title: Electrophoretic and 31P nuclear magnetic resonance evidence for alterations in conformation and net charge on phosphorylation and "aging" of alpha-chymotrypsin.
mesh_terms: D002918:Chymotrypsin; D002919:Chymotrypsinogen; D004355:Drug Stability; D004591:Electrophoresis, Polyacrylamide Gel; D009682:Magnetic Resonance Spectroscopy; D010766:Phosphorylation; D011487:Protein Conformation; D013997:Time Factors; D014357:Trypsin
chemical_list: D002919:Chymotrypsinogen; D002918:Chymotrypsin; D014357:Trypsin