Annotations: 8A6W

Domain Annotation: SCOP2 Classification SCOP2 Database Homepage

Chains	Type	Family Name	Domain Identifier	Family Identifier	Provenance Source (Version)
A [auth B]	SCOP2B Superfamily	Cytochrome P450	8080141	3001061	SCOP2B (2022-06-29)
B [auth E]	SCOP2B Superfamily	Cytochrome P450	8080141	3001061	SCOP2B (2022-06-29)

Protein Family Annotation Pfam Database Homepage

Chains	Accession	Name	Description	Comments	Source
A [auth B], B [auth E]	PF00067	Cytochrome P450 (p450)	Cytochrome P450	Cytochrome P450s are haem-thiolate proteins [6] involved in the oxidative degradation of various compounds. They are particularly well known for their role in the degradation of environmental toxins and mutagens. They can be divided into 4 classes, a ...	Cytochrome P450s are haem-thiolate proteins [6] involved in the oxidative degradation of various compounds. They are particularly well known for their role in the degradation of environmental toxins and mutagens. They can be divided into 4 classes, according to the method by which electrons from NAD(P)H are delivered to the catalytic site. Sequence conservation is relatively low within the family - there are only 3 absolutely conserved residues - but their general topography and structural fold are highly conserved. The conserved core is composed of a coil termed the 'meander', a four-helix bundle, helices J and K, and two sets of beta-sheets. These constitute the haem-binding loop (with an absolutely conserved cysteine that serves as the 5th ligand for the haem iron), the proton-transfer groove and the absolutely conserved EXXR motif in helix K. While prokaryotic P450s are soluble proteins, most eukaryotic P450s are associated with microsomal membranes. their general enzymatic function is to catalyse regiospecific and stereospecific oxidation of non-activated hydrocarbons at physiological temperatures [6].	Domain

Gene Ontology: Gene Product Annotation Gene Ontology Database Homepage

Chains	Polymer	Molecular Function	Biological Process	Cellular Component
A [auth B], B [auth E]	Steroid C26-monooxygenase	oxidoreductase activity monooxygenase activity oxidoreductase activity, acting on paired donors, with incorporation or reduction of molecular oxygen 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 catalytic activity cholest-4-en-3-one 26-monooxygenase activity binding organic cyclic compound binding tetrapyrrole binding heme binding steroid hydroxylase activity cholesterol 26-hydroxylase activity cation binding transition metal ion binding oxidoreductase activity monooxygenase activity oxidoreductase activity, acting on paired donors, with incorporation or reduction of molecular oxygen 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 catalytic activity cholest-4-en-3-one 26-monooxygenase activity binding organic cyclic compound binding tetrapyrrole binding heme binding steroid hydroxylase activity cholesterol 26-hydroxylase activity cation binding transition metal ion binding iron ion binding ion binding metal ion binding small molecule binding	sterol catabolic process alcohol catabolic process catabolic process lipid catabolic process organic hydroxy compound metabolic process sterol metabolic process steroid metabolic process cholesterol metabolic process alcohol metabolic process primary metabolic process cholesterol catabolic process secondary alcohol metabolic process steroid catabolic process organic hydroxy compound catabolic process sterol catabolic process alcohol catabolic process catabolic process lipid catabolic process organic hydroxy compound metabolic process sterol metabolic process steroid metabolic process cholesterol metabolic process alcohol metabolic process primary metabolic process cholesterol catabolic process secondary alcohol metabolic process steroid catabolic process organic hydroxy compound catabolic process metabolic process small molecule metabolic process small molecule catabolic process lipid metabolic process	cell periphery external encapsulating structure cell wall cellular anatomical entity peptidoglycan-based cell wall

InterPro: Protein Family Classification InterPro Database Homepage

Chains	Accession	Name	Type
A [auth B], B [auth E]	IPR017972	Cytochrome P450, conserved site	Conserved Site
A [auth B], B [auth E]	IPR001128	Cytochrome P450	Family
A [auth B], B [auth E]	IPR002397	Cytochrome P450, B-class	Family
A [auth B], B [auth E]	IPR036396	Cytochrome P450 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.