9C91 | pdb_00009c91

Assimilatory NADPH-dependent sulfite reductase minimal dimer

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)
B	SCOP2B Superfamily	Nitrite/Sulfite reductase N-terminal domain-like	8035688	3001366	SCOP2B (2022-06-29)
B	SCOP2B Superfamily	Nitrite/Sulfite reductase N-terminal domain-like	8035690	3001366	SCOP2B (2022-06-29)
B	SCOP2B Superfamily	Nitrite and sulphite reductase 4Fe-4S domain-like	8036474	3000646	SCOP2B (2022-06-29)
B	SCOP2B Superfamily	Nitrite and sulphite reductase 4Fe-4S domain-like	8036473	3000646	SCOP2B (2022-06-29)
A	SCOP2B Superfamily	Riboflavin synthase domain-like	8042068	3001812	SCOP2B (2022-06-29)
A	SCOP2B Superfamily	Flavoproteins	8034651	3001217	SCOP2B (2022-06-29)
A	SCOP2B Superfamily	Ferredoxin reductase-like, C-terminal NADP-linked domain	8044197	3001461	SCOP2B (2022-06-29)

Protein Family Annotation Pfam Database Homepage

Chains	Accession	Name	Description	Comments	Source
B	PF03460	Nitrite/Sulfite reductase ferredoxin-like half domain (NIR_SIR_ferr)	Nitrite/Sulfite reductase ferredoxin-like half domain	-	Repeat
B	PF01077	Nitrite and sulphite reductase 4Fe-4S domain (NIR_SIR)	Nitrite and sulphite reductase 4Fe-4S domain	-	Family
A	PF00667	FAD binding domain (FAD_binding_1)	FAD binding domain	This domain is found in sulfite reductase, NADPH cytochrome P450 reductase, Nitric oxide synthase and methionine synthase reductase. This domain consists of a RIFT-like beta-barrel containing an inserted alpha-helical subdomain.	Domain
A	PF00175	Oxidoreductase NAD-binding domain (NAD_binding_1)	Oxidoreductase NAD-binding domain	Xanthine dehydrogenases, that also bind FAD/NAD, have essentially no similarity.	Domain
A	PF00258	Flavodoxin (Flavodoxin_1)	Flavodoxin		Domain

Gene Ontology: Gene Product Annotation Gene Ontology Database Homepage

Chains	Polymer	Molecular Function	Biological Process	Cellular Component
B	Sulfite reductase [NADPH] hemoprotein beta-component	oxidoreductase activity, acting on a sulfur group of donors sulfite reductase (NADPH) activity oxidoreductase activity sulfite reductase activity catalytic activity oxidoreductase activity, acting on a sulfur group of donors, NAD(P) as acceptor binding nucleoside phosphate binding purine nucleotide binding adenyl nucleotide binding nucleotide binding heterocyclic compound binding NADP binding small molecule binding oxidoreductase activity, acting on a sulfur group of donors sulfite reductase (NADPH) activity oxidoreductase activity sulfite reductase activity catalytic activity oxidoreductase activity, acting on a sulfur group of donors, NAD(P) as acceptor binding nucleoside phosphate binding purine nucleotide binding adenyl nucleotide binding nucleotide binding heterocyclic compound binding NADP binding small molecule binding tetrapyrrole binding heme binding iron-sulfur cluster binding 4 iron, 4 sulfur cluster binding metal cluster binding cation binding ion binding metal ion binding	sulfur compound biosynthetic process biosynthetic process sulfur compound metabolic process metabolic process cellular process hydrogen sulfide biosynthetic process hydrogen sulfide metabolic process small molecule biosynthetic process oxoacid metabolic process sulfur amino acid metabolic process carboxylic acid metabolic process amino acid metabolic process primary metabolic process organic acid biosynthetic process sulfur compound biosynthetic process biosynthetic process sulfur compound metabolic process metabolic process cellular process hydrogen sulfide biosynthetic process hydrogen sulfide metabolic process small molecule biosynthetic process oxoacid metabolic process sulfur amino acid metabolic process carboxylic acid metabolic process amino acid metabolic process primary metabolic process organic acid biosynthetic process organic acid metabolic process alpha-amino acid metabolic process carboxylic acid biosynthetic process cysteine biosynthetic process cysteine metabolic process amino acid biosynthetic process small molecule metabolic process serine family amino acid biosynthetic process sulfur amino acid biosynthetic process alpha-amino acid biosynthetic process sulfate assimilation	protein-containing complex catalytic complex sulfite reductase complex (NADPH) intracellular protein-containing complex
A	Sulfite reductase [NADPH] flavoprotein alpha-component	oxidoreductase activity catalytic activity NADP+ binding binding nucleotide binding nucleoside phosphate binding ion binding purine nucleotide binding anion binding adenyl nucleotide binding heterocyclic compound binding NADP binding small molecule binding oxidoreductase activity, acting on a sulfur group of donors oxidoreductase activity catalytic activity NADP+ binding binding nucleotide binding nucleoside phosphate binding ion binding purine nucleotide binding anion binding adenyl nucleotide binding heterocyclic compound binding NADP binding small molecule binding oxidoreductase activity, acting on a sulfur group of donors sulfite reductase (NADPH) activity sulfite reductase activity oxidoreductase activity, acting on a sulfur group of donors, NAD(P) as acceptor FMN binding carbohydrate derivative binding ribonucleotide binding flavin adenine dinucleotide binding riboflavin reductase (NADPH) activity riboflavin reductase [NAD(P)H] activity oxidoreductase activity, acting on the CH-NH group of donors, NAD or NADP as acceptor oxidoreductase activity, acting on the CH-NH group of donors	sulfur compound biosynthetic process biosynthetic process sulfur compound metabolic process metabolic process cellular process hydrogen sulfide biosynthetic process hydrogen sulfide metabolic process small molecule biosynthetic process oxoacid metabolic process sulfur amino acid metabolic process carboxylic acid metabolic process amino acid metabolic process primary metabolic process organic acid biosynthetic process sulfur compound biosynthetic process biosynthetic process sulfur compound metabolic process metabolic process cellular process hydrogen sulfide biosynthetic process hydrogen sulfide metabolic process small molecule biosynthetic process oxoacid metabolic process sulfur amino acid metabolic process carboxylic acid metabolic process amino acid metabolic process primary metabolic process organic acid biosynthetic process organic acid metabolic process alpha-amino acid metabolic process carboxylic acid biosynthetic process cysteine biosynthetic process cysteine metabolic process amino acid biosynthetic process small molecule metabolic process serine family amino acid biosynthetic process sulfur amino acid biosynthetic process alpha-amino acid biosynthetic process sulfate assimilation	protein-containing complex catalytic complex sulfite reductase complex (NADPH) intracellular protein-containing complex cellular anatomical structure intracellular anatomical structure cytoplasm cytosol

InterPro: Protein Family Classification InterPro Database Homepage

Chains	Accession	Name	Type
B	IPR011786	Sulphite reductase (NADPH) hemoprotein, beta subunit	Family
B	IPR005117	Nitrite/Sulfite reductase ferredoxin-like domain	Domain
B	IPR006067	Nitrite/sulphite reductase 4Fe-4S domain	Domain
B	IPR006066	Nitrite/sulphite reductase iron-sulphur/sirohaem-binding site	Binding Site
B	IPR045854	Nitrite and sulphite reductase 4Fe-4S domain-like superfamily	Homologous Superfamily
B	IPR036136	Nitrite/Sulfite reductase ferredoxin-like domain superfamily	Homologous Superfamily
B	IPR045169	Nitrite and sulphite reductase 4Fe-4S domain containing protein	Family
A	IPR001709	Flavoprotein pyridine nucleotide cytochrome reductase	Domain
A	IPR001433	Oxidoreductase FAD/NAD(P)-binding	Domain
A	IPR010199	Sulphite reductase [NADPH] flavoprotein, alpha chain	Family
A	IPR003097	Sulfite reductase [NADPH] flavoprotein alpha-component-like, FAD-binding	Domain
A	IPR023173	NADPH-cytochrome p450 reductase, FAD-binding, alpha-helical domain superfamily	Homologous Superfamily
A	IPR008254	Flavodoxin/nitric oxide synthase	Domain
A	IPR029758	Sulphite reductase [NADPH] flavoprotein, alpha chain, Proteobacteria	Family
A	IPR039261	Ferredoxin-NADP reductase (FNR), nucleotide-binding domain	Homologous Superfamily
A	IPR017938	Riboflavin synthase-like beta-barrel	Homologous Superfamily
A	IPR001094	Flavodoxin-like	Domain
A	IPR017927	FAD-binding domain, ferredoxin reductase-type	Domain
A	IPR029039	Flavoprotein-like superfamily	Homologous Superfamily

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.