title: Allosteric activation of HutP protein, that regulates transcription of hut operon in Bacillus subtilis, mediated by various analogs of histidine.
abstract: HutP is an RNA-binding protein which regulates the expression of the histidine utilization (hut) operon in Bacillus subtilis by binding to cis-acting regulatory sequences on the hut mRNA in the presence of L-histidine. In the case of HutP-RNA interactions, L-histidine plays an allosteric activation role i.e. only the activated HutP specifically recognize the hut mRNA. In the present study, we analyzed various analogs of L-histidine to evaluate the important functional groups of L-histidine that is responsible for the activation of HutP. Our analysis clearly suggests that imidazole group of a L-histidine plays a vital role for the activation. Our analysis also revealed efficient analogs of L-histidine for the activation, for example, L-histidine beta-naphthylamide and L-Histidine benzyl ester.
mesh_terms: D000494:Allosteric Regulation; D001412:Bacillus subtilis / Q000235:genetics*; D001426:Bacterial Proteins / Q000235:genetics / Q000378:metabolism*; D001483:Base Sequence; D006639:Histidine / Q000031:analogs & derivatives / Q000378:metabolism*; D009876:Operon
chemical_list: D001426:Bacterial Proteins; D006639:Histidine