| Literature DB >> 14677956 |
Anthony Stapon1, Rongfeng Li, Craig A Townsend.
Abstract
(5R)-Carbapenem-3-carboxylic acid is the simplest structurally among the naturally occurring carbapenem beta-lactam antibiotics. It is the produced from (3S,5S)-carbapenam-3-carboxylic acid utilizing a remarkable stereoinversion/desaturation process by CarC (carbapenem synthase), an alpha-ketoglutarate dependent non-heme iron oxygenase. In this communication, we demonstrate for the first time that the epimeric (3S,5R)-carbapenam-3-carboxylic acid is an intermediate in the overall catalytic cycle to the carbapenem antibiotic. The role of alpha-ketoglutarate in the stereoinversion and desaturation processes is also examined.Entities:
Mesh:
Substances:
Year: 2003 PMID: 14677956 DOI: 10.1021/ja037665w
Source DB: PubMed Journal: J Am Chem Soc ISSN: 0002-7863 Impact factor: 15.419