Target type: molecularfunction
Catalysis of the reaction: H2O + sphingomyelin = ceramide + choline phosphate + H+. [EC:3.1.4.12, RHEA:19253]
Sphingomyelin phosphodiesterase activity is a crucial enzymatic function involved in the breakdown of sphingomyelin, a major phospholipid component of cell membranes. This hydrolysis reaction involves the cleavage of the phosphodiester bond between the choline head group and the ceramide moiety within the sphingomyelin molecule. The resulting products are ceramide and phosphocholine. This activity plays a key role in various cellular processes including signal transduction, membrane remodeling, and apoptosis. Sphingomyelin phosphodiesterase activity is highly regulated and can be modulated by various factors, including pH, calcium levels, and protein-protein interactions. Dysregulation of this activity has been implicated in various disease states, including neurodegenerative disorders, cancer, and inflammatory conditions.'
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| Protein | Definition | Taxonomy |
|---|---|---|
| Sphingomyelin phosphodiesterase | [no definition available] | Bos taurus (cattle) |
| Sphingomyelin phosphodiesterase | A sphingomyelin phosphodiesterase that is encoded in the genome of human. [PRO:DNx, UniProtKB:P17405] | Homo sapiens (human) |
| Sphingomyelin phosphodiesterase 3 | A sphingomyelin phosphodiesterase 3 that is encoded in the genome of human. [PRO:DNx, UniProtKB:Q9NY59] | Homo sapiens (human) |
| Sphingomyelin phosphodiesterase | A sphingomyelin phosphodiesterase that is encoded in the genome of human. [PRO:DNx, UniProtKB:P17405] | Homo sapiens (human) |
| Sphingomyelin phosphodiesterase 2 | A sphingomyelin phosphodiesterase 2 that is encoded in the genome of human. [PRO:DNx, UniProtKB:O60906] | Homo sapiens (human) |
| Compound | Definition | Classes | Roles |
|---|---|---|---|
| chlorpromazine | chlorpromazine : A substituted phenothiazine in which the ring nitrogen at position 10 is attached to C-3 of an N,N-dimethylpropanamine moiety. Chlorpromazine: The prototypical phenothiazine antipsychotic drug. Like the other drugs in this class chlorpromazine's antipsychotic actions are thought to be due to long-term adaptation by the brain to blocking DOPAMINE RECEPTORS. Chlorpromazine has several other actions and therapeutic uses, including as an antiemetic and in the treatment of intractable hiccup. | organochlorine compound; phenothiazines; tertiary amine | anticoronaviral agent; antiemetic; dopaminergic antagonist; EC 3.4.21.26 (prolyl oligopeptidase) inhibitor; phenothiazine antipsychotic drug |
| fendiline | Fendiline: Coronary vasodilator; inhibits calcium function in muscle cells in excitation-contraction coupling; proposed as antiarrhythmic and antianginal agents. | diarylmethane | |
| imipramine | imipramine : A dibenzoazepine that is 5H-dibenzo[b,f]azepine substituted by a 3-(dimethylamino)propyl group at the nitrogen atom. Imipramine: The prototypical tricyclic antidepressant. It has been used in major depression, dysthymia, bipolar depression, attention-deficit disorders, agoraphobia, and panic disorders. It has less sedative effect than some other members of this therapeutic group. | dibenzoazepine | adrenergic uptake inhibitor; antidepressant; EC 3.4.21.26 (prolyl oligopeptidase) inhibitor |
| inositol 2,4,6-triphosphate | |||
| cambinol | cambinol: inhibitor of human silent information regulator 2 enzymes; structure in first source | ||
| 2-(1-benzo[e]benzofuranyl)-N-[4-methoxy-3-(4-morpholinylsulfonyl)phenyl]acetamide | naphthofuran | ||
| mangostin | alpha-mangostin : A member of the class of xanthones that is 9H-xanthene substituted by hydroxy group at positions 1, 3 and 6, a methoxy group at position 7, an oxo group at position 9 and prenyl groups at positions 2 and 8. Isolated from the stems of Cratoxylum cochinchinense, it exhibits antioxidant, antimicrobial and antitumour activities. mangostin: xanthone from rind of Garcinia mangostana Linn. fruit | aromatic ether; phenols; xanthones | antimicrobial agent; antineoplastic agent; antioxidant; plant metabolite |
| scyphostatin | scyphostatin: a neutral sphingomyelinase inhibitor isolated from Trichopeziza mollissima; structure in first source | cyclohexenones |