Annotations: 3OV4

Crystal Structure of Ketosteroid Isomerase P39GV40GS42G from Pseudomonas Testosteroni (tKSI) bound to Equilenin

External Resource: Annotation

Domain Annotation: SCOP/SCOPe Classification
Domain Annotation: SCOP2 Classification
Domain Annotation: ECOD Classification
Domain Annotation: CATH
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)
D	d3ov4d_	Alpha and beta proteins (a+b)	Cystatin-like	NTF2-like	Ketosteroid isomerase-like	Delta-5-3-ketosteroid isomerase, steroid delta-isomerase, KSI	Pseudomonas testosteroni (Comamonas testosteroni ) [TaxId: 285 ],	SCOPe (2.08)
C	d3ov4c_	Alpha and beta proteins (a+b)	Cystatin-like	NTF2-like	Ketosteroid isomerase-like	Delta-5-3-ketosteroid isomerase, steroid delta-isomerase, KSI	Pseudomonas testosteroni (Comamonas testosteroni ) [TaxId: 285 ],	SCOPe (2.08)
B	d3ov4b_	Alpha and beta proteins (a+b)	Cystatin-like	NTF2-like	Ketosteroid isomerase-like	Delta-5-3-ketosteroid isomerase, steroid delta-isomerase, KSI	Pseudomonas testosteroni (Comamonas testosteroni ) [TaxId: 285 ],	SCOPe (2.08)
A	d3ov4a_	Alpha and beta proteins (a+b)	Cystatin-like	NTF2-like	Ketosteroid isomerase-like	Delta-5-3-ketosteroid isomerase, steroid delta-isomerase, KSI	Pseudomonas testosteroni (Comamonas testosteroni ) [TaxId: 285 ],	SCOPe (2.08)

Domain Annotation: SCOP2 Classification SCOP2 Database Homepage

Chains	Type	Family Name	Domain Identifier	Family Identifier	Provenance Source (Version)
D	SCOP2B Superfamily	NTF2-like	8034686	3000472	SCOP2B (2022-06-29)
C	SCOP2B Superfamily	NTF2-like	8034686	3000472	SCOP2B (2022-06-29)
B	SCOP2B Superfamily	NTF2-like	8034686	3000472	SCOP2B (2022-06-29)
A	SCOP2B Superfamily	NTF2-like	8034686	3000472	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)
D	DHDPS	e3ov4D1	A: beta barrels	X: Lipocalins/Streptavidin	H: SH3	T: Transmembrane protein 14A	F: DHDPS	ECOD (v294.2)
C	DHDPS	e3ov4C1	A: beta barrels	X: Lipocalins/Streptavidin	H: SH3	T: Transmembrane protein 14A	F: DHDPS	ECOD (v294.2)
B	DHDPS	e3ov4B1	A: beta barrels	X: Lipocalins/Streptavidin	H: SH3	T: Transmembrane protein 14A	F: DHDPS	ECOD (v294.2)
A	DHDPS	e3ov4A1	A: beta barrels	X: Lipocalins/Streptavidin	H: SH3	T: Transmembrane protein 14A	F: DHDPS	ECOD (v294.2)

Domain Annotation: CATH CATH Database Homepage

Chain	Domain	Class	Architecture	Topology	Homology	Provenance Source (Version)
D	3.10.450.50	Alpha Beta	Roll	Nuclear Transport Factor 2	Chain: A,	CATH (4.3.0)
C	3.10.450.50	Alpha Beta	Roll	Nuclear Transport Factor 2	Chain: A,	CATH (4.3.0)
B	3.10.450.50	Alpha Beta	Roll	Nuclear Transport Factor 2	Chain: A,	CATH (4.3.0)
A	3.10.450.50	Alpha Beta	Roll	Nuclear Transport Factor 2	Chain: A,	CATH (4.3.0)

Gene Ontology: Gene Product Annotation Gene Ontology Database Homepage

Chains	Polymer	Molecular Function	Biological Process	Cellular Component
A, B, C, D	Steroid Delta-isomerase	isomerase activity intramolecular oxidoreductase activity, transposing C=C bonds intramolecular oxidoreductase activity catalytic activity steroid Delta-isomerase activity	steroid metabolic process primary metabolic process metabolic process cellular process lipid metabolic process	-

InterPro: Protein Family Classification InterPro Database Homepage

Chains	Accession	Name	Type
A, B, C, D	IPR032710	NTF2-like domain superfamily	Homologous Superfamily
A, B, C, D	IPR039256	Ketosteroid isomerase	Family
A, B, C, D	IPR037401	SnoaL-like domain	Domain
A, B, C, D	IPR011944	Steroid delta5-4-isomerase	Family

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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. RCSB PDB uses resources of the National Energy Research Scientific Computing Center (NERSC), a Department of Energy User Facility.