7R0W

2.8 Angstrom cryo-EM structure of the dimeric cytochrome b6f-PetP complex from Synechocystis sp. PCC 6803 with natively bound lipids and plastoquinone molecules

External Resource: Annotation

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

Domain Annotation: ECOD Classification ECOD Database Homepage

Chains	Family Name	Domain Identifier	Architecture	Possible Homology	Homology	Topology	Family	Provenance Source (Version)
A [auth X]	DUF2862	e7r0wX1	A: beta barrels	X: SH3	H: SH3	T: SH3	F: DUF2862	ECOD (1.6)
R [auth V]	DUF2862	e7r0wV1	A: beta barrels	X: SH3	H: SH3	T: SH3	F: DUF2862	ECOD (1.6)
B [auth I]	Cytochrome_B	e7r0wI1	A: alpha bundles	X: Transmembrane heme-binding four-helical bundle (From Homology)	H: Transmembrane heme-binding four-helical bundle	T: Transmembrane di-heme cytochromes	F: Cytochrome_B	ECOD (1.6)
I [auth A]	Cytochrome_B	e7r0wA1	A: alpha bundles	X: Transmembrane heme-binding four-helical bundle (From Homology)	H: Transmembrane heme-binding four-helical bundle	T: Transmembrane di-heme cytochromes	F: Cytochrome_B	ECOD (1.6)
C [auth J]	Cytochrom_B_C	e7r0wJ1	A: alpha bundles	X: a domain/subunit of cytochrome bc1 complex (Ubiquinol-cytochrome c reductase) (From Topology)	H: a domain/subunit of cytochrome bc1 complex (Ubiquinol-cytochrome c reductase) (From Topology)	T: a domain/subunit of cytochrome bc1 complex (Ubiquinol-cytochrome c reductase)	F: Cytochrom_B_C	ECOD (1.6)
J [auth B]	Cytochrom_B_C	e7r0wB1	A: alpha bundles	X: a domain/subunit of cytochrome bc1 complex (Ubiquinol-cytochrome c reductase) (From Topology)	H: a domain/subunit of cytochrome bc1 complex (Ubiquinol-cytochrome c reductase) (From Topology)	T: a domain/subunit of cytochrome bc1 complex (Ubiquinol-cytochrome c reductase)	F: Cytochrom_B_C	ECOD (1.6)
D [auth K]	Apocytochr_F_N	e7r0wK3	A: beta sandwiches	X: Immunoglobulin-like beta-sandwich	H: Immunoglobulin-related	T: Common fold of diphtheria toxin/transcription factors/cytochrome f	F: Apocytochr_F_N	ECOD (1.6)
D [auth K]	Apocytochr_F_C_N	e7r0wK2	A: a+b complex topology	X: alpha/beta-Hammerhead/Barrel-sandwich hybrid	H: alpha/beta-Hammerhead/Barrel-sandwich hybrid	T: Single hybrid motif	F: Apocytochr_F_C_N	ECOD (1.6)
D [auth K]	Apocytochr_F_C_C	e7r0wK1	A: extended segments	X: Cytochrome f subunit of the cytochrome b6f complex, transmembrane anchor (From Topology)	H: Cytochrome f subunit of the cytochrome b6f complex, transmembrane anchor (From Topology)	T: Cytochrome f subunit of the cytochrome b6f complex, transmembrane anchor	F: Apocytochr_F_C_C	ECOD (1.6)
K [auth C]	Apocytochr_F_N	e7r0wC3	A: beta sandwiches	X: Immunoglobulin-like beta-sandwich	H: Immunoglobulin-related	T: Common fold of diphtheria toxin/transcription factors/cytochrome f	F: Apocytochr_F_N	ECOD (1.6)
K [auth C]	Apocytochr_F_C_N	e7r0wC2	A: a+b complex topology	X: alpha/beta-Hammerhead/Barrel-sandwich hybrid	H: alpha/beta-Hammerhead/Barrel-sandwich hybrid	T: Single hybrid motif	F: Apocytochr_F_C_N	ECOD (1.6)
K [auth C]	Apocytochr_F_C_C	e7r0wC1	A: extended segments	X: Cytochrome f subunit of the cytochrome b6f complex, transmembrane anchor (From Topology)	H: Cytochrome f subunit of the cytochrome b6f complex, transmembrane anchor (From Topology)	T: Cytochrome f subunit of the cytochrome b6f complex, transmembrane anchor	F: Apocytochr_F_C_C	ECOD (1.6)
E [auth M]	PetL_1	e7r0wM1	A: extended segments	X: PetL subunit of the cytochrome b6f complex (From Topology)	H: PetL subunit of the cytochrome b6f complex (From Topology)	T: PetL subunit of the cytochrome b6f complex	F: PetL_1	ECOD (1.6)
M [auth E]	PetL_1	e7r0wE1	A: extended segments	X: PetL subunit of the cytochrome b6f complex (From Topology)	H: PetL subunit of the cytochrome b6f complex (From Topology)	T: PetL subunit of the cytochrome b6f complex	F: PetL_1	ECOD (1.6)
F [auth N]	PetM	e7r0wN1	A: extended segments	X: PetM subunit of the cytochrome b6f complex (From Topology)	H: PetM subunit of the cytochrome b6f complex (From Topology)	T: PetM subunit of the cytochrome b6f complex	F: PetM	ECOD (1.6)
N [auth F]	PetM	e7r0wF1	A: extended segments	X: PetM subunit of the cytochrome b6f complex (From Topology)	H: PetM subunit of the cytochrome b6f complex (From Topology)	T: PetM subunit of the cytochrome b6f complex	F: PetM	ECOD (1.6)
G [auth O]	PetG	e7r0wO1	A: extended segments	X: PetG subunit of the cytochrome b6f complex (From Topology)	H: PetG subunit of the cytochrome b6f complex (From Topology)	T: PetG subunit of the cytochrome b6f complex	F: PetG	ECOD (1.6)
O [auth G]	PetG	e7r0wG1	A: extended segments	X: PetG subunit of the cytochrome b6f complex (From Topology)	H: PetG subunit of the cytochrome b6f complex (From Topology)	T: PetG subunit of the cytochrome b6f complex	F: PetG	ECOD (1.6)
H [auth P]	PetN	e7r0wP1	A: extended segments	X: PetN subunit of the cytochrome b6f complex (From Topology)	H: PetN subunit of the cytochrome b6f complex (From Topology)	T: PetN subunit of the cytochrome b6f complex	F: PetN	ECOD (1.6)
P [auth H]	PetN	e7r0wH1	A: extended segments	X: PetN subunit of the cytochrome b6f complex (From Topology)	H: PetN subunit of the cytochrome b6f complex (From Topology)	T: PetN subunit of the cytochrome b6f complex	F: PetN	ECOD (1.6)
L [auth D]	Rieske_cytochrome_b6f	e7r0wD1	A: beta sandwiches	X: ISP domain (From Topology)	H: ISP domain (From Topology)	T: ISP domain	F: Rieske_cytochrome_b6f	ECOD (1.6)
L [auth D]	Rieske_4	e7r0wD3	A: few secondary structure elements	X: Trm112p-like (From Topology)	H: Trm112p-like (From Topology)	T: Trm112p-like	F: Rieske_4	ECOD (1.6)
L [auth D]	CytB6-F_Fe-S	e7r0wD2	A: extended segments	X: iron-sulfur subunit (ISP) transmembrane anchor (From Topology)	H: iron-sulfur subunit (ISP) transmembrane anchor (From Topology)	T: iron-sulfur subunit (ISP) transmembrane anchor	F: CytB6-F_Fe-S	ECOD (1.6)
Q [auth L]	Rieske_cytochrome_b6f	e7r0wL3	A: beta sandwiches	X: ISP domain (From Topology)	H: ISP domain (From Topology)	T: ISP domain	F: Rieske_cytochrome_b6f	ECOD (1.6)
Q [auth L]	Rieske_4	e7r0wL2	A: few secondary structure elements	X: Trm112p-like (From Topology)	H: Trm112p-like (From Topology)	T: Trm112p-like	F: Rieske_4	ECOD (1.6)
Q [auth L]	CytB6-F_Fe-S	e7r0wL1	A: extended segments	X: iron-sulfur subunit (ISP) transmembrane anchor (From Topology)	H: iron-sulfur subunit (ISP) transmembrane anchor (From Topology)	T: iron-sulfur subunit (ISP) transmembrane anchor	F: CytB6-F_Fe-S	ECOD (1.6)

Domain Annotation: CATH CATH Database Homepage

Chain	Domain	Class	Architecture	Topology	Homology	Provenance Source (Version)
B [auth I]	1.20.810.10	Mainly Alpha	Up-down Bundle	Cytochrome Bc1 Complex	Chain C	CATH (utative)
I [auth A]	1.20.810.10	Mainly Alpha	Up-down Bundle	Cytochrome Bc1 Complex	Chain C	CATH (utative)

Protein Family Annotation Pfam Database Homepage

Chains	Accession	Name	Description	Comments	Source
A [auth X], R [auth V]	PF11061	Cytochrome b6f, subunit Tsr0524-like (Tsr0524-like)	Cytochrome b6f, subunit Tsr0524-like	-	Family
B [auth I], I [auth A]	PF00033	Cytochrome b/b6/petB (Cytochrome_B)	Cytochrome b/b6/petB		Domain
C [auth J], J [auth B]	PF00032	Cytochrome b(C-terminal)/b6/petD (Cytochrom_B_C)	Cytochrome b(C-terminal)/b6/petD		Domain
D [auth K], K [auth C]	PF16639	Apocytochrome F, N-terminal (Apocytochr_F_N)	Apocytochrome F, N-terminal	This is the N-terminal domain of cytochrome f. It is a soluble lumen-side domain [1].	Domain
D [auth K], K [auth C]	PF01333	Apocytochrome F, C-terminal (Apocytochr_F_C)	Apocytochrome F, C-terminal	This is a sub-family of cytochrome C. See Pfam:PF00034.	Domain
F [auth N], N [auth F]	PF08041	PetM family of cytochrome b6f complex subunit 7 (PetM)	PetM family of cytochrome b6f complex subunit 7	-	Family
G [auth O], O [auth G]	PF02529	Cytochrome B6-F complex subunit 5 (PetG)	Cytochrome B6-F complex subunit 5	-	Family
H [auth P], P [auth H]	PF03742	PetN (PetN)	PetN	-	Family
L [auth D], Q [auth L]	PF00355	Rieske [2Fe-2S] domain (Rieske)	Rieske [2Fe-2S] domain	The rieske domain has a [2Fe-2S] centre. Two conserved cysteines coordinate one Fe ion, while the other Fe ion is coordinated by two conserved histidines. In hyperthermophilic archaea there is a SKTPCX(2-3)C motif at the C-terminus. The cysteines in ...	The rieske domain has a [2Fe-2S] centre. Two conserved cysteines coordinate one Fe ion, while the other Fe ion is coordinated by two conserved histidines. In hyperthermophilic archaea there is a SKTPCX(2-3)C motif at the C-terminus. The cysteines in this motif form a disulphide bridge, which stabilises the protein [4].	Domain

Gene Ontology: Gene Product Annotation Gene Ontology Database Homepage

Chains	Polymer	Molecular Function	Biological Process	Cellular Component
A [auth X], R [auth V]	Uncharacterized protein Cp097, conserved in cyanobacteria	-	-	-
B [auth I], I [auth A]	Cytochrome b6	oxidoreductase activity catalytic activity electron transfer activity electron transporter, transferring electrons within cytochrome b6/f complex of photosystem II activity cation binding ion binding binding metal ion binding small molecule binding	cellular respiration energy derivation by oxidation of organic compounds respiratory electron transport chain electron transport chain metabolic process cellular process generation of precursor metabolites and energy photosynthesis	protein-containing complex intracellular anatomical structure cytochrome complex catalytic complex intracellular membraneless organelle intracellular organelle cellular anatomical structure cytochrome b6f complex organelle membraneless organelle thylakoid plasma membrane-derived chromatophore membrane membrane plasma membrane protein-containing complex intracellular anatomical structure cytochrome complex catalytic complex intracellular membraneless organelle intracellular organelle cellular anatomical structure cytochrome b6f complex organelle membraneless organelle thylakoid plasma membrane-derived chromatophore membrane membrane plasma membrane plasma membrane-derived chromatophore thylakoid membrane cell periphery plasma membrane-derived thylakoid membrane plasma membrane region bacterial thylakoid cytoplasm photosynthetic membrane
C [auth J], J [auth B]	Cytochrome b6-f complex subunit 4	oxidoreductase activity catalytic activity electron transfer activity electron transporter, transferring electrons within cytochrome b6/f complex of photosystem II activity electron transporter, transferring electrons within the cyclic electron transport pathway of photosynthesis activity	transport proton transmembrane transport monoatomic ion transmembrane transport inorganic ion transmembrane transport establishment of localization inorganic cation transmembrane transport transmembrane transport monoatomic cation transmembrane transport localization monoatomic ion transport cellular process monoatomic cation transport photosynthesis photosynthesis, light reaction transport proton transmembrane transport monoatomic ion transmembrane transport inorganic ion transmembrane transport establishment of localization inorganic cation transmembrane transport transmembrane transport monoatomic cation transmembrane transport localization monoatomic ion transport cellular process monoatomic cation transport photosynthesis photosynthesis, light reaction photosynthetic electron transport chain electron transport chain metabolic process generation of precursor metabolites and energy	protein-containing complex intracellular anatomical structure cytochrome complex catalytic complex intracellular membraneless organelle intracellular organelle cellular anatomical structure cytochrome b6f complex organelle membraneless organelle thylakoid plasma membrane-derived chromatophore membrane membrane plasma membrane protein-containing complex intracellular anatomical structure cytochrome complex catalytic complex intracellular membraneless organelle intracellular organelle cellular anatomical structure cytochrome b6f complex organelle membraneless organelle thylakoid plasma membrane-derived chromatophore membrane membrane plasma membrane plasma membrane-derived chromatophore thylakoid membrane cell periphery plasma membrane-derived thylakoid membrane plasma membrane region bacterial thylakoid cytoplasm photosynthetic membrane
D [auth K], K [auth C]	Cytochrome f	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 metabolic process cellular process	protein-containing complex intracellular anatomical structure cytochrome complex catalytic complex intracellular membraneless organelle intracellular organelle cellular anatomical structure cytochrome b6f complex organelle membraneless organelle thylakoid plasma membrane-derived chromatophore membrane membrane plasma membrane protein-containing complex intracellular anatomical structure cytochrome complex catalytic complex intracellular membraneless organelle intracellular organelle cellular anatomical structure cytochrome b6f complex organelle membraneless organelle thylakoid plasma membrane-derived chromatophore membrane membrane plasma membrane plasma membrane-derived chromatophore thylakoid membrane cell periphery plasma membrane-derived thylakoid membrane plasma membrane region bacterial thylakoid cytoplasm photosynthetic membrane
E [auth M], M [auth E]	Cytochrome B6	-	-	-
F [auth N], N [auth F]	Cytochrome b6-f complex subunit 7	electron transfer activity	photosynthesis metabolic process cellular process	protein-containing complex intracellular anatomical structure cytochrome complex catalytic complex intracellular membraneless organelle intracellular organelle cellular anatomical structure cytochrome b6f complex organelle membraneless organelle thylakoid plasma membrane-derived chromatophore membrane membrane plasma membrane protein-containing complex intracellular anatomical structure cytochrome complex catalytic complex intracellular membraneless organelle intracellular organelle cellular anatomical structure cytochrome b6f complex organelle membraneless organelle thylakoid plasma membrane-derived chromatophore membrane membrane plasma membrane plasma membrane-derived chromatophore thylakoid membrane cell periphery plasma membrane-derived thylakoid membrane plasma membrane region bacterial thylakoid cytoplasm photosynthetic membrane
G [auth O], O [auth G]	Cytochrome b6-f complex subunit 5	electron transfer activity electron transporter, transferring electrons within cytochrome b6/f complex of photosystem II activity	photosynthesis metabolic process cellular process cytochrome complex assembly cellular component organization cellular component biogenesis cellular component assembly protein-containing complex organization protein-containing complex assembly cellular component organization or biogenesis	protein-containing complex intracellular anatomical structure cytochrome complex catalytic complex intracellular membraneless organelle intracellular organelle cellular anatomical structure cytochrome b6f complex organelle membraneless organelle thylakoid plasma membrane-derived chromatophore membrane membrane plasma membrane protein-containing complex intracellular anatomical structure cytochrome complex catalytic complex intracellular membraneless organelle intracellular organelle cellular anatomical structure cytochrome b6f complex organelle membraneless organelle thylakoid plasma membrane-derived chromatophore membrane membrane plasma membrane plasma membrane-derived chromatophore thylakoid membrane cell periphery plasma membrane-derived thylakoid membrane plasma membrane region bacterial thylakoid cytoplasm photosynthetic membrane
H [auth P], P [auth H]	Cytochrome b6-f complex subunit 8	electron transfer activity electron transporter, transferring electrons within cytochrome b6/f complex of photosystem II activity	photosynthesis metabolic process cellular process cytochrome complex assembly cellular component organization cellular component biogenesis cellular component assembly protein-containing complex organization protein-containing complex assembly cellular component organization or biogenesis	protein-containing complex intracellular anatomical structure cytochrome complex catalytic complex intracellular membraneless organelle intracellular organelle cellular anatomical structure cytochrome b6f complex organelle membraneless organelle thylakoid plasma membrane-derived chromatophore membrane membrane plasma membrane protein-containing complex intracellular anatomical structure cytochrome complex catalytic complex intracellular membraneless organelle intracellular organelle cellular anatomical structure cytochrome b6f complex organelle membraneless organelle thylakoid plasma membrane-derived chromatophore membrane membrane plasma membrane plasma membrane-derived chromatophore thylakoid membrane cell periphery plasma membrane-derived thylakoid membrane plasma membrane region bacterial thylakoid cytoplasm photosynthetic membrane
L [auth D], Q [auth L]	Rieske domain, PetC	oxidoreductase activity catalytic activity iron-sulfur cluster binding 2 iron, 2 sulfur cluster binding binding metal cluster binding small molecule binding electron transfer activity electron transporter, transferring electrons within cytochrome b6/f complex of photosystem II activity oxidoreductase activity, acting on diphenols and related substances as donors primary active transmembrane transporter activity plastoquinol--plastocyanin reductase activity oxidoreduction-driven active transmembrane transporter activity active transmembrane transporter activity oxidoreductase activity catalytic activity iron-sulfur cluster binding 2 iron, 2 sulfur cluster binding binding metal cluster binding small molecule binding electron transfer activity electron transporter, transferring electrons within cytochrome b6/f complex of photosystem II activity oxidoreductase activity, acting on diphenols and related substances as donors primary active transmembrane transporter activity plastoquinol--plastocyanin reductase activity oxidoreduction-driven active transmembrane transporter activity active transmembrane transporter activity oxidoreductase activity, acting on diphenols and related substances as donors, with copper protein as acceptor transporter activity transmembrane transporter activity cation binding ion binding metal ion binding	photosynthesis metabolic process cellular process	intracellular anatomical structure plasma membrane-derived chromatophore membrane membrane plasma membrane intracellular membraneless organelle plasma membrane-derived chromatophore thylakoid membrane intracellular organelle cell periphery cellular anatomical structure plasma membrane-derived thylakoid membrane organelle membraneless organelle plasma membrane region intracellular anatomical structure plasma membrane-derived chromatophore membrane membrane plasma membrane intracellular membraneless organelle plasma membrane-derived chromatophore thylakoid membrane intracellular organelle cell periphery cellular anatomical structure plasma membrane-derived thylakoid membrane organelle membraneless organelle plasma membrane region bacterial thylakoid cytoplasm photosynthetic membrane thylakoid

InterPro: Protein Family Classification InterPro Database Homepage

Chains	Accession	Name	Type
A [auth X], R [auth V]	IPR021291	Cytochrome b6f, subunit Tsr0524-like	Family
B [auth I], I [auth A]	IPR027387	Cytochrome b/b6-like domain superfamily	Homologous Superfamily
B [auth I], I [auth A]	IPR023530	Cytochrome b6, PetB	Family
B [auth I], I [auth A]	IPR016174	Di-haem cytochrome, transmembrane	Homologous Superfamily
B [auth I], I [auth A]	IPR048259	Cytochrome b/b6, N-terminal domain, eukaryotic/bacterial	Domain
B [auth I], I [auth A]	IPR005797	Cytochrome b/b6, N-terminal domain	Domain
C [auth J], J [auth B]	IPR036150	Cytochrome b/b6, C-terminal domain superfamily	Homologous Superfamily
C [auth J], J [auth B]	IPR005798	Cytochrome b/b6, C-terminal	Domain
C [auth J], J [auth B]	IPR005870	Cytochrome b6/f complex, subunit IV	Family
C [auth J], J [auth B]	IPR048260	Cytochrome b/b6, C-terminal domain, eukaryotic/bacterial	Domain
D [auth K], K [auth C]	IPR002325	Cytochrome f	Family
D [auth K], K [auth C]	IPR011054	Rudiment single hybrid motif	Homologous Superfamily
D [auth K], K [auth C]	IPR036826	Cytochrome f large domain superfamily	Homologous Superfamily
D [auth K], K [auth C]	IPR024058	Cytochrome f transmembrane anchor	Homologous Superfamily
D [auth K], K [auth C]	IPR024094	Cytochrome f large domain	Domain
F [auth N], N [auth F]	IPR012595	PetM of cytochrome b6/f complex subunit 7	Family
G [auth O], O [auth G]	IPR003683	Cytochrome b6/f complex, subunit 5	Family
G [auth O], O [auth G]	IPR036099	Cytochrome b6/f complex, subunit 5 superfamily	Homologous Superfamily
H [auth P], P [auth H]	IPR036143	Cytochrome b6-f complex, subunit 8 superfamily	Homologous Superfamily
H [auth P], P [auth H]	IPR005497	Cytochrome b6-f complex, subunit 8	Family
L [auth D], Q [auth L]	IPR036922	Rieske [2Fe-2S] iron-sulphur domain superfamily	Homologous Superfamily
L [auth D], Q [auth L]	IPR000595	Cyclic nucleotide-binding domain	Domain
L [auth D], Q [auth L]	IPR014349	Rieske iron-sulphur protein	Family
L [auth D], Q [auth L]	IPR017941	Rieske [2Fe-2S] iron-sulphur domain	Domain
L [auth D], Q [auth L]	IPR005805	Rieske iron-sulphur protein, C-terminal	Domain
L [auth D], Q [auth L]	IPR023960	Cytochrome b6-f complex iron-sulfur subunit	Family

Membrane Protein Annotation: OPM OPM Database Homepage

Chains	External Link	Type	Class	Superfamily	Family
B [auth I], C [auth J], D [auth K], F [auth N], G [auth O] B [auth I], C [auth J], D [auth K], F [auth N], G [auth O], H [auth P], I [auth A], J [auth B], K [auth C], L [auth D], N [auth F], O [auth G], P [auth H], Q [auth L]	OPM	Transmembrane	Alpha-helical polytopic	Electron transport chain complex III (bc1 and b6f) superfamily	Cytochrome bc1 and b6f complexes

Membrane Protein Annotation: PDBTM PDBTM Database Homepage

Chains	External Link	Comment
B [auth I], C [auth J], D [auth K], F [auth N], G [auth O] B [auth I], C [auth J], D [auth K], F [auth N], G [auth O], H [auth P], I [auth A], J [auth B], K [auth C], L [auth D], N [auth F], O [auth G], P [auth H], Q [auth L]	PDBTM	Annotated as membrane protein by PDBTM