The Nonribosomal Peptide Synthetase Enzyme DdaD Tethers <i>N</i><sub>β</sub>-Fumaramoyl-<scp>l</scp>-2,3-diaminopropionate for Fe(II)/α-Ketoglutarate-Dependent Epoxidation by DdaC during Dapdiamide Antibiotic Biosynthesis
作者:Marie A. Hollenhorst、Stefanie B. Bumpus、Megan L. Matthews、J. Martin Bollinger、Neil L. Kelleher、Christopher T. Walsh
DOI:10.1021/ja1072367
日期:2010.11.10
The gene cluster from Pantoea agglomerans responsible for biosynthesis of the dapdiamide antibiotics encodes an adenylation-thiolation didomain protein, DdaD, and an Fe(II)/α-ketoglutarate-dependent dioxygenase homologue, DdaC. Here we show that DdaD, a nonribosomalpeptidesynthetase module, activates and sequesters N(β)-fumaramoyl-l-2,3-diaminopropionate as a covalently tethered thioester for subsequent