Lock and key to transcription: σ-DNA interaction.

Liu, Xin; Bushnell, David A; Kornberg, Roger D · Cell · 2011

basic_science · Level V

Where this comes from

Abstract

How does RNA polymerase recognize a promoter in duplex DNA? How are the DNA strands pried apart to enable RNA synthesis? A crystal structure by Feklistov and Darst unexpectedly reveals that these two processes are interconnected.