Annotations: 2P0B

Domain Annotation: SCOP2 Classification SCOP2 Database Homepage

Chains	Type	Family Name	Domain Identifier	Family Identifier	Provenance Source (Version)
A	SCOP2 Family	NrfB-like	8045451	4004477	SCOP2 (2022-06-29)
A	SCOP2 Superfamily	Di-heme elbow motif	8090732	3000145	SCOP2 (2022-06-29)
A	SCOP2 Superfamily	Di-heme elbow motif	8090731	3000145	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)
A	Cytochrom_c3_2_1	e2p0bA1	A: few secondary structure elements	X: Multiheme cytochromes	H: Di-heme elbow motif (From Topology)	T: Di-heme elbow motif	F: Cytochrom_c3_2_1	ECOD (1.6)

Protein Family Annotation Pfam Database Homepage

Chains	Accession	Name	Description	Comments	Source
A	PF22678	Cytochrome c-type protein NrfB-like (Cytochrom_c_NrfB-like)	Cytochrome c-type protein NrfB-like	This entry includes Cytochrome c-type protein NrfB and similar proteins, which plays a role in nitrite reduction. These proteins contain several copies of the CXXCH haem-binding motif [1-5].	Domain

Gene Ontology: Gene Product Annotation Gene Ontology Database Homepage

Chains	Polymer	Molecular Function	Biological Process	Cellular Component
A	Cytochrome c-type protein nrfB	oxidoreductase activity catalytic activity oxidoreductase activity, acting on other nitrogenous compounds as donors, cytochrome as acceptor nitrite reductase (cytochrome, ammonia-forming) activity oxidoreductase activity, acting on other nitrogenous compounds as donors nitrite reductase activity binding tetrapyrrole binding heme binding electron transfer activity cation binding ion binding metal ion binding small molecule binding	anaerobic electron transport chain 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 anaerobic respiration	cellular anatomical structure outer membrane-bounded periplasmic space cell envelope periplasmic space

InterPro: Protein Family Classification InterPro Database Homepage

Chains	Accession	Name	Type
A	IPR036280	Multiheme cytochrome superfamily	Homologous Superfamily
A	IPR017564	Cytochrome c-type protein NrfB	Family
A	IPR053875	Cytochrome c-type protein NrfB-like domain	Domain
A	IPR051829	Multiheme Cytochrome Electron Transporters	Family

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.