title: A hydrogen-bond network at the active site of subtilisin BPN'.
mesh_terms: D000595:Amino Acid Sequence; D001407:Bacillus / Q000201:enzymology; D001665:Binding Sites; D055598:Chemical Phenomena; D002621:Chemistry; D003461:Crystallography; D010450:Endopeptidases; D006859:Hydrogen; D008961:Models, Structural; D011487:Protein Conformation; D013329:Structure-Activity Relationship
chemical_list: D006859:Hydrogen; D010450:Endopeptidases