Crystallographic studies on the binding of selectively deuterated LLD- and LLL-substrate epimers by isopenicillin N synthase
作者:Wei Ge、Ian J. Clifton、Jeanette E. Stok、Robert M. Adlington、Jack E. Baldwin、Peter J. Rutledge
DOI:10.1016/j.bbrc.2010.06.129
日期:2010.8
we report crystallographicstudies to investigate the binding of a truncated lll-substrate in the active site of IPNS. Two epimeric tripeptides have been prepared by solution phase peptide synthesis and crystallised with the enzyme. delta-l-alpha-Aminoadipoyl-l-cysteinyl-d-2-amino-3,3-dideuteriobutyrate (lld-ACd(2)Ab) has the same configuration as the natural substrate lld-ACV at each of its three stereocentres;