What would the result be if a specific sigma subunit were mutated?
A)Nothing would result: sigma is not essential.
B)RNA polymerase would still bind at specific sites,but elongation would fail.
C)RNA polymerase would fail to initiate transcription at the promoter specific to the sigma subunit.
D) The core enzyme would not be stable.

Question

Quizplus · Accepted Answer

The sigma subunit assists RNA polymerase in binding to a specific promoter sequence. If the sigma subunit were mutated, RNA polymerase would no longer be able to initiate transcription at the promoter specific to the sigma subunit.

What Would the Result Be If a Specific Sigma Subunit