Inhibition by ammonium ion of germination of unactivated spores of Bacillus cereus T induced by l-alanine and inosine.
Studies were carried out on the inhibitory effect of NH4+ on germination of spores of Bacillus cereus T induced by L-alanine and inosine. Kinetic analysis showed that NH4+ inhibited the germination competitively. Its inhibitory effect was greater when the unactivated spores had been preincubated with L-alanine. NH4+ did not inhibit the response of unactivated spores to L-alanine during preincubation. These results suggest that L-alanine sensitizes the spores to the inhibitory effect of NH4+.
D000409:Alanine / Q000494:pharmacology; D000643:Ammonium Chloride; D001409:Bacillus cereus / Q000187:drug effects* / Q000502:physiology; D002021:Buffers; D002412:Cations; D007288:Inosine / Q000494:pharmacology; D000644:Quaternary Ammonium Compounds / Q000494:pharmacology*; D013170:Spores
D002021:Buffers; D002412:Cations; D000644:Quaternary Ammonium Compounds; D000643:Ammonium Chloride; D007288:Inosine; D000409:Alanine