Which statement is FALSE with respect to different $\sigma$ (sigma) subunits in bacterial RNA polymerase?
A) Specific amino acids in $\sigma$ subunits will interact with the polymerase.
B) $\sigma$ subunits will specifically interact with DNA sequences spanning approximately three turns of the helix.
C) $\sigma$ subunits interact with both DNA and the RNA polymerase in the elongation form.
D) Multiple $\sigma$ subunits exist in E. coli.
E) The binding of NusA is competitive with the binding of $\sigma$ subunits in E. coli.

Question

Quizplus · Accepted Answer

Sigma factors (σ factors) are involved in the initiation phase of transcription in bacteria, not the elongation phase. They help the RNA polymerase recognize the promoter regions of genes but dissociate from the RNA polymerase once the elongation phase begins.

Which Statement Is FALSE with Respect to Different σ\sigmaσ (Sigma) Subunits in Bacterial RNA Polymerase? A) Specific Amino Acids

Which Statement Is FALSE with Respect to Different $\sigma$ (Sigma) Subunits in Bacterial RNA Polymerase?
A) Specific Amino Acids