Annotations: 9PXT

Cryo-EM structure of NapA, the periplasmic nitrate reductase from Campylobacter jejuni

External Resource: Annotation

Protein Family Annotation
Gene Ontology: Gene Product Annotation
InterPro: Protein Family Classification

Protein Family Annotation Pfam Database Homepage

Chains	Accession	Name	Description	Comments	Source
A	PF01568	Molydopterin dinucleotide binding domain (Molydop_binding)	Molydopterin dinucleotide binding domain	This domain is found in various molybdopterin - containing oxidoreductases and tungsten formylmethanofuran dehydrogenase subunit d (FwdD) and molybdenum formylmethanofuran dehydrogenase subunit (FmdD); where the domain constitutes almost the entire s ...	This domain is found in various molybdopterin - containing oxidoreductases and tungsten formylmethanofuran dehydrogenase subunit d (FwdD) and molybdenum formylmethanofuran dehydrogenase subunit (FmdD); where the domain constitutes almost the entire subunit. The formylmethanofuran dehydrogenase catalyses the first step in methane formation from CO2 in methanogenic archaea and has a molybdopterin dinucleotide cofactor [1]. This domain corresponds to the C-terminal domain IV in dimethyl sulfoxide (DMSO)reductase which interacts with the 2-amino pyrimidone ring of both molybdopterin guanine dinucleotide molecules [2].	Domain
A	PF00384	Molybdopterin oxidoreductase (Molybdopterin)	Molybdopterin oxidoreductase		Domain

Gene Ontology: Gene Product Annotation Gene Ontology Database Homepage

Chains	Polymer	Molecular Function	Biological Process	Cellular Component
A	Periplasmic nitrate reductase	cation binding transition metal ion binding iron ion binding ion binding binding metal ion binding small molecule binding molybdenum ion binding nitrate reductase (cytochrome) activity nitrate reductase activity oxidoreductase activity, acting on a heme group of donors, nitrogenous group as acceptor oxidoreductase activity oxidoreductase activity, acting on other nitrogenous compounds as donors oxidoreductase activity, acting on a heme group of donors cation binding transition metal ion binding iron ion binding ion binding binding metal ion binding small molecule binding molybdenum ion binding nitrate reductase (cytochrome) activity nitrate reductase activity oxidoreductase activity, acting on a heme group of donors, nitrogenous group as acceptor oxidoreductase activity oxidoreductase activity, acting on other nitrogenous compounds as donors oxidoreductase activity, acting on a heme group of donors catalytic activity molybdopterin cofactor binding iron-sulfur cluster binding 4 iron, 4 sulfur cluster binding metal cluster binding electron transfer activity	nitrate assimilation nitrogen cycle metabolic process oxoacid metabolic process metabolic process cellular process small molecule metabolic process nitrate metabolic process reactive nitrogen species metabolic process cellular respiration energy derivation by oxidation of organic compounds generation of precursor metabolites and energy Mo-molybdopterin cofactor biosynthetic process Mo-molybdopterin cofactor metabolic process primary metabolic process nitrate assimilation nitrogen cycle metabolic process oxoacid metabolic process metabolic process cellular process small molecule metabolic process nitrate metabolic process reactive nitrogen species metabolic process cellular respiration energy derivation by oxidation of organic compounds generation of precursor metabolites and energy Mo-molybdopterin cofactor biosynthetic process Mo-molybdopterin cofactor metabolic process primary metabolic process prosthetic group metabolic process molybdopterin cofactor biosynthetic process biosynthetic process organophosphate metabolic process organophosphate biosynthetic process molybdopterin cofactor metabolic process protein metabolic process macromolecule metabolic process phosphorus metabolic process	cellular anatomical structure membrane protein-containing complex catalytic complex nitrate reductase complex oxidoreductase complex extracellular region periplasmic space

InterPro: Protein Family Classification InterPro Database Homepage

Chains	Accession	Name	Type
A	IPR006963	Molybdopterin oxidoreductase, 4Fe-4S domain	Domain
A	IPR006657	Molybdopterin dinucleotide-binding domain	Domain
A	IPR006656	Molybdopterin oxidoreductase	Domain
A	IPR009010	Aspartate decarboxylase-like domain superfamily	Homologous Superfamily
A	IPR010051	Periplasmic nitrate reductase, large subunit	Family
A	IPR041957	Nitrate reductase NapA-like, molybdopterin-binding domain	Domain
A	IPR027467	Molybdopterin oxidoreductase, molybdopterin cofactor binding site	Binding Site
A	IPR019546	Twin-arginine translocation pathway, signal sequence, bacterial/archaeal	Conserved Site