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Hoffmann, R. A wiki for the life sciences where authorship matters. Nature Genetics (2008)

RPC19, the gene for a subunit common to yeast RNA polymerases A (I) and C (III).

Yeast RNA polymerases A (I) and C (III) share a subunit called AC19. The gene encoding AC19 has been isolated from yeast genomic DNA using oligonucleotide probes deduced from peptide sequences of the isolated subunit. This gene (RPC19) contains an intron-free open reading frame of 143 amino acid residues. RPC19 is a single copy gene that maps on chromosome II and is essential for cell viability. The amino acid sequence contains a sequence motif common to the Escherichia coli RNA polymerase alpha subunit, the Saccharomyces cerevisiae AC40 and B44.5 subunits, the human hRPB33 product, and the CnjC conjugation-specific gene product of Tetrahymena. The 5'-upstream region contains a sequence element, the PAC box, that has been conserved in at least 10 genes encoding subunits of RNA polymerases A and C.[1]


  1. RPC19, the gene for a subunit common to yeast RNA polymerases A (I) and C (III). Dequard-Chablat, M., Riva, M., Carles, C., Sentenac, A. J. Biol. Chem. (1991) [Pubmed]
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