4.1.1.18	additional information	RpoS is not required either for induction of the cadBA operon or for activity of the Cad system in Escherichia coli starved of phosphate	
4.1.1.18	additional information	the enzyme is encoded in an acid-induced operon	
4.1.1.18	additional information	the enzyme is upregulated by CadC in response to acid stress, and is also induced by SoxR in response to superoxide stress, SoxR binds directly to the promoter region of the cadBA operon, coding for a lysine-cadaverine antiporter, CadB, and the lysine decarboxylase CadA	
4.1.1.18	sulfhydryl groups	the enzyme contains six sulfhydryl groups