7FIX

Cryo-EM structure of cyanobacterial photosystem I in the presence of ferredoxin and cytochrome c6

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: OPM
Membrane Protein Annotation: mpstruc

Domain Annotation: SCOP2 Classification SCOP2 Database Homepage

Chains	Type	Family Name	Domain Identifier	Family Identifier	Provenance Source (Version)
A [auth A1]	SCOP2B Superfamily	Photosystem I subunits PsaA/PsaB	8034272	3000850	SCOP2B (2022-06-29)
AA [auth A3]	SCOP2B Superfamily	Photosystem I subunits PsaA/PsaB	8034272	3000850	SCOP2B (2022-06-29)
N [auth A2]	SCOP2B Superfamily	Photosystem I subunits PsaA/PsaB	8034272	3000850	SCOP2B (2022-06-29)
J [auth L1]	SCOP2B Superfamily	Photosystem I reaction center subunit XI, PsaL	8034291	3000870	SCOP2B (2022-06-29)
JA [auth L3]	SCOP2B Superfamily	Photosystem I reaction center subunit XI, PsaL	8034291	3000870	SCOP2B (2022-06-29)
W [auth L2]	SCOP2B Superfamily	Photosystem I reaction center subunit XI, PsaL	8034291	3000870	SCOP2B (2022-06-29)
K [auth M1]	SCOP2B Superfamily	Subunit XII of photosystem I reaction centre, PsaM	8034290	3000829	SCOP2B (2022-06-29)
KA [auth M3]	SCOP2B Superfamily	Subunit XII of photosystem I reaction centre, PsaM	8034290	3000829	SCOP2B (2022-06-29)
X [auth M2]	SCOP2B Superfamily	Subunit XII of photosystem I reaction centre, PsaM	8034290	3000829	SCOP2B (2022-06-29)
L [auth R1]	SCOP2B Superfamily	2Fe-2S ferredoxin-like	8034515	3000113	SCOP2B (2022-06-29)
LA [auth R3]	SCOP2B Superfamily	2Fe-2S ferredoxin-like	8034515	3000113	SCOP2B (2022-06-29)
Y [auth R2]	SCOP2B Superfamily	2Fe-2S ferredoxin-like	8034515	3000113	SCOP2B (2022-06-29)
M [auth X1]	SCOP2B Superfamily	Subunit PsaX of photosystem I reaction centre	8034292	3000838	SCOP2B (2022-06-29)
MA [auth X3]	SCOP2B Superfamily	Subunit PsaX of photosystem I reaction centre	8034292	3000838	SCOP2B (2022-06-29)
Z [auth X2]	SCOP2B Superfamily	Subunit PsaX of photosystem I reaction centre	8034292	3000838	SCOP2B (2022-06-29)
B [auth B1]	SCOP2B Superfamily	Photosystem I subunits PsaA/PsaB	8034274	3000850	SCOP2B (2022-06-29)
BA [auth B3]	SCOP2B Superfamily	Photosystem I subunits PsaA/PsaB	8034274	3000850	SCOP2B (2022-06-29)
O [auth B2]	SCOP2B Superfamily	Photosystem I subunits PsaA/PsaB	8034274	3000850	SCOP2B (2022-06-29)
C [auth C1]	SCOP2B Superfamily	4Fe-4S ferredoxins	8034277	3000020	SCOP2B (2022-06-29)
CA [auth C3]	SCOP2B Superfamily	4Fe-4S ferredoxins	8034277	3000020	SCOP2B (2022-06-29)
P [auth C2]	SCOP2B Superfamily	4Fe-4S ferredoxins	8034277	3000020	SCOP2B (2022-06-29)
D [auth D1]	SCOP2B Superfamily	Photosystem I subunit PsaD	8034279	3000951	SCOP2B (2022-06-29)
DA [auth D3]	SCOP2B Superfamily	Photosystem I subunit PsaD	8034279	3000951	SCOP2B (2022-06-29)
Q [auth D2]	SCOP2B Superfamily	Photosystem I subunit PsaD	8034279	3000951	SCOP2B (2022-06-29)
E [auth E1]	SCOP2B Superfamily	Electron transport accessory proteins	8034282	3000325	SCOP2B (2022-06-29)
EA [auth E3]	SCOP2B Superfamily	Electron transport accessory proteins	8034282	3000325	SCOP2B (2022-06-29)
R [auth E2]	SCOP2B Superfamily	Electron transport accessory proteins	8034282	3000325	SCOP2B (2022-06-29)
F [auth F1]	SCOP2B Superfamily	Subunit III of photosystem I reaction centre, PsaF	8034284	3000813	SCOP2B (2022-06-29)
FA [auth F3]	SCOP2B Superfamily	Subunit III of photosystem I reaction centre, PsaF	8034284	3000813	SCOP2B (2022-06-29)
S [auth F2]	SCOP2B Superfamily	Subunit III of photosystem I reaction centre, PsaF	8034284	3000813	SCOP2B (2022-06-29)
G [auth I1]	SCOP2B Superfamily	Subunit VIII of photosystem I reaction centre, PsaI	8034286	3000819	SCOP2B (2022-06-29)
GA [auth I3]	SCOP2B Superfamily	Subunit VIII of photosystem I reaction centre, PsaI	8034286	3000819	SCOP2B (2022-06-29)
T [auth I2]	SCOP2B Superfamily	Subunit VIII of photosystem I reaction centre, PsaI	8034286	3000819	SCOP2B (2022-06-29)
H [auth J1]	SCOP2B Superfamily	Subunit IX of photosystem I reaction centre, PsaJ	8034287	3000824	SCOP2B (2022-06-29)
HA [auth J3]	SCOP2B Superfamily	Subunit IX of photosystem I reaction centre, PsaJ	8034287	3000824	SCOP2B (2022-06-29)
U [auth J2]	SCOP2B Superfamily	Subunit IX of photosystem I reaction centre, PsaJ	8034287	3000824	SCOP2B (2022-06-29)
I [auth K1]	SCOP2B Superfamily	Photosystem I reaction center subunit X, PsaK	8034288	3000859	SCOP2B (2022-06-29)
IA [auth K3]	SCOP2B Superfamily	Photosystem I reaction center subunit X, PsaK	8034288	3000859	SCOP2B (2022-06-29)
V [auth K2]	SCOP2B Superfamily	Photosystem I reaction center subunit X, PsaK	8034288	3000859	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 [auth A1]	PsaA_PsaB_C	e7fixA11	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: PsaA_PsaB_C	ECOD (1.6)
A [auth A1]	PsaA_PsaB_N	e7fixA12	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: PsaA_PsaB_N	ECOD (1.6)
AA [auth A3]	PsaA_PsaB_C	e7fixA31	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: PsaA_PsaB_C	ECOD (1.6)
AA [auth A3]	PsaA_PsaB_N	e7fixA32	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: PsaA_PsaB_N	ECOD (1.6)
N [auth A2]	PsaA_PsaB_C	e7fixA22	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: PsaA_PsaB_C	ECOD (1.6)
N [auth A2]	PsaA_PsaB_N	e7fixA21	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: PsaA_PsaB_N	ECOD (1.6)
J [auth L1]	PsaL	e7fixL11	A: alpha bundles	X: Photosystem I reaction center subunit XI, PsaL (From Topology)	H: Photosystem I reaction center subunit XI, PsaL (From Topology)	T: Photosystem I reaction center subunit XI, PsaL	F: PsaL	ECOD (1.6)
JA [auth L3]	PsaL	e7fixL31	A: alpha bundles	X: Photosystem I reaction center subunit XI, PsaL (From Topology)	H: Photosystem I reaction center subunit XI, PsaL (From Topology)	T: Photosystem I reaction center subunit XI, PsaL	F: PsaL	ECOD (1.6)
W [auth L2]	PsaL	e7fixL21	A: alpha bundles	X: Photosystem I reaction center subunit XI, PsaL (From Topology)	H: Photosystem I reaction center subunit XI, PsaL (From Topology)	T: Photosystem I reaction center subunit XI, PsaL	F: PsaL	ECOD (1.6)
K [auth M1]	PsaM	e7fixM11	A: extended segments	X: Subunit XII of photosystem I reaction centre, PsaM (From Topology)	H: Subunit XII of photosystem I reaction centre, PsaM (From Topology)	T: Subunit XII of photosystem I reaction centre, PsaM	F: PsaM	ECOD (1.6)
KA [auth M3]	PsaM	e7fixM31	A: extended segments	X: Subunit XII of photosystem I reaction centre, PsaM (From Topology)	H: Subunit XII of photosystem I reaction centre, PsaM (From Topology)	T: Subunit XII of photosystem I reaction centre, PsaM	F: PsaM	ECOD (1.6)
X [auth M2]	PsaM	e7fixM21	A: extended segments	X: Subunit XII of photosystem I reaction centre, PsaM (From Topology)	H: Subunit XII of photosystem I reaction centre, PsaM (From Topology)	T: Subunit XII of photosystem I reaction centre, PsaM	F: PsaM	ECOD (1.6)
L [auth R1]	Fer2	e7fixR11	A: a+b two layers	X: beta-Grasp	H: Ubiquitin-related	T: Ubiquitin-like	F: Fer2	ECOD (1.6)
LA [auth R3]	Fer2	e7fixR31	A: a+b two layers	X: beta-Grasp	H: Ubiquitin-related	T: Ubiquitin-like	F: Fer2	ECOD (1.6)
Y [auth R2]	Fer2	e7fixR21	A: a+b two layers	X: beta-Grasp	H: Ubiquitin-related	T: Ubiquitin-like	F: Fer2	ECOD (1.6)
M [auth X1]	PsaX	e7fixX11	A: extended segments	X: Subunit PsaX of photosystem I reaction centre (From Topology)	H: Subunit PsaX of photosystem I reaction centre (From Topology)	T: Subunit PsaX of photosystem I reaction centre	F: PsaX	ECOD (1.6)
MA [auth X3]	PsaX	e7fixX31	A: extended segments	X: Subunit PsaX of photosystem I reaction centre (From Topology)	H: Subunit PsaX of photosystem I reaction centre (From Topology)	T: Subunit PsaX of photosystem I reaction centre	F: PsaX	ECOD (1.6)
Z [auth X2]	PsaX	e7fixX21	A: extended segments	X: Subunit PsaX of photosystem I reaction centre (From Topology)	H: Subunit PsaX of photosystem I reaction centre (From Topology)	T: Subunit PsaX of photosystem I reaction centre	F: PsaX	ECOD (1.6)
B [auth B1]	PsaA_PsaB_C	e7fixB12	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: PsaA_PsaB_C	ECOD (1.6)
B [auth B1]	PsaA_PsaB_N	e7fixB11	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: PsaA_PsaB_N	ECOD (1.6)
BA [auth B3]	PsaA_PsaB_C	e7fixB32	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: PsaA_PsaB_C	ECOD (1.6)
BA [auth B3]	PsaA_PsaB_N	e7fixB31	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: PsaA_PsaB_N	ECOD (1.6)
O [auth B2]	PsaA_PsaB_C	e7fixB22	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: PsaA_PsaB_C	ECOD (1.6)
O [auth B2]	PsaA_PsaB_N	e7fixB21	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: PsaA_PsaB_N	ECOD (1.6)
C [auth C1]	Fer4_21_1	e7fixC11	A: a+b two layers	X: 4Fe-4S ferredoxin (From Topology)	H: 4Fe-4S ferredoxin (From Topology)	T: 4Fe-4S ferredoxin	F: Fer4_21_1	ECOD (1.6)
CA [auth C3]	Fer4_21_1	e7fixC31	A: a+b two layers	X: 4Fe-4S ferredoxin (From Topology)	H: 4Fe-4S ferredoxin (From Topology)	T: 4Fe-4S ferredoxin	F: Fer4_21_1	ECOD (1.6)
P [auth C2]	Fer4_21_1	e7fixC21	A: a+b two layers	X: 4Fe-4S ferredoxin (From Topology)	H: 4Fe-4S ferredoxin (From Topology)	T: 4Fe-4S ferredoxin	F: Fer4_21_1	ECOD (1.6)
D [auth D1]	PsaD	e7fixD11	A: a+b two layers	X: Photosystem I subunit PsaD (From Topology)	H: Photosystem I subunit PsaD (From Topology)	T: Photosystem I subunit PsaD	F: PsaD	ECOD (1.6)
DA [auth D3]	PsaD	e7fixD31	A: a+b two layers	X: Photosystem I subunit PsaD (From Topology)	H: Photosystem I subunit PsaD (From Topology)	T: Photosystem I subunit PsaD	F: PsaD	ECOD (1.6)
Q [auth D2]	PsaD	e7fixD21	A: a+b two layers	X: Photosystem I subunit PsaD (From Topology)	H: Photosystem I subunit PsaD (From Topology)	T: Photosystem I subunit PsaD	F: PsaD	ECOD (1.6)
E [auth E1]	PSI_PsaE	e7fixE11	A: beta barrels	X: SH3	H: SH3	T: SH3	F: PSI_PsaE	ECOD (1.6)
EA [auth E3]	PSI_PsaE	e7fixE31	A: beta barrels	X: SH3	H: SH3	T: SH3	F: PSI_PsaE	ECOD (1.6)
R [auth E2]	PSI_PsaE	e7fixE21	A: beta barrels	X: SH3	H: SH3	T: SH3	F: PSI_PsaE	ECOD (1.6)
F [auth F1]	PSI_PsaF	e7fixF11	A: extended segments	X: Subunit III of photosystem I reaction centre, PsaF (From Topology)	H: Subunit III of photosystem I reaction centre, PsaF (From Topology)	T: Subunit III of photosystem I reaction centre, PsaF	F: PSI_PsaF	ECOD (1.6)
FA [auth F3]	PSI_PsaF	e7fixF31	A: extended segments	X: Subunit III of photosystem I reaction centre, PsaF (From Topology)	H: Subunit III of photosystem I reaction centre, PsaF (From Topology)	T: Subunit III of photosystem I reaction centre, PsaF	F: PSI_PsaF	ECOD (1.6)
S [auth F2]	PSI_PsaF	e7fixF21	A: extended segments	X: Subunit III of photosystem I reaction centre, PsaF (From Topology)	H: Subunit III of photosystem I reaction centre, PsaF (From Topology)	T: Subunit III of photosystem I reaction centre, PsaF	F: PSI_PsaF	ECOD (1.6)
G [auth I1]	PSI_8	e7fixI11	A: extended segments	X: Subunit VIII of photosystem I reaction centre, PsaI (From Topology)	H: Subunit VIII of photosystem I reaction centre, PsaI (From Topology)	T: Subunit VIII of photosystem I reaction centre, PsaI	F: PSI_8	ECOD (1.6)
GA [auth I3]	PSI_8	e7fixI31	A: extended segments	X: Subunit VIII of photosystem I reaction centre, PsaI (From Topology)	H: Subunit VIII of photosystem I reaction centre, PsaI (From Topology)	T: Subunit VIII of photosystem I reaction centre, PsaI	F: PSI_8	ECOD (1.6)
T [auth I2]	PSI_8	e7fixI21	A: extended segments	X: Subunit VIII of photosystem I reaction centre, PsaI (From Topology)	H: Subunit VIII of photosystem I reaction centre, PsaI (From Topology)	T: Subunit VIII of photosystem I reaction centre, PsaI	F: PSI_8	ECOD (1.6)
H [auth J1]	PSI_PsaJ	e7fixJ11	A: extended segments	X: Subunit IX of photosystem I reaction centre, PsaJ (From Topology)	H: Subunit IX of photosystem I reaction centre, PsaJ (From Topology)	T: Subunit IX of photosystem I reaction centre, PsaJ	F: PSI_PsaJ	ECOD (1.6)
HA [auth J3]	PSI_PsaJ	e7fixJ31	A: extended segments	X: Subunit IX of photosystem I reaction centre, PsaJ (From Topology)	H: Subunit IX of photosystem I reaction centre, PsaJ (From Topology)	T: Subunit IX of photosystem I reaction centre, PsaJ	F: PSI_PsaJ	ECOD (1.6)
U [auth J2]	PSI_PsaJ	e7fixJ21	A: extended segments	X: Subunit IX of photosystem I reaction centre, PsaJ (From Topology)	H: Subunit IX of photosystem I reaction centre, PsaJ (From Topology)	T: Subunit IX of photosystem I reaction centre, PsaJ	F: PSI_PsaJ	ECOD (1.6)
I [auth K1]	PSI_PSAK	e7fixK11	A: alpha bundles	X: Photosystem I reaction center subunit X, PsaK (From Topology)	H: Photosystem I reaction center subunit X, PsaK (From Topology)	T: Photosystem I reaction center subunit X, PsaK	F: PSI_PSAK	ECOD (1.6)
IA [auth K3]	PSI_PSAK	e7fixK31	A: alpha bundles	X: Photosystem I reaction center subunit X, PsaK (From Topology)	H: Photosystem I reaction center subunit X, PsaK (From Topology)	T: Photosystem I reaction center subunit X, PsaK	F: PSI_PSAK	ECOD (1.6)
V [auth K2]	PSI_PSAK	e7fixK21	A: alpha bundles	X: Photosystem I reaction center subunit X, PsaK (From Topology)	H: Photosystem I reaction center subunit X, PsaK (From Topology)	T: Photosystem I reaction center subunit X, PsaK	F: PSI_PSAK	ECOD (1.6)

Protein Family Annotation Pfam Database Homepage

Chains	Accession	Name	Description	Comments	Source
A [auth A1], AA [auth A3], N [auth A2]	PF00223	Photosystem I psaA/psaB protein (PsaA_PsaB)	Photosystem I psaA/psaB protein	-	Family
J [auth L1], JA [auth L3], W [auth L2]	PF02605	Photosystem I reaction centre subunit XI (PsaL)	Photosystem I reaction centre subunit XI	-	Family
K [auth M1], KA [auth M3], X [auth M2]	PF07465	Photosystem I protein M (PsaM) (PsaM)	Photosystem I protein M (PsaM)	-	Family
L [auth R1], LA [auth R3], Y [auth R2]	PF00111	2Fe-2S iron-sulfur cluster binding domain (Fer2)	2Fe-2S iron-sulfur cluster binding domain	-	Domain
B [auth B1], BA [auth B3], O [auth B2]	PF00223	Photosystem I psaA/psaB protein (PsaA_PsaB)	Photosystem I psaA/psaB protein	-	Family
C [auth C1], CA [auth C3], P [auth C2]	PF12838	4Fe-4S dicluster domain (Fer4_7)	4Fe-4S dicluster domain	Superfamily includes proteins containing domains which bind to iron-sulfur clusters. Members include bacterial ferredoxins, various dehydrogenases, and various reductases. Structure of the domain is an alpha-antiparallel beta sandwich. Domain contai ...	Superfamily includes proteins containing domains which bind to iron-sulfur clusters. Members include bacterial ferredoxins, various dehydrogenases, and various reductases. Structure of the domain is an alpha-antiparallel beta sandwich. Domain contains two 4Fe4S clusters.	Domain
D [auth D1], DA [auth D3], Q [auth D2]	PF02531	PsaD (PsaD)	PsaD	-	Family
E [auth E1], EA [auth E3], R [auth E2]	PF02427	Photosystem I reaction centre subunit IV / PsaE (PSI_PsaE)	Photosystem I reaction centre subunit IV / PsaE	PsaE is a 69 amino acid polypeptide from photosystem I present on the stromal side of the thylakoid membrane [1]. The structure is comprised of a well-defined five-stranded beta-sheet similar to SH3 domains [1].	Domain
F [auth F1], FA [auth F3], S [auth F2]	PF02507	Photosystem I reaction centre subunit III (PSI_PsaF)	Photosystem I reaction centre subunit III	-	Family
G [auth I1], GA [auth I3], T [auth I2]	PF00796	Photosystem I reaction centre subunit VIII (PSI_8)	Photosystem I reaction centre subunit VIII	-	Family
H [auth J1], HA [auth J3], U [auth J2]	PF01701	Photosystem I reaction centre subunit IX / PsaJ (PSI_PsaJ)	Photosystem I reaction centre subunit IX / PsaJ	-	Family
I [auth K1], IA [auth K3], V [auth K2]	PF01241	Photosystem I psaG / psaK (PSI_PSAK)	Photosystem I psaG / psaK	-	Family

Gene Ontology: Gene Product Annotation Gene Ontology Database Homepage

Chains	Polymer	Molecular Function	Biological Process	Cellular Component
A [auth A1], AA [auth A3], N [auth A2]	Photosystem I P700 chlorophyll a apoprotein A1	cation binding magnesium ion binding ion binding binding metal ion binding small molecule binding oxidoreductase activity catalytic activity iron-sulfur cluster binding 4 iron, 4 sulfur cluster binding metal cluster binding chlorophyll binding organic cyclic compound binding tetrapyrrole binding cation binding magnesium ion binding ion binding binding metal ion binding small molecule binding oxidoreductase activity catalytic activity iron-sulfur cluster binding 4 iron, 4 sulfur cluster binding metal cluster binding chlorophyll binding organic cyclic compound binding tetrapyrrole binding electron transfer activity	photosynthesis metabolic process cellular 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 photosystem I membrane protein complex
J [auth L1], JA [auth L3], W [auth L2]	Photosystem I reaction center subunit XI	-	photosynthesis metabolic process cellular 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 photosystem I membrane protein complex photosystem I reaction center
K [auth M1], KA [auth M3], X [auth M2]	Photosystem I reaction center subunit XII	-	photosynthesis metabolic process cellular 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 photosystem I membrane protein complex
L [auth R1], LA [auth R3], Y [auth R2]	Ferredoxin-1	iron-sulfur cluster binding 2 iron, 2 sulfur cluster binding binding metal cluster binding small molecule binding electron transfer activity cation binding ion binding metal ion binding	electron transport chain metabolic process cellular process generation of precursor metabolites and energy	-
M [auth X1], MA [auth X3], Z [auth X2]	Photosystem I 4.8K protein	-	-	cellular anatomical structure membrane
B [auth B1], BA [auth B3], O [auth B2]	Photosystem I P700 chlorophyll a apoprotein A2	cation binding magnesium ion binding ion binding binding metal ion binding small molecule binding oxidoreductase activity catalytic activity iron-sulfur cluster binding 4 iron, 4 sulfur cluster binding metal cluster binding chlorophyll binding organic cyclic compound binding tetrapyrrole binding cation binding magnesium ion binding ion binding binding metal ion binding small molecule binding oxidoreductase activity catalytic activity iron-sulfur cluster binding 4 iron, 4 sulfur cluster binding metal cluster binding chlorophyll binding organic cyclic compound binding tetrapyrrole binding electron transfer activity	photosynthesis metabolic process cellular 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 photosystem I membrane protein complex
C [auth C1], CA [auth C3], P [auth C2]	Photosystem I iron-sulfur center	oxidoreductase activity catalytic activity iron-sulfur cluster binding binding 4 iron, 4 sulfur cluster binding metal cluster binding small molecule binding electron transfer activity cation binding ion binding metal ion binding	photosynthesis photosynthesis, light reaction photosynthetic electron transport chain electron transport chain metabolic process cellular process generation of precursor metabolites and energy photosynthetic electron transport in photosystem I	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 photosystem I membrane protein complex
D [auth D1], DA [auth D3], Q [auth D2]	Photosystem I reaction center subunit II	-	photosynthesis metabolic process cellular process	protein-containing complex photosystem intracellular anatomical structure photosystem I membrane membrane protein complex intracellular membraneless organelle intracellular organelle cellular anatomical structure organelle membraneless organelle photosynthetic membrane photosystem I reaction center thylakoid
E [auth E1], EA [auth E3], R [auth E2]	Photosystem I reaction center subunit IV	-	photosynthesis metabolic process cellular 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 photosystem I membrane protein complex photosystem I reaction center
F [auth F1], FA [auth F3], S [auth F2]	Photosystem I reaction center subunit III	-	photosynthesis metabolic process cellular process	protein-containing complex photosystem intracellular anatomical structure photosystem I membrane membrane protein complex intracellular membraneless organelle intracellular organelle cellular anatomical structure organelle membraneless organelle photosynthetic membrane photosystem I reaction center thylakoid
G [auth I1], GA [auth I3], T [auth I2]	Photosystem I reaction center subunit VIII	-	photosynthesis metabolic process cellular 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 photosystem I membrane protein complex
H [auth J1], HA [auth J3], U [auth J2]	Photosystem I reaction center subunit IX	-	photosynthesis metabolic process cellular 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 photosystem I membrane protein complex
I [auth K1], IA [auth K3], V [auth K2]	Photosystem I reaction center subunit PsaK	-	photosynthesis metabolic process cellular 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 photosystem I membrane protein complex

InterPro: Protein Family Classification InterPro Database Homepage

Chains	Accession	Name	Type
A [auth A1], AA [auth A3], N [auth A2]	IPR006243	Photosystem I PsaA	Family
A [auth A1], AA [auth A3], N [auth A2]	IPR036408	Photosystem I PsaA/PsaB superfamily	Homologous Superfamily
A [auth A1], AA [auth A3], N [auth A2]	IPR001280	Photosystem I PsaA/PsaB	Family
A [auth A1], AA [auth A3], N [auth A2]	IPR020586	Photosystem I PsaA/PsaB, conserved site	Conserved Site
J [auth L1], JA [auth L3], W [auth L2]	IPR003757	Photosystem I PsaL, reaction centre subunit XI	Domain
J [auth L1], JA [auth L3], W [auth L2]	IPR022980	Photosystem I, reaction centre subunit XI	Family
J [auth L1], JA [auth L3], W [auth L2]	IPR036592	Photosystem I PsaL, reaction centre subunit XI superfamily	Homologous Superfamily
K [auth M1], KA [auth M3], X [auth M2]	IPR010010	Photosystem I PsaM, reaction centre	Family
K [auth M1], KA [auth M3], X [auth M2]	IPR037279	Photosystem I PsaM, reaction centre superfamily	Homologous Superfamily
L [auth R1], LA [auth R3], Y [auth R2]	IPR036010	2Fe-2S ferredoxin-like superfamily	Homologous Superfamily
L [auth R1], LA [auth R3], Y [auth R2]	IPR010241	Ferredoxin [2Fe-2S], plant	Family
L [auth R1], LA [auth R3], Y [auth R2]	IPR001041	2Fe-2S ferredoxin-type iron-sulfur binding domain	Domain
L [auth R1], LA [auth R3], Y [auth R2]	IPR012675	Beta-grasp domain superfamily	Homologous Superfamily
L [auth R1], LA [auth R3], Y [auth R2]	IPR006058	2Fe-2S ferredoxin, iron-sulphur binding site	Binding Site
M [auth X1], MA [auth X3], Z [auth X2]	IPR036243	Photosystem I PsaX superfamily	Homologous Superfamily
M [auth X1], MA [auth X3], Z [auth X2]	IPR012986	Photosystem I PsaX	Family
B [auth B1], BA [auth B3], O [auth B2]	IPR036408	Photosystem I PsaA/PsaB superfamily	Homologous Superfamily
B [auth B1], BA [auth B3], O [auth B2]	IPR001280	Photosystem I PsaA/PsaB	Family
B [auth B1], BA [auth B3], O [auth B2]	IPR006244	Photosystem I PsaB	Family
B [auth B1], BA [auth B3], O [auth B2]	IPR020586	Photosystem I PsaA/PsaB, conserved site	Conserved Site
C [auth C1], CA [auth C3], P [auth C2]	IPR017900	4Fe-4S ferredoxin, iron-sulphur binding, conserved site	Conserved Site
C [auth C1], CA [auth C3], P [auth C2]	IPR050157	Photosystem I iron-sulfur center	Family
C [auth C1], CA [auth C3], P [auth C2]	IPR017896	4Fe-4S ferredoxin-type, iron-sulphur binding domain	Domain
C [auth C1], CA [auth C3], P [auth C2]	IPR017491	Photosystem I protein PsaC	Family
D [auth D1], DA [auth D3], Q [auth D2]	IPR003685	Photosystem I PsaD	Family
D [auth D1], DA [auth D3], Q [auth D2]	IPR036579	Photosystem I, reaction centre subunit PsaD superfamily	Homologous Superfamily
E [auth E1], EA [auth E3], R [auth E2]	IPR008990	Electron transport accessory-like domain superfamily	Homologous Superfamily
E [auth E1], EA [auth E3], R [auth E2]	IPR003375	Photosystem I PsaE, reaction centre subunit IV	Family
F [auth F1], FA [auth F3], S [auth F2]	IPR036577	Photosystem I PsaF, reaction centre subunit III superfamily	Homologous Superfamily
F [auth F1], FA [auth F3], S [auth F2]	IPR003666	Photosystem I PsaF, reaction centre subunit III	Family
G [auth I1], GA [auth I3], T [auth I2]	IPR036357	Photosystem I reaction centre subunit VIII superfamily	Homologous Superfamily
G [auth I1], GA [auth I3], T [auth I2]	IPR001302	Photosystem I reaction centre subunit VIII	Family
H [auth J1], HA [auth J3], U [auth J2]	IPR002615	Photosystem I PsaJ, reaction centre subunit IX	Family
H [auth J1], HA [auth J3], U [auth J2]	IPR036062	Photosystem I PsaJ, reaction centre subunit IX superfamily	Homologous Superfamily
I [auth K1], IA [auth K3], V [auth K2]	IPR037101	Photosystem I reaction centre subunit PsaK	Homologous Superfamily
I [auth K1], IA [auth K3], V [auth K2]	IPR000549	Photosystem I reaction center subunit V/PsaK	Family
I [auth K1], IA [auth K3], V [auth K2]	IPR035982	Photosystem I reaction centre subunit PsaK superfamily	Homologous Superfamily
I [auth K1], IA [auth K3], V [auth K2]	IPR017492	Photosystem I reaction center subunit PsaK	Family

Membrane Protein Annotation: OPM OPM Database Homepage

Chains	External Link	Type	Class	Superfamily	Family
A [auth A1], AA [auth A3], B [auth B1], BA [auth B3], C [auth C1] A [auth A1], AA [auth A3], B [auth B1], BA [auth B3], C [auth C1], CA [auth C3], E [auth E1], EA [auth E3], F [auth F1], FA [auth F3], G [auth I1], GA [auth I3], H [auth J1], HA [auth J3], I [auth K1], IA [auth K3], J [auth L1], JA [auth L3], K [auth M1], KA [auth M3], M [auth X1], MA [auth X3], N [auth A2], O [auth B2], P [auth C2], R [auth E2], S [auth F2], T [auth I2], U [auth J2], V [auth K2], W [auth L2], X [auth M2], Z [auth X2]	OPM	Transmembrane	Alpha-helical polytopic	Photosystems	Photosystem I

Membrane Protein Annotation: mpstruc mpstruc Database Homepage

Chains	Resource Link	Group	Subgroup	Protein
A [auth A1], AA [auth A3], B [auth B1], BA [auth B3], C [auth C1] A [auth A1], AA [auth A3], B [auth B1], BA [auth B3], C [auth C1], CA [auth C3], E [auth E1], EA [auth E3], F [auth F1], FA [auth F3], G [auth I1], GA [auth I3], H [auth J1], HA [auth J3], I [auth K1], IA [auth K3], J [auth L1], JA [auth L3], K [auth M1], KA [auth M3], M [auth X1], MA [auth X3], N [auth A2], O [auth B2], P [auth C2], R [auth E2], S [auth F2], T [auth I2], U [auth J2], V [auth K2], W [auth L2], X [auth M2], Z [auth X2]	mpstruc	TRANSMEMBRANE PROTEINS: ALPHA-HELICAL	Photosystems	Photosystem I in the presence of ferredoxin and cytochrome c6