peptidyl-glutamate 4-carboxylase EC#: 4.1.1.90; ChemWhat Code: 1381999
| Product Name | peptidyl-glutamate 4-carboxylase |
| Example Structure |  |
| Synonyms | carboxylase, Ci-GGC, gamma glutamyl carboxylase, gamma-carboxylase, gamma-glutamyl carboxylase, GGCX, glutamate carboxylase, matrix gamma-carboxyglutamate protein, matrix Gla protein, peptidyl-glutamate 4-carboxylase, peptidyl-glutamate 4-carboxylase (2-methyl-3-phytyl-1,4-naphthoquinone-epoxidizing), two-chain carboxylase, vitamin K carboxylase, vitamin K-dependent carboxylase, vitamin K-dependent gamma-glutamyl carboxylase, vitamin K-dependent gamma-glutamylcarboxylase, VKC, VKD carboxylase |
| EC Number | 4.1.1.90 |
| CAS Registry Number | |
| Comments | The enzyme can use various vitamin-K derivatives, including menaquinol, but does not contain iron. The mechanism appears to involve the generation of a strong base by oxygenation of vitamin K. It catalyses the post-translational carboxylation of glutamate residues of several proteins of the blood-clotting system. 9-12 glutamate residues are converted to 4-carboxyglutamate (Gla) in a specific domain of the target protein. The 4-pro-S?hydrogen of the glutamate residue is removed [5] and there is an inversion of stereochemistry at this position [6]. |
| Cofactor | |
| History | |
| Reactions | [Peptidyl]-4-carboxyglutamate + 2,3-epoxyphylloquinone + H(2)O = [peptidyl]-glutamate + CO(2) + O(2) + phylloquinol. |
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