3-amino-4-hydroxybenzoate synthase EC#: 4.1.99.20; ChemWhat Code: 1382218
| Product Name | 3-amino-4-hydroxybenzoate synthase |
| Example Structure |  |
| Synonyms | 3,4-AHBA synthase, griH |
| EC Number | 4.1.99.20 |
| CAS Registry Number | |
| Comments | Requires Mn2+?for maximum activity. The reaction is suggested to take place in several steps. Schiff base formation, double bond migration and dephosphorylation followed by ring opening and closing to form a pyrrolidine ring, and finally dehydration to form the product 3-amino-4-hydroxybenzoate. In the bacterium?Streptomyces griseus?the enzyme is involved in biosynthesis of grixazone, a yellow pigment that contains a phenoxazinone chromophore. |
| Cofactor | Mn2+ |
| History | |
| Reactions | 2-amino-4,5-dihydroxy-6-oxo-7-(phosphooxy)heptanoate = 3-amino-4- hydroxybenzoate + phosphate + 2 H(2)O. |
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