Temperature affects the formation of several enzymes permanently during long-term growth (e.g. penicillinases, proteases, respiratory enzymes) or transiently immediately after a heat or cold shock (RNA polymerase, aminoacyl-t-RNA synthetases, ribonucleases and others). The synthesis of developmentally regulated enzymes may be suppressed by temperatures permissive for growth but not for differentiation (e.g. sporulation). The control of enzyme formation by temperature may be operating at the level of template multiplication (plasmid DNA), transcription, translation or formation of low-molecular-weight effectors.

Institute of Microbiology Czechoslovak Academy of Sciences Prague

Cell viability and protein turnover in nongrowing Bacillus megaterium at sporulation suppressing temperature

Sporulation and synthesis of extracellular proteinases in Bacillus subtilis are more temperature-sensitive than growth

External factors involved in the regulation of synthesis of an extracellular proteinase in Bacillus megaterium: effect of temperature