4TNH | pdb_00004tnh

RT XFEL structure of Photosystem II in the dark state at 4.9 A resolution

External Resource: Annotation

Domain Annotation: SCOP2 Classification
Domain Annotation: ECOD Classification
Protein Family Annotation
Gene Ontology: Gene Product Annotation
InterPro: Protein Family Classification
Membrane Protein Annotation: PDBTM
Membrane Protein Annotation: MemProtMD

Domain Annotation: SCOP2 Classification SCOP2 Database Homepage

Chains	Type	Family Name	Domain Identifier	Family Identifier	Provenance Source (Version)
I [auth J]	SCOP2B Superfamily	Photosystem II reaction center protein J, PsbJ	8032755	3001534	SCOP2B (2022-06-29)
CA [auth j]	SCOP2B Superfamily	Photosystem II reaction center protein J, PsbJ	8032755	3001534	SCOP2B (2022-06-29)
H [auth I]	SCOP2B Superfamily	Photosystem II reaction center protein I, PsbI	8032754	3001590	SCOP2B (2022-06-29)
BA [auth i]	SCOP2B Superfamily	Photosystem II reaction center protein I, PsbI	8032754	3001590	SCOP2B (2022-06-29)
G [auth H]	SCOP2B Superfamily	Photosystem II 10 kDa phosphoprotein PsbH	8032753	3001547	SCOP2B (2022-06-29)
AA [auth h]	SCOP2B Superfamily	Photosystem II 10 kDa phosphoprotein PsbH	8032753	3001547	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)
Y [auth e]	SCOP2B Superfamily	Cytochrome b559 subunits	8032749	3001602	SCOP2B (2022-06-29)
E	SCOP2B Superfamily	Cytochrome b559 subunits	8032749	3001602	SCOP2B (2022-06-29)
X [auth d]	SCOP2B Superfamily	Bacterial photosystem II reaction centre, L and M subunits	8032750	3000736	SCOP2B (2022-06-29)
D	SCOP2B Superfamily	Bacterial photosystem II reaction centre, L and M subunits	8032750	3000736	SCOP2B (2022-06-29)
W [auth c]	SCOP2B Superfamily	Photosystem II antenna protein-like	8032746	3001674	SCOP2B (2022-06-29)
C	SCOP2B Superfamily	Photosystem II antenna protein-like	8032746	3001674	SCOP2B (2022-06-29)
T [auth Z]	SCOP2B Superfamily	PsbZ-like	8032770	3001624	SCOP2B (2022-06-29)
NA [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)
Q [auth y]	SCOP2B Superfamily	Photosystem II reaction center protein Ycf12	8093136	3002680	SCOP2B (2022-06-29)
KA [auth g]	SCOP2B Superfamily	Photosystem II reaction center protein Ycf12	8093136	3002680	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)
O [auth U]	SCOP2B Superfamily	PsbU/PolX domain-like	8032768	3000893	SCOP2B (2022-06-29)
IA [auth u]	SCOP2B Superfamily	PsbU/PolX domain-like	8032768	3000893	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)
M [auth O]	SCOP2B Superfamily	OMPA barrel-like	8032765	3000208	SCOP2B (2022-06-29)
GA [auth o]	SCOP2B Superfamily	OMPA barrel-like	8032765	3000208	SCOP2B (2022-06-29)
L [auth M]	SCOP2B Superfamily	Photosystem II reaction center protein M, PsbM	8032762	3001573	SCOP2B (2022-06-29)
FA [auth m]	SCOP2B Superfamily	Photosystem II reaction center protein M, PsbM	8032762	3001573	SCOP2B (2022-06-29)
K [auth L]	SCOP2B Superfamily	Photosystem II reaction center protein L, PsbL	8032759	3001523	SCOP2B (2022-06-29)
EA [auth l]	SCOP2B Superfamily	Photosystem II reaction center protein L, PsbL	8032759	3001523	SCOP2B (2022-06-29)
J [auth K]	SCOP2B Superfamily	Photosystem II reaction center protein K, PsbK	8032757	3001585	SCOP2B (2022-06-29)
DA [auth k]	SCOP2B Superfamily	Photosystem II reaction center protein K, PsbK	8032757	3001585	SCOP2B (2022-06-29)
U [auth a]	SCOP2B Superfamily	Bacterial photosystem II reaction centre, L and M subunits	8032741	3000736	SCOP2B (2022-06-29)
A	SCOP2B Superfamily	Bacterial photosystem II reaction centre, L and M subunits	8032741	3000736	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)
I [auth J]	PsbJ	e4tnhJ1	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)
CA [auth j]	PsbJ	e4tnhj1	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)
H [auth I]	PsbI	e4tnhI1	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)
BA [auth i]	PsbI	e4tnhi1	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)
G [auth H]	PsbH	e4tnhH1	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)
AA [auth h]	PsbH	e4tnhh1	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)
Z [auth f]	Cytochrom_B559	e4tnhf1	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	e4tnhF1	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)
Y [auth e]	Cytochrom_B559a	e4tnhe1	A: extended segments	X: Cytochrome b559 subunits (From Topology)	H: Cytochrome b559 subunits (From Topology)	T: Cytochrome b559 subunits	F: Cytochrom_B559a	ECOD (1.6)
E	Cytochrom_B559a	e4tnhE1	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)
X [auth d]	Photo_RC	e4tnhd1	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)
D	Photo_RC	e4tnhD1	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)
W [auth c]	PSII_1st	e4tnhc1	A: alpha bundles	X: Photosystem II antenna protein-like (From Topology)	H: Photosystem II antenna protein-like (From Topology)	T: Photosystem II antenna protein-like	F: PSII_1st	ECOD (1.6)
C	PSII_1st	e4tnhC1	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)
T [auth Z]	Ycf9	e4tnhZ1	A: extended segments	X: PsbZ-like (From Topology)	H: PsbZ-like (From Topology)	T: PsbZ-like	F: Ycf9	ECOD (1.6)
NA [auth z]	Ycf9	e4tnhz1	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	e4tnhb1	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	e4tnhb2	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	e4tnhB1	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	e4tnhB2	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)
R [auth X]	PsbX	e4tnhX1	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)
LA [auth x]	PsbX	e4tnhx1	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)
Q [auth y]	PSII_Ycf12	e4tnhy1	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)
KA [auth g]	PSII_Ycf12	e4tnhg1	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)
P [auth V]	Cytochrom_C550	e4tnhV1	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	e4tnhv1	A: alpha arrays	X: Cytochrome c-like	H: Cytochrome c (From Topology)	T: Cytochrome c	F: Cytochrom_C550	ECOD (1.6)
O [auth U]	PsbU	e4tnhU1	A: alpha arrays	X: HhH/H2TH	H: SAM/DNA-glycosylase	T: SAM domain-like	F: PsbU	ECOD (1.6)
IA [auth u]	PsbU	e4tnhu1	A: alpha arrays	X: HhH/H2TH	H: SAM/DNA-glycosylase	T: SAM domain-like	F: PsbU	ECOD (1.6)
N [auth T]	PsbT	e4tnhT1	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	e4tnht1	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)
M [auth O]	MSP	e4tnhO1	A: beta barrels	X: Outer membrane meander beta-barrels	H: OMPA-like (From Topology)	T: OMPA-like	F: MSP	ECOD (1.6)
GA [auth o]	MSP	e4tnho1	A: beta barrels	X: Outer membrane meander beta-barrels	H: OMPA-like (From Topology)	T: OMPA-like	F: MSP	ECOD (1.6)
L [auth M]	PsbM	e4tnhM1	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)
FA [auth m]	PsbM	e4tnhm1	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)
K [auth L]	PsbL	e4tnhL1	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)
EA [auth l]	PsbL	e4tnhl1	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)
J [auth K]	PsbK	e4tnhK1	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)
DA [auth k]	PsbK	e4tnhk1	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)
U [auth a]	Photo_RC	e4tnha1	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)
A	Photo_RC	e4tnhA1	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)

Protein Family Annotation Pfam Database Homepage

Chains	Accession	Name	Description	Comments	Source
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
AA [auth h], G [auth H]	PF00737	Photosystem II 10 kDa phosphoprotein (PsbH)	Photosystem II 10 kDa phosphoprotein	-	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
D, X [auth d]	PF00124	Photosynthetic reaction centre protein (Photo_RC)	Photosynthetic reaction centre protein	-	Family
C, W [auth c]	PF00421	Photosystem II protein (PSII)	Photosystem II protein	-	Family
NA [auth z], T [auth Z]	PF01737	YCF9 (Ycf9)	YCF9	-	Family
LA [auth x], R [auth X]	PF06596	Photosystem II reaction centre X protein (PsbX) (PsbX)	Photosystem II reaction centre X protein (PsbX)	-	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
IA [auth u], O [auth U]	PF06514	Photosystem II 12 kDa extrinsic protein (PsbU) (PsbU)	Photosystem II 12 kDa extrinsic protein (PsbU)	-	Family
HA [auth t], N [auth T]	PF01405	Photosystem II reaction centre T protein (PsbT)	Photosystem II reaction centre T protein	The exact function of this protein is unknown. It probably consists of a single transmembrane spanning helix. The Swiss:P37256 protein, appears to be (i) a novel photosystem II subunit and (ii) required for maintaining optimal photosystem II activity ...	The exact function of this protein is unknown. It probably consists of a single transmembrane spanning helix. The Swiss:P37256 protein, appears to be (i) a novel photosystem II subunit and (ii) required for maintaining optimal photosystem II activity under adverse growth conditions [1].	Domain
FA [auth m], L [auth M]	PF05151	Photosystem II reaction centre M protein (PsbM) (PsbM)	Photosystem II reaction centre M protein (PsbM)	-	Family
EA [auth l], K [auth L]	PF02419	PsbL protein (PsbL)	PsbL protein	-	Family
A, U [auth a]	PF00124	Photosynthetic reaction centre protein (Photo_RC)	Photosynthetic reaction centre protein	-	Family

Gene Ontology: Gene Product Annotation Gene Ontology Database Homepage

Chains	Polymer	Molecular Function	Biological Process	Cellular Component
CA [auth j], I [auth J]	Photosystem II reaction center protein J	-	photosynthesis metabolic process cellular process	protein-containing complex photosystem intracellular anatomical structure photosystem II membrane membrane protein complex intracellular membraneless organelle photosystem II reaction center intracellular organelle cellular anatomical structure organelle membraneless organelle photosynthetic membrane thylakoid protein-containing complex photosystem intracellular anatomical structure photosystem II membrane membrane protein complex intracellular membraneless organelle photosystem II reaction center intracellular organelle cellular anatomical structure organelle membraneless organelle photosynthetic membrane thylakoid 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 metabolic process cellular process	protein-containing complex photosystem intracellular anatomical structure photosystem II membrane membrane protein complex intracellular membraneless organelle photosystem II reaction center intracellular organelle cellular anatomical structure organelle membraneless organelle photosynthetic membrane thylakoid protein-containing complex photosystem intracellular anatomical structure photosystem II membrane membrane protein complex intracellular membraneless organelle photosystem II reaction center intracellular organelle cellular anatomical structure organelle membraneless organelle photosynthetic membrane thylakoid 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 metabolic process cellular process	protein-containing complex photosystem intracellular anatomical structure photosystem II membrane membrane protein complex intracellular membraneless organelle intracellular organelle cellular anatomical structure organelle membraneless organelle photosynthetic membrane thylakoid plasma membrane-derived chromatophore membrane protein-containing complex photosystem intracellular anatomical structure photosystem II membrane membrane protein complex intracellular membraneless organelle intracellular organelle cellular anatomical structure organelle membraneless organelle photosynthetic membrane thylakoid 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 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 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 intracellular membraneless organelle photosystem II reaction center intracellular organelle cellular anatomical structure organelle membraneless organelle photosynthetic membrane thylakoid protein-containing complex photosystem intracellular anatomical structure photosystem II membrane membrane protein complex intracellular membraneless organelle photosystem II reaction center intracellular organelle cellular anatomical structure organelle membraneless organelle photosynthetic membrane thylakoid 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 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 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 intracellular membraneless organelle photosystem II reaction center intracellular organelle cellular anatomical structure organelle membraneless organelle photosynthetic membrane thylakoid protein-containing complex photosystem intracellular anatomical structure photosystem II membrane membrane protein complex intracellular membraneless organelle photosystem II reaction center intracellular organelle cellular anatomical structure organelle membraneless organelle photosynthetic membrane thylakoid 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	oxidoreductase activity oxygen evolving activity catalytic activity chlorophyll binding binding tetrapyrrole 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 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 intracellular membraneless organelle intracellular organelle cellular anatomical structure organelle membraneless organelle photosynthetic membrane thylakoid plasma membrane-derived chromatophore membrane protein-containing complex photosystem intracellular anatomical structure photosystem II membrane membrane protein complex intracellular membraneless organelle intracellular organelle cellular anatomical structure organelle membraneless organelle photosynthetic membrane thylakoid 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 protein	chlorophyll binding binding tetrapyrrole binding cation binding ion binding metal ion binding small molecule binding	photosynthesis photosynthesis, light reaction photosynthetic electron transport chain 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 intracellular membraneless organelle intracellular organelle cellular anatomical structure organelle membraneless organelle photosynthetic membrane thylakoid plasma membrane-derived chromatophore membrane protein-containing complex photosystem intracellular anatomical structure photosystem II membrane membrane protein complex intracellular membraneless organelle intracellular organelle cellular anatomical structure organelle membraneless organelle photosynthetic membrane thylakoid 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 z], T [auth Z]	Photosystem II reaction center protein Z	-	photosynthesis 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 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 intracellular membraneless organelle photosystem II reaction center intracellular organelle cellular anatomical structure organelle membraneless organelle photosynthetic membrane thylakoid protein-containing complex photosystem intracellular anatomical structure photosystem II membrane membrane protein complex intracellular membraneless organelle photosystem II reaction center intracellular organelle cellular anatomical structure organelle membraneless organelle photosynthetic membrane thylakoid 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 core light harvesting protein	chlorophyll binding binding tetrapyrrole binding	photosynthesis photosynthesis, light reaction photosynthetic electron transport chain 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 intracellular membraneless organelle intracellular organelle cellular anatomical structure organelle membraneless organelle photosynthetic membrane thylakoid plasma membrane-derived chromatophore membrane protein-containing complex photosystem intracellular anatomical structure photosystem II membrane membrane protein complex intracellular membraneless organelle intracellular organelle cellular anatomical structure organelle membraneless organelle photosynthetic membrane thylakoid 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 G], S [auth Y]	Photosystem II reaction center protein Y	-	-	-
LA [auth x], R [auth X]	Photosystem II reaction center X protein	-	photosynthesis metabolic process cellular process	protein-containing complex photosystem intracellular anatomical structure photosystem II membrane membrane protein complex intracellular membraneless organelle intracellular organelle cellular anatomical structure organelle membraneless organelle photosynthetic membrane thylakoid plasma membrane-derived chromatophore membrane protein-containing complex photosystem intracellular anatomical structure photosystem II membrane membrane protein complex intracellular membraneless organelle intracellular organelle cellular anatomical structure organelle membraneless organelle photosynthetic membrane thylakoid 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 g], Q [auth y]	Photosystem II reaction center protein Ycf12	-	photosynthesis metabolic process cellular process	protein-containing complex photosystem intracellular anatomical structure photosystem II membrane membrane protein complex intracellular membraneless organelle intracellular organelle cellular anatomical structure organelle membraneless organelle photosynthetic membrane thylakoid plasma membrane-derived chromatophore membrane protein-containing complex photosystem intracellular anatomical structure photosystem II membrane membrane protein complex intracellular membraneless organelle intracellular organelle cellular anatomical structure organelle membraneless organelle photosynthetic membrane thylakoid 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
JA [auth v], P [auth V]	Cytochrome c-550	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 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 intracellular membraneless organelle intracellular organelle cellular anatomical structure organelle membraneless organelle photosynthetic membrane thylakoid plasma membrane-derived chromatophore membrane protein-containing complex photosystem intracellular anatomical structure photosystem II membrane membrane protein complex intracellular membraneless organelle intracellular organelle cellular anatomical structure organelle membraneless organelle photosynthetic membrane thylakoid 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 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 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 intracellular membraneless organelle plasma membrane-derived chromatophore thylakoid membrane intracellular organelle cell periphery cellular anatomical structure plasma membrane-derived thylakoid membrane organelle membraneless organelle plasma membrane region intracellular anatomical structure plasma membrane-derived chromatophore membrane membrane plasma membrane intracellular membraneless organelle plasma membrane-derived chromatophore thylakoid membrane intracellular organelle cell periphery cellular anatomical structure plasma membrane-derived thylakoid membrane organelle membraneless organelle plasma membrane region bacterial thylakoid cytoplasm photosynthetic membrane thylakoid extrinsic component of membrane 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 metabolic process cellular process	protein-containing complex photosystem intracellular anatomical structure photosystem II membrane membrane protein complex intracellular membraneless organelle photosystem II reaction center intracellular organelle cellular anatomical structure organelle membraneless organelle photosynthetic membrane thylakoid protein-containing complex photosystem intracellular anatomical structure photosystem II membrane membrane protein complex intracellular membraneless organelle photosystem II reaction center intracellular organelle cellular anatomical structure organelle membraneless organelle photosynthetic membrane thylakoid 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 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 photosynthesis protein-containing complex organization photosynthesis, light reaction 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 generation of precursor metabolites and energy regulation of metabolic process	intracellular anatomical structure plasma membrane-derived chromatophore membrane membrane plasma membrane intracellular membraneless organelle plasma membrane-derived chromatophore thylakoid membrane intracellular organelle cell periphery cellular anatomical structure plasma membrane-derived thylakoid membrane organelle membraneless organelle plasma membrane region intracellular anatomical structure plasma membrane-derived chromatophore membrane membrane plasma membrane intracellular membraneless organelle plasma membrane-derived chromatophore thylakoid membrane intracellular organelle cell periphery cellular anatomical structure plasma membrane-derived thylakoid membrane organelle membraneless organelle plasma membrane region bacterial thylakoid cytoplasm photosynthetic membrane thylakoid protein-containing complex photosystem catalytic complex photosystem II membrane protein complex photosystem II oxygen evolving complex oxidoreductase complex
FA [auth m], L [auth M]	Photosystem II reaction center protein M	-	photosynthesis photosynthesis, light reaction metabolic process cellular process generation of precursor metabolites and energy	protein-containing complex photosystem intracellular anatomical structure photosystem II membrane membrane protein complex intracellular membraneless organelle intracellular organelle cellular anatomical structure organelle membraneless organelle photosynthetic membrane thylakoid plasma membrane-derived chromatophore membrane protein-containing complex photosystem intracellular anatomical structure photosystem II membrane membrane protein complex intracellular membraneless organelle intracellular organelle cellular anatomical structure organelle membraneless organelle photosynthetic membrane thylakoid 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 metabolic process cellular process	protein-containing complex photosystem intracellular anatomical structure photosystem II membrane membrane protein complex intracellular membraneless organelle photosystem II reaction center intracellular organelle cellular anatomical structure organelle membraneless organelle photosynthetic membrane thylakoid protein-containing complex photosystem intracellular anatomical structure photosystem II membrane membrane protein complex intracellular membraneless organelle photosystem II reaction center intracellular organelle cellular anatomical structure organelle membraneless organelle photosynthetic membrane thylakoid 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 metabolic process cellular process	protein-containing complex photosystem intracellular anatomical structure photosystem II membrane membrane protein complex intracellular membraneless organelle photosystem II reaction center intracellular organelle cellular anatomical structure organelle membraneless organelle photosynthetic membrane thylakoid protein-containing complex photosystem intracellular anatomical structure photosystem II membrane membrane protein complex intracellular membraneless organelle photosystem II reaction center intracellular organelle cellular anatomical structure organelle membraneless organelle photosynthetic membrane thylakoid 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
A, U [auth a]	Photosystem Q(B) protein 1	oxidoreductase activity oxygen evolving activity catalytic activity chlorophyll binding binding tetrapyrrole binding cation binding transition metal ion binding iron ion binding ion binding metal ion binding small molecule binding oxidoreductase activity, acting on diphenols and related substances as donors, oxygen as acceptor oxidoreductase activity, acting on diphenols and related substances as donors oxidoreductase activity oxygen evolving activity catalytic activity chlorophyll binding binding tetrapyrrole binding cation binding transition metal ion binding iron ion binding ion binding metal ion binding small molecule binding oxidoreductase activity, acting on diphenols and related substances as donors, oxygen as acceptor oxidoreductase activity, acting on diphenols and related substances as donors electron transfer activity	response to stimulus response to chemical response to stress response to herbicide response to toxic substance photosynthesis photosynthesis, light reaction photosynthetic electron transport chain 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 intracellular membraneless organelle intracellular organelle cellular anatomical structure organelle membraneless organelle photosynthetic membrane thylakoid plasma membrane-derived chromatophore membrane protein-containing complex photosystem intracellular anatomical structure photosystem II membrane membrane protein complex intracellular membraneless organelle intracellular organelle cellular anatomical structure organelle membraneless organelle photosynthetic membrane thylakoid 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
CA [auth j], I [auth J]	IPR002682	Photosystem II PsbJ	Family
CA [auth j], I [auth J]	IPR037267	Photosystem II PsbJ superfamily	Homologous Superfamily
BA [auth i], H [auth I]	IPR037271	Photosystem II PsbI superfamily	Homologous Superfamily
BA [auth i], H [auth I]	IPR003686	Photosystem II PsbI	Family
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
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
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
D, X [auth d]	IPR005868	Photosystem II D2	Family
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]	IPR055265	Photosynthetic reaction centre, L/M, conserved site	Conserved Site
D, X [auth d]	IPR055266	Photosystem II protein D1/D2	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
NA [auth z], T [auth Z]	IPR036512	Photosystem II PsbZ superfamily	Homologous Superfamily
NA [auth z], T [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
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
KA [auth g], Q [auth y]	IPR010284	Photosystem II reaction center protein Ycf12	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
IA [auth u], O [auth U]	IPR010527	Photosystem II PsbU, oxygen evolving complex	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
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
FA [auth m], L [auth M]	IPR007826	Photosystem II PsbM	Family
FA [auth m], L [auth M]	IPR037269	Photosystem II PsbM superfamily	Homologous Superfamily
EA [auth l], K [auth L]	IPR003372	Photosystem II PsbL	Family
EA [auth l], K [auth L]	IPR037266	Photosystem II PsbL superfamily	Homologous Superfamily
DA [auth k], J [auth K]	IPR037270	Photosystem II PsbK superfamily	Homologous Superfamily
DA [auth k], J [auth K]	IPR003687	Photosystem II PsbK	Family
A, U [auth a]	IPR036854	Photosystem II protein D1/D2 superfamily	Homologous Superfamily
A, U [auth a]	IPR005867	Photosystem II protein D1	Family
A, U [auth a]	IPR000484	Photosynthetic reaction centre, L/M	Family
A, U [auth a]	IPR055265	Photosynthetic reaction centre, L/M, conserved site	Conserved Site
A, U [auth a]	IPR055266	Photosystem II protein D1/D2	Family

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 g], L [auth M], LA [auth x], M [auth O], N [auth T], NA [auth z], O [auth U], P [auth V], Q [auth y], R [auth X], T [auth Z], 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 g], L [auth M], LA [auth x], M [auth O], N [auth T], NA [auth z], O [auth U], P [auth V], Q [auth y], R [auth X], T [auth Z], 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