| cycloartenol synthase | |||||||||
|---|---|---|---|---|---|---|---|---|---|
| Identifiers | |||||||||
| EC no. | 5.4.99.8 | ||||||||
| CAS no. | 9075-25-6 | ||||||||
| Databases | |||||||||
| IntEnz | IntEnz view | ||||||||
| BRENDA | BRENDA entry | ||||||||
| ExPASy | NiceZyme view | ||||||||
| KEGG | KEGG entry | ||||||||
| MetaCyc | metabolic pathway | ||||||||
| PRIAM | profile | ||||||||
| PDB structures | RCSB PDB PDBe PDBsum | ||||||||
| Gene Ontology | AmiGO / QuickGO | ||||||||
| |||||||||
In enzymology, a cycloartenol synthase (EC 5.4.99.8) is an enzyme that catalyzes the chemical reaction
- (S)-2,3-epoxysqualene cycloartenol
Hence, this enzyme has one substrate, (S)-2,3-epoxysqualene, and one product, cycloartenol.
This enzyme is an oxidosqualene cyclase and belongs to the family of isomerases, specifically those intramolecular transferases transferring other groups. This enzyme participates in biosynthesis of steroids.
Nomenclature[edit]
The systematic name of this enzyme class is:
- (S)-2,3-epoxysqualene mutase (cyclizing, cycloartenol-forming).
Other names in common use include:
- 2,3-epoxysqualene cycloartenol-cyclase
- squalene-2,3-epoxide-cycloartenol cyclase
- 2,3-epoxysqualene cycloartenol-cyclase
- 2,3-epoxysqualene-cycloartenol cyclase
- 2,3-oxidosqualene-cycloartenol cyclase
References[edit]
- Rees HH, Goad LJ, Goodwin TW (1969). "2,3-oxidosqualene cycloartenol cyclase from Ochromonas malhamensis". Biochim. Biophys. Acta. 176 (4): 892–4. doi:10.1016/0005-2760(69)90274-4. PMID 5797101.
Well, that’s interesting to know that Psilotum nudum are known as whisk ferns. Psilotum nudum is the commoner species of the two. While the P. flaccidum is a rare species and is found in the tropical islands. Both the species are usually epiphytic in habit and grow upon tree ferns. These species may also be terrestrial and grow in humus or in the crevices of the rocks.
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