AMB antimetabolite synthase AmbB

UniProtKB accession:  Q9I1H0

Grouped By:  Matching UniProtKB accession

UniProtKB description:  Involved in the biosynthesis of the antimetabolite L-2-amino-4-methoxy-trans-3-butenoic acid (AMB), a non-proteinogenic amino acid which is toxic for prokaryotes and eukaryotes (PubMed:20543073, PubMed:25814981). Adenylates L-alanine and loads it onto its peptidyl carrier domain via a thioester linkage to the phosphopanthetheine moiety. In addition, loads activated L-Ala in trans onto the second carrier domain of AmbE (PubMed:25814981). Can also activate L-Ser, Gly and D-Ala, albeit to a lower extent (PubMed:25814981). The condensation domain of AmbB probably condenses the activated L-Ala and the L-Glu loaded on AmbE to form a L-Glu-L-Ala dipeptide at the first carrier domain of AmbE (PubMed:25814981).