1I19

CRYSTAL STRUCTURE OF CHOLESTEROL OXIDASE FROM B.STEROLICUM

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
Structure Motif: Primary M-CSA Annotation

Domain Annotation: SCOP/SCOPe Classification SCOP-e Database Homepage

Chains	Domain Info	Class	Fold	Superfamily	Family	Domain	Species	Provenance Source (Version)
A	d1i19a1	Alpha and beta proteins (a+b)	Ferredoxin-like	FAD-linked oxidases, C-terminal domain	Cholesterol oxidase	Cholesterol oxidase	(Brevibacterium sterolicum ) [TaxId: 1702 ],	SCOPe (2.08)
A	d1i19a2	Alpha and beta proteins (a+b)	FAD-binding/transporter-associated domain-like	FAD-binding/transporter-associated domain-like	FAD-linked oxidases, N-terminal domain	Cholesterol oxidase	(Brevibacterium sterolicum ) [TaxId: 1702 ],	SCOPe (2.08)
B	d1i19b1	Alpha and beta proteins (a+b)	Ferredoxin-like	FAD-linked oxidases, C-terminal domain	Cholesterol oxidase	Cholesterol oxidase	(Brevibacterium sterolicum ) [TaxId: 1702 ],	SCOPe (2.08)
B	d1i19b2	Alpha and beta proteins (a+b)	FAD-binding/transporter-associated domain-like	FAD-binding/transporter-associated domain-like	FAD-linked oxidases, N-terminal domain	Cholesterol oxidase	(Brevibacterium sterolicum ) [TaxId: 1702 ],	SCOPe (2.08)

Domain Annotation: SCOP2 Classification SCOP2 Database Homepage

Chains	Type	Family Name	Domain Identifier	Family Identifier	Provenance Source (Version)
A	SCOP2 Family	Cholesterol oxidase	8021137	4003547	SCOP2 (2022-06-29)
A	SCOP2 Family	FAD-linked oxidases N-terminal domain	8021139	4002178	SCOP2 (2022-06-29)
A	SCOP2 Superfamily	FAD-linked oxidases C-terminal domain-like	8033517	3001317	SCOP2 (2022-06-29)
A	SCOP2 Superfamily	FAD-binding/transporter-associated domain-like	8033519	3000913	SCOP2 (2022-06-29)
B	SCOP2B Superfamily	FAD-binding/transporter-associated domain-like	8033519	3000913	SCOP2B (2022-06-29)
B	SCOP2B Superfamily	FAD-linked oxidases C-terminal domain-like	8033517	3001317	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	PF09129	e1i19A1	A: a+b two layers	X: Alpha-beta plaits	H: FAD-linked oxidases, C-terminal domain (From Topology)	T: FAD-linked oxidases, C-terminal domain	F: PF09129	ECOD (1.6)
A	PF01565	e1i19A2	A: a+b complex topology	X: FAD-binding domain-like	H: FAD-binding domain (From Topology)	T: FAD-binding domain	F: PF01565	ECOD (1.6)
B	PF09129	e1i19B1	A: a+b two layers	X: Alpha-beta plaits	H: FAD-linked oxidases, C-terminal domain (From Topology)	T: FAD-linked oxidases, C-terminal domain	F: PF09129	ECOD (1.6)
B	PF01565	e1i19B2	A: a+b complex topology	X: FAD-binding domain-like	H: FAD-binding domain (From Topology)	T: FAD-binding domain	F: PF01565	ECOD (1.6)

Domain Annotation: CATH CATH Database Homepage

Chain	Domain	Class	Architecture	Topology	Homology	Provenance Source (Version)
A	3.30.43.10	Alpha Beta	2-Layer Sandwich	Uridine Diphospho-n-acetylenolpyruvylglucosamine Reductase	domain 2	CATH (4.3.0)
A	3.30.465.10	Alpha Beta	2-Layer Sandwich	Uridine Diphospho-n-acetylenolpyruvylglucosamine Reductase	domain 3	CATH (4.3.0)
A	3.40.462.10	Alpha Beta	3-Layer(aba) Sandwich	Vanillyl-alcohol Oxidase	Chain A, domain 3	CATH (4.3.0)
A	1.10.45.10	Mainly Alpha	Orthogonal Bundle	Vanillyl-alcohol Oxidase	Chain A, domain 4	CATH (4.3.0)
B	3.30.43.10	Alpha Beta	2-Layer Sandwich	Uridine Diphospho-n-acetylenolpyruvylglucosamine Reductase	domain 2	CATH (4.3.0)
B	3.30.465.10	Alpha Beta	2-Layer Sandwich	Uridine Diphospho-n-acetylenolpyruvylglucosamine Reductase	domain 3	CATH (4.3.0)
B	3.40.462.10	Alpha Beta	3-Layer(aba) Sandwich	Vanillyl-alcohol Oxidase	Chain A, domain 3	CATH (4.3.0)
B	1.10.45.10	Mainly Alpha	Orthogonal Bundle	Vanillyl-alcohol Oxidase	Chain A, domain 4	CATH (4.3.0)

Protein Family Annotation Pfam Database Homepage

Chains	Accession	Name	Description	Comments	Source
A, B	PF01565	FAD binding domain (FAD_binding_4)	FAD binding domain	This family consists of various enzymes that use FAD as a co-factor, most of the enzymes are similar to oxygen oxidoreductase. One of the enzymes Vanillyl-alcohol oxidase (VAO) has a solved structure, the alignment includes the FAD binding site, call ...	This family consists of various enzymes that use FAD as a co-factor, most of the enzymes are similar to oxygen oxidoreductase. One of the enzymes Vanillyl-alcohol oxidase (VAO) has a solved structure, the alignment includes the FAD binding site, called the PP-loop, between residues 99-110 [1]. The FAD molecule is covalently bound in the known structure, however the residue that links to the FAD is not in the alignment. VAO catalyses the oxidation of a wide variety of substrates, ranging form aromatic amines to 4-alkylphenols. Other members of this family include D-lactate dehydrogenase, this enzyme catalyses the conversion of D-lactate to pyruvate using FAD as a co-factor; mitomycin radical oxidase, this enzyme oxidises the reduced form of mitomycins and is involved in mitomycin resistance. This family includes MurB an UDP-N-acetylenolpyruvoylglucosamine reductase enzyme EC:1.1.1.158. This enzyme is involved in the biosynthesis of peptidoglycan [2].	Domain
A, B	PF09129	Cholesterol oxidase, substrate-binding (Chol_subst-bind)	Cholesterol oxidase, substrate-binding	The substrate-binding domain found in Cholesterol oxidase is composed of an eight-stranded mixed beta-pleated sheet and six alpha-helices. This domain is positioned over the isoalloxazine ring system of the FAD cofactor bound by FAD_binding_4 (PF:PF0 ...	The substrate-binding domain found in Cholesterol oxidase is composed of an eight-stranded mixed beta-pleated sheet and six alpha-helices. This domain is positioned over the isoalloxazine ring system of the FAD cofactor bound by FAD_binding_4 (PF:PF01565) and forms the roof of the active site cavity, allowing for catalysis of oxidation and isomerisation of cholesterol to cholest-4-en-3-one [1].	Domain

Gene Ontology: Gene Product Annotation Gene Ontology Database Homepage

Chains	Polymer	Molecular Function	Biological Process	Cellular Component
A, B	CHOLESTEROL OXIDASE	oxidoreductase activity, acting on the CH-OH group of donors, oxygen as acceptor oxidoreductase activity oxidoreductase activity, acting on CH-OH group of donors catalytic activity FAD binding flavin adenine dinucleotide binding binding nucleoside phosphate binding ion binding organic cyclic compound binding anion binding nucleotide binding heterocyclic compound binding small molecule binding oxidoreductase activity, acting on the CH-OH group of donors, oxygen as acceptor oxidoreductase activity oxidoreductase activity, acting on CH-OH group of donors catalytic activity FAD binding flavin adenine dinucleotide binding binding nucleoside phosphate binding ion binding organic cyclic compound binding anion binding nucleotide binding heterocyclic compound binding small molecule binding cation binding metal ion binding	-	-

InterPro: Protein Family Classification InterPro Database Homepage

Chains	Accession	Name	Type
A, B	IPR016167	FAD-binding, type PCMH, subdomain 1	Homologous Superfamily
A, B	IPR016164	FAD-linked oxidase-like, C-terminal	Homologous Superfamily
A, B	IPR016170	Cytokinin dehydrogenase, C-terminal domain superfamily	Homologous Superfamily
A, B	IPR006094	FAD linked oxidase, N-terminal	Domain
A, B	IPR010031	L-gulonolactone/D-arabinono-1,4-lactone oxidase-like	Family
A, B	IPR016166	FAD-binding domain, PCMH-type	Domain
A, B	IPR016171	Vanillyl-alcohol oxidase, C-terminal subdomain 2	Homologous Superfamily
A, B	IPR015213	Cholesterol oxidase, substrate-binding	Domain
A, B	IPR036318	FAD-binding, type PCMH-like superfamily	Homologous Superfamily
A, B	IPR016169	FAD-binding, type PCMH, subdomain 2	Homologous Superfamily

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

Chains	Enzyme Name	Description	Catalytic Residues
B	cholesterol oxidase M-CSA #822	Cholesterol oxidase catalyses the oxidation and isomerisation of cholesterol to form cholest-4-en-3-one using FAD as a cofactor. The two forms of the enzyme found in Brevibacterium BCO1 and BCO2 do not show any structural or sequence homology, despite carrying out the same reaction. As a result their mechanisms are believed to be different. Study of the enzymes that degrade cholesterol is clearly of great relevance to medicine due to the role of the steroid in cardiovascular disease.	Defined by 4 residues: HIS:B-69 [auth B-121]GLU:B-259 [auth B-311]GLU:B-423 [auth B-475]ARG:B-425 [auth B-477] \| Explore in 3D: M-CSA Motif Definition Search M-CSA Motif EC: 1.1.3.6 (PDB Primary Data) Search M-CSA Motif + EC 1.1.3.6

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 R01GM133198.