Nature Communications (Feb 2019)
Structural basis of ECF-σ-factor-dependent transcription initiation
Abstract
No structural data have been available for RNA polymerase holoenzymes or transcription initiation complexes that contain extracytoplasmic σ factors. Here the authors report the crystal structures of transcription initiation complexes comprising Mycobacterium tuberculosis RNA polymerase, extracytoplasmic σ factor σL and promoter DNA.