Question

How many domains are present in a transcription factor?

(a) 1

(b) 2

(c) 3

(d) 4

I have been asked this question by my college director while I was bunking the class.

I want to ask this question from Gene Expression Control topic in section Control of Gene Expression of Cell Biology

Answer 1

Right option is (b) 2

To explain I would say: The transcription factors usually contain two domains, activation domain that interacts with other DNA-binding proteins thereby regulating transcription, and DNA-binding domain that binds to the DNA sequence.