Annotations: 1BQ5

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

Chains	Domain Info	Class	Fold	Superfamily	Family	Domain	Species	Provenance Source (Version)
A	d1bq5a2	All beta proteins	Cupredoxin-like	Cupredoxins	Multidomain cupredoxins	Nitrite reductase, NIR, C-terminal domain	(Achromobacter xylosoxidans ) [TaxId: 85698 ],	SCOPe (2.08)
A	d1bq5a1	All beta proteins	Cupredoxin-like	Cupredoxins	Multidomain cupredoxins	Nitrite reductase, NIR, N-terminal domain	(Achromobacter xylosoxidans ) [TaxId: 85698 ],	SCOPe (2.08)

Domain Annotation: ECOD Classification ECOD Database Homepage

Chains	Family Name	Domain Identifier	Architecture	Possible Homology	Homology	Topology	Family	Provenance Source (Version)
A	Cu-oxidase_2_2	e1bq5A2	A: beta sandwiches	X: Cupredoxin-like	H: Cupredoxin-related (From Topology)	T: Cupredoxin-related	F: Cu-oxidase_2_2	ECOD (1.6)
A	Cu-oxidase_3_1	e1bq5A1	A: beta sandwiches	X: Cupredoxin-like	H: Cupredoxin-related (From Topology)	T: Cupredoxin-related	F: Cu-oxidase_3_1	ECOD (1.6)

Domain Annotation: CATH CATH Database Homepage

Chain	Domain	Class	Architecture	Topology	Homology	Provenance Source (Version)
A	2.60.40.420	Mainly Beta	Sandwich	Immunoglobulin-like	Cupredoxins - blue copper proteins	CATH (4.3.0)

Protein Family Annotation Pfam Database Homepage

Chains	Accession	Name	Description	Comments	Source
A	PF00394	Multicopper oxidase (Cu-oxidase)	Multicopper oxidase	Many of the proteins in this family contain multiple similar copies of this plastocyanin-like domain.	Domain
A	PF07732	Multicopper oxidase (Cu-oxidase_3)	Multicopper oxidase	This entry contains many divergent copper oxidase-like domains that are not recognised by the Pfam:PF00394 model.	Domain

Gene Ontology: Gene Product Annotation Gene Ontology Database Homepage

Chains	Polymer	Molecular Function	Biological Process	Cellular Component
A	NITRITE REDUCTASE	cation binding transition metal ion binding copper ion binding ion binding binding metal ion binding small molecule binding oxidoreductase activity, acting on other nitrogenous compounds as donors, cytochrome as acceptor oxidoreductase activity oxidoreductase activity, acting on other nitrogenous compounds as donors nitrite reductase (NO-forming) activity nitrite reductase activity catalytic activity	nitrogen cycle metabolic process denitrification pathway metabolic process nitrate assimilation oxoacid metabolic process cellular metabolic process small molecule metabolic process cellular process organic acid metabolic process nitrate metabolic process reactive nitrogen species metabolic process	periplasmic space cellular anatomical entity

InterPro: Protein Family Classification InterPro Database Homepage

Chains	Accession	Name	Type
A	IPR008972	Cupredoxin	Homologous Superfamily
A	IPR001117	Multicopper oxidase, second cupredoxin domain	Domain
A	IPR045087	Multicopper oxidase	Family
A	IPR001287	Nitrite reductase, copper-type	Family
A	IPR011707	Multicopper oxidase-like, N-terminal	Domain

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.