Annotations: 4AIV

Crystal Structure of putative NADH-dependent nitrite reductase small subunit from Mycobacterium tuberculosis

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

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

Chains	Domain Info	Class	Fold	Superfamily	Family	Domain	Species	Provenance Source (Version)
A	d4aiva_	All beta proteins	ISP domain	ISP domain	automated matches	automated matches	(Mycobacterium tuberculosis H37Rv ) [TaxId: 83332 ],	SCOPe (2.08)

Domain Annotation: SCOP2 Classification SCOP2 Database Homepage

Chains	Type	Family Name	Domain Identifier	Family Identifier	Provenance Source (Version)
A	SCOP2 Family	NirD-like	8075322	4001733	SCOP2 (2022-06-29)
A	SCOP2 Superfamily	ISP domain	8075323	3000233	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	Aminotran_1_2	e4aivA5	A: beta barrels	X: Fusion glycoprotein F2	H: RIFT-related	T: double psi	F: Aminotran_1_2	ECOD (v294.2)

Domain Annotation: CATH CATH Database Homepage

Chain	Domain	Class	Architecture	Topology	Homology	Provenance Source (Version)
A	2.102.10.10	Mainly Beta	3-layer Sandwich	Rieske Iron-sulfur Protein	Rieske [2Fe-2S] iron-sulphur domain	CATH (4.3.0)

Protein Family Annotation Pfam Database Homepage

Chains	Accession	Name	Description	Comments	Source
A	PF13806	Rieske-like [2Fe-2S] domain (Rieske_2)	Rieske-like [2Fe-2S] domain		Domain

Gene Ontology: Gene Product Annotation Gene Ontology Database Homepage

Chains	Polymer	Molecular Function	Biological Process	Cellular Component
A	PROBABLE NITRITE REDUCTASE [NAD(P)H] SMALL SUBUNIT NIRD	active transmembrane transporter activity efflux transmembrane transporter activity nitrite efflux transmembrane transporter activity transporter activity transmembrane transporter activity nitrite transmembrane transporter activity secondary active transmembrane transporter activity nitrite reductase (NADH) activity oxidoreductase activity, acting on other nitrogenous compounds as donors, with NAD or NADP as acceptor oxidoreductase activity nitrite reductase [NAD(P)H] activity oxidoreductase activity, acting on other nitrogenous compounds as donors nitrite reductase activity catalytic activity active transmembrane transporter activity efflux transmembrane transporter activity nitrite efflux transmembrane transporter activity transporter activity transmembrane transporter activity nitrite transmembrane transporter activity secondary active transmembrane transporter activity nitrite reductase (NADH) activity oxidoreductase activity, acting on other nitrogenous compounds as donors, with NAD or NADP as acceptor oxidoreductase activity nitrite reductase [NAD(P)H] activity oxidoreductase activity, acting on other nitrogenous compounds as donors nitrite reductase activity catalytic activity iron-sulfur cluster binding 2 iron, 2 sulfur cluster binding binding metal cluster binding small molecule binding	nitrate assimilation nitrogen cycle metabolic process oxoacid metabolic process metabolic process cellular process small molecule metabolic process organic acid metabolic process nitrate metabolic process reactive nitrogen species metabolic process	cellular anatomical structure intracellular anatomical structure cytoplasm

InterPro: Protein Family Classification InterPro Database Homepage

Chains	Accession	Name	Type
A	IPR017881	Nitrite reductase (NADH) small subunit	Family
A	IPR012748	Rieske-like [2Fe-2S] domain, NirD-type	Domain
A	IPR036922	Rieske [2Fe-2S] iron-sulphur domain superfamily	Homologous Superfamily

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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.