Links

Tools

Export citation

Search in Google Scholar

Evolution of Complex RNA Polymerases: The Complete Archaeal RNA Polymerase Structure

Journal article published in 2009 by Yakov Korkhin, Ulug M. Unligil, Otis Littlefield, Pamlea J. Nelson, David I. Stuart, Paul B. Sigler, Stephen D. Bell, Nicola G. A. Abrescia ORCID
This paper is available in a repository.
This paper is available in a repository.

Full text: Download

Question mark in circle
Preprint: policy unknown
Upload
Question mark in circle
Postprint: policy unknown
Upload
Question mark in circle
Published version: policy unknown
Upload

Abstract

The archaeal RNA polymerase (RNAP) shares structural similarities with eukaryotic RNAP II but requires a reduced subset of general transcription factors for promoter-dependent initiation. To deepen our knowledge of cellular transcription, we have determined the structure of the 13-subunit DNA-directed RNAP from Sulfolobus shibatae at 3.35 Å resolution. The structure contains the full complement of subunits, including RpoG/Rpb8 and the equivalent of the clamp-head and jaw domains of the eukaryotic Rpb1. Furthermore, we have identified subunit Rpo13, an RNAP component in the order Sulfolobales, which contains a helix-turn-helix motif that interacts with the RpoH/Rpb5 and RpoA′/Rpb1 subunits. Its location and topology suggest a role in the formation of the transcription bubble.