Ethoxyformylation of proteins. Reaction of ethoxyformic anhydride with alpha-chymotrypsin, pepsin, and pancreatic ribonuclease at pH 4.

Amino Acids/analysis Anhydrides Animals Carbon Isotopes Cattle Chemical Phenomena Chemistry Chymotrypsin Enzyme Activation Enzyme Precursors Esters Formates Histidine Hydrogen-Ion Concentration Hydroxylamines Imidazoles Kinetics Nitrobenzenes Osmolar Concentration Pancreas/enzymology Pepsin A/analysis Proteins Ribonucleases/antagonists & inhibitors Sulfonic Acids Swine Time Factors

Amino Acids Anhydrides Carbon Isotopes Enzyme Precursors Esters Formates Hydroxylamines Imidazoles Nitrobenzenes Proteins Sulfonic Acids Histidine Ribonucleases Chymotrypsin Pepsin A