title: Effect of decoyinine on the regulation of alpha-amylase synthesis in Bacillus subtilis.
abstract: Decoyinine, an inhibitor of GMP synthetase, allows sporulation in Bacillus subtilis to initiate and proceed under otherwise catabolite-repressing conditions. The effect of decoyinine on alpha-amylase synthesis in B. subtilis, an event which exhibits regulatory features resembling sporulation initiation, was examined. Decoyinine did not overcome catabolite repression of alpha-amylase synthesis in a wild-type strain of B. subtilis but did cause premature and enhanced synthesis in a mutant strain specifically blocked in catabolite repression of alpha-amylase synthesis. Decoyinine had no effect on alpha-amylase enzymatic activity. Thus, it appears that the catabolite control mechanisms governing alpha-amylase synthesis and sporulation in B. subtilis differ in their responses to decoyinine and hence must consist at least partially of separate components.
mesh_terms: D000241:Adenosine / Q000031:analogs & derivatives / Q000494:pharmacology; D000900:Anti-Bacterial Agents / Q000494:pharmacology*; D001412:Bacillus subtilis / Q000187:drug effects* / Q000201:enzymology / Q000502:physiology; D013171:Spores, Bacterial; D000516:alpha-Amylases / Q000096:biosynthesis*
chemical_list: D000900:Anti-Bacterial Agents; C012182:angustmycin A; D000516:alpha-Amylases; D000241:Adenosine