1YKG

Solution structure of the flavodoxin-like domain from the Escherichia coli sulfite reductase

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	d1ykga1	Alpha and beta proteins (a/b)	Flavodoxin-like	Flavoproteins	Cytochrome p450 reductase N-terminal domain-like	Sulfite reductase alpha-component CysJ N-terminal domain	(Escherichia coli ) [TaxId: 562 ],	SCOPe (2.08)

Domain Annotation: SCOP2 Classification SCOP2 Database Homepage

Chains	Type	Family Name	Domain Identifier	Family Identifier	Provenance Source (Version)
A	SCOP2 Family	Cytochrome p450 reductase N-terminal domain-like	8022271	4003670	SCOP2 (2022-06-29)
A	SCOP2 Superfamily	Flavoproteins	8034651	3001217	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	Flavodoxin_1	e1ykgA1	A: a/b three-layered sandwiches	X: Flavodoxin-like	H: Flavoproteins/Phosphotyrosine protein phosphatases-like	T: Flavoproteins	F: Flavodoxin_1	ECOD (1.6)

Domain Annotation: CATH CATH Database Homepage

Chain	Domain	Class	Architecture	Topology	Homology	Provenance Source (Version)
A	3.40.50.360	Alpha Beta	3-Layer(aba) Sandwich	Rossmann fold	Flavodoxin domain	CATH (4.3.0)

Protein Family Annotation Pfam Database Homepage

Chains	Accession	Name	Description	Comments	Source
A	PF00258	Flavodoxin (Flavodoxin_1)	Flavodoxin		Domain

Gene Ontology: Gene Product Annotation Gene Ontology Database Homepage

Chains	Polymer	Molecular Function	Biological Process	Cellular Component
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 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 serine family amino acid metabolic process oxoacid metabolic process sulfur amino acid metabolic process amino acid metabolic process organic acid biosynthetic process organic acid metabolic process alpha-amino acid metabolic process sulfur compound biosynthetic process biosynthetic process sulfur compound metabolic process metabolic process cellular process hydrogen sulfide biosynthetic process hydrogen sulfide metabolic process serine family amino acid metabolic process oxoacid metabolic process sulfur amino acid metabolic process amino acid metabolic process organic acid biosynthetic process organic acid metabolic process alpha-amino acid metabolic process carboxylic acid biosynthetic process cysteine biosynthetic process small molecule metabolic process small molecule biosynthetic process carboxylic acid metabolic process primary metabolic process cysteine metabolic process amino acid biosynthetic 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
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.