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A heme-thiolate protein (cytochrome P-450). The reaction proceeds in three stages, with two hydroxylations at C-22 and C-20 preceding scission of the side-chain between carbons 20 and 22. The initial source of the electrons is NADPH, which transfers the electrons to the adrenodoxin via EC 1.18.1.6, adrenodoxin-NADP+ reductase. Group: Enzymes. Synonyms: cholesterol desmolase; cytochrome P-450scc; C27-side chain cleavage enzyme; cholesterol 20-22-desmolase; cholesterol C20-22 desmolase; cholesterol side-chain cleavage enzyme; cholesterol side-chain-cleaving enzyme; steroid 20-22 desmolase; steroid 20-22-lyase; CYP11A1 (gene name). Enzyme Commission Number: EC 1.14.15.6. CAS No. 37292-81-2, 440354-98-3. Storage: Store it at +4 ?C for short term. For long term storage, store it at -20 ?C?-80 ?C. Form: Liquid or lyophilized powder. EXWM-0949; cholesterolmonooxygenase (side-chain-cleaving); EC 1.14.15.6; 37292-81-2, 440354-98-3; cholesterol desmolase; cytochrome P-450scc; C27-side chain cleavage enzyme; cholesterol 20-22-desmolase; cholesterol C20-22 desmolase; cholesterol side-chain cleavage enzyme; cholesterol side-chain-cleaving enzyme; steroid 20-22 desmolase; steroid 20-22-lyase; CYP11A1 (gene name). Cat No: EXWM-0949.
cholesterol 7α-monooxygenase
A P-450 heme-thiolate liver protein that catalyses the first step in the biosynthesis of bile acids. The direct electron donor to the enzyme is EC 1.6.2.4, NADPH-hemoprotein reductase. Group: Enzymes. Synonyms: cholesterol 7α-hydroxylase; CYP7A1 (gene name). Enzyme Commission Number: EC 1.14.14.23. CAS No. 9037-53-0. Storage: Store it at +4 ?C for short term. For long term storage, store it at -20 ?C?-80 ?C. Form: Liquid or lyophilized powder. EXWM-0920; cholesterol 7α-monooxygenase; EC 1.14.14.23; 9037-53-0; cholesterol 7α-hydroxylase; CYP7A1 (gene name). Cat No: EXWM-0920.
24-hydroxycholesterol 7α-hydroxylase
A P450 heme-thiolate protein that is found in liver microsomes and in ciliary non-pigmented epithelium. The enzyme is specific for (24S)-cholest-5-ene-3β,24-diol, which is formed mostly in the brain by EC 1.14.14.25, cholesterol 24-hydroxylase. The direct electron donor to the enzyme is EC 1.6.2.4, NADPH-hemoprotein reductase. Group: Enzymes. Synonyms: 24-hydroxycholesterol 7α-monooxygenase; CYP39A1; CYP39A1 oxysterol 7α-hydroxylase. Enzyme Commission Number: EC 1.14.14.26. CAS No. 288309-90-0. Storage: Store it at +4 ?C for short term. For long term storage, store it at -20 ?C?-80 ?C. Form: Liquid or lyophilized powder. EXWM-0923; 24-hydroxycholesterol 7α-hydroxylase; EC 1.14.14.26; 288309-90-0; 24-hydroxycholesterol 7α-monooxygenase; CYP39A1; CYP39A1 oxysterol 7α-hydroxylase. Cat No: EXWM-0923.
This bacterial enzyme participates in the degradation of several steroids, including cholesterol and testosterone. It can use either FADH or FMNH2 as flavin cofactor. The enzyme forms a two-component system with a reductase (HsaB) that utilizes NADH to reduce the flavin, which is then transferred to the oxygenase subunit. Group: Enzymes. Synonyms: HsaA. Enzyme Commission Number: EC 1.14.14.12. Storage: Store it at +4 ?C for short term. For long term storage, store it at -20 ?C?-80 ?C. Form: Liquid or lyophilized powder. EXWM-0909; 3-hydroxy-9,10-secoandrosta-1,3,5(10)-triene-9,17-dione monooxygenase; EC 1.14.14.12; HsaA. Cat No: EXWM-0909.
3-ketosteroid 9α-monooxygenase
The enzyme is involved in the cholesterol degradation pathway of several bacterial pathogens, such as Mycobacterium tuberculosis. It is a two-component system consisting of a terminal oxygenase (KshA) and a ferredoxin reductase (KshB). The oxygenase contains a Rieske-type iron-sulfur center and non-heme iron. The reductase component is a flavoprotein containing an NAD-binding domain and a plant-type iron-sulfur cluster. The product of the enzyme is unstable, and spontaneously converts to 3-hydroxy-9,10-seconandrost-1,3,5(10)-triene-9,17-dione. Group: Enzymes. Synonyms: KshAB; 3-ketosteroid 9α-hydroxylase. Enzyme Commission Number: EC 1.14.13.142. Storage: Store it at +4 ?C for short term. For long term storage, store it at -20 ?C?-80 ?C. Form: Liquid or lyophilized powder. EXWM-0742; 3-ketosteroid 9α-monooxygenase; EC 1.14.13.142; KshAB; 3-ketosteroid 9α-hydroxylase. Cat No: EXWM-0742.
This enzyme, found in several bacterial pathogens, is involved in degradation of the host cholesterol. It catalyses the hydroxylation of the C-26 carbon, followed by oxidation of the alcohol to the carboxylic acid via the aldehyde intermediate, initiating the degradation of the alkyl side-chain of cholesterol. The products are exclusively in the (25R) conformation. The enzyme also accepts cholesterol as a substrate. cf. EC 1.14.13.141, cholest-4-en-3-one 26-monooxygenase. The enzyme can receive electrons from ferredoxin reductase in vitro, its natural electron donor is not known yet. Group: Enzymes. Synonyms: CYP142. Enzyme Commission Number: EC 1.14.13.221. Storage: Store it at +4 ?C for short term. For long term storage, store it at -20 ?C?-80 ?C. Form: Liquid or lyophilized powder. EXWM-0824; cholest-4-en-3-one 26-monooxygenase [(25R)-3-oxocholest-4-en-26-oate forming]; EC 1.14.13.221; CYP142. Cat No: EXWM-0824.
This enzyme, found in several bacterial pathogens, is involved in degradation of the host's cholesterol. It catalyses the hydroxylation of the C-26 carbon, followed by oxidation of the alcohol to the carboxylic acid via the aldehyde intermediate, initiating the degradation of the alkyl side-chain of cholesterol. The products are exclusively in the (25S) configuration. It is a two-component system consisting of a P-450 (heme thiolate) oxygenase (Cyp125) and a ferredoxin reductase (most likely KshB, which is also a part of EC 1.14.13.142, 3-ketosteroid 9α-monooxygenase). The enzyme also accepts cholesterol as a substrate. cf. EC 1.14.13.221, cholest-4-en-3-one 27-monooxygenase. Group: Enzymes. Synonyms: CYP125; CYP125A1; cholest-4-en-3-one 27-monooxygenase (misleading); cholest-4-en-3-one,NADH:oxygen oxidoreductase (26-hydroxyl. Enzyme Commission Number: EC 1.14.13.141. Storage: Store it at +4 ?C for short term. For long term storage, store it at -20 ?C?-80 ?C. Form: Liquid or lyophilized powder. EXWM-0741; cholest-4-en-3-one 26-monooxygenase [(25S)-3-oxocholest-4-en-26-oate forming]; EC 1.14.13.141; CYP125; CYP125A1; cholest-4-en-3-one 27-monooxygenase (misleading); cholest-4-en-3-one,NADH:oxygen oxidoreductase (26-hydroxylating); cholest-4-en-3-one 26-monooxygenase (ambiguous). Cat No: EXWM-0741.
cholestanetriol 26-monooxygenase
This mitochondrial cytochrome P-450 enzyme requires adrenodoxin. It catalyses the first three sterol side chain oxidations in bile acid biosynthesis via the neutral (classic) pathway. Can also act on cholesterol, cholest-5-ene-3β,7α-diol, 7α-hydroxycholest-4-en-3-one, and 5β-cholestane-3α,7α-diol. The enzyme can also hydroxylate cholesterol at positions 24 and 25. The initial source of the electrons is NADPH, which transfers the electrons to the adrenodoxin via EC 1.18.1.6, adrenodoxin-NADP+ reductase. Group: Enzymes. Synonyms: 5β-cholestane-3α,7α,12α-triol 26-hydroxylase; 5β-cholestane-3α,7α,12α-triol hydroxylase; cholestanetriol 26-hydroxylase; sterol 27-hydroxylase; sterol 26-hydroxylase; cholesterol 27-hydroxyla. Enzyme Commission Number: EC 1.14.15.15. CAS No. 52227-77-7. Storage: Store it at +4 ?C for short term. For long term storage, store it at -20 ?C?-80 ?C. Form: Liquid or lyophilized powder. EXWM-0940; cholestanetriol 26-monooxygenase; EC 1.14.15.15; 52227-77-7; 5β-cholestane-3α,7α,12α-triol 26-hydroxylase; 5β-cholestane-3α,7α,12α-triol hydroxylase; cholestanetriol 26-hydroxylase; sterol 27-hydroxylase; sterol 26-hydroxylase; cholesterol 27-hydroxylase; CYP27A; CYP27A1; cytochrome P450 27A1'. Cat No: EXWM-0940.
cholesterol 24-hydroxylase
A P-450 heme-thiolate protein. The enzyme can also produce 25-hydroxycholesterol. In addition, it can further hydroxylate the product to 24,25-dihydroxycholesterol and 24,27-dihydroxycholesterol. This reaction is the first step in the enzymic degradation of cholesterol in the brain as hydroxycholesterol can pass the blood-brain barrier whereas cholesterol cannot. The direct electron donor to the enzyme is EC 1.6.2.4, NADPH-hemoprotein reductase. Group: Enzymes. Synonyms: cholesterol 24-monooxygenase; CYP46; CYP46A1; cholesterol 24S-hydroxylase; cytochrome P450 46A1. Enzyme Commission Number: EC 1.14.14.25. CAS No. 50812-30-1, 213327-78-7. Storage: Store it at +4 ?C for short term. For long term storage, store it at -20 ?C?-80 ?C. Form: Liquid or lyophilized powder. EXWM-0922; cholesterol 24-hydroxylase; EC 1.14.14.25; 50812-30-1, 213327-78-7; cholesterol 24-monooxygenase; CYP46; CYP46A1; cholesterol 24S-hydroxylase; cytochrome P450 46A1. Cat No: EXWM-0922.
cholesterol 25-hydroxylase
Unlike most other sterol hydroxylases, this enzyme is not a cytochrome P-450. Instead, it uses diiron cofactors to catalyse the hydroxylation of hydrophobic substrates. The diiron cofactor can be either Fe-O-Fe or Fe-OH-Fe and is bound to the enzyme through interactions with clustered histidine or glutamate residues. In cell cultures, this enzyme down-regulates cholesterol synthesis and the processing of sterol regulatory element binding proteins (SREBPs). Group: Enzymes. Synonyms: cholesterol 25-monooxygenase. Enzyme Commission Number: EC 1.14.99.38. CAS No. 60202-07-5. Storage: Store it at +4 ?C for short term. For long term storage, store it at -20 ?C?-80 ?C. Form: Liquid or lyophilized powder. EXWM-1049; cholesterol 25-hydroxylase; EC 1.14.99.38; 60202-07-5; cholesterol 25-monooxygenase. Cat No: EXWM-1049.
pimeloyl-[acyl-carrier protein] synthase
A heme-thiolate protein (P-450). The enzyme catalyses an oxidative C-C bond cleavage of long-chain acyl-[acyl-carrier protein]s of various lengths to generate pimeloyl-[acyl-carrier protein], an intermediate in the biosynthesis of biotin. The preferred substrate of the enzyme from the bacterium Bacillus subtilis is palmitoyl-[acyl-carrier protein] which then gives heptanal as the alkanal. The mechanism is similar to EC 1.14.15.6, cholesterolmonooxygenase (side-chain-cleaving), followed by a hydroxylation step, which may occur spontaneously. Group: Enzymes. Synonyms: bioI (gene name); P450BioI; CYP107H1. Enzyme Commission Number: EC 1.14.15.12. Storage: Store it at +4 ?C for short term. For long term storage, store it at -20 ?C?-80 ?C. Form: Liquid or lyophilized powder. EXWM-0937; pimeloyl-[acyl-carrier protein] synthase; EC 1.14.15.12; bioI (gene name); P450BioI; CYP107H1. Cat No: EXWM-0937.
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