the greatest differences were in the glycylglycine competitive-inhibition constants : kidney gamma-glutamyltransferase was the most strongly inhibited and pancreatic enzyme the second most strongly inhibited by high concentrations of glycylglycine , with the liver and duodenal isoenzymes only slightly inhibited and the enzyme in serum not inhibited over the concentration range ( 0-150 mmol/l ) of glycylglycine used .
C0022173
isoenzymes
C0014442
enzyme