title: 4-Nitro-L-histidine as a substrate for histidine ammonia-lyase: the role of beta-hydrogen acidity in the rate-limiting step.
mesh_terms: D000642:Ammonia-Lyases / Q000378:metabolism*; D006639:Histidine / Q000031:analogs & derivatives*; D006638:Histidine Ammonia-Lyase / Q000378:metabolism*; D006863:Hydrogen-Ion Concentration; D007700:Kinetics; D010084:Oxidation-Reduction; D011549:Pseudomonas / Q000201:enzymology; D013056:Spectrophotometry, Ultraviolet; D013379:Substrate Specificity
chemical_list: C019500:4-nitro-L-histidine; D006639:Histidine; D000642:Ammonia-Lyases; D006638:Histidine Ammonia-Lyase