title: Regulatory responses of arginine deiminase in whole cells of Clostridium sporogenes.
abstract: Arginine deiminase (EC 3.5.3.6) has been shown to have regulatory properties. The activity was observed to be sigmoidal with respect to substrate concentrations. Addition of histidine to the system caused the abolition of sigmoidal responses. The regulatory properties of the enzyme as well as the desensitising action of histidine could also be demonstrated with whole cell suspensions. The pH of the system also seemed to influence modulations in the enzyme.
mesh_terms: D001120:Arginine / Q000494:pharmacology; D003013:Clostridium / Q000187:drug effects / Q000201:enzymology*; D006639:Histidine / Q000494:pharmacology; D006863:Hydrogen-Ion Concentration; D006867:Hydrolases / Q000378:metabolism*; D007700:Kinetics
chemical_list: D006639:Histidine; D001120:Arginine; D006867:Hydrolases; C019723:arginine deiminase