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Analysis of the gene encoding the largest subunit of RNA polymerase II in Drosophila

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Summary

We have characterized RpII215, the gene encoding the largest subunit of RNA polymerase II in Drosophila melanogaster. DNA sequencing and nuclease S1 analyses provided the primary structure of this gene, its 7 kb RNA and 215 kDa protein products. The amino-terminal 80% of the subunit harbors regions with strong homology to the β′ subunit of Escherichia coli RNA polymerase and to the largest subunits of other eukaryotic RNA polymerases. The carboxyl-terminal 20% of the subunit is composed of multiple repeats of a seven amino acid consensus sequence, Tyr-Ser-Pro-Thr-Ser-Pro-Ser. The homology domains, as well as the unique carboxyl-terminal structure, are considered in the light of current knowledge of RNA polymerase II and the properties of its largest subunit. Additionally, germline transformation demonstrated that a 9.4 kb genomic DNA segment containing the α-amanitinresistant allele, RpII215 C4, includes all sequences required to produce amanitin-resistant transformants.

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Author notes

  1. R. S. Jokerst

    Present address: Monsanto, 700 Chesterfield Village Parkway, 63198, Chesterfield, MO, USA

Authors and Affiliations

  1. Biochemistry Department, Duke University Medical Center, 27710, Durham, NC, USA

    R. S. Jokerst, J. R. Weeks, W. A. Zehring & A. L. Greenleaf

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  1. R. S. Jokerst
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  2. J. R. Weeks
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  3. W. A. Zehring
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  4. A. L. Greenleaf
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Communicated by B.H. Judd

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Jokerst, R.S., Weeks, J.R., Zehring, W.A. et al. Analysis of the gene encoding the largest subunit of RNA polymerase II in Drosophila . Mol Gen Genet 215, 266–275 (1989). https://doi.org/10.1007/BF00339727

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