Cephalosporin C biosynthesis; a branched pathway sensitive to a kinetic isotope effect
作者:Jack E. Baldwin、Robert M. Adlington、Robin T. Aplin、Nicholas P. Crouch、Graham Knight、Christopher J. Schofield
DOI:10.1039/c39870001651
日期:——
deacetoxycephalosporin C/deacetylcephalosporin C synthetase activity from Cephalosporium acremonium CO 728 gave, along with the normal product deacetoxycephalosporin C, another β-lactam metabolite namely 7β-[(R)-5-amino-5-carboxypentanoyl]-3β-hydroxy-3α-methyl[4-2H)-cepham-4α-carboxylic acid. This material arises as a result of a deuterium isotopeeffect on a branchedpathway in the enzymic mechanism