Evolutionary analysis of prokaryotic heat-shock transcription regulatory protein σ³².

Abstract excerpt

Heat-stress to any living cell is known to trigger a universal defense response, called heat-shock response, with rapid induction of tens of different heat-shock proteins. Bacterial heat-shock genes are transcribed by the σ(32)-bound RNA polymerase instead of the normal σ(70)-bound RNA polymerase. In this study, the diversity in sequence, variation in secondary structure and function amongst the different...

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