A promoter is a DNA sequence that is adjacent to a gene and required for transcription. Promoters contain short consensus sequences that are important in the initiation of transcription.
-What binds to the -10 consensus sequence found in most bacterial promoters?
A) The holoenzyme (core enzyme + sigma)
B) The sigma factor alone
C) The core enzyme alone
D) mRNA

Question

Quizplus · Accepted Answer

The holoenzyme, which includes the core enzyme and the sigma factor, binds to the -10 consensus sequence in bacterial promoters to initiate transcription. The sigma factor is crucial for recognizing the -10 and -35 regions, but it functions as part of the holoenzyme.

A Promoter Is a DNA Sequence That Is Adjacent to a Gene