PMID:16360025

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Citation

Vassylyev, DG and Artsimovitch, I (2005) Tracking RNA polymerase, one step at a time. Cell 123:977-9

Abstract

Although the structural analysis of transcription has attained atomic resolution, techniques to manipulate single molecules involved in transcription have lagged behind. A recent paper in Nature by Abbondanzieri et al. (2005) closes this gap. This study finds that individual molecules of bacterial RNA polymerase move in single base-pair steps and concludes that RNA polymerase acts as a Brownian ratchet that is driven forward by the binding of incoming nucleoside triphosphates.

Links

PubMed Online version:10.1016/j.cell.2005.11.030

Keywords

Base Pairing; Binding Sites/genetics; Catalytic Domain/genetics; DNA/genetics; DNA/metabolism; DNA-Directed RNA Polymerases/metabolism; Escherichia coli/enzymology; Models, Biological; Nucleotides/genetics; Nucleotides/metabolism; Templates, Genetic; Transcription, Genetic

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