2AXT

Crystal Structure of Photosystem II from Thermosynechococcus elongatus

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: 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)
E	d2axte1	Membrane and cell surface proteins and peptides	Single transmembrane helix	Cytochrome b559 subunits	Cytochrome b559 subunits	Cytochrome b559 subunit alpha, PsbE	(Thermosynechococcus vestitus ) [TaxId: 146786 ],	SCOPe (2.08)
F	d2axtf1	Membrane and cell surface proteins and peptides	Single transmembrane helix	Cytochrome b559 subunits	Cytochrome b559 subunits	Cytochrome b559 subunit beta, PsbF	(Thermosynechococcus vestitus ) [TaxId: 146786 ],	SCOPe (2.08)
H [auth I]	d2axti1	Membrane and cell surface proteins and peptides	Single transmembrane helix	Photosystem II reaction center protein I, PsbI	PsbI-like	Photosystem II reaction center protein I, PsbI	(Thermosynechococcus vestitus ) [TaxId: 146786 ],	SCOPe (2.08)
J [auth K]	d2axtk1	Membrane and cell surface proteins and peptides	Single transmembrane helix	Photosystem II reaction center protein K, PsbK	PsbK-like	Photosystem II reaction center protein K, PsbK	(Thermosynechococcus vestitus ) [TaxId: 146786 ],	SCOPe (2.08)
L [auth M]	d2axtm1	Membrane and cell surface proteins and peptides	Single transmembrane helix	Photosystem II reaction center protein M, PsbM	PsbM-like	Photosystem II reaction center protein M, PsbM	(Thermosynechococcus vestitus ) [TaxId: 146786 ],	SCOPe (2.08)
O [auth U]	d2axtu1	All alpha proteins	SAM domain-like	PsbU/PolX domain-like	PsbU-like	Photosystem II 12 kDa extrinsic protein PsbU	(Thermosynechococcus vestitus ) [TaxId: 146786 ],	SCOPe (2.08)
P [auth V]	d2axtv_	All alpha proteins	Cytochrome c	Cytochrome c	monodomain cytochrome c	automated matches	(Thermosynechococcus vestitus ) [TaxId: 146786 ],	SCOPe (2.08)
A	d2axta1	Membrane and cell surface proteins and peptides	Bacterial photosystem II reaction centre, L and M subunits	Bacterial photosystem II reaction centre, L and M subunits	Bacterial photosystem II reaction centre, L and M subunits	Photosystem Q(B) protein 1, PsbA1	(Thermosynechococcus vestitus ) [TaxId: 146786 ],	SCOPe (2.08)
K [auth L]	d2axtl1	Membrane and cell surface proteins and peptides	Single transmembrane helix	Photosystem II reaction center protein L, PsbL	PsbL-like	Photosystem II reaction center protein L, PsbL	(Thermosynechococcus vestitus ) [TaxId: 146786 ],	SCOPe (2.08)
M [auth O]	d2axto1	Membrane and cell surface proteins and peptides	Transmembrane beta-barrels	OMPA-like	PsbO-like	Manganese-stabilising protein, PsbO	(Thermosynechococcus vestitus ) [TaxId: 146786 ],	SCOPe (2.08)
N [auth T]	d2axtt1	Membrane and cell surface proteins and peptides	Single transmembrane helix	Photosystem II reaction center protein T, PsbT	PsbT-like	Photosystem II reaction center protein T, PsbT	(Thermosynechococcus vestitus ) [TaxId: 146786 ],	SCOPe (2.08)
R [auth Z]	d2axtz1	Membrane and cell surface proteins and peptides	Transmembrane helix hairpin	PsbZ-like	PsbZ-like	Photosystem II reaction center protein Z, PsbZ	(Thermosynechococcus vestitus ) [TaxId: 146786 ],	SCOPe (2.08)
B	d2axtb1	Membrane and cell surface proteins and peptides	Photosystem II antenna protein-like	Photosystem II antenna protein-like	Photosystem II antenna protein-like	Photosystem II core light harvesting protein PsbB	(Thermosynechococcus vestitus BP-1 ) [TaxId: 197221 ],	SCOPe (2.08)
C	d2axtc1	Membrane and cell surface proteins and peptides	Photosystem II antenna protein-like	Photosystem II antenna protein-like	Photosystem II antenna protein-like	Photosystem II CP43 protein PsbC	(Thermosynechococcus vestitus BP-1 ) [TaxId: 197221 ],	SCOPe (2.08)
D	d2axtd1	Membrane and cell surface proteins and peptides	Bacterial photosystem II reaction centre, L and M subunits	Bacterial photosystem II reaction centre, L and M subunits	Bacterial photosystem II reaction centre, L and M subunits	Photosystem II reaction center d2 protein PsbD2	(Thermosynechococcus vestitus BP-1 ) [TaxId: 197221 ],	SCOPe (2.08)
G [auth H]	d2axth1	Membrane and cell surface proteins and peptides	Single transmembrane helix	Photosystem II 10 kDa phosphoprotein PsbH	PsbH-like	Photosystem II reaction center protein H, PsbH	(Thermosynechococcus vestitus ) [TaxId: 146786 ],	SCOPe (2.08)
I [auth J]	d2axtj1	Membrane and cell surface proteins and peptides	Single transmembrane helix	Photosystem II reaction center protein J, PsbJ	PsbJ-like	Photosystem II reaction center protein J, PsbJ	(Thermosynechococcus vestitus ) [TaxId: 146786 ],	SCOPe (2.08)

Domain Annotation: SCOP2 Classification SCOP2 Database Homepage

Chains	Type	Family Name	Domain Identifier	Family Identifier	Provenance Source (Version)
E	SCOP2 Family	Cytochrome b559 subunits	8020369	4002681	SCOP2 (2022-06-29)
E	SCOP2 Superfamily	Cytochrome b559 subunits	8032749	3001602	SCOP2 (2022-06-29)
W [auth e]	SCOP2B Superfamily	Cytochrome b559 subunits	8032749	3001602	SCOP2B (2022-06-29)
F	SCOP2 Family	Cytochrome b559 subunits	8020372	4002681	SCOP2 (2022-06-29)
F	SCOP2 Superfamily	Cytochrome b559 subunits	8032752	3001602	SCOP2 (2022-06-29)
X [auth f]	SCOP2B Superfamily	Cytochrome b559 subunits	8032752	3001602	SCOP2B (2022-06-29)
H [auth I]	SCOP2 Family	PsbI-like	8020374	4002676	SCOP2 (2022-06-29)
H [auth I]	SCOP2 Superfamily	Photosystem II reaction center protein I, PsbI	8032754	3001590	SCOP2 (2022-06-29)
Z [auth i]	SCOP2B Superfamily	Photosystem II reaction center protein I, PsbI	8032754	3001590	SCOP2B (2022-06-29)
BA [auth k]	SCOP2B Superfamily	Photosystem II reaction center protein K, PsbK	8032757	3001585	SCOP2B (2022-06-29)
J [auth K]	SCOP2 Family	PsbK-like	8020377	4002673	SCOP2 (2022-06-29)
J [auth K]	SCOP2 Superfamily	Photosystem II reaction center protein K, PsbK	8032757	3001585	SCOP2 (2022-06-29)
L [auth M]	SCOP2 Family	PsbM-like	8020382	4002664	SCOP2 (2022-06-29)
L [auth M]	SCOP2 Superfamily	Photosystem II reaction center protein M, PsbM	8032762	3001573	SCOP2 (2022-06-29)
DA [auth m]	SCOP2B Superfamily	Photosystem II reaction center protein M, PsbM	8032762	3001573	SCOP2B (2022-06-29)
GA [auth u]	SCOP2B Superfamily	PsbU/PolX domain-like	8032768	3000893	SCOP2B (2022-06-29)
O [auth U]	SCOP2 Family	PsbU-like	8020388	4001403	SCOP2 (2022-06-29)
O [auth U]	SCOP2 Superfamily	PsbU/PolX domain-like	8032768	3000893	SCOP2 (2022-06-29)
HA [auth v]	SCOP2B Superfamily	Cytochrome c	8036565	3000815	SCOP2B (2022-06-29)
P [auth V]	SCOP2B Superfamily	Cytochrome c	8036565	3000815	SCOP2B (2022-06-29)
A	SCOP2 Family	Bacterial photosystem II reaction centre, L and M subunits	8020361	4002035	SCOP2 (2022-06-29)
A	SCOP2 Superfamily	Bacterial photosystem II reaction centre, L and M subunits	8032741	3000736	SCOP2 (2022-06-29)
S [auth a]	SCOP2B Superfamily	Bacterial photosystem II reaction centre, L and M subunits	8032741	3000736	SCOP2B (2022-06-29)
CA [auth l]	SCOP2B Superfamily	Photosystem II reaction center protein L, PsbL	8032759	3001523	SCOP2B (2022-06-29)
K [auth L]	SCOP2 Family	PsbL-like	8020379	4002634	SCOP2 (2022-06-29)
K [auth L]	SCOP2 Superfamily	Photosystem II reaction center protein L, PsbL	8032759	3001523	SCOP2 (2022-06-29)
EA [auth o]	SCOP2B Superfamily	OMPA barrel-like	8032765	3000208	SCOP2B (2022-06-29)
M [auth O]	SCOP2 Family	PsbO-like	8020385	4002770	SCOP2 (2022-06-29)
M [auth O]	SCOP2 Superfamily	OMPA barrel-like	8032765	3000208	SCOP2 (2022-06-29)
FA [auth t]	SCOP2B Superfamily	Photosystem II reaction center protein T, PsbT	8032769	3001561	SCOP2B (2022-06-29)
N [auth T]	SCOP2 Family	PsbT-like	8020389	4002656	SCOP2 (2022-06-29)
N [auth T]	SCOP2 Superfamily	Photosystem II reaction center protein T, PsbT	8032769	3001561	SCOP2 (2022-06-29)
JA [auth z]	SCOP2B Superfamily	PsbZ-like	8032770	3001624	SCOP2B (2022-06-29)
R [auth Z]	SCOP2 Family	PsbZ-like	8020390	4002701	SCOP2 (2022-06-29)
R [auth Z]	SCOP2 Superfamily	PsbZ-like	8032770	3001624	SCOP2 (2022-06-29)
B	SCOP2 Family	Photosystem II antenna protein-like	8020363	4002735	SCOP2 (2022-06-29)
B	SCOP2 Superfamily	Photosystem II antenna protein-like	8032743	3001674	SCOP2 (2022-06-29)
T [auth b]	SCOP2B Superfamily	Photosystem II antenna protein-like	8032743	3001674	SCOP2B (2022-06-29)
C	SCOP2 Family	Photosystem II antenna protein-like	8020366	4002735	SCOP2 (2022-06-29)
C	SCOP2 Superfamily	Photosystem II antenna protein-like	8032746	3001674	SCOP2 (2022-06-29)
U [auth c]	SCOP2B Superfamily	Photosystem II antenna protein-like	8032746	3001674	SCOP2B (2022-06-29)
D	SCOP2 Family	Bacterial photosystem II reaction centre, L and M subunits	8020370	4002035	SCOP2 (2022-06-29)
D	SCOP2 Superfamily	Bacterial photosystem II reaction centre, L and M subunits	8032750	3000736	SCOP2 (2022-06-29)
V [auth d]	SCOP2B Superfamily	Bacterial photosystem II reaction centre, L and M subunits	8032750	3000736	SCOP2B (2022-06-29)
G [auth H]	SCOP2 Family	PsbH-like	8020373	4002649	SCOP2 (2022-06-29)
G [auth H]	SCOP2 Superfamily	Photosystem II 10 kDa phosphoprotein PsbH	8032753	3001547	SCOP2 (2022-06-29)
Y [auth h]	SCOP2B Superfamily	Photosystem II 10 kDa phosphoprotein PsbH	8032753	3001547	SCOP2B (2022-06-29)
AA [auth j]	SCOP2B Superfamily	Photosystem II reaction center protein J, PsbJ	8032755	3001534	SCOP2B (2022-06-29)
I [auth J]	SCOP2 Family	PsbJ-like	8020375	4002642	SCOP2 (2022-06-29)
I [auth J]	SCOP2 Superfamily	Photosystem II reaction center protein J, PsbJ	8032755	3001534	SCOP2 (2022-06-29)

Domain Annotation: ECOD Classification ECOD Database Homepage

Chains	Family Name	Domain Identifier	Architecture	Possible Homology	Homology	Topology	Family	Provenance Source (Version)
E	Cytochrom_B559a	e2axtE1	A: extended segments	X: Cytochrome b559 subunits (From Topology)	H: Cytochrome b559 subunits (From Topology)	T: Cytochrome b559 subunits	F: Cytochrom_B559a	ECOD (1.6)
W [auth e]	Cytochrom_B559a	e2axte1	A: extended segments	X: Cytochrome b559 subunits (From Topology)	H: Cytochrome b559 subunits (From Topology)	T: Cytochrome b559 subunits	F: Cytochrom_B559a	ECOD (1.6)
F	Cytochrom_B559	e2axtF1	A: extended segments	X: Cytochrome b559 subunits (From Topology)	H: Cytochrome b559 subunits (From Topology)	T: Cytochrome b559 subunits	F: Cytochrom_B559	ECOD (1.6)
X [auth f]	Cytochrom_B559	e2axtf1	A: extended segments	X: Cytochrome b559 subunits (From Topology)	H: Cytochrome b559 subunits (From Topology)	T: Cytochrome b559 subunits	F: Cytochrom_B559	ECOD (1.6)
H [auth I]	PsbI	e2axtI1	A: extended segments	X: Photosystem II reaction center protein I, PsbI (From Topology)	H: Photosystem II reaction center protein I, PsbI (From Topology)	T: Photosystem II reaction center protein I, PsbI	F: PsbI	ECOD (1.6)
Z [auth i]	PsbI	e2axti1	A: extended segments	X: Photosystem II reaction center protein I, PsbI (From Topology)	H: Photosystem II reaction center protein I, PsbI (From Topology)	T: Photosystem II reaction center protein I, PsbI	F: PsbI	ECOD (1.6)
BA [auth k]	PsbK	e2axtk1	A: extended segments	X: Photosystem II reaction center protein K, PsbK (From Topology)	H: Photosystem II reaction center protein K, PsbK (From Topology)	T: Photosystem II reaction center protein K, PsbK	F: PsbK	ECOD (1.6)
J [auth K]	PsbK	e2axtK1	A: extended segments	X: Photosystem II reaction center protein K, PsbK (From Topology)	H: Photosystem II reaction center protein K, PsbK (From Topology)	T: Photosystem II reaction center protein K, PsbK	F: PsbK	ECOD (1.6)
L [auth M]	PsbM	e2axtM1	A: extended segments	X: Photosystem II reaction center protein M, PsbM (From Topology)	H: Photosystem II reaction center protein M, PsbM (From Topology)	T: Photosystem II reaction center protein M, PsbM	F: PsbM	ECOD (1.6)
DA [auth m]	PsbM	e2axtm1	A: extended segments	X: Photosystem II reaction center protein M, PsbM (From Topology)	H: Photosystem II reaction center protein M, PsbM (From Topology)	T: Photosystem II reaction center protein M, PsbM	F: PsbM	ECOD (1.6)
GA [auth u]	PsbU	e2axtu1	A: alpha arrays	X: HhH/H2TH	H: SAM/DNA-glycosylase	T: SAM domain-like	F: PsbU	ECOD (1.6)
O [auth U]	PsbU	e2axtU1	A: alpha arrays	X: HhH/H2TH	H: SAM/DNA-glycosylase	T: SAM domain-like	F: PsbU	ECOD (1.6)
HA [auth v]	Cytochrom_C550	e2axtv1	A: alpha arrays	X: Cytochrome c-like	H: Cytochrome c (From Topology)	T: Cytochrome c	F: Cytochrom_C550	ECOD (1.6)
P [auth V]	Cytochrom_C550	e2axtV1	A: alpha arrays	X: Cytochrome c-like	H: Cytochrome c (From Topology)	T: Cytochrome c	F: Cytochrom_C550	ECOD (1.6)
A	Photo_RC	e2axtA1	A: alpha bundles	X: Bacterial photosystem II reaction centre L and M subunits-like (From Topology)	H: Bacterial photosystem II reaction centre L and M subunits-like (From Topology)	T: Bacterial photosystem II reaction centre L and M subunits-like	F: Photo_RC	ECOD (1.6)
S [auth a]	Photo_RC	e2axta1	A: alpha bundles	X: Bacterial photosystem II reaction centre L and M subunits-like (From Topology)	H: Bacterial photosystem II reaction centre L and M subunits-like (From Topology)	T: Bacterial photosystem II reaction centre L and M subunits-like	F: Photo_RC	ECOD (1.6)
CA [auth l]	PsbL	e2axtl1	A: extended segments	X: Photosystem II reaction center protein L, PsbL (From Topology)	H: Photosystem II reaction center protein L, PsbL (From Topology)	T: Photosystem II reaction center protein L, PsbL	F: PsbL	ECOD (1.6)
K [auth L]	PsbL	e2axtL1	A: extended segments	X: Photosystem II reaction center protein L, PsbL (From Topology)	H: Photosystem II reaction center protein L, PsbL (From Topology)	T: Photosystem II reaction center protein L, PsbL	F: PsbL	ECOD (1.6)
EA [auth o]	MSP	e2axto1	A: beta barrels	X: Outer membrane meander beta-barrels	H: OMPA-like (From Topology)	T: OMPA-like	F: MSP	ECOD (1.6)
M [auth O]	MSP	e2axtO1	A: beta barrels	X: Outer membrane meander beta-barrels	H: OMPA-like (From Topology)	T: OMPA-like	F: MSP	ECOD (1.6)
FA [auth t]	PsbT	e2axtt1	A: extended segments	X: Photosystem II reaction center protein T, PsbT (From Topology)	H: Photosystem II reaction center protein T, PsbT (From Topology)	T: Photosystem II reaction center protein T, PsbT	F: PsbT	ECOD (1.6)
N [auth T]	PsbT	e2axtT1	A: extended segments	X: Photosystem II reaction center protein T, PsbT (From Topology)	H: Photosystem II reaction center protein T, PsbT (From Topology)	T: Photosystem II reaction center protein T, PsbT	F: PsbT	ECOD (1.6)
JA [auth z]	Ycf9	e2axtz1	A: extended segments	X: PsbZ-like (From Topology)	H: PsbZ-like (From Topology)	T: PsbZ-like	F: Ycf9	ECOD (1.6)
R [auth Z]	Ycf9	e2axtZ1	A: extended segments	X: PsbZ-like (From Topology)	H: PsbZ-like (From Topology)	T: PsbZ-like	F: Ycf9	ECOD (1.6)
B	PSII_1st	e2axtB2	A: alpha bundles	X: Photosystem II antenna protein-like (From Topology)	H: Photosystem II antenna protein-like (From Topology)	T: Photosystem II antenna protein-like	F: PSII_1st	ECOD (1.6)
B	PSII_2nd	e2axtB3	A: a+b two layers	X: Photosystem II antenna protein PsbB insertion domain (From Topology)	H: Photosystem II antenna protein PsbB insertion domain (From Topology)	T: Photosystem II antenna protein PsbB insertion domain	F: PSII_2nd	ECOD (1.6)
T [auth b]	PSII_1st	e2axtb1	A: alpha bundles	X: Photosystem II antenna protein-like (From Topology)	H: Photosystem II antenna protein-like (From Topology)	T: Photosystem II antenna protein-like	F: PSII_1st	ECOD (1.6)
T [auth b]	PSII_2nd	e2axtb2	A: a+b two layers	X: Photosystem II antenna protein PsbB insertion domain (From Topology)	H: Photosystem II antenna protein PsbB insertion domain (From Topology)	T: Photosystem II antenna protein PsbB insertion domain	F: PSII_2nd	ECOD (1.6)
C	PSII_1st	e2axtC1	A: alpha bundles	X: Photosystem II antenna protein-like (From Topology)	H: Photosystem II antenna protein-like (From Topology)	T: Photosystem II antenna protein-like	F: PSII_1st	ECOD (1.6)
U [auth c]	PSII_1st	e2axtc1	A: alpha bundles	X: Photosystem II antenna protein-like (From Topology)	H: Photosystem II antenna protein-like (From Topology)	T: Photosystem II antenna protein-like	F: PSII_1st	ECOD (1.6)
D	Photo_RC	e2axtD1	A: alpha bundles	X: Bacterial photosystem II reaction centre L and M subunits-like (From Topology)	H: Bacterial photosystem II reaction centre L and M subunits-like (From Topology)	T: Bacterial photosystem II reaction centre L and M subunits-like	F: Photo_RC	ECOD (1.6)
V [auth d]	Photo_RC	e2axtd1	A: alpha bundles	X: Bacterial photosystem II reaction centre L and M subunits-like (From Topology)	H: Bacterial photosystem II reaction centre L and M subunits-like (From Topology)	T: Bacterial photosystem II reaction centre L and M subunits-like	F: Photo_RC	ECOD (1.6)
G [auth H]	PsbH	e2axtH1	A: extended segments	X: Photosystem II 10 kDa phosphoprotein PsbH (From Topology)	H: Photosystem II 10 kDa phosphoprotein PsbH (From Topology)	T: Photosystem II 10 kDa phosphoprotein PsbH	F: PsbH	ECOD (1.6)
Y [auth h]	PsbH	e2axth1	A: extended segments	X: Photosystem II 10 kDa phosphoprotein PsbH (From Topology)	H: Photosystem II 10 kDa phosphoprotein PsbH (From Topology)	T: Photosystem II 10 kDa phosphoprotein PsbH	F: PsbH	ECOD (1.6)
AA [auth j]	PsbJ	e2axtj1	A: extended segments	X: Photosystem II reaction center protein J, PsbJ (From Topology)	H: Photosystem II reaction center protein J, PsbJ (From Topology)	T: Photosystem II reaction center protein J, PsbJ	F: PsbJ	ECOD (1.6)
I [auth J]	PsbJ	e2axtJ1	A: extended segments	X: Photosystem II reaction center protein J, PsbJ (From Topology)	H: Photosystem II reaction center protein J, PsbJ (From Topology)	T: Photosystem II reaction center protein J, PsbJ	F: PsbJ	ECOD (1.6)

Domain Annotation: CATH CATH Database Homepage

Chain	Domain	Class	Architecture	Topology	Homology	Provenance Source (Version)
E	1.20.5.860	Mainly Alpha	Up-down Bundle	Single alpha-helices involved in coiled-coils or other helix-helix interfaces	Photosystem II cytochrome b559, alpha subunit	CATH (4.3.0)
W [auth e]	1.20.5.860	Mainly Alpha	Up-down Bundle	Single alpha-helices involved in coiled-coils or other helix-helix interfaces	Photosystem II cytochrome b559, alpha subunit	CATH (4.3.0)
GA [auth u]	1.10.150.320	Mainly Alpha	Orthogonal Bundle	DNA polymerase	domain 1	CATH (4.3.0)
O [auth U]	1.10.150.320	Mainly Alpha	Orthogonal Bundle	DNA polymerase	domain 1	CATH (4.3.0)
HA [auth v]	1.10.760.10	Mainly Alpha	Orthogonal Bundle	Cytochrome Bc1 Complex	Chain D, domain 2	CATH (4.3.0)
P [auth V]	1.10.760.10	Mainly Alpha	Orthogonal Bundle	Cytochrome Bc1 Complex	Chain D, domain 2	CATH (4.3.0)
EA [auth o]	2.40.160.30	Mainly Beta	Beta Barrel	Porin	Photosystem II, cytochrome c-550 precursor	CATH (4.3.0)
EA [auth o]	3.30.2050.10	Alpha Beta	2-Layer Sandwich	photosynthetic oxygen evolving center fold	photosynthetic oxygen evolving center domain	CATH (4.3.0)
M [auth O]	2.40.160.30	Mainly Beta	Beta Barrel	Porin	Photosystem II, cytochrome c-550 precursor	CATH (4.3.0)
M [auth O]	3.30.2050.10	Alpha Beta	2-Layer Sandwich	photosynthetic oxygen evolving center fold	photosynthetic oxygen evolving center domain	CATH (4.3.0)
JA [auth z]	1.10.287.740	Mainly Alpha	Orthogonal Bundle	Helix Hairpins	Photosystem II PsbZ, reaction centre	CATH (4.3.0)
R [auth Z]	1.10.287.740	Mainly Alpha	Orthogonal Bundle	Helix Hairpins	Photosystem II PsbZ, reaction centre	CATH (4.3.0)
B	3.10.680.10	Alpha Beta	Roll	Photosystem II CP47 reaction center protein	Photosystem II CP47 reaction center protein	CATH (4.3.0)
T [auth b]	3.10.680.10	Alpha Beta	Roll	Photosystem II CP47 reaction center protein	Photosystem II CP47 reaction center protein	CATH (4.3.0)
C	1.10.10.670	Mainly Alpha	Orthogonal Bundle	Arc Repressor Mutant, subunit A	photosystem ii from thermosynechococcus elongatus	CATH (4.3.0)
U [auth c]	1.10.10.670	Mainly Alpha	Orthogonal Bundle	Arc Repressor Mutant, subunit A	photosystem ii from thermosynechococcus elongatus	CATH (4.3.0)
G [auth H]	1.20.5.880	Mainly Alpha	Up-down Bundle	Single alpha-helices involved in coiled-coils or other helix-helix interfaces	Photosystem II reaction center protein H	CATH (4.3.0)
Y [auth h]	1.20.5.880	Mainly Alpha	Up-down Bundle	Single alpha-helices involved in coiled-coils or other helix-helix interfaces	Photosystem II reaction center protein H	CATH (4.3.0)

Protein Family Annotation Pfam Database Homepage

Chains	Accession	Name	Description	Comments	Source
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
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
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
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
A, S [auth a]	PF00124	Photosynthetic reaction centre protein (Photo_RC)	Photosynthetic reaction centre protein	-	Family
CA [auth l], K [auth L]	PF02419	PsbL protein (PsbL)	PsbL protein	-	Family
FA [auth t], N [auth T]	PF01405	Photosystem II reaction centre T protein (PsbT)	Photosystem II reaction centre T protein	-	Family
JA [auth z], R [auth Z]	PF01737	YCF9 (Ycf9)	YCF9	-	Family
C, U [auth c]	PF00421	Photosystem II protein (PSII)	Photosystem II protein	-	Family
D, V [auth d]	PF00124	Photosynthetic reaction centre protein (Photo_RC)	Photosynthetic reaction centre protein	-	Family
G [auth H], Y [auth h]	PF00737	Photosystem II 10 kDa phosphoprotein (PsbH)	Photosystem II 10 kDa phosphoprotein	-	Family

Gene Ontology: Gene Product Annotation Gene Ontology Database Homepage

Chains	Polymer	Molecular Function	Biological Process	Cellular Component
E, W [auth e]	Cytochrome b559 alpha subunit	binding organic cyclic compound binding tetrapyrrole binding heme binding electron transfer activity cation binding transition metal ion binding iron ion binding ion binding metal ion binding small molecule binding	photosynthesis photosynthesis, light reaction photosynthetic electron transport chain cellular metabolic process electron transport chain metabolic process cellular process generation of precursor metabolites and energy	protein-containing complex photosystem intracellular anatomical structure photosystem II membrane membrane protein complex cellular anatomical entity photosystem II reaction center intracellular organelle organelle intracellular non-membrane-bounded organelle photosynthetic membrane thylakoid non-membrane-bounded organelle protein-containing complex photosystem intracellular anatomical structure photosystem II membrane membrane protein complex cellular anatomical entity photosystem II reaction center intracellular organelle organelle intracellular non-membrane-bounded organelle photosynthetic membrane thylakoid non-membrane-bounded organelle plasma membrane-derived chromatophore membrane plasma membrane plasma membrane-derived chromatophore thylakoid membrane cell periphery plasma membrane-derived thylakoid membrane plasma membrane region bacterial thylakoid cytoplasm
F, X [auth f]	Cytochrome b559 beta subunit	binding organic cyclic compound binding tetrapyrrole binding heme binding electron transfer activity cation binding transition metal ion binding iron ion binding ion binding metal ion binding small molecule binding	photosynthesis photosynthesis, light reaction photosynthetic electron transport chain cellular metabolic process electron transport chain metabolic process cellular process generation of precursor metabolites and energy	protein-containing complex photosystem intracellular anatomical structure photosystem II membrane membrane protein complex cellular anatomical entity photosystem II reaction center intracellular organelle organelle intracellular non-membrane-bounded organelle photosynthetic membrane thylakoid non-membrane-bounded organelle protein-containing complex photosystem intracellular anatomical structure photosystem II membrane membrane protein complex cellular anatomical entity photosystem II reaction center intracellular organelle organelle intracellular non-membrane-bounded organelle photosynthetic membrane thylakoid non-membrane-bounded organelle plasma membrane-derived chromatophore membrane plasma membrane plasma membrane-derived chromatophore thylakoid membrane cell periphery plasma membrane-derived thylakoid membrane plasma membrane region bacterial thylakoid cytoplasm
H [auth I], Z [auth i]	Photosystem II reaction center I protein	-	photosynthesis cellular metabolic process metabolic process cellular process	protein-containing complex photosystem intracellular anatomical structure photosystem II membrane membrane protein complex cellular anatomical entity photosystem II reaction center intracellular organelle organelle intracellular non-membrane-bounded organelle photosynthetic membrane thylakoid non-membrane-bounded organelle protein-containing complex photosystem intracellular anatomical structure photosystem II membrane membrane protein complex cellular anatomical entity photosystem II reaction center intracellular organelle organelle intracellular non-membrane-bounded organelle photosynthetic membrane thylakoid non-membrane-bounded organelle plasma membrane-derived chromatophore membrane plasma membrane plasma membrane-derived chromatophore thylakoid membrane cell periphery plasma membrane-derived thylakoid membrane plasma membrane region bacterial thylakoid cytoplasm
BA [auth k], J [auth K]	Photosystem II reaction center protein K	-	photosynthesis cellular metabolic process metabolic process cellular process	protein-containing complex photosystem intracellular anatomical structure photosystem II membrane membrane protein complex cellular anatomical entity photosystem II reaction center intracellular organelle organelle intracellular non-membrane-bounded organelle photosynthetic membrane thylakoid non-membrane-bounded organelle protein-containing complex photosystem intracellular anatomical structure photosystem II membrane membrane protein complex cellular anatomical entity photosystem II reaction center intracellular organelle organelle intracellular non-membrane-bounded organelle photosynthetic membrane thylakoid non-membrane-bounded organelle plasma membrane-derived chromatophore membrane plasma membrane plasma membrane-derived chromatophore thylakoid membrane cell periphery plasma membrane-derived thylakoid membrane plasma membrane region bacterial thylakoid cytoplasm
DA [auth m], L [auth M]	Photosystem II reaction center M protein	-	photosynthesis photosynthesis, light reaction cellular metabolic process metabolic process cellular process generation of precursor metabolites and energy	protein-containing complex photosystem intracellular anatomical structure photosystem II membrane membrane protein complex cellular anatomical entity intracellular organelle organelle intracellular non-membrane-bounded organelle photosynthetic membrane thylakoid non-membrane-bounded organelle plasma membrane-derived chromatophore membrane protein-containing complex photosystem intracellular anatomical structure photosystem II membrane membrane protein complex cellular anatomical entity intracellular organelle organelle intracellular non-membrane-bounded organelle photosynthetic membrane thylakoid non-membrane-bounded organelle plasma membrane-derived chromatophore membrane plasma membrane plasma membrane-derived chromatophore thylakoid membrane cell periphery plasma membrane-derived thylakoid membrane plasma membrane region bacterial thylakoid cytoplasm
GA [auth u], O [auth U]	Photosystem II 12 kDa extrinsic protein	-	photosynthesis cellular metabolic process metabolic process cellular process regulation of biological process regulation of cellular process regulation of photosynthesis photosynthesis, light reaction photosystem II stabilization regulation of photosynthesis, light reaction biological regulation regulation of cellular metabolic process regulation of generation of precursor metabolites and energy generation of precursor metabolites and energy photosynthesis cellular metabolic process metabolic process cellular process regulation of biological process regulation of cellular process regulation of photosynthesis photosynthesis, light reaction photosystem II stabilization regulation of photosynthesis, light reaction biological regulation regulation of cellular metabolic process regulation of generation of precursor metabolites and energy generation of precursor metabolites and energy regulation of metabolic process	intracellular anatomical structure plasma membrane-derived chromatophore membrane membrane plasma membrane plasma membrane-derived chromatophore cellular anatomical entity thylakoid membrane intracellular organelle cell periphery plasma membrane-derived thylakoid membrane organelle intracellular non-membrane-bounded organelle plasma membrane region bacterial thylakoid intracellular anatomical structure plasma membrane-derived chromatophore membrane membrane plasma membrane plasma membrane-derived chromatophore cellular anatomical entity thylakoid membrane intracellular organelle cell periphery plasma membrane-derived thylakoid membrane organelle intracellular non-membrane-bounded organelle plasma membrane region bacterial thylakoid cytoplasm photosynthetic membrane thylakoid non-membrane-bounded organelle extrinsic component of membrane protein-containing complex photosystem catalytic complex photosystem II membrane protein complex photosystem II oxygen evolving complex oxidoreductase complex
HA [auth v], P [auth V]	Cytochrome c-550	binding organic cyclic compound binding tetrapyrrole binding heme binding electron transfer activity cation binding transition metal ion binding iron ion binding ion binding metal ion binding small molecule binding	photosynthesis photosynthesis, light reaction cellular metabolic process metabolic process cellular process generation of precursor metabolites and energy cellular respiration energy derivation by oxidation of organic compounds respiratory electron transport chain electron transport chain	protein-containing complex photosystem intracellular anatomical structure photosystem II membrane membrane protein complex cellular anatomical entity intracellular organelle organelle intracellular non-membrane-bounded organelle photosynthetic membrane thylakoid non-membrane-bounded organelle plasma membrane-derived chromatophore membrane protein-containing complex photosystem intracellular anatomical structure photosystem II membrane membrane protein complex cellular anatomical entity intracellular organelle organelle intracellular non-membrane-bounded organelle photosynthetic membrane thylakoid non-membrane-bounded organelle plasma membrane-derived chromatophore membrane plasma membrane plasma membrane-derived chromatophore thylakoid membrane cell periphery plasma membrane-derived thylakoid membrane plasma membrane region bacterial thylakoid cytoplasm
A, S [auth a]	Photosystem Q(B) protein	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 cellular metabolic process electron transport chain photosynthetic electron transport in photosystem II metabolic process cellular process generation of precursor metabolites and energy response to stimulus response to chemical response to stress response to herbicide response to toxic substance	protein-containing complex photosystem intracellular anatomical structure photosystem II membrane membrane protein complex cellular anatomical entity intracellular organelle organelle intracellular non-membrane-bounded organelle photosynthetic membrane thylakoid non-membrane-bounded organelle plasma membrane-derived chromatophore membrane protein-containing complex photosystem intracellular anatomical structure photosystem II membrane membrane protein complex cellular anatomical entity intracellular organelle organelle intracellular non-membrane-bounded organelle photosynthetic membrane thylakoid non-membrane-bounded organelle plasma membrane-derived chromatophore membrane plasma membrane plasma membrane-derived chromatophore thylakoid membrane cell periphery plasma membrane-derived thylakoid membrane plasma membrane region bacterial thylakoid cytoplasm
CA [auth l], K [auth L]	Photosystem II reaction center L protein	-	photosynthesis cellular metabolic process metabolic process cellular process	protein-containing complex photosystem intracellular anatomical structure photosystem II membrane membrane protein complex cellular anatomical entity photosystem II reaction center intracellular organelle organelle intracellular non-membrane-bounded organelle photosynthetic membrane thylakoid non-membrane-bounded organelle protein-containing complex photosystem intracellular anatomical structure photosystem II membrane membrane protein complex cellular anatomical entity photosystem II reaction center intracellular organelle organelle intracellular non-membrane-bounded organelle photosynthetic membrane thylakoid non-membrane-bounded organelle plasma membrane-derived chromatophore membrane plasma membrane plasma membrane-derived chromatophore thylakoid membrane cell periphery plasma membrane-derived thylakoid membrane plasma membrane region bacterial thylakoid cytoplasm
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 cellular metabolic process generation of precursor metabolites and energy photosystem II assembly cellular component organization cellular component biogenesis cellular component assembly protein-containing complex assembly cellular process metabolic process cellular component organization or biogenesis regulation of biological process photosynthesis protein-containing complex organization photosynthesis, light reaction cellular metabolic process generation of precursor metabolites and energy photosystem II assembly cellular component organization cellular component biogenesis cellular component assembly protein-containing complex assembly cellular process metabolic process cellular component organization or biogenesis regulation of biological process regulation of cellular process regulation of photosynthesis photosystem II stabilization regulation of photosynthesis, light reaction biological regulation regulation of cellular metabolic process regulation of generation of precursor metabolites and energy regulation of metabolic process	intracellular anatomical structure plasma membrane-derived chromatophore membrane membrane plasma membrane plasma membrane-derived chromatophore cellular anatomical entity thylakoid membrane intracellular organelle cell periphery plasma membrane-derived thylakoid membrane organelle intracellular non-membrane-bounded organelle plasma membrane region bacterial thylakoid intracellular anatomical structure plasma membrane-derived chromatophore membrane membrane plasma membrane plasma membrane-derived chromatophore cellular anatomical entity thylakoid membrane intracellular organelle cell periphery plasma membrane-derived thylakoid membrane organelle intracellular non-membrane-bounded organelle plasma membrane region bacterial thylakoid cytoplasm photosynthetic membrane thylakoid non-membrane-bounded organelle protein-containing complex photosystem catalytic complex photosystem II membrane protein complex photosystem II oxygen evolving complex oxidoreductase complex
FA [auth t], N [auth T]	Photosystem II reaction center T protein	-	photosynthesis cellular metabolic process metabolic process cellular process	protein-containing complex photosystem intracellular anatomical structure photosystem II membrane membrane protein complex cellular anatomical entity photosystem II reaction center intracellular organelle organelle intracellular non-membrane-bounded organelle photosynthetic membrane thylakoid non-membrane-bounded organelle protein-containing complex photosystem intracellular anatomical structure photosystem II membrane membrane protein complex cellular anatomical entity photosystem II reaction center intracellular organelle organelle intracellular non-membrane-bounded organelle photosynthetic membrane thylakoid non-membrane-bounded organelle plasma membrane-derived chromatophore membrane plasma membrane plasma membrane-derived chromatophore thylakoid membrane cell periphery plasma membrane-derived thylakoid membrane plasma membrane region bacterial thylakoid cytoplasm
IA [auth x], Q [auth X]	Unassigned subunits	-	-	-
JA [auth z], R [auth Z]	Photosystem II reaction center Z protein	-	photosynthesis cellular metabolic process metabolic process cellular process regulation of biological process regulation of cellular process regulation of photosynthesis photosynthesis, light reaction photosystem II stabilization regulation of photosynthesis, light reaction biological regulation regulation of cellular metabolic process regulation of generation of precursor metabolites and energy generation of precursor metabolites and energy photosynthesis cellular metabolic process metabolic process cellular process regulation of biological process regulation of cellular process regulation of photosynthesis photosynthesis, light reaction photosystem II stabilization regulation of photosynthesis, light reaction biological regulation regulation of cellular metabolic process regulation of generation of precursor metabolites and energy generation of precursor metabolites and energy regulation of metabolic process	protein-containing complex photosystem intracellular anatomical structure photosystem II membrane membrane protein complex cellular anatomical entity photosystem II reaction center intracellular organelle organelle intracellular non-membrane-bounded organelle photosynthetic membrane thylakoid non-membrane-bounded organelle protein-containing complex photosystem intracellular anatomical structure photosystem II membrane membrane protein complex cellular anatomical entity photosystem II reaction center intracellular organelle organelle intracellular non-membrane-bounded organelle photosynthetic membrane thylakoid non-membrane-bounded organelle plasma membrane-derived chromatophore membrane plasma membrane plasma membrane-derived chromatophore thylakoid membrane cell periphery plasma membrane-derived thylakoid membrane plasma membrane region bacterial thylakoid cytoplasm
B, T [auth b]	CP47 protein	electron transfer activity electron transporter, transferring electrons within the cyclic electron transport pathway of photosynthesis activity chlorophyll binding binding organic cyclic compound binding tetrapyrrole binding	photosynthesis photosynthesis, light reaction photosynthetic electron transport chain cellular metabolic process electron transport chain photosynthetic electron transport in photosystem II metabolic process cellular process generation of precursor metabolites and energy	protein-containing complex photosystem intracellular anatomical structure photosystem II membrane membrane protein complex cellular anatomical entity intracellular organelle organelle intracellular non-membrane-bounded organelle photosynthetic membrane thylakoid non-membrane-bounded organelle plasma membrane-derived chromatophore membrane protein-containing complex photosystem intracellular anatomical structure photosystem II membrane membrane protein complex cellular anatomical entity intracellular organelle organelle intracellular non-membrane-bounded organelle photosynthetic membrane thylakoid non-membrane-bounded organelle plasma membrane-derived chromatophore membrane plasma membrane plasma membrane-derived chromatophore thylakoid membrane cell periphery plasma membrane-derived thylakoid membrane plasma membrane region bacterial thylakoid cytoplasm
C, U [auth c]	photosystem II CP43 protein	electron transfer activity electron transporter, transferring electrons within the cyclic electron transport pathway of photosynthesis activity chlorophyll binding binding organic cyclic compound binding tetrapyrrole binding cation binding ion binding metal ion binding small molecule binding	photosynthesis photosynthesis, light reaction photosynthetic electron transport chain cellular metabolic process electron transport chain photosynthetic electron transport in photosystem II metabolic process cellular process generation of precursor metabolites and energy	protein-containing complex photosystem intracellular anatomical structure photosystem II membrane membrane protein complex cellular anatomical entity intracellular organelle organelle intracellular non-membrane-bounded organelle photosynthetic membrane thylakoid non-membrane-bounded organelle plasma membrane-derived chromatophore membrane protein-containing complex photosystem intracellular anatomical structure photosystem II membrane membrane protein complex cellular anatomical entity intracellular organelle organelle intracellular non-membrane-bounded organelle photosynthetic membrane thylakoid non-membrane-bounded organelle plasma membrane-derived chromatophore membrane plasma membrane plasma membrane-derived chromatophore thylakoid membrane cell periphery plasma membrane-derived thylakoid membrane plasma membrane region bacterial thylakoid cytoplasm
D, V [auth d]	photosystem II reaction center D2 protein	electron transfer activity electron transporter, transferring electrons within the cyclic electron transport pathway of photosynthesis activity oxidoreductase activity oxygen evolving activity catalytic activity chlorophyll binding binding organic cyclic compound binding tetrapyrrole binding cation binding transition metal ion binding iron ion binding ion binding metal ion binding electron transfer activity electron transporter, transferring electrons within the cyclic electron transport pathway of photosynthesis activity oxidoreductase activity oxygen evolving activity catalytic activity chlorophyll binding binding organic cyclic compound binding tetrapyrrole binding cation binding transition metal ion binding iron ion binding ion binding metal ion binding small molecule binding	photosynthesis photosynthesis, light reaction photosynthetic electron transport chain cellular metabolic process electron transport chain photosynthetic electron transport in photosystem II metabolic process cellular process generation of precursor metabolites and energy	protein-containing complex photosystem intracellular anatomical structure photosystem II membrane membrane protein complex cellular anatomical entity intracellular organelle organelle intracellular non-membrane-bounded organelle photosynthetic membrane thylakoid non-membrane-bounded organelle plasma membrane-derived chromatophore membrane protein-containing complex photosystem intracellular anatomical structure photosystem II membrane membrane protein complex cellular anatomical entity intracellular organelle organelle intracellular non-membrane-bounded organelle photosynthetic membrane thylakoid non-membrane-bounded organelle plasma membrane-derived chromatophore membrane plasma membrane plasma membrane-derived chromatophore thylakoid membrane cell periphery plasma membrane-derived thylakoid membrane plasma membrane region bacterial thylakoid cytoplasm
G [auth H], Y [auth h]	Photosystem II reaction center H protein	ion binding binding anion binding phosphate ion binding small molecule binding	regulation of protein stability biological regulation regulation of biological quality protein stabilization photosynthesis cellular metabolic process metabolic process cellular process	protein-containing complex photosystem intracellular anatomical structure photosystem II membrane membrane protein complex cellular anatomical entity intracellular organelle organelle intracellular non-membrane-bounded organelle photosynthetic membrane thylakoid non-membrane-bounded organelle plasma membrane-derived chromatophore membrane protein-containing complex photosystem intracellular anatomical structure photosystem II membrane membrane protein complex cellular anatomical entity intracellular organelle organelle intracellular non-membrane-bounded organelle photosynthetic membrane thylakoid non-membrane-bounded organelle plasma membrane-derived chromatophore membrane plasma membrane plasma membrane-derived chromatophore thylakoid membrane cell periphery plasma membrane-derived thylakoid membrane plasma membrane region bacterial thylakoid cytoplasm
AA [auth j], I [auth J]	Photosystem II reaction center J protein	-	photosynthesis cellular metabolic process metabolic process cellular process	protein-containing complex photosystem intracellular anatomical structure photosystem II membrane membrane protein complex cellular anatomical entity photosystem II reaction center intracellular organelle organelle intracellular non-membrane-bounded organelle photosynthetic membrane thylakoid non-membrane-bounded organelle protein-containing complex photosystem intracellular anatomical structure photosystem II membrane membrane protein complex cellular anatomical entity photosystem II reaction center intracellular organelle organelle intracellular non-membrane-bounded organelle photosynthetic membrane thylakoid non-membrane-bounded organelle plasma membrane-derived chromatophore membrane plasma membrane plasma membrane-derived chromatophore thylakoid membrane cell periphery plasma membrane-derived thylakoid membrane plasma membrane region bacterial thylakoid cytoplasm

InterPro: Protein Family Classification InterPro Database Homepage

Chains	Accession	Name	Type
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
H [auth I], Z [auth i]	IPR037271	Photosystem II PsbI superfamily	Homologous Superfamily
H [auth I], Z [auth i]	IPR003686	Photosystem II PsbI	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
DA [auth m], L [auth M]	IPR007826	Photosystem II PsbM	Family
DA [auth m], L [auth M]	IPR037269	Photosystem II PsbM 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]	IPR016003	Photosystem II extrinsic protein V, cytochrome c-550 precursor-like	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]	IPR029490	Cytochrome c-550 domain	Domain
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
CA [auth l], K [auth L]	IPR003372	Photosystem II PsbL	Family
CA [auth l], K [auth L]	IPR037266	Photosystem II PsbL 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
JA [auth z], R [auth Z]	IPR036512	Photosystem II PsbZ superfamily	Homologous Superfamily
JA [auth z], R [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
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
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
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
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], J [auth K], JA [auth z], K [auth L], L [auth M], M [auth O], N [auth T], O [auth U], P [auth V], R [auth Z], 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

Membrane Protein Annotation: MemProtMD MemProtMD 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], J [auth K], JA [auth z], K [auth L], L [auth M], M [auth O], N [auth T], O [auth U], P [auth V], R [auth Z], S [auth a], T [auth b], U [auth c], V [auth d], W [auth e], X [auth f], Y [auth h], Z [auth i]	MemProtMD	Annotated as membrane protein by MemProtMD