the enzymes from these two sources are very similar with respect to initial velocity kinetic constants , ph optima of the transpeptidation and autotransfer reactions , heat stability , competitive inhibition by glutathione of the colorimetric assay in which gamma-glutamyl-4-nitroanilide is substrate , stability of catalytic activity to trypsinization , and relative rates of transfer of the gamma-glutamyl moiety from gamma-glutamyl-4-nitroanilide and l- [ glycine-2-3/ ] glutathione to some amino acids and small peptides .
C0017890
glycine
C0002520
amino acids