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.