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J Bacteriol. 1972 April; 110(1): 26-34
Copyright © 1972 American Society for Microbiology. All Rights Reserved.

Studies on Escherichia coli Enzymes Involved in the Synthesis of Uridine Diphosphate-N-Acetyl-Muramyl-Pentapeptide

Laboratory for Microbiology, State University, Catharijnesingel 59, Utrecht, The Netherlands

ABSTRACT

The specific activities of L-alanine:D-alanine racemase, D-alanine:D-alanine ligase, and the L-alanine, D-glutamic acid, meso-diaminopimelic acid, and D-alanyl-D-alanine adding enzymes were followed during growth of Escherichia coli. The specific activities were nearly independent of the growth phase. D-Alanine:D-alanine ligase was inhibited by D-alanyl-D-alanine, D-cycloserine, glycine, and glycyl-glycine. L-Alanine:D-alanine racemase was found to be sensitive to D-cycloserine, glycine, and glycyl-glycine. The L-alanine adding enzyme was inhibited by glycine and glycyl-glycine.

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