Target type: molecularfunction
Catalysis of the reaction: D-galactosyl-N-acylsphingosine + H2O = D-galactose + N-acylsphingosine. [EC:3.2.1.46]
Galactosylceramidase activity refers to the enzymatic hydrolysis of galactosylceramide (GalCer), a major sphingolipid component of myelin, the insulating sheath surrounding nerve fibers. This enzymatic activity is crucial for the proper breakdown and recycling of GalCer within the nervous system. The enzyme responsible for this activity, galactosylceramidase, cleaves the glycosidic bond between galactose and ceramide, releasing free galactose and ceramide. This breakdown process plays a vital role in the maintenance of myelin integrity and neuronal function. Specifically, the enzyme facilitates the removal of excess or damaged GalCer from myelin, preventing its accumulation and potential disruption of myelin structure. Furthermore, the released ceramide can be reused in the synthesis of other sphingolipids, contributing to the dynamic turnover of myelin components. Defects in galactosylceramidase activity can lead to the accumulation of GalCer in the nervous system, causing a range of neurological disorders including Krabbe disease, a rare, fatal genetic disease characterized by progressive destruction of myelin.'
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| 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) |
| Galactocerebrosidase | A galactocerebrosidase that is encoded in the genome of human. [PRO:DNx, UniProtKB:P54803] | Homo sapiens (human) |
| Non-lysosomal glucosylceramidase | A non-lysosomal glucosylceramidase that is encoded in the genome of human. [PRO:DNx, UniProtKB:Q9HCG7] | Homo sapiens (human) |
| Cytosolic beta-glucosidase | A cytosolic beta-glucosidase that is encoded in the genome of human. [PRO:DNx, UniProtKB:Q9H227] | Homo sapiens (human) |
| Galactocerebrosidase | A galactocerebrosidase that is encoded in the genome of human. [PRO:DNx, UniProtKB:P54803] | Homo sapiens (human) |
| Lactase-phlorizin hydrolase | A lactase/phlorizin hydrolase that is encoded in the genome of human. [PRO:DNx, UniProtKB:P09848] | 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) |
| 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 | ||
| 2,5-dideoxy-2,5-imino-d-glucitol | 2,5-dideoxy-2,5-imino-D-glucitol: structure in first source | ||
| validamine | validamine : An amino cyclitol consisting of 1D-chiro-inositol lacking the 6-hydroxy group and having those at positions 1 and 5 replaced by amino and hydroxymethyl groups respectively. validamine: RN given from CA Index Guide; RN not in Chemline 11/84; structure given in first source | amino cyclitol | |
| 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 |