1AFS

RECOMBINANT RAT LIVER 3-ALPHA-HYDROXYSTEROID DEHYDROGENASE (3-ALPHA-HSD) COMPLEXED WITH NADP AND TESTOSTERONE

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	d1afsa_	Alpha and beta proteins (a/b)	TIM beta/alpha-barrel	NAD(P)-linked oxidoreductase	Aldo-keto reductases (NADP)	3-alpha-hydroxysteroid dehydrogenase	Norway rat (Rattus norvegicus ) [TaxId: 10116 ],	SCOPe (2.08)
B	d1afsb_	Alpha and beta proteins (a/b)	TIM beta/alpha-barrel	NAD(P)-linked oxidoreductase	Aldo-keto reductases (NADP)	3-alpha-hydroxysteroid dehydrogenase	Norway rat (Rattus norvegicus ) [TaxId: 10116 ],	SCOPe (2.08)

Domain Annotation: SCOP2 Classification SCOP2 Database Homepage

Chains	Type	Family Name	Domain Identifier	Family Identifier	Provenance Source (Version)
A	SCOP2 Family	Aldo-keto reductases (NADP)	8030920	4003124	SCOP2 (2022-06-29)
A	SCOP2 Superfamily	NAD(P)-linked oxidoreductase	8043299	3000288	SCOP2 (2022-06-29)
B	SCOP2B Superfamily	NAD(P)-linked oxidoreductase	8043299	3000288	SCOP2B (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	Aldo_ket_red	e1afsA1	A: a/b barrels	X: TIM beta/alpha-barrel	H: TIM barrels (From Topology)	T: TIM barrels	F: Aldo_ket_red	ECOD (1.6)
B	Aldo_ket_red	e1afsB1	A: a/b barrels	X: TIM beta/alpha-barrel	H: TIM barrels (From Topology)	T: TIM barrels	F: Aldo_ket_red	ECOD (1.6)

Domain Annotation: CATH CATH Database Homepage

Chain	Domain	Class	Architecture	Topology	Homology	Provenance Source (Version)
A	3.20.20.100	Alpha Beta	Alpha-Beta Barrel	TIM Barrel	NADP-dependent oxidoreductase domain	CATH (4.3.0)
B	3.20.20.100	Alpha Beta	Alpha-Beta Barrel	TIM Barrel	NADP-dependent oxidoreductase domain	CATH (4.3.0)

Protein Family Annotation Pfam Database Homepage

Chains	Accession	Name	Description	Comments	Source
A, B	PF00248	Aldo/keto reductase family (Aldo_ket_red)	Aldo/keto reductase family	This family includes a number of K+ ion channel beta chain regulatory domains - these are reported to have oxidoreductase activity [2].	Domain

Gene Ontology: Gene Product Annotation Gene Ontology Database Homepage

Chains	Polymer	Molecular Function	Biological Process	Cellular Component
A, B	3-ALPHA-HYDROXYSTEROID DEHYDROGENASE	bile acid binding organic acid binding binding ion binding anion binding carboxylic acid binding monocarboxylic acid binding small molecule binding aldo-keto reductase (NADPH) activity alcohol dehydrogenase [NAD(P)+] activity oxidoreductase activity oxidoreductase activity, acting on the CH-OH group of donors, NAD or NADP as acceptor oxidoreductase activity, acting on CH-OH group of donors alcohol dehydrogenase (NADP+) activity bile acid binding organic acid binding binding ion binding anion binding carboxylic acid binding monocarboxylic acid binding small molecule binding aldo-keto reductase (NADPH) activity alcohol dehydrogenase [NAD(P)+] activity oxidoreductase activity oxidoreductase activity, acting on the CH-OH group of donors, NAD or NADP as acceptor oxidoreductase activity, acting on CH-OH group of donors alcohol dehydrogenase (NADP+) activity catalytic activity aldose reductase (NADPH) activity steroid dehydrogenase activity androsterone dehydrogenase activity steroid dehydrogenase activity, acting on the CH-OH group of donors, NAD or NADP as acceptor androsterone dehydrogenase (B-specific) activity monooxygenase activity oxidoreductase activity, acting on paired donors, with incorporation or reduction of molecular oxygen ketosteroid monooxygenase activity oxidoreductase activity, acting on paired donors, with incorporation or reduction of molecular oxygen, NAD(P)H as one donor, and incorporation of one atom of oxygen	steroid metabolic process primary metabolic process metabolic process lipid metabolic process developmental process multicellular organismal process head development forebrain development animal organ development brain development nervous system development pallium development multicellular organism development central nervous system development steroid metabolic process primary metabolic process metabolic process lipid metabolic process developmental process multicellular organismal process head development forebrain development animal organ development brain development nervous system development pallium development multicellular organism development central nervous system development anatomical structure development telencephalon development hippocampus development limbic system development system development regulation of hormone levels cellular metabolic process biological regulation C21-steroid hormone metabolic process hormone metabolic process cellular ketone metabolic process progesterone metabolic process olefinic compound metabolic process small molecule metabolic process cellular process regulation of biological quality glycosyl compound metabolic process daunorubicin metabolic process polyketide metabolic process glycoside metabolic process carbohydrate derivative metabolic process secondary metabolic process aminoglycoside antibiotic metabolic process prostaglandin metabolic process icosanoid metabolic process fatty acid metabolic process unsaturated fatty acid metabolic process oxoacid metabolic process carboxylic acid metabolic process organic acid metabolic process prostanoid metabolic process cellular lipid metabolic process monocarboxylic acid metabolic process organic hydroxy compound metabolic process alcohol metabolic process doxorubicin metabolic process tertiary alcohol metabolic process primary alcohol metabolic process	intracellular anatomical structure cytoplasm cellular anatomical entity cytosol

InterPro: Protein Family Classification InterPro Database Homepage

Chains	Accession	Name	Type
A, B	IPR018170	Aldo/keto reductase, conserved site	Conserved Site
A, B	IPR020471	Aldo-keto reductase	Family
A, B	IPR044482	Aldo-keto reductase family 1 member C	Family
A, B	IPR036812	NADP-dependent oxidoreductase domain superfamily	Homologous Superfamily
A, B	IPR023210	NADP-dependent oxidoreductase domain	Domain

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.