alkylcobalamin dealkylase EC#: 2.5.1.151; ChemWhat Code: 1378098
| Product Name | alkylcobalamin dealkylase |
| Example Structure |  |
| Synonyms | cblC, MMACHC |
| EC Number | 2.5.1.151 |
| CAS Registry Number | |
| Comments | This mammalian enzyme, which is cytosolic, can bind internalized alkylcobalamins and process them to cob(I)alamin using the thiolate of glutathione for nucleophilic displacement. The product remains bound to the protein, and, following its oxidation to cob(II)alamin, is transferred by the enzyme, together with its interacting partner MMADHC, directly to downstream enzymes involved in adenosylcobalamin and methylcobalamin biosynthesis. In addition to its dealkylase function, the enzyme also catalyse an entirely different decyanase reaction with cyanocobalamin [cf. EC 1.16.1.6, cyanocobalamin reductase (cyanide-eliminating)]. |
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