Rho helicase terminates transcription by:___________
a) catalyzing the formation of RNA hairpins that displace RNA polymerase.
b) melting the DNA helix to reveal a transcription termination sequence.
c) melting the RNA-DNA duplex, which causes RNA polymerase to fall off.
d) melting the DNA helix, which prevents RNA polymerase from advancing.

Respuesta :

In the final step of transcription termination, Rho helicase unwinds the RNA transcript from the genomic DNA [2], acting as a bona fide helicase that couples ATP hydrolysis to nucleic acid unwinding [20]. Rho catalyzed unwinding may be performed in an analogous manner to other ring-shaped helicases