Annotations: 8EQM

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	8105700	3000736	SCOP2B (2022-06-29)
Q [auth a]	SCOP2B Superfamily	Bacterial photosystem II reaction centre L and M subunits	8105700	3000736	SCOP2B (2022-06-29)
B	SCOP2B Superfamily	Photosystem II antenna protein-like	8105702	3001674	SCOP2B (2022-06-29)
R [auth b]	SCOP2B Superfamily	Photosystem II antenna protein-like	8105702	3001674	SCOP2B (2022-06-29)
C	SCOP2B Superfamily	Photosystem II antenna protein-like	8105704	3001674	SCOP2B (2022-06-29)
S [auth c]	SCOP2B Superfamily	Photosystem II antenna protein-like	8105704	3001674	SCOP2B (2022-06-29)
D	SCOP2B Superfamily	Bacterial photosystem II reaction centre L and M subunits	8105706	3000736	SCOP2B (2022-06-29)
T [auth d]	SCOP2B Superfamily	Bacterial photosystem II reaction centre L and M subunits	8105706	3000736	SCOP2B (2022-06-29)
F	SCOP2B Superfamily	Cytochrome b559 subunits	8105708	3001602	SCOP2B (2022-06-29)
V [auth f]	SCOP2B Superfamily	Cytochrome b559 subunits	8105708	3001602	SCOP2B (2022-06-29)
I [auth K]	SCOP2B Superfamily	Photosystem II reaction center protein K PsbK	8105720	3001585	SCOP2B (2022-06-29)
Y [auth k]	SCOP2B Superfamily	Photosystem II reaction center protein K PsbK	8105720	3001585	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	PF00124	e8eqmA1	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: PF00124	ECOD (1.6)
Q [auth a]	PF00124	e8eqma1	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: PF00124	ECOD (1.6)
J [auth L]	PF02419	e8eqmL1	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: PF02419	ECOD (1.6)
Z [auth l]	PF02419	e8eqml1	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: PF02419	ECOD (1.6)
AA [auth m]	PF05151	e8eqmm1	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: PF05151	ECOD (1.6)
K [auth M]	PF05151	e8eqmM1	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: PF05151	ECOD (1.6)
BA [auth o]	PF01716	e8eqmo1	A: beta barrels	X: Outer membrane meander beta-barrels	H: OMPA-like (From Topology)	T: OMPA-like	F: PF01716	ECOD (1.6)
L [auth O]	PF01716	e8eqmO1	A: beta barrels	X: Outer membrane meander beta-barrels	H: OMPA-like (From Topology)	T: OMPA-like	F: PF01716	ECOD (1.6)
CA [auth t]	PF01405	e8eqmt1	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: PF01405	ECOD (1.6)
M [auth T]	PF01405	e8eqmT1	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: PF01405	ECOD (1.6)
DA [auth u]	PF06514	e8eqmu1	A: alpha arrays	X: HhH/H2TH	H: SAM/DNA-glycosylase	T: SAM domain-like	F: PF06514	ECOD (1.6)
N [auth U]	PF06514	e8eqmU1	A: alpha arrays	X: HhH/H2TH	H: SAM/DNA-glycosylase	T: SAM domain-like	F: PF06514	ECOD (1.6)
EA [auth v]	PF14495	e8eqmv1	A: alpha arrays	X: Cytochrome c-like	H: Cytochrome c (From Topology)	T: Cytochrome c	F: PF14495	ECOD (1.6)
O [auth V]	PF14495	e8eqmV1	A: alpha arrays	X: Cytochrome c-like	H: Cytochrome c (From Topology)	T: Cytochrome c	F: PF14495	ECOD (1.6)
FA [auth x]	PF06596	e8eqmx1	A: extended segments	X: Photosystem II PsbX protein (From Topology)	H: Photosystem II PsbX protein (From Topology)	T: Photosystem II PsbX protein	F: PF06596	ECOD (1.6)
P [auth X]	PF06596	e8eqmX1	A: extended segments	X: Photosystem II PsbX protein (From Topology)	H: Photosystem II PsbX protein (From Topology)	T: Photosystem II PsbX protein	F: PF06596	ECOD (1.6)
B	PF00421	e8eqmB2	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: PF00421	ECOD (1.6)
B	PF00421	e8eqmB1	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: PF00421	ECOD (1.6)
R [auth b]	PF00421	e8eqmb2	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: PF00421	ECOD (1.6)
R [auth b]	PF00421	e8eqmb1	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: PF00421	ECOD (1.6)
C	PF00421	e8eqmC1	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: PF00421	ECOD (1.6)
S [auth c]	PF00421	e8eqmc1	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: PF00421	ECOD (1.6)
D	PF00124	e8eqmD1	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: PF00124	ECOD (1.6)
T [auth d]	PF00124	e8eqmd1	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: PF00124	ECOD (1.6)
E	PF00284	e8eqmE1	A: extended segments	X: Cytochrome b559 subunits (From Topology)	H: Cytochrome b559 subunits (From Topology)	T: Cytochrome b559 subunits	F: PF00284	ECOD (1.6)
U [auth e]	PF00284	e8eqme1	A: extended segments	X: Cytochrome b559 subunits (From Topology)	H: Cytochrome b559 subunits (From Topology)	T: Cytochrome b559 subunits	F: PF00284	ECOD (1.6)
F	PF00283	e8eqmF1	A: extended segments	X: Cytochrome b559 subunits (From Topology)	H: Cytochrome b559 subunits (From Topology)	T: Cytochrome b559 subunits	F: PF00283	ECOD (1.6)
V [auth f]	PF00283	e8eqmf1	A: extended segments	X: Cytochrome b559 subunits (From Topology)	H: Cytochrome b559 subunits (From Topology)	T: Cytochrome b559 subunits	F: PF00283	ECOD (1.6)
G [auth H]	PF00737	e8eqmH1	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: PF00737	ECOD (1.6)
W [auth h]	PF00737	e8eqmh1	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: PF00737	ECOD (1.6)
H [auth I]	PF02532	e8eqmI1	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: PF02532	ECOD (1.6)
X [auth i]	PF02532	e8eqmi1	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: PF02532	ECOD (1.6)
I [auth K]	PF02533	e8eqmK1	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: PF02533	ECOD (1.6)
Y [auth k]	PF02533	e8eqmk1	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: PF02533	ECOD (1.6)

Protein Family Annotation Pfam Database Homepage

Chains	Accession	Name	Description	Comments	Source
A, Q [auth a]	PF00124	Photosynthetic reaction centre protein (Photo_RC)	Photosynthetic reaction centre protein	-	Family
J [auth L], Z [auth l]	PF02419	PsbL protein (PsbL)	PsbL protein	-	Family
AA [auth m], K [auth M]	PF05151	Photosystem II reaction centre M protein (PsbM) (PsbM)	Photosystem II reaction centre M protein (PsbM)	-	Family
BA [auth o], L [auth O]	PF01716	Manganese-stabilising protein / photosystem II polypeptide (MSP)	Manganese-stabilising protein / photosystem II polypeptide	-	Family
CA [auth t], M [auth T]	PF01405	Photosystem II reaction centre T protein (PsbT)	Photosystem II reaction centre T protein	-	Family
DA [auth u], N [auth U]	PF06514	Photosystem II 12 kDa extrinsic protein (PsbU) (PsbU)	Photosystem II 12 kDa extrinsic protein (PsbU)	-	Family
EA [auth v], O [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
FA [auth x], P [auth X]	PF06596	Photosystem II reaction centre X protein (PsbX) (PsbX)	Photosystem II reaction centre X protein (PsbX)	-	Family
B, R [auth b]	PF00421	Photosystem II protein (PSII)	Photosystem II protein	-	Family
C, S [auth c]	PF00421	Photosystem II protein (PSII)	Photosystem II protein	-	Family
D, T [auth d]	PF00124	Photosynthetic reaction centre protein (Photo_RC)	Photosynthetic reaction centre protein	-	Family
E, U [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, U [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, V [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
G [auth H], W [auth h]	PF00737	Photosystem II 10 kDa phosphoprotein (PsbH)	Photosystem II 10 kDa phosphoprotein	-	Family
H [auth I], X [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
I [auth K], Y [auth k]	PF02533	Photosystem II 4 kDa reaction centre component (PsbK)	Photosystem II 4 kDa reaction centre component	-	Family

Gene Ontology: Gene Product Annotation Gene Ontology Database Homepage

Chains	Polymer	Molecular Function	Biological Process	Cellular Component
A, Q [auth a]	Photosystem II protein D1	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 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
J [auth L], Z [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
AA [auth m], K [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
BA [auth o], L [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
CA [auth t], M [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
DA [auth u], N [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
EA [auth v], O [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
FA [auth x], P [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
B, R [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
C, S [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, T [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, U [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, V [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
G [auth H], W [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
H [auth I], X [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
I [auth K], Y [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

InterPro: Protein Family Classification InterPro Database Homepage

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

Membrane Protein Annotation: OPM OPM Database Homepage

Chains	External Link	Type	Class	Superfamily	Family
A, AA [auth m], B, BA [auth o], C A, AA [auth m], B, BA [auth o], C, CA [auth t], D, DA [auth u], E, EA [auth v], F, FA [auth x], G [auth H], H [auth I], I [auth K], J [auth L], K [auth M], L [auth O], M [auth T], N [auth U], O [auth V], P [auth X], Q [auth a], R [auth b], S [auth c], T [auth d], U [auth e], V [auth f], W [auth h], X [auth i], Y [auth k], Z [auth l]	OPM	Transmembrane	Alpha-helical polytopic	Photosystems	Photosystem II

Membrane Protein Annotation: PDBTM PDBTM Database Homepage

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