Annotations: 6F0K

Domain Annotation: ECOD Classification ECOD Database Homepage

Chains	Family Name	Domain Identifier	Architecture	Possible Homology	Homology	Topology	Family	Provenance Source (Version)
E	VP4_haemagglut	e6f0kE1	A: a/b three-layered sandwiches	X: Phosphorylase/hydrolase-like	H: Peptidyl-tRNA hydrolase-like	T: Peptidyl-tRNA hydrolase-like	F: VP4_haemagglut	ECOD (v294.1)
C	Serpin	e6f0kC01	A: a/b three-layered sandwiches	X: Rossmann-like	H: P-loop domains-related	T: P-loop containing nucleoside triphosphate hydrolases	F: Serpin	ECOD (v294.1)

Protein Family Annotation Pfam Database Homepage

Chains	Accession	Name	Description	Comments	Source
E	PF13442	Cytochrome C oxidase, cbb3-type, subunit III (Cytochrome_CBB3)	Cytochrome C oxidase, cbb3-type, subunit III		Domain
D	PF11821	Alternative complex III, ActD subunit (ActD)	Alternative complex III, ActD subunit	-	Family
C	PF03916	Polysulphide reductase, NrfD (NrfD)	Polysulphide reductase, NrfD	-	Family
B	PF13247	4Fe-4S dicluster domain (Fer4_11)	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
A	PF14522	Cytochrome c7 and related cytochrome c (Cytochrome_C7)	Cytochrome c7 and related cytochrome c	-	Family

Gene Ontology: Gene Product Annotation Gene Ontology Database Homepage

Chains	Polymer	Molecular Function	Biological Process	Cellular Component
G [auth H]	ActH	-	-	-
F	ActF	-	-	-
E	Quinol:cytochrome c oxidoreductase monoheme cytochrome subunit	binding tetrapyrrole binding heme binding electron transfer activity cation binding ion binding metal ion binding small molecule binding	-	-
D	ActD	-	-	-
C	Polysulphide reductase NrfD	-	-	cell periphery cellular anatomical structure plasma membrane membrane
B	Fe-S-cluster-containing hydrogenase	-	-	-
A	Cytochrome c family protein	-	-	-

InterPro: Protein Family Classification InterPro Database Homepage

Chains	Accession	Name	Type
E	IPR036909	Cytochrome c-like domain superfamily	Homologous Superfamily
E	IPR009056	Cytochrome c-like domain	Domain
D	IPR021776	Alternative complex III, ActD subunit	Family
C	IPR005614	NrfD-like	Family
B	IPR017896	4Fe-4S ferredoxin-type, iron-sulphur binding domain	Domain
B	IPR030948	TAT-variant-translocation signal domain	Domain
A	IPR029467	Cytochrome c7-like	Domain
A	IPR036280	Multiheme cytochrome superfamily	Homologous Superfamily

Membrane Protein Annotation: OPM OPM Database Homepage

Chains	External Link	Type	Class	Superfamily	Family
A, C, D, F	OPM	Transmembrane	Alpha-helical polytopic	Electron transport chain complex II superfamily	Polysulfide reductase

Membrane Protein Annotation: PDBTM PDBTM Database Homepage

Chains	External Link	Comment
A, C, D, F	PDBTM	Annotated as membrane protein by PDBTM

Membrane Protein Annotation: MemProtMD MemProtMD Database Homepage

Chains	External Link	Comment
A, C, D, F	MemProtMD	Annotated as membrane protein by MemProtMD

Membrane Protein Annotation: mpstruc mpstruc Database Homepage

Chains	Resource Link	Group	Subgroup	Protein
A, C, D, F	mpstruc	TRANSMEMBRANE PROTEINS: ALPHA-HELICAL	Electron Transport Chain Complexes: Complex III (Cytochrome bc₁)	quinol:cytochrome c/HiPIP oxidoreductase (alternative complex III)

RCSB PDB Core Operations are funded by the U.S. National Science Foundation (DBI-2321666), the US Department of Energy (DE-SC0019749), and the National Cancer Institute, National Institute of Allergy and Infectious Diseases, and National Institute of General Medical Sciences of the National Institutes of Health under grant R01GM157729. RCSB PDB uses resources of the National Energy Research Scientific Computing Center (NERSC), a Department of Energy User Facility.