steryl-beta-glucosidase activity
Definition
Target type: molecularfunction
Catalysis of the reaction: cholesteryl-beta-D-glucoside + H2O = D-glucose + cholesterol. [EC:3.2.1.104, RHEA:11956]
Steryl-beta-glucosidase activity is a hydrolase activity that catalyzes the hydrolysis of the beta-glycosidic linkage between a sterol and a glucose molecule. Sterols, such as cholesterol, are essential components of cell membranes and are crucial for maintaining membrane fluidity and integrity. Steryl-beta-glucosidase plays a critical role in the metabolism of sterols by cleaving the glucose moiety from sterol glycosides, releasing free sterols that can be further utilized by the cell. The enzyme typically exhibits specificity for sterol glycosides, with varying degrees of preference for different sterol substrates. Steryl-beta-glucosidase is found in various organisms, including plants, animals, and fungi, and plays important roles in diverse physiological processes, including:
1. **Sterol homeostasis:** Steryl-beta-glucosidase contributes to the regulation of sterol levels within cells by hydrolyzing sterol glycosides and releasing free sterols, ensuring optimal membrane fluidity and function.
2. **Plant development:** In plants, steryl-beta-glucosidase is involved in the biosynthesis and transport of sterols, which are essential for cell growth and development, as well as for the production of hormones and other signaling molecules.
3. **Hormone biosynthesis:** Steryl-beta-glucosidase has been linked to the biosynthesis of steroid hormones in animals. The enzyme may act on steroid glycosides, releasing free steroids that serve as precursors for the production of hormones like testosterone and estrogen.
4. **Pathogen defense:** In some organisms, steryl-beta-glucosidase activity is involved in the defense against pathogens. The enzyme can hydrolyze glycosidic bonds in the cell walls of pathogens, weakening their structural integrity and hindering their invasion.
Overall, steryl-beta-glucosidase is a crucial enzyme with a wide range of physiological roles, contributing to sterol metabolism, membrane integrity, cell signaling, and pathogen defense. Its activity ensures proper sterol homeostasis and facilitates essential cellular processes in diverse organisms.'
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Proteins (3)
| Protein | Definition | Taxonomy |
|---|---|---|
| Lysosomal acid glucosylceramidase | A lysosomal acid glucosylceramidase that is encoded in the genome of cow. [OMA:Q2KHZ8, PRO:DNx] | Bos taurus (cattle) |
| Non-lysosomal glucosylceramidase | A non-lysosomal glucosylceramidase that is encoded in the genome of human. [PRO:DNx, UniProtKB:Q9HCG7] | Homo sapiens (human) |
| Lysosomal acid glucosylceramidase | A lysosomal acid glucosylceramidase that is encoded in the genome of human. [PRO:DNx, UniProtKB:P04062] | Homo sapiens (human) |
Compounds (47)
| Compound | Definition | Classes | Roles |
|---|---|---|---|
| ambroxol | Ambroxol: A metabolite of BROMHEXINE that stimulates mucociliary action and clears the air passages in the respiratory tract. It is usually administered as the hydrochloride. | aromatic amine | |
| beta-glucono-1,5-lactone | beta-glucono-1,5-lactone: structure D-glucono-1,5-lactone : An aldono-1,5-lactone obtained from D-gluconic acid. | aldono-1,5-lactone; gluconolactone | animal metabolite; mouse metabolite |
| 1-deoxynojirimycin | 1-deoxy-nojirimycin: structure in first source duvoglustat : An optically active form of 2-(hydroxymethyl)piperidine-3,4,5-triol having 2R,3R,4R,5S-configuration. | 2-(hydroxymethyl)piperidine-3,4,5-triol; piperidine alkaloid | anti-HIV agent; anti-obesity agent; bacterial metabolite; EC 3.2.1.20 (alpha-glucosidase) inhibitor; hepatoprotective agent; hypoglycemic agent; plant metabolite |
| miglustat | miglustat : A hydroxypiperidine that is deoxynojirimycin in which the amino hydrogen is replaced by a butyl group. miglustat: a glucosylceramide synthase inhibitor | piperidines; tertiary amino compound | anti-HIV agent; EC 2.4.1.80 (ceramide glucosyltransferase) inhibitor |
| castanospermine | castanospermine : A tetrahydroxyindolizidine alkaloid that consists of octahydroindolizine having four hydroxy substituents located at positions 1, 6, 7 and 8 (the 1S,6S,7R,8R,8aR-diastereomer). castanospermine: indolizidine alkaloid from seeds of Australian legume, Castanospermum australe | indolizidine alkaloid | anti-HIV-1 agent; anti-inflammatory agent; EC 3.2.1.* (glycosidase) inhibitor; metabolite |
| n-phenylphthalimide | N-phenylphthalimide: structure given in first source | ||
| fagomine | fagomine: structure in first source | piperidines | |
| N-Benzylphthalimide | isoindoles | ||
| 1-(10h-phenothiazin-2-yl)ethanone | 1-(10H-phenothiazin-2-yl)ethanone: structure in first source | phenothiazines | |
| mor-14 | N-methyldeoxynojirimycin: glucosidase inhibitor | hydroxypiperidine; piperidine alkaloid; tertiary amino compound | anti-HIV agent; cardioprotective agent; EC 3.2.1.20 (alpha-glucosidase) inhibitor; plant metabolite |
| 1,2,3,4-tetrahydroxy-nor-tropane | calystegine B(2): RN given for (2-endo,3-exo,4-endo)-isomer; structure in first source | ||
| 2,5-dihydroxymethyl-3,4-dihydroxypyrrolidine | 2,5-dihydroxymethyl-3,4-dihydroxypyrrolidine: structure given in first source | dihydroxypyrrolidine | |
| homonojirimycin | homonojirimycin: inhibits alpha-glucosidase; RN given for (2R-(2alpha,3alpha,4beta,5alpha,6beta))-isomer; structure in first source | ||
| cyclophellitol | cyclophellitol: structure given in first source; isolated from Phellinus sp. | ||
| migalastat | migalastat: a potent inhibitor of glycolipid biosynthesis | piperidines | |
| calystegine a3 | calystegine A3: also inhibits beta-xylosidase; structure in first source | ||
| miglitol | piperidines | ||
| isofagomine | piperidines | ||
| 1,4-dideoxy-1,4-imino-d-arabinitol | |||
| n-nonyl-1-deoxynojirimycin | N-nonyldeoxynojirimycin : A hydroxypiperidine that is deoxynojirimycin (duvoglustat) in which the amino hydrogen is replaced by a nonyl group. | hydroxypiperidine; tertiary amino compound | antiviral agent; EC 3.2.1.20 (alpha-glucosidase) inhibitor; EC 3.2.1.45 (glucosylceramidase) inhibitor |
| 1-(1-benzimidazolyl)-3-(1-cyclohex-3-enylmethoxy)-2-propanol | benzimidazoles | ||
| 2-(2-phenylethylthio)-3-pyridinecarboxylic acid | aromatic carboxylic acid; pyridines | ||
| 4-(2-furanylmethyl)-3-(phenylmethyl)-1H-1,2,4-triazole-5-thione | benzenes | ||
| 2-[[4-(4-chloroanilino)-6-(1-pyrrolidinyl)-1,3,5-triazin-2-yl]amino]ethanol | dialkylarylamine; tertiary amino compound | ||
| 4-(benzenesulfonamido)-N-(5-ethyl-1,3,4-thiadiazol-2-yl)benzamide | sulfonamide | ||
| tamoxifen | stilbenoid; tertiary amino compound | angiogenesis inhibitor; antineoplastic agent; bone density conservation agent; EC 1.2.3.1 (aldehyde oxidase) inhibitor; EC 2.7.11.13 (protein kinase C) inhibitor; estrogen antagonist; estrogen receptor antagonist; estrogen receptor modulator | |
| 4-oxido-3-(4-phenoxyphenyl)-4a,5,6,7,8,8a-hexahydroquinoxalin-1-ium 1-oxide | aromatic ether | ||
| 2-[[4-(3-methylanilino)-6-(1-pyrrolidinyl)-1,3,5-triazin-2-yl]amino]ethanol | dialkylarylamine; tertiary amino compound | ||
| N-(1-benzylpiperidin-4-yl)-2-(pyridin-3-yl)quinazolin-4-amine | N-(1-benzylpiperidin-4-yl)-2-(pyridin-3-yl)quinazolin-4-amine : A member of the class of quinazolines that is quinazoline which is substituted by a pyridin-3-yl group and a (1-benzylpiperidin-4-yl)nitrilo group at positions 2 and 4, respectively. | aromatic amine; piperidines; pyridines; quinazolines; secondary amino compound; tertiary amino compound | |
| N-[4-methyl-2-(4-morpholinyl)-6-quinolinyl]cyclohexanecarboxamide | aminoquinoline | ||
| n-(5-adamantane-1-yl-methoxy-pentyl)deoxynojirimycin | |||
| ogt2378 | sinbaglustat: an antineopl agent; structure in first source | ||
| nnc 26-9100 | NNC 26-9100: structure in first source | aminopyridine | |
| 3-epi-fagomine | 3-epi-fagomine : A member of the class of hydroxypiperidines that is piperidine carrying a hydroxymethyl substituent at position 2 as well as two hydroxy substituents at positions 3 and 4 (the 2R,3R,4S-diastereomer). | amino monosaccharide; hydroxypiperidine; primary alcohol; secondary alcohol; secondary amino compound; triol | EC 3.2.1.10 (oligo-1,6-glucosidase) inhibitor; EC 3.2.1.23 (beta-galactosidase) inhibitor; plant metabolite |
| l-altro-1-deoxynojirimycin | L-altro-1-deoxynojirimycin: structure in first source | ||
| 2-[[4-[2-[(2-methylpropan-2-yl)oxy]anilino]-6-(1-pyrrolidinyl)-1,3,5-triazin-2-yl]amino]ethanol | aromatic ether | ||
| 2-[[4-(5-chloro-2-methoxyanilino)-6-(1-piperidinyl)-1,3,5-triazin-2-yl]amino]ethanol | methoxybenzenes; substituted aniline | ||
| 2-[[4-(4-methylanilino)-6-(1-pyrrolidinyl)-1,3,5-triazin-2-yl]amino]ethanol | dialkylarylamine; tertiary amino compound | ||
| 2-[[4-(2-chloroanilino)-6-(1-pyrrolidinyl)-1,3,5-triazin-2-yl]amino]ethanol | dialkylarylamine; tertiary amino compound | ||
| 2-[[4-(2-methoxyanilino)-6-(1-pyrrolidinyl)-1,3,5-triazin-2-yl]amino]ethanol | methoxybenzenes; substituted aniline | ||
| 2-[[4-(3-methoxyanilino)-6-(1-pyrrolidinyl)-1,3,5-triazin-2-yl]amino]ethanol | methoxybenzenes; substituted aniline | ||
| 2-[[4-(4-methoxyanilino)-6-(1-pyrrolidinyl)-1,3,5-triazin-2-yl]amino]ethanol | methoxybenzenes; substituted aniline | ||
| 2-[[4-(2-hydroxyethylamino)-6-(1-pyrrolidinyl)-1,3,5-triazin-2-yl]amino]phenol | dialkylarylamine; tertiary amino compound | ||
| 2-[[4-(2-phenoxyanilino)-6-(1-pyrrolidinyl)-1,3,5-triazin-2-yl]amino]ethanol | aromatic ether | ||
| 2-[[4-(1-pyrrolidinyl)-6-[2-(trifluoromethoxy)anilino]-1,3,5-triazin-2-yl]amino]ethanol | aromatic ether | ||
| 2-[[4-(5-chloro-2-ethoxyanilino)-6-(1-pyrrolidinyl)-1,3,5-triazin-2-yl]amino]ethanol | aromatic ether | ||
| 2-[[4-(5-chloro-2-propan-2-yloxyanilino)-6-(1-pyrrolidinyl)-1,3,5-triazin-2-yl]amino]ethanol | aromatic ether |