5OY0

Structure of synechocystis photosystem I trimer at 2.5A resolution

External Resource: Annotation

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

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

Chains	Domain Info	Class	Fold	Superfamily	Family	Domain	Species	Provenance Source (Version)
A	d5oy0a_	Membrane and cell surface proteins and peptides	Photosystem I subunits PsaA/PsaB	Photosystem I subunits PsaA/PsaB	Photosystem I subunits PsaA/PsaB	automated matches	(Synechocystis sp. PCC 6803 ) [TaxId: 1148 ],	SCOPe (2.08)
Y [auth 3]	d5oy03_	Alpha and beta proteins (a+b)	Ferredoxin-like	4Fe-4S ferredoxins	7-Fe ferredoxin	automated matches	(Synechocystis sp. PCC 6803 ) [TaxId: 1148 ],	SCOPe (2.08)
J [auth L]	d5oy0l_	Membrane and cell surface proteins and peptides	Photosystem I reaction center subunit XI, PsaL	Photosystem I reaction center subunit XI, PsaL	Photosystem I reaction center subunit XI, PsaL	automated matches	(Synechocystis sp. PCC 6803 ) [TaxId: 1148 ],	SCOPe (2.08)
P [auth e]	d5oy0e_	All beta proteins	SH3-like barrel	Electron transport accessory proteins	Photosystem I accessory protein E (PsaE)	automated matches	(Synechocystis sp. PCC 6803 ) [TaxId: 1148 ],	SCOPe (2.08)
W [auth 1]	d5oy01_	Membrane and cell surface proteins and peptides	Photosystem I subunits PsaA/PsaB	Photosystem I subunits PsaA/PsaB	Photosystem I subunits PsaA/PsaB	automated matches	(Synechocystis sp. PCC 6803 ) [TaxId: 1148 ],	SCOPe (2.08)
M [auth b]	d5oy0b_	Membrane and cell surface proteins and peptides	Photosystem I subunits PsaA/PsaB	Photosystem I subunits PsaA/PsaB	Photosystem I subunits PsaA/PsaB	automated matches	(Synechocystis sp. PCC 6803 ) [TaxId: 1148 ],	SCOPe (2.08)
N [auth c]	d5oy0c_	Alpha and beta proteins (a+b)	Ferredoxin-like	4Fe-4S ferredoxins	7-Fe ferredoxin	automated matches	(Synechocystis sp. PCC 6803 ) [TaxId: 1148 ],	SCOPe (2.08)
T [auth k]	d5oy0k_	Membrane and cell surface proteins and peptides	Photosystem I reaction center subunit X, PsaK	Photosystem I reaction center subunit X, PsaK	automated matches	automated matches	(Synechocystis sp. PCC 6803 ) [TaxId: 1148 ],	SCOPe (2.08)
Z [auth 4]	d5oy04_	Alpha and beta proteins (a+b)	Photosystem I subunit PsaD	Photosystem I subunit PsaD	Photosystem I subunit PsaD	automated matches	(Synechocystis sp. PCC 6803 ) [TaxId: 1148 ],	SCOPe (2.08)
CA [auth h]	d5oy0h_	Membrane and cell surface proteins and peptides	Single transmembrane helix	Subunit VIII of photosystem I reaction centre, PsaI	Subunit VIII of photosystem I reaction centre, PsaI	automated matches	(Synechocystis sp. PCC 6803 ) [TaxId: 1148 ],	SCOPe (2.08)
EA [auth 8]	d5oy08_	Membrane and cell surface proteins and peptides	Photosystem I reaction center subunit X, PsaK	Photosystem I reaction center subunit X, PsaK	automated matches	automated matches	(Synechocystis sp. PCC 6803 ) [TaxId: 1148 ],	SCOPe (2.08)
X [auth 2]	d5oy02_	Membrane and cell surface proteins and peptides	Photosystem I subunits PsaA/PsaB	Photosystem I subunits PsaA/PsaB	Photosystem I subunits PsaA/PsaB	automated matches	(Synechocystis sp. PCC 6803 ) [TaxId: 1148 ],	SCOPe (2.08)
FA [auth 0]	d5oy00_	Membrane and cell surface proteins and peptides	Photosystem I reaction center subunit XI, PsaL	Photosystem I reaction center subunit XI, PsaL	Photosystem I reaction center subunit XI, PsaL	automated matches	(Synechocystis sp. PCC 6803 ) [TaxId: 1148 ],	SCOPe (2.08)
D	d5oy0d_	Alpha and beta proteins (a+b)	Photosystem I subunit PsaD	Photosystem I subunit PsaD	Photosystem I subunit PsaD	automated matches	(Synechocystis sp. PCC 6803 ) [TaxId: 1148 ],	SCOPe (2.08)
AA [auth 5]	d5oy05_	All beta proteins	SH3-like barrel	Electron transport accessory proteins	Photosystem I accessory protein E (PsaE)	automated matches	(Synechocystis sp. PCC 6803 ) [TaxId: 1148 ],	SCOPe (2.08)
BA [auth 6]	d5oy06_	Membrane and cell surface proteins and peptides	Single transmembrane helix	Subunit III of photosystem I reaction centre, PsaF	Subunit III of photosystem I reaction centre, PsaF	automated matches	(Synechocystis sp. PCC 6803 ) [TaxId: 1148 ],	SCOPe (2.08)
F	d5oy0f_	Membrane and cell surface proteins and peptides	Single transmembrane helix	Subunit III of photosystem I reaction centre, PsaF	Subunit III of photosystem I reaction centre, PsaF	automated matches	(Synechocystis sp. PCC 6803 ) [TaxId: 1148 ],	SCOPe (2.08)
G [auth I]	d5oy0i_	Membrane and cell surface proteins and peptides	Single transmembrane helix	Subunit VIII of photosystem I reaction centre, PsaI	Subunit VIII of photosystem I reaction centre, PsaI	automated matches	(Synechocystis sp. PCC 6803 ) [TaxId: 1148 ],	SCOPe (2.08)
DA [auth 7]	d5oy07_	Membrane and cell surface proteins and peptides	Single transmembrane helix	Subunit IX of photosystem I reaction centre, PsaJ	Subunit IX of photosystem I reaction centre, PsaJ	automated matches	(Synechocystis sp. PCC 6803 ) [TaxId: 1148 ],	SCOPe (2.08)
H [auth J]	d5oy0j_	Membrane and cell surface proteins and peptides	Single transmembrane helix	Subunit IX of photosystem I reaction centre, PsaJ	Subunit IX of photosystem I reaction centre, PsaJ	automated matches	(Synechocystis sp. PCC 6803 ) [TaxId: 1148 ],	SCOPe (2.08)

Domain Annotation: SCOP2 Classification SCOP2 Database Homepage

Chains	Type	Family Name	Domain Identifier	Family Identifier	Provenance Source (Version)
A	SCOP2B Superfamily	Photosystem I subunits PsaA/PsaB	8074454	3000850	SCOP2B (2022-06-29)
L [auth a]	SCOP2B Superfamily	Photosystem I subunits PsaA/PsaB	8074454	3000850	SCOP2B (2022-06-29)
J [auth L]	SCOP2B Superfamily	Photosystem I reaction center subunit XI PsaL	8087170	3000870	SCOP2B (2022-06-29)
U [auth l]	SCOP2B Superfamily	Photosystem I reaction center subunit XI PsaL	8087170	3000870	SCOP2B (2022-06-29)
GA [auth 9]	SCOP2B Superfamily	Subunit XII of photosystem I reaction centre PsaM	8074450	3000829	SCOP2B (2022-06-29)
K [auth M]	SCOP2B Superfamily	Subunit XII of photosystem I reaction centre PsaM	8074450	3000829	SCOP2B (2022-06-29)
V [auth m]	SCOP2B Superfamily	Subunit XII of photosystem I reaction centre PsaM	8074450	3000829	SCOP2B (2022-06-29)
P [auth e]	SCOP2B Superfamily	Electron transport accessory proteins	8044474	3000325	SCOP2B (2022-06-29)
W [auth 1]	SCOP2 Family	Photosystem I subunits PsaA/PsaB	8074453	4002118	SCOP2 (2022-06-29)
W [auth 1]	SCOP2 Superfamily	Photosystem I subunits PsaA/PsaB	8074454	3000850	SCOP2 (2022-06-29)
M [auth b]	SCOP2B Superfamily	Photosystem I subunits PsaA/PsaB	8074462	3000850	SCOP2B (2022-06-29)
Z [auth 4]	SCOP2B Superfamily	Photosystem I subunit PsaD	8074480	3000951	SCOP2B (2022-06-29)
CA [auth h]	SCOP2B Superfamily	Subunit VIII of photosystem I reaction centre PsaI	8074504	3000819	SCOP2B (2022-06-29)
B	SCOP2B Superfamily	Photosystem I subunits PsaA/PsaB	8074462	3000850	SCOP2B (2022-06-29)
X [auth 2]	SCOP2B Superfamily	Photosystem I subunits PsaA/PsaB	8074462	3000850	SCOP2B (2022-06-29)
FA [auth 0]	SCOP2 Family	Photosystem I reaction center subunit XI PsaL	8087169	4002135	SCOP2 (2022-06-29)
FA [auth 0]	SCOP2 Superfamily	Photosystem I reaction center subunit XI PsaL	8087170	3000870	SCOP2 (2022-06-29)
D	SCOP2B Superfamily	Photosystem I subunit PsaD	8074480	3000951	SCOP2B (2022-06-29)
O [auth d]	SCOP2B Superfamily	Photosystem I subunit PsaD	8074480	3000951	SCOP2B (2022-06-29)
AA [auth 5]	SCOP2B Superfamily	Electron transport accessory proteins	8044474	3000325	SCOP2B (2022-06-29)
E	SCOP2B Superfamily	Electron transport accessory proteins	8044474	3000325	SCOP2B (2022-06-29)
BA [auth 6]	SCOP2 Family	Subunit III of photosystem I reaction centre PsaF	8074437	4002091	SCOP2 (2022-06-29)
BA [auth 6]	SCOP2 Superfamily	Subunit III of photosystem I reaction centre PsaF	8074438	3000813	SCOP2 (2022-06-29)
F	SCOP2B Superfamily	Subunit III of photosystem I reaction centre PsaF	8074438	3000813	SCOP2B (2022-06-29)
Q [auth f]	SCOP2B Superfamily	Subunit III of photosystem I reaction centre PsaF	8074438	3000813	SCOP2B (2022-06-29)
G [auth I]	SCOP2B Superfamily	Subunit VIII of photosystem I reaction centre PsaI	8074504	3000819	SCOP2B (2022-06-29)
R [auth i]	SCOP2B Superfamily	Subunit VIII of photosystem I reaction centre PsaI	8074504	3000819	SCOP2B (2022-06-29)
DA [auth 7]	SCOP2B Superfamily	Subunit IX of photosystem I reaction centre PsaJ	8074512	3000824	SCOP2B (2022-06-29)
H [auth J]	SCOP2B Superfamily	Subunit IX of photosystem I reaction centre PsaJ	8074512	3000824	SCOP2B (2022-06-29)
S [auth j]	SCOP2B Superfamily	Subunit IX of photosystem I reaction centre PsaJ	8074512	3000824	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	PF00223	e5oy0A2	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: PF00223	ECOD (1.6)
A	PF00223	e5oy0A1	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: PF00223	ECOD (1.6)
L [auth a]	PF00223	e5oy0a1	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: PF00223	ECOD (1.6)
L [auth a]	PF00223	e5oy0a2	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: PF00223	ECOD (1.6)
C	PF00037	e5oy0C1	A: a+b two layers	X: 4Fe-4S ferredoxin (From Topology)	H: 4Fe-4S ferredoxin (From Topology)	T: 4Fe-4S ferredoxin	F: PF00037	ECOD (1.6)
Y [auth 3]	PF00037	e5oy031	A: a+b two layers	X: 4Fe-4S ferredoxin (From Topology)	H: 4Fe-4S ferredoxin (From Topology)	T: 4Fe-4S ferredoxin	F: PF00037	ECOD (1.6)
J [auth L]	PF02605	e5oy0L1	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: PF02605	ECOD (1.6)
U [auth l]	PF02605	e5oy0l1	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: PF02605	ECOD (1.6)
GA [auth 9]	PF07465	e5oy091	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: PF07465	ECOD (1.6)
K [auth M]	PF07465	e5oy0M1	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: PF07465	ECOD (1.6)
V [auth m]	PF07465	e5oy0m1	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: PF07465	ECOD (1.6)
P [auth e]	PF02427	e5oy0e1	A: beta barrels	X: SH3	H: SH3	T: SH3	F: PF02427	ECOD (1.6)
W [auth 1]	PF00223	e5oy011	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: PF00223	ECOD (1.6)
W [auth 1]	PF00223	e5oy012	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: PF00223	ECOD (1.6)
M [auth b]	PF00223	e5oy0b1	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: PF00223	ECOD (1.6)
M [auth b]	PF00223	e5oy0b2	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: PF00223	ECOD (1.6)
N [auth c]	PF00037	e5oy0c1	A: a+b two layers	X: 4Fe-4S ferredoxin (From Topology)	H: 4Fe-4S ferredoxin (From Topology)	T: 4Fe-4S ferredoxin	F: PF00037	ECOD (1.6)
T [auth k]	PF01241	e5oy0k1	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: PF01241	ECOD (1.6)
Z [auth 4]	PF02531	e5oy041	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: PF02531	ECOD (1.6)
CA [auth h]	PF00796	e5oy0h1	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: PF00796	ECOD (1.6)
EA [auth 8]	PF01241	e5oy081	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: PF01241	ECOD (1.6)
B	PF00223	e5oy0B2	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: PF00223	ECOD (1.6)
B	PF00223	e5oy0B1	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: PF00223	ECOD (1.6)
X [auth 2]	PF00223	e5oy022	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: PF00223	ECOD (1.6)
X [auth 2]	PF00223	e5oy021	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: PF00223	ECOD (1.6)
FA [auth 0]	PF02605	e5oy001	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: PF02605	ECOD (1.6)
D	PF02531	e5oy0D1	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: PF02531	ECOD (1.6)
O [auth d]	PF02531	e5oy0d1	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: PF02531	ECOD (1.6)
AA [auth 5]	PF02427	e5oy051	A: beta barrels	X: SH3	H: SH3	T: SH3	F: PF02427	ECOD (1.6)
E	PF02427	e5oy0E1	A: beta barrels	X: SH3	H: SH3	T: SH3	F: PF02427	ECOD (1.6)
BA [auth 6]	PF02507	e5oy061	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: PF02507	ECOD (1.6)
F	PF02507	e5oy0F1	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: PF02507	ECOD (1.6)
Q [auth f]	PF02507	e5oy0f1	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: PF02507	ECOD (1.6)
G [auth I]	PF00796	e5oy0I1	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: PF00796	ECOD (1.6)
R [auth i]	PF00796	e5oy0i1	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: PF00796	ECOD (1.6)
DA [auth 7]	PF01701	e5oy071	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: PF01701	ECOD (1.6)
H [auth J]	PF01701	e5oy0J1	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: PF01701	ECOD (1.6)
S [auth j]	PF01701	e5oy0j1	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: PF01701	ECOD (1.6)
I [auth K]	PF01241	e5oy0K1	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: PF01241	ECOD (1.6)

Domain Annotation: CATH CATH Database Homepage

Chain	Domain	Class	Architecture	Topology	Homology	Provenance Source (Version)
A	1.20.1130.10	Mainly Alpha	Up-down Bundle	Photosystem I p700 chlorophyll A apoprotein A1	Photosystem I PsaA/PsaB	CATH (utative)
L [auth a]	1.20.1130.10	Mainly Alpha	Up-down Bundle	Photosystem I p700 chlorophyll A apoprotein A1	Photosystem I PsaA/PsaB	CATH (utative)
C	3.30.70.20	Alpha Beta	2-Layer Sandwich	Alpha-Beta Plaits		CATH (4.3.0)
Y [auth 3]	3.30.70.20	Alpha Beta	2-Layer Sandwich	Alpha-Beta Plaits		CATH (4.3.0)
J [auth L]	1.20.1240.10	Mainly Alpha	Up-down Bundle	Photosystem 1 Reaction Centre Subunit Xi	Chain: L	CATH (4.3.0)
U [auth l]	1.20.1240.10	Mainly Alpha	Up-down Bundle	Photosystem 1 Reaction Centre Subunit Xi	Chain: L	CATH (4.3.0)
P [auth e]	2.30.30.50	Mainly Beta	Roll	SH3 type barrels.		CATH (4.3.0)
W [auth 1]	1.20.1130.10	Mainly Alpha	Up-down Bundle	Photosystem I p700 chlorophyll A apoprotein A1	Photosystem I PsaA/PsaB	CATH (utative)
M [auth b]	1.20.1130.10	Mainly Alpha	Up-down Bundle	Photosystem I p700 chlorophyll A apoprotein A1	Photosystem I PsaA/PsaB	CATH (utative)
N [auth c]	3.30.70.20	Alpha Beta	2-Layer Sandwich	Alpha-Beta Plaits		CATH (4.3.0)
Z [auth 4]	3.30.1470.10	Alpha Beta	2-Layer Sandwich	Photosystem 1 Reaction Centre Subunit Ii	Chain: D	CATH (4.3.0)
B	1.20.1130.10	Mainly Alpha	Up-down Bundle	Photosystem I p700 chlorophyll A apoprotein A1	Photosystem I PsaA/PsaB	CATH (utative)
X [auth 2]	1.20.1130.10	Mainly Alpha	Up-down Bundle	Photosystem I p700 chlorophyll A apoprotein A1	Photosystem I PsaA/PsaB	CATH (utative)
FA [auth 0]	1.20.1240.10	Mainly Alpha	Up-down Bundle	Photosystem 1 Reaction Centre Subunit Xi	Chain: L	CATH (4.3.0)
D	3.30.1470.10	Alpha Beta	2-Layer Sandwich	Photosystem 1 Reaction Centre Subunit Ii	Chain: D	CATH (4.3.0)
O [auth d]	3.30.1470.10	Alpha Beta	2-Layer Sandwich	Photosystem 1 Reaction Centre Subunit Ii	Chain: D	CATH (4.3.0)
AA [auth 5]	2.30.30.50	Mainly Beta	Roll	SH3 type barrels.		CATH (4.3.0)
E	2.30.30.50	Mainly Beta	Roll	SH3 type barrels.		CATH (4.3.0)
BA [auth 6]	1.10.8.110	Mainly Alpha	Orthogonal Bundle	Helicase, Ruva Protein	domain 3	CATH (4.3.0)
F	1.10.8.110	Mainly Alpha	Orthogonal Bundle	Helicase, Ruva Protein	domain 3	CATH (4.3.0)
Q [auth f]	1.10.8.110	Mainly Alpha	Orthogonal Bundle	Helicase, Ruva Protein	domain 3	CATH (4.3.0)
DA [auth 7]	1.20.5.510	Mainly Alpha	Up-down Bundle	Single alpha-helices involved in coiled-coils or other helix-helix interfaces	Single helix bin	CATH (4.3.0)
H [auth J]	1.20.5.510	Mainly Alpha	Up-down Bundle	Single alpha-helices involved in coiled-coils or other helix-helix interfaces	Single helix bin	CATH (4.3.0)
S [auth j]	1.20.5.510	Mainly Alpha	Up-down Bundle	Single alpha-helices involved in coiled-coils or other helix-helix interfaces	Single helix bin	CATH (4.3.0)

Protein Family Annotation Pfam Database Homepage

Chains	Accession	Name	Description	Comments	Source
A, L [auth a]	PF00223	Photosystem I psaA/psaB protein (PsaA_PsaB)	Photosystem I psaA/psaB protein	-	Family
C, Y [auth 3]	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
J [auth L], U [auth l]	PF02605	Photosystem I reaction centre subunit XI (PsaL)	Photosystem I reaction centre subunit XI	-	Family
GA [auth 9], K [auth M], V [auth m]	PF07465	Photosystem I protein M (PsaM) (PsaM)	Photosystem I protein M (PsaM)	-	Family
P [auth e]	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
W [auth 1]	PF00223	Photosystem I psaA/psaB protein (PsaA_PsaB)	Photosystem I psaA/psaB protein	-	Family
M [auth b]	PF00223	Photosystem I psaA/psaB protein (PsaA_PsaB)	Photosystem I psaA/psaB protein	-	Family
N [auth c]	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
T [auth k]	PF01241	Photosystem I psaG / psaK (PSI_PSAK)	Photosystem I psaG / psaK	-	Family
Z [auth 4]	PF02531	PsaD (PsaD)	PsaD	-	Family
CA [auth h]	PF00796	Photosystem I reaction centre subunit VIII (PSI_8)	Photosystem I reaction centre subunit VIII	-	Family
EA [auth 8]	PF01241	Photosystem I psaG / psaK (PSI_PSAK)	Photosystem I psaG / psaK	-	Family
B, X [auth 2]	PF00223	Photosystem I psaA/psaB protein (PsaA_PsaB)	Photosystem I psaA/psaB protein	-	Family
FA [auth 0]	PF02605	Photosystem I reaction centre subunit XI (PsaL)	Photosystem I reaction centre subunit XI	-	Family
D, O [auth d]	PF02531	PsaD (PsaD)	PsaD	-	Family
AA [auth 5], E	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
BA [auth 6], F, Q [auth f]	PF02507	Photosystem I reaction centre subunit III (PSI_PsaF)	Photosystem I reaction centre subunit III	-	Family
G [auth I], R [auth i]	PF00796	Photosystem I reaction centre subunit VIII (PSI_8)	Photosystem I reaction centre subunit VIII	-	Family
DA [auth 7], H [auth J], S [auth j]	PF01701	Photosystem I reaction centre subunit IX / PsaJ (PSI_PsaJ)	Photosystem I reaction centre subunit IX / PsaJ	-	Family
I [auth K]	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, L [auth a]	Photosystem I P700 chlorophyll a apoprotein A1	cation binding magnesium ion binding ion binding binding metal ion binding small molecule binding 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 cellular metabolic process metabolic process cellular process	intracellular anatomical structure plasma membrane-derived chromatophore membrane membrane plasma membrane plasma membrane-derived chromatophore cellular anatomical entity thylakoid membrane intracellular organelle cell periphery plasma membrane-derived thylakoid membrane organelle intracellular non-membrane-bounded organelle plasma membrane region bacterial thylakoid intracellular anatomical structure plasma membrane-derived chromatophore membrane membrane plasma membrane plasma membrane-derived chromatophore cellular anatomical entity thylakoid membrane intracellular organelle cell periphery plasma membrane-derived thylakoid membrane organelle intracellular non-membrane-bounded organelle plasma membrane region bacterial thylakoid cytoplasm photosynthetic membrane thylakoid non-membrane-bounded organelle protein-containing complex plasma membrane-derived photosystem I photosystem plasma membrane protein complex photosystem I membrane protein complex
C, Y [auth 3]	Photosystem I iron-sulfur center	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 cellular metabolic process 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 plasma membrane-derived chromatophore cellular anatomical entity thylakoid membrane intracellular organelle cell periphery plasma membrane-derived thylakoid membrane organelle intracellular non-membrane-bounded organelle plasma membrane region bacterial thylakoid intracellular anatomical structure plasma membrane-derived chromatophore membrane membrane plasma membrane plasma membrane-derived chromatophore cellular anatomical entity thylakoid membrane intracellular organelle cell periphery plasma membrane-derived thylakoid membrane organelle intracellular non-membrane-bounded organelle plasma membrane region bacterial thylakoid cytoplasm photosynthetic membrane thylakoid non-membrane-bounded organelle protein-containing complex photosystem photosystem I membrane protein complex
J [auth L], U [auth l]	Photosystem I reaction center subunit XI	-	photosynthesis cellular metabolic process metabolic process cellular process	intracellular anatomical structure plasma membrane-derived chromatophore membrane membrane plasma membrane plasma membrane-derived chromatophore cellular anatomical entity thylakoid membrane intracellular organelle cell periphery plasma membrane-derived thylakoid membrane organelle intracellular non-membrane-bounded organelle plasma membrane region bacterial thylakoid intracellular anatomical structure plasma membrane-derived chromatophore membrane membrane plasma membrane plasma membrane-derived chromatophore cellular anatomical entity thylakoid membrane intracellular organelle cell periphery plasma membrane-derived thylakoid membrane organelle intracellular non-membrane-bounded organelle plasma membrane region bacterial thylakoid cytoplasm photosynthetic membrane thylakoid non-membrane-bounded organelle protein-containing complex photosystem photosystem I membrane protein complex photosystem I reaction center plasma membrane-derived photosystem I plasma membrane protein complex
GA [auth 9], K [auth M], V [auth m]	Photosystem I reaction center subunit XII	-	photosynthesis cellular metabolic process metabolic process cellular process	intracellular anatomical structure plasma membrane-derived chromatophore membrane membrane plasma membrane plasma membrane-derived chromatophore cellular anatomical entity thylakoid membrane intracellular organelle cell periphery plasma membrane-derived thylakoid membrane organelle intracellular non-membrane-bounded organelle plasma membrane region bacterial thylakoid intracellular anatomical structure plasma membrane-derived chromatophore membrane membrane plasma membrane plasma membrane-derived chromatophore cellular anatomical entity thylakoid membrane intracellular organelle cell periphery plasma membrane-derived thylakoid membrane organelle intracellular non-membrane-bounded organelle plasma membrane region bacterial thylakoid cytoplasm photosynthetic membrane thylakoid non-membrane-bounded organelle protein-containing complex photosystem photosystem I membrane protein complex
P [auth e]	Photosystem I reaction center subunit IV	-	photosynthesis cellular metabolic process metabolic process cellular process	intracellular anatomical structure plasma membrane-derived chromatophore membrane membrane plasma membrane plasma membrane-derived chromatophore cellular anatomical entity thylakoid membrane intracellular organelle cell periphery plasma membrane-derived thylakoid membrane organelle intracellular non-membrane-bounded organelle plasma membrane region bacterial thylakoid intracellular anatomical structure plasma membrane-derived chromatophore membrane membrane plasma membrane plasma membrane-derived chromatophore cellular anatomical entity thylakoid membrane intracellular organelle cell periphery plasma membrane-derived thylakoid membrane organelle intracellular non-membrane-bounded organelle plasma membrane region bacterial thylakoid cytoplasm photosynthetic membrane thylakoid non-membrane-bounded organelle protein-containing complex photosystem photosystem I membrane protein complex photosystem I reaction center
W [auth 1]	Photosystem I P700 chlorophyll a apoprotein A1	cation binding magnesium ion binding ion binding binding metal ion binding small molecule binding 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 cellular metabolic process metabolic process cellular process	intracellular anatomical structure plasma membrane-derived chromatophore membrane membrane plasma membrane plasma membrane-derived chromatophore cellular anatomical entity thylakoid membrane intracellular organelle cell periphery plasma membrane-derived thylakoid membrane organelle intracellular non-membrane-bounded organelle plasma membrane region bacterial thylakoid intracellular anatomical structure plasma membrane-derived chromatophore membrane membrane plasma membrane plasma membrane-derived chromatophore cellular anatomical entity thylakoid membrane intracellular organelle cell periphery plasma membrane-derived thylakoid membrane organelle intracellular non-membrane-bounded organelle plasma membrane region bacterial thylakoid cytoplasm photosynthetic membrane thylakoid non-membrane-bounded organelle protein-containing complex plasma membrane-derived photosystem I photosystem plasma membrane protein complex photosystem I membrane protein complex
M [auth b]	Photosystem I P700 chlorophyll a apoprotein A2	cation binding magnesium ion binding ion binding binding metal ion binding small molecule binding 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 cellular metabolic process metabolic process cellular process	intracellular anatomical structure plasma membrane-derived chromatophore membrane membrane plasma membrane plasma membrane-derived chromatophore cellular anatomical entity thylakoid membrane intracellular organelle cell periphery plasma membrane-derived thylakoid membrane organelle intracellular non-membrane-bounded organelle plasma membrane region bacterial thylakoid intracellular anatomical structure plasma membrane-derived chromatophore membrane membrane plasma membrane plasma membrane-derived chromatophore cellular anatomical entity thylakoid membrane intracellular organelle cell periphery plasma membrane-derived thylakoid membrane organelle intracellular non-membrane-bounded organelle plasma membrane region bacterial thylakoid cytoplasm photosynthetic membrane thylakoid non-membrane-bounded organelle protein-containing complex plasma membrane-derived photosystem I photosystem plasma membrane protein complex photosystem I membrane protein complex
N [auth c]	Photosystem I iron-sulfur center	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 cellular metabolic process 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 plasma membrane-derived chromatophore cellular anatomical entity thylakoid membrane intracellular organelle cell periphery plasma membrane-derived thylakoid membrane organelle intracellular non-membrane-bounded organelle plasma membrane region bacterial thylakoid intracellular anatomical structure plasma membrane-derived chromatophore membrane membrane plasma membrane plasma membrane-derived chromatophore cellular anatomical entity thylakoid membrane intracellular organelle cell periphery plasma membrane-derived thylakoid membrane organelle intracellular non-membrane-bounded organelle plasma membrane region bacterial thylakoid cytoplasm photosynthetic membrane thylakoid non-membrane-bounded organelle protein-containing complex photosystem photosystem I membrane protein complex
T [auth k]	Photosystem I reaction center subunit PsaK 2	-	photosynthesis cellular metabolic process metabolic process cellular process	intracellular anatomical structure plasma membrane-derived chromatophore membrane membrane plasma membrane plasma membrane-derived chromatophore cellular anatomical entity thylakoid membrane intracellular organelle cell periphery plasma membrane-derived thylakoid membrane organelle intracellular non-membrane-bounded organelle plasma membrane region bacterial thylakoid intracellular anatomical structure plasma membrane-derived chromatophore membrane membrane plasma membrane plasma membrane-derived chromatophore cellular anatomical entity thylakoid membrane intracellular organelle cell periphery plasma membrane-derived thylakoid membrane organelle intracellular non-membrane-bounded organelle plasma membrane region bacterial thylakoid cytoplasm photosynthetic membrane thylakoid non-membrane-bounded organelle protein-containing complex photosystem photosystem I membrane protein complex
Z [auth 4]	Photosystem I reaction center subunit II	-	photosynthesis cellular metabolic process metabolic process cellular process	protein-containing complex photosystem intracellular anatomical structure photosystem I membrane membrane protein complex cellular anatomical entity intracellular organelle organelle intracellular non-membrane-bounded organelle photosynthetic membrane photosystem I reaction center thylakoid non-membrane-bounded organelle protein-containing complex photosystem intracellular anatomical structure photosystem I membrane membrane protein complex cellular anatomical entity intracellular organelle organelle intracellular non-membrane-bounded organelle photosynthetic membrane photosystem I reaction center thylakoid non-membrane-bounded organelle plasma membrane-derived photosystem I plasma membrane protein complex plasma membrane cell periphery bacterial thylakoid cytoplasm
CA [auth h]	Photosystem I reaction center subunit VIII	-	photosynthesis cellular metabolic process metabolic process cellular process	intracellular anatomical structure plasma membrane-derived chromatophore membrane membrane plasma membrane plasma membrane-derived chromatophore cellular anatomical entity thylakoid membrane intracellular organelle cell periphery plasma membrane-derived thylakoid membrane organelle intracellular non-membrane-bounded organelle plasma membrane region bacterial thylakoid intracellular anatomical structure plasma membrane-derived chromatophore membrane membrane plasma membrane plasma membrane-derived chromatophore cellular anatomical entity thylakoid membrane intracellular organelle cell periphery plasma membrane-derived thylakoid membrane organelle intracellular non-membrane-bounded organelle plasma membrane region bacterial thylakoid cytoplasm photosynthetic membrane thylakoid non-membrane-bounded organelle protein-containing complex photosystem photosystem I membrane protein complex
EA [auth 8]	Photosystem I reaction center subunit PsaK 2	-	photosynthesis cellular metabolic process metabolic process cellular process	intracellular anatomical structure plasma membrane-derived chromatophore membrane membrane plasma membrane plasma membrane-derived chromatophore cellular anatomical entity thylakoid membrane intracellular organelle cell periphery plasma membrane-derived thylakoid membrane organelle intracellular non-membrane-bounded organelle plasma membrane region bacterial thylakoid intracellular anatomical structure plasma membrane-derived chromatophore membrane membrane plasma membrane plasma membrane-derived chromatophore cellular anatomical entity thylakoid membrane intracellular organelle cell periphery plasma membrane-derived thylakoid membrane organelle intracellular non-membrane-bounded organelle plasma membrane region bacterial thylakoid cytoplasm photosynthetic membrane thylakoid non-membrane-bounded organelle protein-containing complex photosystem photosystem I membrane protein complex
B, X [auth 2]	Photosystem I P700 chlorophyll a apoprotein A2	cation binding magnesium ion binding ion binding binding metal ion binding small molecule binding 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 cellular metabolic process metabolic process cellular process	intracellular anatomical structure plasma membrane-derived chromatophore membrane membrane plasma membrane plasma membrane-derived chromatophore cellular anatomical entity thylakoid membrane intracellular organelle cell periphery plasma membrane-derived thylakoid membrane organelle intracellular non-membrane-bounded organelle plasma membrane region bacterial thylakoid intracellular anatomical structure plasma membrane-derived chromatophore membrane membrane plasma membrane plasma membrane-derived chromatophore cellular anatomical entity thylakoid membrane intracellular organelle cell periphery plasma membrane-derived thylakoid membrane organelle intracellular non-membrane-bounded organelle plasma membrane region bacterial thylakoid cytoplasm photosynthetic membrane thylakoid non-membrane-bounded organelle protein-containing complex plasma membrane-derived photosystem I photosystem plasma membrane protein complex photosystem I membrane protein complex
FA [auth 0]	Photosystem I reaction center subunit XI	-	photosynthesis cellular metabolic process metabolic process cellular process	intracellular anatomical structure plasma membrane-derived chromatophore membrane membrane plasma membrane plasma membrane-derived chromatophore cellular anatomical entity thylakoid membrane intracellular organelle cell periphery plasma membrane-derived thylakoid membrane organelle intracellular non-membrane-bounded organelle plasma membrane region bacterial thylakoid intracellular anatomical structure plasma membrane-derived chromatophore membrane membrane plasma membrane plasma membrane-derived chromatophore cellular anatomical entity thylakoid membrane intracellular organelle cell periphery plasma membrane-derived thylakoid membrane organelle intracellular non-membrane-bounded organelle plasma membrane region bacterial thylakoid cytoplasm photosynthetic membrane thylakoid non-membrane-bounded organelle protein-containing complex photosystem photosystem I membrane protein complex photosystem I reaction center plasma membrane-derived photosystem I plasma membrane protein complex
D, O [auth d]	Photosystem I reaction center subunit II	-	photosynthesis cellular metabolic process metabolic process cellular process	protein-containing complex photosystem intracellular anatomical structure photosystem I membrane membrane protein complex cellular anatomical entity intracellular organelle organelle intracellular non-membrane-bounded organelle photosynthetic membrane photosystem I reaction center thylakoid non-membrane-bounded organelle protein-containing complex photosystem intracellular anatomical structure photosystem I membrane membrane protein complex cellular anatomical entity intracellular organelle organelle intracellular non-membrane-bounded organelle photosynthetic membrane photosystem I reaction center thylakoid non-membrane-bounded organelle plasma membrane-derived photosystem I plasma membrane protein complex plasma membrane cell periphery bacterial thylakoid cytoplasm
AA [auth 5], E	Photosystem I reaction center subunit IV	-	photosynthesis cellular metabolic process metabolic process cellular process	intracellular anatomical structure plasma membrane-derived chromatophore membrane membrane plasma membrane plasma membrane-derived chromatophore cellular anatomical entity thylakoid membrane intracellular organelle cell periphery plasma membrane-derived thylakoid membrane organelle intracellular non-membrane-bounded organelle plasma membrane region bacterial thylakoid intracellular anatomical structure plasma membrane-derived chromatophore membrane membrane plasma membrane plasma membrane-derived chromatophore cellular anatomical entity thylakoid membrane intracellular organelle cell periphery plasma membrane-derived thylakoid membrane organelle intracellular non-membrane-bounded organelle plasma membrane region bacterial thylakoid cytoplasm photosynthetic membrane thylakoid non-membrane-bounded organelle protein-containing complex photosystem photosystem I membrane protein complex photosystem I reaction center
BA [auth 6], F, Q [auth f]	Photosystem I reaction center subunit III	-	photosynthesis cellular metabolic process metabolic process cellular process	protein-containing complex photosystem intracellular anatomical structure photosystem I membrane membrane protein complex cellular anatomical entity intracellular organelle organelle intracellular non-membrane-bounded organelle photosynthetic membrane photosystem I reaction center thylakoid non-membrane-bounded organelle protein-containing complex photosystem intracellular anatomical structure photosystem I membrane membrane protein complex cellular anatomical entity intracellular organelle organelle intracellular non-membrane-bounded organelle photosynthetic membrane photosystem I reaction center thylakoid non-membrane-bounded organelle plasma membrane-derived photosystem I plasma membrane protein complex plasma membrane cell periphery bacterial thylakoid cytoplasm
G [auth I], R [auth i]	Photosystem I reaction center subunit VIII	-	photosynthesis cellular metabolic process metabolic process cellular process	intracellular anatomical structure plasma membrane-derived chromatophore membrane membrane plasma membrane plasma membrane-derived chromatophore cellular anatomical entity thylakoid membrane intracellular organelle cell periphery plasma membrane-derived thylakoid membrane organelle intracellular non-membrane-bounded organelle plasma membrane region bacterial thylakoid intracellular anatomical structure plasma membrane-derived chromatophore membrane membrane plasma membrane plasma membrane-derived chromatophore cellular anatomical entity thylakoid membrane intracellular organelle cell periphery plasma membrane-derived thylakoid membrane organelle intracellular non-membrane-bounded organelle plasma membrane region bacterial thylakoid cytoplasm photosynthetic membrane thylakoid non-membrane-bounded organelle protein-containing complex photosystem photosystem I membrane protein complex
DA [auth 7], H [auth J], S [auth j]	Photosystem I reaction center subunit IX	-	photosynthesis cellular metabolic process metabolic process cellular process	intracellular anatomical structure plasma membrane-derived chromatophore membrane membrane plasma membrane plasma membrane-derived chromatophore cellular anatomical entity thylakoid membrane intracellular organelle cell periphery plasma membrane-derived thylakoid membrane organelle intracellular non-membrane-bounded organelle plasma membrane region bacterial thylakoid intracellular anatomical structure plasma membrane-derived chromatophore membrane membrane plasma membrane plasma membrane-derived chromatophore cellular anatomical entity thylakoid membrane intracellular organelle cell periphery plasma membrane-derived thylakoid membrane organelle intracellular non-membrane-bounded organelle plasma membrane region bacterial thylakoid cytoplasm photosynthetic membrane thylakoid non-membrane-bounded organelle protein-containing complex photosystem photosystem I membrane protein complex
I [auth K]	Photosystem I reaction center subunit PsaK 2	-	photosynthesis cellular metabolic process metabolic process cellular process	intracellular anatomical structure plasma membrane-derived chromatophore membrane membrane plasma membrane plasma membrane-derived chromatophore cellular anatomical entity thylakoid membrane intracellular organelle cell periphery plasma membrane-derived thylakoid membrane organelle intracellular non-membrane-bounded organelle plasma membrane region bacterial thylakoid intracellular anatomical structure plasma membrane-derived chromatophore membrane membrane plasma membrane plasma membrane-derived chromatophore cellular anatomical entity thylakoid membrane intracellular organelle cell periphery plasma membrane-derived thylakoid membrane organelle intracellular non-membrane-bounded organelle plasma membrane region bacterial thylakoid cytoplasm photosynthetic membrane thylakoid non-membrane-bounded organelle protein-containing complex photosystem photosystem I membrane protein complex

InterPro: Protein Family Classification InterPro Database Homepage

Chains	Accession	Name	Type
A, L [auth a]	IPR006243	Photosystem I PsaA	Family
A, L [auth a]	IPR036408	Photosystem I PsaA/PsaB superfamily	Homologous Superfamily
A, L [auth a]	IPR001280	Photosystem I PsaA/PsaB	Family
A, L [auth a]	IPR020586	Photosystem I PsaA/PsaB, conserved site	Conserved Site
C, Y [auth 3]	IPR017900	4Fe-4S ferredoxin, iron-sulphur binding, conserved site	Conserved Site
C, Y [auth 3]	IPR017896	4Fe-4S ferredoxin-type, iron-sulphur binding domain	Domain
C, Y [auth 3]	IPR017491	Photosystem I protein PsaC	Family
J [auth L], U [auth l]	IPR003757	Photosystem I PsaL, reaction centre subunit XI	Domain
J [auth L], U [auth l]	IPR022980	Photosystem I, reaction centre subunit XI	Family
J [auth L], U [auth l]	IPR036592	Photosystem I PsaL, reaction centre subunit XI superfamily	Homologous Superfamily
GA [auth 9], K [auth M], V [auth m]	IPR010010	Photosystem I PsaM, reaction centre	Family
GA [auth 9], K [auth M], V [auth m]	IPR037279	Photosystem I PsaM, reaction centre superfamily	Homologous Superfamily
P [auth e]	IPR008990	Electron transport accessory-like domain superfamily	Homologous Superfamily
P [auth e]	IPR003375	Photosystem I PsaE, reaction centre subunit IV	Family
W [auth 1]	IPR006243	Photosystem I PsaA	Family
W [auth 1]	IPR036408	Photosystem I PsaA/PsaB superfamily	Homologous Superfamily
W [auth 1]	IPR001280	Photosystem I PsaA/PsaB	Family
W [auth 1]	IPR020586	Photosystem I PsaA/PsaB, conserved site	Conserved Site
M [auth b]	IPR036408	Photosystem I PsaA/PsaB superfamily	Homologous Superfamily
M [auth b]	IPR001280	Photosystem I PsaA/PsaB	Family
M [auth b]	IPR006244	Photosystem I PsaB	Family
M [auth b]	IPR020586	Photosystem I PsaA/PsaB, conserved site	Conserved Site
N [auth c]	IPR017900	4Fe-4S ferredoxin, iron-sulphur binding, conserved site	Conserved Site
N [auth c]	IPR017896	4Fe-4S ferredoxin-type, iron-sulphur binding domain	Domain
N [auth c]	IPR017491	Photosystem I protein PsaC	Family
T [auth k]	IPR037101	Photosystem I reaction centre subunit PsaK	Homologous Superfamily
T [auth k]	IPR000549	Photosystem I reaction center subunit V/PsaK	Family
T [auth k]	IPR035982	Photosystem I reaction centre subunit PsaK superfamily	Homologous Superfamily
T [auth k]	IPR017492	Photosystem I reaction center subunit PsaK	Family
Z [auth 4]	IPR003685	Photosystem I PsaD	Family
Z [auth 4]	IPR036579	Photosystem I, reaction centre subunit PsaD superfamily	Homologous Superfamily
CA [auth h]	IPR036357	Photosystem I reaction centre subunit VIII superfamily	Homologous Superfamily
CA [auth h]	IPR001302	Photosystem I reaction centre subunit VIII	Family
EA [auth 8]	IPR037101	Photosystem I reaction centre subunit PsaK	Homologous Superfamily
EA [auth 8]	IPR000549	Photosystem I reaction center subunit V/PsaK	Family
EA [auth 8]	IPR035982	Photosystem I reaction centre subunit PsaK superfamily	Homologous Superfamily
EA [auth 8]	IPR017492	Photosystem I reaction center subunit PsaK	Family
B, X [auth 2]	IPR036408	Photosystem I PsaA/PsaB superfamily	Homologous Superfamily
B, X [auth 2]	IPR001280	Photosystem I PsaA/PsaB	Family
B, X [auth 2]	IPR006244	Photosystem I PsaB	Family
B, X [auth 2]	IPR020586	Photosystem I PsaA/PsaB, conserved site	Conserved Site
FA [auth 0]	IPR003757	Photosystem I PsaL, reaction centre subunit XI	Domain
FA [auth 0]	IPR022980	Photosystem I, reaction centre subunit XI	Family
FA [auth 0]	IPR036592	Photosystem I PsaL, reaction centre subunit XI superfamily	Homologous Superfamily
D, O [auth d]	IPR003685	Photosystem I PsaD	Family
D, O [auth d]	IPR036579	Photosystem I, reaction centre subunit PsaD superfamily	Homologous Superfamily
AA [auth 5], E	IPR008990	Electron transport accessory-like domain superfamily	Homologous Superfamily
AA [auth 5], E	IPR003375	Photosystem I PsaE, reaction centre subunit IV	Family
BA [auth 6], F, Q [auth f]	IPR036577	Photosystem I PsaF, reaction centre subunit III superfamily	Homologous Superfamily
BA [auth 6], F, Q [auth f]	IPR003666	Photosystem I PsaF, reaction centre subunit III	Family
G [auth I], R [auth i]	IPR036357	Photosystem I reaction centre subunit VIII superfamily	Homologous Superfamily
G [auth I], R [auth i]	IPR001302	Photosystem I reaction centre subunit VIII	Family
DA [auth 7], H [auth J], S [auth j]	IPR002615	Photosystem I PsaJ, reaction centre subunit IX	Family
DA [auth 7], H [auth J], S [auth j]	IPR036062	Photosystem I PsaJ, reaction centre subunit IX superfamily	Homologous Superfamily
I [auth K]	IPR037101	Photosystem I reaction centre subunit PsaK	Homologous Superfamily
I [auth K]	IPR000549	Photosystem I reaction center subunit V/PsaK	Family
I [auth K]	IPR035982	Photosystem I reaction centre subunit PsaK superfamily	Homologous Superfamily
I [auth K]	IPR017492	Photosystem I reaction center subunit PsaK	Family

Membrane Protein Annotation: OPM OPM Database Homepage

Chains	External Link	Type	Class	Superfamily	Family
A, AA [auth 5], B, BA [auth 6], C A, AA [auth 5], B, BA [auth 6], C, CA [auth h], DA [auth 7], E, EA [auth 8], F, FA [auth 0], G [auth I], GA [auth 9], H [auth J], I [auth K], J [auth L], K [auth M], L [auth a], M [auth b], N [auth c], P [auth e], Q [auth f], R [auth i], S [auth j], T [auth k], U [auth l], V [auth m], W [auth 1], X [auth 2], Y [auth 3]	OPM	Transmembrane	Alpha-helical polytopic	Photosystems	Photosystem I

Membrane Protein Annotation: PDBTM PDBTM Database Homepage

Chains	External Link	Comment
A, AA [auth 5], B, BA [auth 6], C A, AA [auth 5], B, BA [auth 6], C, CA [auth h], DA [auth 7], E, EA [auth 8], F, FA [auth 0], G [auth I], GA [auth 9], H [auth J], I [auth K], J [auth L], K [auth M], L [auth a], M [auth b], N [auth c], P [auth e], Q [auth f], R [auth i], S [auth j], T [auth k], U [auth l], V [auth m], W [auth 1], X [auth 2], Y [auth 3]	PDBTM	Annotated as membrane protein by PDBTM

Membrane Protein Annotation: MemProtMD MemProtMD Database Homepage

Chains	External Link	Comment
A, AA [auth 5], B, BA [auth 6], C A, AA [auth 5], B, BA [auth 6], C, CA [auth h], DA [auth 7], E, EA [auth 8], F, FA [auth 0], G [auth I], GA [auth 9], H [auth J], I [auth K], J [auth L], K [auth M], L [auth a], M [auth b], N [auth c], P [auth e], Q [auth f], R [auth i], S [auth j], T [auth k], U [auth l], V [auth m], W [auth 1], X [auth 2], Y [auth 3]	MemProtMD	Annotated as membrane protein by MemProtMD