The paragraph below gives a description about transcription. Which is the correct description among them? (a) Enzyme involved in transcription is RNA polymerase-II, which consists of 5 polypeptides α, β, β’, σ and ω. Core enzyme recognizes promoter site while σ factor takes part in chain elongation. (b). Initiation starts with help of core enzymes of RNA polymerase enzyme. (c) Elongation is done by σ factor, which moves along the sense strand. (d) In prokaryotes, termination is done by rho factor while in eukaryotes; poly A tail is responsible for termination at 3’.
(a) Enzyme involved in transcription is RNA polymerase-II, which consists 5 polypeptides α, β, β’, σ and ω. σ factor recognizes promoter site while core enzyme takes part in the chain elongation. (b). Initiation starts with help of σ factor of RNA polymerase enzyme. (c) Elongation is done by core enzyme, which moves along the sense strand. (d) In prokaryotes, termination is done by ρ factor while in eukaryotes; poly A tail is responsible for termination at 3’.