8IRF

XFEL structure of cyanobacterial photosystem II following two flashes (2F) with a 1-microsecond delay

External Resource: Annotation

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

Domain Annotation: SCOP2 Classification SCOP2 Database Homepage

Chains	Type	Family Name	Domain Identifier	Family Identifier	Provenance Source (Version)
C	SCOP2B Superfamily	Photosystem II antenna protein-like	8097552	3001674	SCOP2B (2022-06-29)
U [auth c]	SCOP2B Superfamily	Photosystem II antenna protein-like	8097552	3001674	SCOP2B (2022-06-29)
BA [auth k]	SCOP2B Superfamily	Photosystem II reaction center protein K, PsbK	8088607	3001585	SCOP2B (2022-06-29)
J [auth K]	SCOP2B Superfamily	Photosystem II reaction center protein K, PsbK	8088607	3001585	SCOP2B (2022-06-29)
CA [auth l]	SCOP2B Superfamily	Photosystem II reaction center protein L, PsbL	8093612	3001523	SCOP2B (2022-06-29)
K [auth L]	SCOP2B Superfamily	Photosystem II reaction center protein L, PsbL	8093612	3001523	SCOP2B (2022-06-29)
DA [auth m]	SCOP2B Superfamily	Photosystem II reaction center protein M, PsbM	8087180	3001573	SCOP2B (2022-06-29)
L [auth M]	SCOP2B Superfamily	Photosystem II reaction center protein M, PsbM	8087180	3001573	SCOP2B (2022-06-29)
EA [auth o]	SCOP2B Superfamily	OMPA barrel-like	8097550	3000208	SCOP2B (2022-06-29)
M [auth O]	SCOP2B Superfamily	OMPA barrel-like	8097550	3000208	SCOP2B (2022-06-29)
N [auth T]	SCOP2B Superfamily	Photosystem II reaction center protein T, PsbT	8101519	3001561	SCOP2B (2022-06-29)
FA [auth t]	SCOP2B Superfamily	Photosystem II reaction center protein T, PsbT	8101519	3001561	SCOP2B (2022-06-29)
JA [auth y]	SCOP2B Superfamily	Photosystem II reaction center protein Ycf12	8093135	3002680	SCOP2B (2022-06-29)
R [auth Y]	SCOP2B Superfamily	Photosystem II reaction center protein Ycf12	8093135	3002680	SCOP2B (2022-06-29)
MA [auth z]	SCOP2B Superfamily	PsbZ-like	8093510	3001624	SCOP2B (2022-06-29)
KA [auth Z]	SCOP2B Superfamily	PsbZ-like	8093510	3001624	SCOP2B (2022-06-29)
B	SCOP2B Superfamily	Photosystem II antenna protein-like	8097548	3001674	SCOP2B (2022-06-29)
T [auth b]	SCOP2B Superfamily	Photosystem II antenna protein-like	8097548	3001674	SCOP2B (2022-06-29)
D	SCOP2B Superfamily	Bacterial photosystem II reaction centre, L and M subunits	8097554	3000736	SCOP2B (2022-06-29)
V [auth d]	SCOP2B Superfamily	Bacterial photosystem II reaction centre, L and M subunits	8097554	3000736	SCOP2B (2022-06-29)
E	SCOP2B Superfamily	Cytochrome b559 subunits	8098482	3001602	SCOP2B (2022-06-29)
W [auth e]	SCOP2B Superfamily	Cytochrome b559 subunits	8098482	3001602	SCOP2B (2022-06-29)
X [auth f]	SCOP2B Superfamily	Cytochrome b559 subunits	8098484	3001602	SCOP2B (2022-06-29)
F	SCOP2B Superfamily	Cytochrome b559 subunits	8098484	3001602	SCOP2B (2022-06-29)
Y [auth h]	SCOP2B Superfamily	Photosystem II 10 kDa phosphoprotein PsbH	8098552	3001547	SCOP2B (2022-06-29)
G [auth H]	SCOP2B Superfamily	Photosystem II 10 kDa phosphoprotein PsbH	8098552	3001547	SCOP2B (2022-06-29)
H [auth I]	SCOP2B Superfamily	Photosystem II reaction center protein I, PsbI	8098486	3001590	SCOP2B (2022-06-29)
Z [auth i]	SCOP2B Superfamily	Photosystem II reaction center protein I, PsbI	8098486	3001590	SCOP2B (2022-06-29)
AA [auth j]	SCOP2B Superfamily	Photosystem II reaction center protein J, PsbJ	8099970	3001534	SCOP2B (2022-06-29)
I [auth J]	SCOP2B Superfamily	Photosystem II reaction center protein J, PsbJ	8099970	3001534	SCOP2B (2022-06-29)

Protein Family Annotation Pfam Database Homepage

Chains	Accession	Name	Description	Comments	Source
C, U [auth c]	PF00421	Photosystem II protein (PSII)	Photosystem II protein	-	Family
A, S [auth a]	PF00124	Photosynthetic reaction centre protein (Photo_RC)	Photosynthetic reaction centre protein	-	Family
BA [auth k], J [auth K]	PF02533	Photosystem II 4 kDa reaction centre component (PsbK)	Photosystem II 4 kDa reaction centre component	-	Family
DA [auth m], L [auth M]	PF05151	Photosystem II reaction centre M protein (PsbM) (PsbM)	Photosystem II reaction centre M protein (PsbM)	-	Family
FA [auth t], N [auth T]	PF01405	Photosystem II reaction centre T protein (PsbT)	Photosystem II reaction centre T protein	-	Family
GA [auth u], O [auth U]	PF06514	Photosystem II 12 kDa extrinsic protein (PsbU) (PsbU)	Photosystem II 12 kDa extrinsic protein (PsbU)	-	Family
HA [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 x], Q [auth X]	PF06596	Photosystem II reaction centre X protein (PsbX) (PsbX)	Photosystem II reaction centre X protein (PsbX)	-	Family
KA [auth Z], MA [auth z]	PF01737	YCF9 (Ycf9)	YCF9	-	Family
B, T [auth b]	PF00421	Photosystem II protein (PSII)	Photosystem II protein	-	Family
LA [auth R]	PF06298	Photosystem II protein Y (PsbY) (PsbY)	Photosystem II protein Y (PsbY)	-	Family
D, V [auth d]	PF00124	Photosynthetic reaction centre protein (Photo_RC)	Photosynthetic reaction centre protein	-	Family
E, W [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, W [auth e]	PF00284	Lumenal portion of Cytochrome b559, alpha (gene psbE) subunit (Cytochrom_B559a)	Lumenal portion of Cytochrome b559, alpha (gene psbE) subunit	-	Family
G [auth H], Y [auth h]	PF00737	Photosystem II 10 kDa phosphoprotein (PsbH)	Photosystem II 10 kDa phosphoprotein	-	Family
H [auth I], Z [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 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
C, U [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 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
A, S [auth a]	Photosystem II protein D1	oxidoreductase activity, acting on diphenols and related substances as donors, oxygen as acceptor oxidoreductase activity oxidoreductase activity, acting on diphenols and related substances as donors catalytic activity electron transfer activity electron transporter, transferring electrons within the cyclic electron transport pathway of photosynthesis activity oxygen evolving activity chlorophyll binding binding organic cyclic compound binding tetrapyrrole binding cation binding transition metal ion binding iron ion binding oxidoreductase activity, acting on diphenols and related substances as donors, oxygen as acceptor oxidoreductase activity oxidoreductase activity, acting on diphenols and related substances as donors catalytic activity electron transfer activity electron transporter, transferring electrons within the cyclic electron transport pathway of photosynthesis activity oxygen evolving activity chlorophyll binding binding organic cyclic compound binding tetrapyrrole binding cation binding transition metal ion binding iron ion binding ion binding metal ion binding small molecule binding	photosynthesis photosynthesis, light reaction photosynthetic electron transport chain 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 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
BA [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
CA [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 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 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 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 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 v], P [auth V]	Cytochrome c-550	binding organic cyclic compound binding tetrapyrrole binding heme binding cation binding transition metal ion binding iron ion binding ion binding metal ion binding small molecule binding electron transfer activity	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 cytochrome complex assembly protein-tetrapyrrole linkage protein-containing complex organization primary metabolic process cytochrome c-heme linkage 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 cytochrome complex assembly protein-tetrapyrrole linkage protein-containing complex organization primary metabolic process cytochrome c-heme linkage cellular component organization cellular component biogenesis cellular component assembly macromolecule modification protein-heme linkage protein-containing complex assembly protein metabolic process macromolecule metabolic process cellular component organization or biogenesis protein modification 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
IA [auth x], Q [auth X]	Photosystem II reaction center protein X	-	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 y], R [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
KA [auth Z], MA [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, T [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 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
LA [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 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
D, V [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 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
E, W [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 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
F, X [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 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
G [auth H], Y [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
H [auth I], Z [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 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

InterPro: Protein Family Classification InterPro Database Homepage

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

Protein Modification Annotation

Modified Residue(s)
Chain	Residue(s)	Description
DA [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
FA [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
H [auth I], Z [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