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    Genomics. 1996 Oct 1;37(1):135-9.

    Molecular cloning of RPA2, the gene encoding the second largest subunit of mouse RNA polymerase I.

    Seither P, Grummt I.

    Division of Molecular Biology of the Cell II, German Cancer Research Center, Heidelberg, Germany.

    We have cloned the cDNA encoding the second largest subunit of RNA polymerase I, termed RPA2, from mouse cells. The cDNA has a 3978-nucleotide open reading frame encoding a polypeptide of 1136 amino acids with a calculated molecular mass of 128 kDa. A sequence alignment of mouse RPA2 with the corresponding gene from Drosophila melanogaster and yeast reveals a much lower sequence similarity of this subunit of RNA polymerase I (Pol I) compared to the second largest subunit of other eukaryotic RNA polymerases. Four Pol I-specific regions, termed I alpha-I delta, are conserved in the N-terminal part of RPA2. The structural features of the different domains as well as the homology to essential functional domains found in other RNA polymerases are discussed.

    PMID: 8921381 [PubMed - indexed for MEDLINE]

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