| 英文名 |
plant 4alpha-monomethylsterol monooxygenase |
| Example Structure |
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| 别名 |
4alpha-methyl oxidase, 4alpha-methyl-DELTA7-sterol-4alpha-methyl-oxidase, 4alpha-methylsterol C4 oxidase, 4alpha-methylsterol-4alpha-methyl-oxidase, 4alpha-MSO, methylsterol monooxygenase 2, SMO2, SMO2-1, SMO2-2, sterol-4alpha-methyl oxidase 2 |
| EC Number |
1.14.18.11 |
| CAS编号 |
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| Comments |
This plant enzyme catalyses a step in the biosynthesis of sterols. It acts on the methyl group of the 4¦Á-methylated intermediates 24-ethylidenelophenol and 24-methylidenelophenol and catalyses three successive oxidations, turning it into a carboxyl group. The carboxylate is subsequently removed by EC 1.1.1.418, plant 3¦Â-hydroxysteroid-4¦Á-carboxylate 3-dehydrogenase (decarboxylating). Unlike the fungal/animal enzyme EC 1.14.18.9, 4¦Á-methylsterol monooxygenase, this enzyme is not able to act on 4,4-dimethylated substrates. That activity, which occurs earlier in the pathway, is performed in plants by a second enzyme, EC 1.14.18.10, plant 4,4-dimethylsterol C-4¦Á-methyl-monooxygenase. |
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