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Structure and Basal Transcription Complex of RNA Polymerase II Core Promoters in the Mammalian Genome: An Overview

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Abstract

The mammalian core promoter is a sophisticated and crucial component for the regulation of transcription mediated by the RNA polymerase II. It is generally defined as the minimal region of contiguous DNA sequence that is sufficient to accurately initiate a basal level of gene expression. The core promoter represents the ultimate target for nucleation of a functional pre-initiation complex composed of the RNA polymerase II and associated general transcription factors. Among the more than 40 distinct proteins assembling the basal transcription complex, TFIID plays a central role in recognizing and binding specific core promoter elements to support creating an environment that facilitates transcription initiation. Several common DNA motifs, like the TATA box, initiator region, or the downstream promoter element, are found in a subset of core promoters present in various combinations. Another class of promoters that is usually absent of a TATA box is constituted by the so-called CpG islands, which are associated with the majority of protein-coding genes within the mammalian genome.

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  1. Department of Biotechnology, Austrian Center of Biopharmaceutical Technology, University of Natural Resources and Applied Life Sciences, Vienna, Austria

    Martina Baumann, Jens Pontiller & Wolfgang Ernst

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  1. Martina Baumann
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Baumann, M., Pontiller, J. & Ernst, W. Structure and Basal Transcription Complex of RNA Polymerase II Core Promoters in the Mammalian Genome: An Overview. Mol Biotechnol 45, 241–247 (2010). https://doi.org/10.1007/s12033-010-9265-6

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