Macromolecule Annotations for the Entities in PDB 1Q16

Protein Family Annotation Pfam Database Homepage

Chains Pfam Accession Pfam Identifier Pfam Description Type Source
A PF14710 Nitr_red_alph_N Respiratory nitrate reductase alpha N-terminal Domain This is the N-terminal tail of the respiratory nitrate reductase alpha chain. The nitrate reductase complex is a dimer of heterotrimers each consisting of an alpha, beta and gamma chain. The N-terminal tail of the alpha chain interacts with the beta chain and contributes to the stability of the heterotrimer [1]. PFAM PF14710
C PF02665 Nitrate_red_gam Nitrate reductase gamma subunit Family
B PF14711 Nitr_red_bet_C Respiratory nitrate reductase beta C-terminal Domain This domain occurs near the C-terminus of the respiratory nitrate reductase beta chain. The nitrate reductase complex is a dimer of heterotrimers each consisting of an alpha, beta and gamma chain. This domain plays a role in the interactions between subunits and shielding of the Fe-S clusters [1] PFAM PF14711
A PF01568 Molydop_binding Molydopterin dinucleotide binding domain 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 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]. PFAM PF01568
A PF00384 Molybdopterin Molybdopterin oxidoreductase Family
B PF13247 Fer4_11 4Fe-4S dicluster domain 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 contains two 4Fe4S clusters. PFAM PF13247

Gene Product Annotation Gene Ontology Consortium Homepage

Chains Polymer Molecular Function Biological Process Cellular Component
A Respiratory nitrate reductase 1 alpha chain (1Q16:A)
B Respiratory nitrate reductase 1 beta chain (1Q16:B)
C Respiratory nitrate reductase 1 gamma chain (1Q16:C)

Protein Modification Annotation

Type PDB Residue Nr. Description