbI	e5kaiI1	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)
CA [auth j]	PsbJ	e5kaij1	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)
I [auth J]	PsbJ	e5kaiJ1	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)

Domain Annotation: CATH CATH Database Homepage

Chain	Domain	Class	Architecture	Topology	Homology	Provenance Source (Version)
GA [auth o]	2.40.160.30	Mainly Beta	Beta Barrel	Porin	Photosystem II, cytochrome c-550 precursor	CATH (4.3.0)
GA [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)
M [auth O]	2.40.160.30	Mainly Beta	Beta Barrel	Porin	Photosystem II, cytochrome c-550 precursor	CATH (4.3.0)
M [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)
IA [auth u]	1.10.150.320	Mainly Alpha	Orthogonal Bundle	DNA polymerase	domain 1	CATH (4.3.0)
O [auth U]	1.10.150.320	Mainly Alpha	Orthogonal Bundle	DNA polymerase	domain 1	CATH (4.3.0)
P [auth V]	1.10.760.10	Mainly Alpha	Orthogonal Bundle	Cytochrome Bc1 Complex	Chain D, domain 2	CATH (4.3.0)
JA [auth v]	1.10.760.10	Mainly Alpha	Orthogonal Bundle	Cytochrome Bc1 Complex	Chain D, domain 2	CATH (4.3.0)
MA [auth z]	1.10.287.740	Mainly Alpha	Orthogonal Bundle	Helix Hairpins	Photosystem II PsbZ, reaction centre	CATH (4.3.0)
S [auth Z]	1.10.287.740	Mainly Alpha	Orthogonal Bundle	Helix Hairpins	Photosystem II PsbZ, reaction centre	CATH (4.3.0)
V [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)
C	1.10.10.670	Mainly Alpha	Orthogonal Bundle	Arc Repressor Mutant, subunit A	photosystem ii from thermosynechococcus elongatus	CATH (4.3.0)
W [auth c]	1.10.10.670	Mainly Alpha	Orthogonal Bundle	Arc Repressor Mutant, subunit A	photosystem ii from thermosynechococcus elongatus	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)
Y [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)
AA [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)
G [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)

Protein Family Annotation Pfam Database Homepage

Chains	Accession	Name	Description	Comments	Source
A, U [auth a]	PF00124	Photosynthetic reaction centre protein (Photo_RC)	Photosynthetic reaction centre protein	-	Family
DA [auth k], J [auth K]	PF02533	Photosystem II 4 kDa reaction centre component (PsbK)	Photosystem II 4 kDa reaction centre component	-	Family
EA [auth l], K [auth L]	PF02419	PsbL protein (PsbL)	PsbL protein	-	Family
FA [auth m], L [auth M]	PF05151	Photosystem II reaction centre M protein (PsbM) (PsbM)	Photosystem II reaction centre M protein (PsbM)	-	Family
GA [auth o], M [auth O]	PF01716	Manganese-stabilising protein / photosystem II polypeptide (MSP)	Manganese-stabilising protein / photosystem II polypeptide	-	Family
HA [auth t], N [auth T]	PF01405	Photosystem II reaction centre T protein (PsbT)	Photosystem II reaction centre T protein	-	Family
IA [auth u], O [auth U]	PF06514	Photosystem II 12 kDa extrinsic protein (PsbU) (PsbU)	Photosystem II 12 kDa extrinsic protein (PsbU)	-	Family
JA [auth v], P [auth V]	PF14495	Cytochrome c-550 domain (Cytochrom_C550)	Cytochrome c-550 domain	This domain is a heme binding cytochrome known as cytochrome c550, or cytochrome c549, or PsbV [1].	Domain
KA [auth y], Q [auth Y]	PF05969	Photosystem II complex subunit Ycf12 (PSII_Ycf12)	Photosystem II complex subunit Ycf12	-	Family
LA [auth x], R [auth X]	PF06596	Photosystem II reaction centre X protein (PsbX) (PsbX)	Photosystem II reaction centre X protein (PsbX)	-	Family
MA [auth z], S [auth Z]	PF01737	YCF9 (Ycf9)	YCF9	-	Family
B, V [auth b]	PF00421	Photosystem II protein (PSII)	Photosystem II protein	-	Family
NA [auth r], T [auth R]	PF06298	Photosystem II protein Y (PsbY) (PsbY)	Photosystem II protein Y (PsbY)	-	Family
C, W [auth c]	PF00421	Photosystem II protein (PSII)	Photosystem II protein	-	Family
D, X [auth d]	PF00124	Photosynthetic reaction centre protein (Photo_RC)	Photosynthetic reaction centre protein	-	Family
E, Y [auth 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
E, Y [auth e]	PF00284	Lumenal portion of Cytochrome b559, alpha (gene psbE) subunit (Cytochrom_B559a)	Lumenal portion of Cytochrome b559, alpha (gene psbE) subunit	-	Family
F, Z [auth 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
AA [auth h], G [auth H]	PF00737	Photosystem II 10 kDa phosphoprotein (PsbH)	Photosystem II 10 kDa phosphoprotein	-	Family
BA [auth i], H [auth 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
CA [auth j], I [auth J]	PF01788	PsbJ (PsbJ)	PsbJ	-	Family

Gene Ontology: Gene Product Annotation Gene Ontology Database Homepage

Chains	Polymer	Molecular Function	Biological Process	Cellular Component
A, U [auth a]	Photosystem II protein D1 1	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 plasma membrane-derived chromatophore 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 plasma membrane-derived chromatophore membrane plasma membrane plasma membrane-derived chromatophore thylakoid membrane cell periphery plasma membrane-derived thylakoid membrane plasma membrane region bacterial thylakoid cytoplasm
DA [auth k], J [auth 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 plasma membrane-derived chromatophore membrane plasma membrane plasma membrane-derived chromatophore thylakoid membrane cell periphery plasma membrane-derived thylakoid membrane plasma membrane region bacterial thylakoid cytoplasm
EA [auth l], K [auth L]	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 plasma membrane-derived chromatophore membrane plasma membrane plasma membrane-derived chromatophore thylakoid membrane cell periphery plasma membrane-derived thylakoid membrane plasma membrane region bacterial thylakoid cytoplasm
FA [auth m], L [auth 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 plasma membrane-derived chromatophore 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 plasma membrane-derived chromatophore membrane plasma membrane plasma membrane-derived chromatophore thylakoid membrane cell periphery plasma membrane-derived thylakoid membrane plasma membrane region bacterial thylakoid cytoplasm
GA [auth o], M [auth O]	Photosystem II manganese-stabilizing polypeptide	oxidoreductase activity oxygen evolving activity catalytic activity	photosynthesis protein-containing complex organization photosynthesis, light reaction cellular metabolic process generation of precursor metabolites and energy photosystem II assembly cellular component organization cellular component biogenesis cellular component assembly protein-containing complex assembly cellular process metabolic process cellular component organization or biogenesis regulation of biological process photosynthesis protein-containing complex organization photosynthesis, light reaction cellular metabolic process generation of precursor metabolites and energy photosystem II assembly cellular component organization cellular component biogenesis cellular component assembly protein-containing complex assembly cellular process metabolic process 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	intracellular anatomical structure plasma membrane-derived chromatophore membrane membrane plasma membrane plasma membrane-derived chromatophore cellular anatomical entity thylakoid membrane intracellular organelle cell periphery plasma membrane-derived thylakoid membrane organelle intracellular non-membrane-bounded organelle plasma membrane region bacterial thylakoid intracellular anatomical structure plasma membrane-derived chromatophore membrane membrane plasma membrane plasma membrane-derived chromatophore cellular anatomical entity thylakoid membrane intracellular organelle cell periphery plasma membrane-derived thylakoid membrane organelle intracellular non-membrane-bounded organelle plasma membrane region bacterial thylakoid cytoplasm photosynthetic membrane thylakoid non-membrane-bounded organelle protein-containing complex photosystem catalytic complex photosystem II membrane protein complex photosystem II oxygen evolving complex oxidoreductase complex
HA [auth t], N [auth T]	Photosystem II reaction center protein T	-	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 plasma membrane-derived chromatophore membrane plasma membrane plasma membrane-derived chromatophore thylakoid membrane cell periphery plasma membrane-derived thylakoid membrane plasma membrane region bacterial thylakoid cytoplasm
IA [auth u], O [auth U]	Photosystem II 12 kDa extrinsic protein	-	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	intracellular anatomical structure plasma membrane-derived chromatophore membrane membrane plasma membrane plasma membrane-derived chromatophore cellular anatomical entity thylakoid membrane intracellular organelle cell periphery plasma membrane-derived thylakoid membrane organelle intracellular non-membrane-bounded organelle plasma membrane region bacterial thylakoid intracellular anatomical structure plasma membrane-derived chromatophore membrane membrane plasma membrane plasma membrane-derived chromatophore cellular anatomical entity thylakoid membrane intracellular organelle cell periphery plasma membrane-derived thylakoid membrane organelle intracellular non-membrane-bounded organelle plasma membrane region bacterial thylakoid cytoplasm photosynthetic membrane thylakoid non-membrane-bounded organelle extrinsic component of membrane protein-containing complex photosystem catalytic complex photosystem II membrane protein complex photosystem II oxygen evolving complex oxidoreductase complex
JA [auth v], P [auth V]	Cytochrome c-550	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 cellular metabolic process metabolic process cellular process generation of precursor metabolites and energy cellular respiration energy derivation by oxidation of organic compounds respiratory electron transport chain electron transport chain	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 plasma membrane-derived chromatophore 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 plasma membrane-derived chromatophore membrane plasma membrane plasma membrane-derived chromatophore thylakoid membrane cell periphery plasma membrane-derived thylakoid membrane plasma membrane region bacterial thylakoid cytoplasm
KA [auth y], Q [auth Y]	Photosystem II reaction center protein Ycf12	-	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 plasma membrane-derived chromatophore 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 plasma membrane-derived chromatophore membrane plasma membrane plasma membrane-derived chromatophore thylakoid membrane cell periphery plasma membrane-derived thylakoid membrane plasma membrane region bacterial thylakoid cytoplasm
LA [auth x], R [auth X]	Photosystem II reaction center X protein	-	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 plasma membrane-derived chromatophore 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 plasma membrane-derived chromatophore membrane plasma membrane plasma membrane-derived chromatophore thylakoid membrane cell periphery plasma membrane-derived thylakoid membrane plasma membrane region bacterial thylakoid cytoplasm
MA [auth z], S [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 plasma membrane-derived chromatophore membrane plasma membrane plasma membrane-derived chromatophore thylakoid membrane cell periphery plasma membrane-derived thylakoid membrane plasma membrane region bacterial thylakoid cytoplasm
B, V [auth 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 plasma membrane-derived chromatophore 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 plasma membrane-derived chromatophore membrane plasma membrane plasma membrane-derived chromatophore thylakoid membrane cell periphery plasma membrane-derived thylakoid membrane plasma membrane region bacterial thylakoid cytoplasm
NA [auth r], T [auth R]	Photosystem II protein Y	cation binding manganese ion binding transition metal ion binding ion binding binding metal ion binding small molecule binding	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 plasma membrane-derived chromatophore 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 plasma membrane-derived chromatophore membrane plasma membrane plasma membrane-derived chromatophore thylakoid membrane cell periphery plasma membrane-derived thylakoid membrane plasma membrane region bacterial thylakoid cytoplasm
C, W [auth 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 plasma membrane-derived chromatophore 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 plasma membrane-derived chromatophore membrane plasma membrane plasma membrane-derived chromatophore thylakoid membrane cell periphery plasma membrane-derived thylakoid membrane plasma membrane region bacterial thylakoid cytoplasm
D, X [auth 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 plasma membrane-derived chromatophore 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 plasma membrane-derived chromatophore membrane plasma membrane plasma membrane-derived chromatophore thylakoid membrane cell periphery plasma membrane-derived thylakoid membrane plasma membrane region bacterial thylakoid cytoplasm
E, Y [auth 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 plasma membrane-derived chromatophore membrane plasma membrane plasma membrane-derived chromatophore thylakoid membrane cell periphery plasma membrane-derived thylakoid membrane plasma membrane region bacterial thylakoid cytoplasm
F, Z [auth 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 plasma membrane-derived chromatophore membrane plasma membrane plasma membrane-derived chromatophore thylakoid membrane cell periphery plasma membrane-derived thylakoid membrane plasma membrane region bacterial thylakoid cytoplasm
AA [auth h], G [auth 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 plasma membrane-derived chromatophore 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 plasma membrane-derived chromatophore membrane plasma membrane plasma membrane-derived chromatophore thylakoid membrane cell periphery plasma membrane-derived thylakoid membrane plasma membrane region bacterial thylakoid cytoplasm
BA [auth i], H [auth I]	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 plasma membrane-derived chromatophore membrane plasma membrane plasma membrane-derived chromatophore thylakoid membrane cell periphery plasma membrane-derived thylakoid membrane plasma membrane region bacterial thylakoid cytoplasm
CA [auth j], I [auth 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 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 plasma membrane-derived chromatophore membrane plasma membrane plasma membrane-derived chromatophore thylakoid membrane cell periphery plasma membrane-derived thylakoid membrane plasma membrane region bacterial thylakoid cytoplasm

InterPro: Protein Family Classification InterPro Database Homepage

Chains	Accession	Name	Type
A, U [auth a]	IPR005867	Photosystem II protein D1	Family
A, U [auth a]	IPR036854	Photosystem II protein D1/D2 superfamily	Homologous Superfamily
A, U [auth a]	IPR000484	Photosynthetic reaction centre, L/M	Family
DA [auth k], J [auth K]	IPR037270	Photosystem II PsbK superfamily	Homologous Superfamily
DA [auth k], J [auth K]	IPR003687	Photosystem II PsbK	Family
EA [auth l], K [auth L]	IPR003372	Photosystem II PsbL	Family
EA [auth l], K [auth L]	IPR037266	Photosystem II PsbL superfamily	Homologous Superfamily
FA [auth m], L [auth M]	IPR007826	Photosystem II PsbM	Family
FA [auth m], L [auth M]	IPR037269	Photosystem II PsbM superfamily	Homologous Superfamily
GA [auth o], M [auth O]	IPR011250	Outer membrane protein/outer membrane enzyme PagP, beta-barrel	Homologous Superfamily
GA [auth o], M [auth O]	IPR002628	Photosystem II extrinsic protein O	Family
HA [auth t], N [auth T]	IPR001743	Photosystem II PsbT	Family
HA [auth t], N [auth T]	IPR037268	Photosystem II PsbT superfamily	Homologous Superfamily
IA [auth u], O [auth U]	IPR010527	Photosystem II PsbU, oxygen evolving complex	Family
JA [auth v], P [auth V]	IPR017851	Photosystem II extrinsic protein V, cytochrome c-550 precursor	Family
JA [auth v], P [auth V]	IPR016003	Photosystem II extrinsic protein V, cytochrome c-550 precursor-like	Family
JA [auth v], P [auth V]	IPR036909	Cytochrome c-like domain superfamily	Homologous Superfamily
JA [auth v], P [auth V]	IPR009056	Cytochrome c-like domain	Domain
JA [auth v], P [auth V]	IPR029490	Cytochrome c-550 domain	Domain
KA [auth y], Q [auth Y]	IPR010284	Photosystem II reaction center protein Ycf12	Family
LA [auth x], R [auth X]	IPR009518	Photosystem II PsbX	Family
LA [auth x], R [auth X]	IPR023431	Photosystem II PsbX, type 1 subfamily	Family
MA [auth z], S [auth Z]	IPR036512	Photosystem II PsbZ superfamily	Homologous Superfamily
MA [auth z], S [auth Z]	IPR002644	Photosystem II PsbZ, reaction centre	Family
B, V [auth b]	IPR036001	Photosystem antenna protein-like superfamily	Homologous Superfamily
B, V [auth b]	IPR000932	Photosystem antenna protein-like	Family
B, V [auth b]	IPR017486	Photosystem II CP47 reaction centre protein	Family
NA [auth r], T [auth R]	IPR009388	Photosystem II PsbY	Family
C, W [auth c]	IPR036001	Photosystem antenna protein-like superfamily	Homologous Superfamily
C, W [auth c]	IPR000932	Photosystem antenna protein-like	Family
C, W [auth c]	IPR005869	Photosystem II CP43 reaction centre protein	Family
C, W [auth c]	IPR044900	Photosystem II CP43 reaction centre protein superfamily	Homologous Superfamily
D, X [auth d]	IPR036854	Photosystem II protein D1/D2 superfamily	Homologous Superfamily
D, X [auth d]	IPR000484	Photosynthetic reaction centre, L/M	Family
D, X [auth d]	IPR005868	Photosystem II D2 protein	Family
E, Y [auth e]	IPR013081	Photosystem II cytochrome b559, N-terminal	Domain
E, Y [auth e]	IPR006217	Photosystem II cytochrome b559, alpha subunit	Family
E, Y [auth e]	IPR013082	Photosystem II cytochrome b559, alpha subunit, lumenal region	Domain
E, Y [auth e]	IPR037025	Photosystem II cytochrome b559, alpha subunit superfamily	Homologous Superfamily
E, Y [auth e]	IPR006216	Photosystem II cytochrome b559, conserved site	Conserved Site
F, Z [auth f]	IPR006241	Photosystem II cytochrome b559, beta subunit	Family
F, Z [auth f]	IPR013081	Photosystem II cytochrome b559, N-terminal	Domain
F, Z [auth f]	IPR006216	Photosystem II cytochrome b559, conserved site	Conserved Site
AA [auth h], G [auth H]	IPR036863	Photosystem II reaction centre protein H superfamily	Homologous Superfamily
AA [auth h], G [auth H]	IPR001056	Photosystem II reaction centre protein H	Family
BA [auth i], H [auth I]	IPR037271	Photosystem II PsbI superfamily	Homologous Superfamily
BA [auth i], H [auth I]	IPR003686	Photosystem II PsbI	Family
CA [auth j], I [auth J]	IPR002682	Photosystem II PsbJ	Family
CA [auth j], I [auth J]	IPR037267	Photosystem II PsbJ superfamily	Homologous Superfamily

Membrane Protein Annotation: PDBTM PDBTM Database Homepage

Chains	External Link	Comment
A, AA [auth h], B, BA [auth i], C A, AA [auth h], B, BA [auth i], C, CA [auth j], D, DA [auth k], E, EA [auth l], F, FA [auth m], G [auth H], GA [auth o], H [auth I], HA [auth t], I [auth J], IA [auth u], J [auth K], JA [auth v], K [auth L], KA [auth y], L [auth M], LA [auth x], M [auth O], MA [auth z], N [auth T], NA [auth r], O [auth U], P [auth V], Q [auth Y], R [auth X], S [auth Z], T [auth R], U [auth a], V [auth b], W [auth c], X [auth d], Y [auth e], Z [auth f]	PDBTM	Annotated as membrane protein by PDBTM

Membrane Protein Annotation: MemProtMD MemProtMD Database Homepage

Chains	External Link	Comment
A, AA [auth h], B, BA [auth i], C A, AA [auth h], B, BA [auth i], C, CA [auth j], D, DA [auth k], E, EA [auth l], F, FA [auth m], G [auth H], GA [auth o], H [auth I], HA [auth t], I [auth J], IA [auth u], J [auth K], JA [auth v], K [auth L], KA [auth y], L [auth M], LA [auth x], M [auth O], MA [auth z], N [auth T], NA [auth r], O [auth U], P [auth V], Q [auth Y], R [auth X], S [auth Z], T [auth R], U [auth a], V [auth b], W [auth c], X [auth d], Y [auth e], Z [auth f]	MemProtMD	Annotated as membrane protein by MemProtMD

Membrane Protein Annotation: mpstruc mpstruc Database Homepage

Chains	Resource Link	Group	Subgroup	Protein
A, AA [auth h], B, BA [auth i], C A, AA [auth h], B, BA [auth i], C, CA [auth j], D, DA [auth k], E, EA [auth l], F, FA [auth m], G [auth H], GA [auth o], H [auth I], HA [auth t], I [auth J], IA [auth u], J [auth K], JA [auth v], K [auth L], KA [auth y], L [auth M], LA [auth x], M [auth O], MA [auth z], N [auth T], NA [auth r], O [auth U], P [auth V], Q [auth Y], R [auth X], S [auth Z], T [auth R], U [auth a], V [auth b], W [auth c], X [auth d], Y [auth e], Z [auth f]	mpstruc	TRANSMEMBRANE PROTEINS: ALPHA-HELICAL	Photosystems	Photosystem II at room temperature in dark state

Protein Modification Annotation

Modified Residue(s)
Chain	Residue(s)	Description
FA [auth m], L [auth M]	FME	Parent Component: MET RESID: AA0021 , AA0566 PSI-MOD : N-formyl-L-methionine residue MOD:00030 , N-formyl-L-methionine (Met) MOD:00482 , N-[(L-histidin-1'-yl)methyl]-L-methionine (fMet) MOD:01890 , N-[(L-histidin-1'-yl)methyl]-L-methionine (Met) MOD:01891
HA [auth t], N [auth T]	FME	Parent Component: MET RESID: AA0021 , AA0566 , AA0021 , AA0566 PSI-MOD : N-formyl-L-methionine residue MOD:00030 , N-formyl-L-methionine (Met) MOD:00482 , N-[(L-histidin-1'-yl)methyl]-L-methionine (fMet) MOD:01890 , N-[(L-histidin-1'-yl)methyl]-L-methionine (Met) MOD:01891 , N-formyl-L-methionine residue MOD:00030 , N-formyl-L-methionine (Met) MOD:00482 , N-[(L-histidin-1'-yl)methyl]-L-methionine (fMet) MOD:01890 , N-[(L-histidin-1'-yl)methyl]-L-methionine (Met) MOD:01891
BA [auth i], H [auth I]	FME	Parent Component: MET RESID: AA0021 , AA0566 , AA0021 , AA0566 , AA0021 , AA0566 PSI-MOD : N-formyl-L-methionine residue MOD:00030 , N-formyl-L-methionine (Met) MOD:00482 , N-[(L-histidin-1'-yl)methyl]-L-methionine (fMet) MOD:01890 , N-[(L-histidin-1'-yl)methyl]-L-methionine (Met) MOD:01891 , N-formyl-L-methionine residue MOD:00030 , N-formyl-L-methionine (Met) MOD:00482 , N-[(L-histidin-1'-yl)methyl]-L-methionine (fMet) MOD:01890 , N-[(L-histidin-1'-yl)methyl]-L-methionine (Met) MOD:01891 , N-formyl-L-methionine residue MOD:00030 , N-formyl-L-methionine (Met) MOD:00482 , N-[(L-histidin-1'-yl)methyl]-L-methionine (fMet) MOD:01890 , N-[(L-histidin-1'-yl)methyl]-L-methionine (Met) MOD:01891