title: Evidence for an acyl intermediate in pepsin-catalysed reactions.
mesh_terms: D000215:Acylation; D002247:Carbon Isotopes; D002384:Catalysis; D007328:Insulin; D007930:Leucine / Q000378:metabolism; D010103:Oxygen Isotopes; D010407:Penicillium / Q000201:enzymology; D010434:Pepsin A
chemical_list: D002247:Carbon Isotopes; D007328:Insulin; D010103:Oxygen Isotopes; D010434:Pepsin A; D007930:Leucine