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  • Title: [Three regions of Rpb10 mini-subunit of nuclear RNA polymerases are strictly conserved in all eukaryotes].
    Author: Shpakovskiĭ GV, Lebedenko EN.
    Journal: Bioorg Khim; 1996 Dec; 22(12):938-40. PubMed ID: 9054344.
    Abstract:
    The rpb10+ cDNA from the fission yeast Schizosaccharomyces pombe was cloned using two independent approaches (PCR and genetic suppression). The cloned cDNA encoded the Rpb10 subunit common for all three RNA polymerases. Comparison of the deduced amino acid sequence of the Sz. pombe Rbp10 subunit (71 amino acid residues) with those of the homologous subunits of RNA polymerases I, II, and III from Saccharomyces cerevisiae and Home sapiens revealed that heptapeptides RCFT/SCGK (residues 6-12), RYCCRRM (residues 43-49), and HVDLIEK (residues 53-59) were evolutionarily the most conserved structural motifs of these subunits. It is shown that the Rbp10 subunit from Sz. pombe can substitute its homolog (ABC10 beta) in the baker's yeast S. cerevisiae.
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