A single PLP-dependent enzyme PctV catalyzes the transformation of 3-dehydroshikimate into 3-aminobenzoate in the biosynthesis of pactamycin.

ABSTRACT

Natural amino donation A PLP-dependent aminotransferase PctV, encoded in the pactamycin biosynthetic gene cluster, was found to catalyze the formation of 3-aminobenzoate from 3-dehydroshikimate with L-glutamate as the amino donor. The PctV reaction comprises a transamination and two dehydration reactions. This is the first report of a simple 3-ABA synthase in nature.