Domain Annotation: SCOP2 Classification SCOP2 Database Homepage

ChainsTypeFamily Name Domain Identifier Family IdentifierProvenance Source (Version)
ASCOP2B SuperfamilyFlavoreductase-like 8001343 3000055 SCOP2B (2022-06-29)

Domain Annotation: ECOD Classification ECOD Database Homepage

ChainsFamily NameDomain Identifier ArchitecturePossible HomologyHomologyTopologyFamilyProvenance Source (Version)
AEUF08299e1coyA1 A: a+b two layersX: FAD-linked reductases, C-terminal domain-likeH: FAD-linked reductases-C (From Topology)T: FAD-linked reductases-CF: EUF08299ECOD (1.6)
AGMC_oxred_Ne1coyA2 A: a/b three-layered sandwichesX: Rossmann-likeH: Rossmann-relatedT: FAD/NAD(P)-binding domainF: GMC_oxred_NECOD (1.6)

Domain Annotation: CATH CATH Database Homepage

ChainDomainClassArchitectureTopologyHomologyProvenance Source (Version)
A3.50.50.60 Alpha Beta 3-Layer(bba) Sandwich FAD/NAD(P)-binding domain FAD/NAD(P)-binding domainCATH (4.3.0)
A3.30.410.10 Alpha Beta 2-Layer Sandwich Cholesterol Oxidase domain 2CATH (4.3.0)

Protein Family Annotation Pfam Database Homepage

ChainsAccessionNameDescriptionCommentsSource
PF00732GMC oxidoreductase (GMC_oxred_N)GMC oxidoreductaseThis family of proteins bind FAD as a cofactor.Domain
PF22500GMC oxidoreductase, C-terminal (GMC_oxred_C_1st)GMC oxidoreductase, C-terminalThis domain is found in a group of GMC oxidoreductases mainly from actinomycetes, including Cholesterol oxidase from Streptomyces sp. (ChoA). ChoA is organised into two domains, an FAD-binding domain (Pfam:PF00732) and a substrate binding domain (for ...This domain is found in a group of GMC oxidoreductases mainly from actinomycetes, including Cholesterol oxidase from Streptomyces sp. (ChoA). ChoA is organised into two domains, an FAD-binding domain (Pfam:PF00732) and a substrate binding domain (formed by this entry and Pfam:PF05199) [1-5]. This domain consists of six beta -sheets and one alpha-helix.
Domain
PF05199GMC oxidoreductase (GMC_oxred_C)GMC oxidoreductaseThis domain found associated with Pfam:PF00732.Domain

Gene Ontology: Gene Product Annotation Gene Ontology Database Homepage

ChainsPolymerMolecular FunctionBiological ProcessCellular Component
CHOLESTEROL OXIDASE

Structure Motif Annotation: Mechanism and Catalytic Site Atlas M-CSA Database Homepage

ChainsEnzyme NameDescriptionCatalytic Residues
cholesterol oxidase (GMC type)  M-CSA #354

Cholesterol oxidase, a monomeric flavoenzyme unique to bacteria, catalyses the oxidation and isomerisation of cholesterol to cholest-4-en-3-one. This is the first step in cholesterol catabolism used by a wide range of soil bacteria which can use cholesterol as sole carbon source. Two forms of the cholesterol oxidase are known which share no sequence homology. One contains a FAD cofactor covalently linked through a histidine residue (PDB:1i19) while the other, represented in this entry, contains a non-covalently bound FAD cofactor. This enzyme is part of a wider family the Cholesterol-Methane-Glucose oxidoreductases or GMC oxidoreductases.

The enzyme may be used as a potent insecticidal agent, active against boll weevil larvae and other insects. The enzyme acts by lysing the cells of the mid-gut epithelium resulting in larval death.

Defined by 3 residues: GLU:A-361HIS:A-447ASN:A-485
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