Compare and contrast sigma factors with activator proteins i

Compare and contrast sigma factors with activator proteins in terms of their roles in gene regulation.

Solution

They Plays a major role in the gene regulations.

Sigma factors plays an important role in initiation of transcription in bacteria. It helps in proper binding of the enzyme RNA Polymerase which helps in starting of transcription. It helps in proper binding of the enzyme to the DNA till the end.. Hence the gene function is regulated..

Activator Proteins are very important in gene regulations ie in transcription process means formation of RNA from DNA.. These proteins binds to the ENZYME-DNA complex and hence increase and enhances the rate of transcription. It binds to the activator site results in increase in rate of transcription.