2.3.2.2	gamma-glutamyltransferase	gamma-glutamyl cycle	-	
3.4.13.18	cytosol nonspecific dipeptidase	gamma-glutamyl cycle	-	
3.5.2.9	5-oxoprolinase (ATP-hydrolysing)	gamma-glutamyl cycle	-	
4.3.2.9	gamma-glutamylcyclotransferase	gamma-glutamyl cycle	-