title: Chemical modification of tryptophan and histidine residues in semi-alkaline proteinase from Aspergillus melleus.
mesh_terms: D001230:Aspergillus / Q000201:enzymology*; D001974:Bromosuccinimide; D055598:Chemical Phenomena; D002621:Chemistry; D006639:Histidine / Q000032:analysis*; D005779:Immunodiffusion; D010447:Peptide Hydrolases / Q000032:analysis*; D011487:Protein Conformation; D014364:Tryptophan / Q000032:analysis*
chemical_list: D006639:Histidine; D014364:Tryptophan; D010447:Peptide Hydrolases; D001974:Bromosuccinimide