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Review
. 2008:37:337-52.
doi: 10.1146/annurev.biophys.37.032807.130008.

Structure of eukaryotic RNA polymerases

P Cramer  1 , K-J Armache, S Baumli, S Benkert, F Brueckner, C Buchen, G E Damsma, S Dengl, S R Geiger, A J Jasiak, A Jawhari, S Jennebach, T Kamenski, H Kettenberger, C-D Kuhn, E Lehmann, K Leike, J F Sydow, A Vannini
Affiliations
Review

Structure of eukaryotic RNA polymerases

P Cramer et al. Annu Rev Biophys. 2008.

Abstract

The eukaryotic RNA polymerases Pol I, Pol II, and Pol III are the central multiprotein machines that synthesize ribosomal, messenger, and transfer RNA, respectively. Here we provide a catalog of available structural information for these three enzymes. Most structural data have been accumulated for Pol II and its functional complexes. These studies have provided insights into many aspects of the transcription mechanism, including initiation at promoter DNA, elongation of the mRNA chain, tunability of the polymerase active site, which supports RNA synthesis and cleavage, and the response of Pol II to DNA lesions. Detailed structural studies of Pol I and Pol III were reported recently and showed that the active center region and core enzymes are similar to Pol II and that strong structural differences on the surfaces account for gene class-specific functions.

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