8CFF

Crystal structure of arsenite oxidase from Alcaligenes faecalis (Af Aio) bound to arsenite

External Resource: Annotation

Domain Annotation: SCOP2 Classification
Protein Family Annotation
Gene Ontology: Gene Product Annotation
InterPro: Protein Family Classification

Domain Annotation: SCOP2 Classification SCOP2 Database Homepage

Chains	Type	Family Name	Domain Identifier	Family Identifier	Provenance Source (Version)
A	SCOP2B Superfamily	ADC-like	8042518	3001132	SCOP2B (2022-06-29)
A	SCOP2B Superfamily	Formate dehydrogenase/DMSO reductase, domains 1-3	8033012	3001453	SCOP2B (2022-06-29)
C	SCOP2B Superfamily	Formate dehydrogenase/DMSO reductase, domains 1-3	8033012	3001453	SCOP2B (2022-06-29)
C	SCOP2B Superfamily	ADC-like	8042518	3001132	SCOP2B (2022-06-29)
E	SCOP2B Superfamily	ADC-like	8042518	3001132	SCOP2B (2022-06-29)
E	SCOP2B Superfamily	Formate dehydrogenase/DMSO reductase, domains 1-3	8033012	3001453	SCOP2B (2022-06-29)
G	SCOP2B Superfamily	ADC-like	8042518	3001132	SCOP2B (2022-06-29)
G	SCOP2B Superfamily	Formate dehydrogenase/DMSO reductase, domains 1-3	8033012	3001453	SCOP2B (2022-06-29)
B	SCOP2B Superfamily	ISP domain	8041549	3000233	SCOP2B (2022-06-29)
D	SCOP2B Superfamily	ISP domain	8041549	3000233	SCOP2B (2022-06-29)
F	SCOP2B Superfamily	ISP domain	8041549	3000233	SCOP2B (2022-06-29)
H	SCOP2B Superfamily	ISP domain	8041549	3000233	SCOP2B (2022-06-29)

Protein Family Annotation Pfam Database Homepage

Chains	Accession	Name	Description	Comments	Source
A, C, E, G	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, C, E, G	PF18465	Rieske 3Fe-4S (Rieske_3)	Rieske 3Fe-4S	This domain is comprised of the iron-sulphur cluster and Rieske subunit found in the large subunit of arsenite oxidase. Arsenite oxidase is a 100 kDa molybdenum- and iron-sulfur-containing protein located on the outer surface of the inner membrane of ...	This domain is comprised of the iron-sulphur cluster and Rieske subunit found in the large subunit of arsenite oxidase. Arsenite oxidase is a 100 kDa molybdenum- and iron-sulfur-containing protein located on the outer surface of the inner membrane of Gram-negative organisms. The large subunit of arsenite oxidase is similar to other members of the dimethylsulfoxide (DMSO) reductase family of molybdenum enzymes. The large subunit of arsenite oxidase is divided into four domains, with domain I binding the [3Fe-4S] cluster . Domain I, consists of three antiparallel beta sheets and six helices. The [3Fe-4S] cluster is coordinated by the motif Cys21-X2-Cys24-X3-Cys28 near the interface with domains III and IV. A large, flattened funnel-like cavity bounded by domains I, II, and III leads to the molybdenum center Pfam:PF00384 located near the center of the molecule [1].	Domain
A, C, E, G	PF00384	Molybdopterin oxidoreductase (Molybdopterin)	Molybdopterin oxidoreductase		Domain
B, D, F, H	PF00355	Rieske [2Fe-2S] domain (Rieske)	Rieske [2Fe-2S] domain	The rieske domain has a [2Fe-2S] centre. Two conserved cysteines coordinate one Fe ion, while the other Fe ion is coordinated by two conserved histidines. In hyperthermophilic archaea there is a SKTPCX(2-3)C motif at the C-terminus. The cysteines in ...	The rieske domain has a [2Fe-2S] centre. Two conserved cysteines coordinate one Fe ion, while the other Fe ion is coordinated by two conserved histidines. In hyperthermophilic archaea there is a SKTPCX(2-3)C motif at the C-terminus. The cysteines in this motif form a disulphide bridge, which stabilises the protein [4].	Domain

Gene Ontology: Gene Product Annotation Gene Ontology Database Homepage

Chains	Polymer	Molecular Function	Biological Process	Cellular Component
A, C, E, G	Arsenite oxidase subunit AioA	oxidoreductase activity, acting on phosphorus or arsenic in donors, with a copper protein as acceptor arsenate reductase (azurin) activity oxidoreductase activity catalytic activity oxidoreductase activity, acting on phosphorus or arsenic in donors oxidoreductase activity, acting on NAD(P)H NADH dehydrogenase activity iron-sulfur cluster binding binding 3 iron, 4 sulfur cluster binding metal cluster binding small molecule binding molybdopterin cofactor binding cation binding oxidoreductase activity, acting on phosphorus or arsenic in donors, with a copper protein as acceptor arsenate reductase (azurin) activity oxidoreductase activity catalytic activity oxidoreductase activity, acting on phosphorus or arsenic in donors oxidoreductase activity, acting on NAD(P)H NADH dehydrogenase activity iron-sulfur cluster binding binding 3 iron, 4 sulfur cluster binding metal cluster binding small molecule binding molybdopterin cofactor binding cation binding ion binding metal ion binding	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	protein-containing complex catalytic complex oxidoreductase complex cellular anatomical structure membrane
B, D, F, H	Arsenite oxidase subunit AioB	oxidoreductase activity, acting on phosphorus or arsenic in donors, with a copper protein as acceptor arsenate reductase (azurin) activity oxidoreductase activity catalytic activity oxidoreductase activity, acting on phosphorus or arsenic in donors iron-sulfur cluster binding 2 iron, 2 sulfur cluster binding binding metal cluster binding small molecule binding cation binding ion binding metal ion binding	-	cellular anatomical structure membrane

InterPro: Protein Family Classification InterPro Database Homepage

Chains	Accession	Name	Type
A, C, E, G	IPR006657	Molybdopterin dinucleotide-binding domain	Domain
A, C, E, G	IPR006656	Molybdopterin oxidoreductase	Domain
A, C, E, G	IPR014066	Arsenite oxidase subunit AioA/Iodate reductase subunit IdrA, large subunit	Family
A, C, E, G	IPR041632	Arsenite oxidase subunit AioA/Iodate reductase subunit IdrA, 3Fe-4S cluster	Domain
A, C, E, G	IPR009010	Aspartate decarboxylase-like domain superfamily	Homologous Superfamily
A, C, E, G	IPR050123	Prokaryotic molybdopterin-containing oxidoreductase	Family
B, D, F, H	IPR017941	Rieske [2Fe-2S] iron-sulphur domain	Domain
B, D, F, H	IPR005805	Rieske iron-sulphur protein, C-terminal	Domain
B, D, F, H	IPR036922	Rieske [2Fe-2S] iron-sulphur domain superfamily	Homologous Superfamily
B, D, F, H	IPR006311	Twin-arginine translocation pathway, signal sequence	Conserved Site
B, D, F, H	IPR014349	Rieske iron-sulphur protein	Family
B, D, F, H	IPR014067	Arsenite oxidase subunit AioB/Iodate reductase subunit IdrB, small subunit	Family
B, D, F, H	IPR019546	Twin-arginine translocation pathway, signal sequence, bacterial/archaeal	Conserved Site

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.