title: Modification of carboxyl groups in pepsin.
mesh_terms: D000409:Alanine; D000588:Amines; D000818:Animals; D001224:Aspartic Acid; D002234:Carbodiimides; D055598:Chemical Phenomena; D002621:Chemistry; D005971:Glutamates; D006454:Hemoglobins; D006863:Hydrogen-Ion Concentration; D009025:Morpholines; D009578:Nitrobenzenes; D010434:Pepsin A; D010649:Phenylalanine; D011485:Protein Binding; D013329:Structure-Activity Relationship; D013552:Swine; D014105:Tosyl Compounds; D014443:Tyrosine
chemical_list: D000588:Amines; D002234:Carbodiimides; D005971:Glutamates; D006454:Hemoglobins; D009025:Morpholines; D009578:Nitrobenzenes; D014105:Tosyl Compounds; D001224:Aspartic Acid; D014443:Tyrosine; D010649:Phenylalanine; D010434:Pepsin A; D000409:Alanine