title: The nature of an amino acid residue at the active center of fumarase.
mesh_terms: D000478:Alkylation; D000596:Amino Acids / Q000032:analysis; D001322:Autoanalysis; D001665:Binding Sites / Q000032:analysis; D002262:Carboxy-Lyases / Q000032:analysis* / Q000037:antagonists & inhibitors; D006639:Histidine; D009206:Myocardium / Q000201:enzymology*
chemical_list: D000596:Amino Acids; D006639:Histidine; D002262:Carboxy-Lyases