Heat Shock Genes: expressed in response to external stress
How is the transcription of heat shock genes activated in E. coli?
A) By antitermination, which allows transcription to extend into heat shock genes.
B) By the expression of an alternative sigma factor that forms an alternate RNA polymerase holoenzyme that specifically transcribes heat shock genes.
C) By inactivation of a heat shock repressor that induces transcription of heat shock genes.
D) By activation of a heat shock repressor protein that prevents transcription of non-heat shock genes.
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