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The p21 ras C-terminus is required for transformation and membrane association

Nature volume 310, pages 583–586 (1984)Cite this article

Abstract

The Harvey murine sarcoma virus (Ha-MuSV) transforming gene, v-rasH, encodes a 21,000 molecular weight protein (p21) that is closely related to the p21 proteins encoded by the cellular transforming genes of the ras gene family1–8. The primary translation product (prop21), which is found in the cytosol, undergoes post-translational modification9 and the mature protein subsequently becomes associated with the inner surface of the plasma membrane and binds lipid tightly10,11. The p21 proteins have the capacity to bind guanine nucleotides non-covalently in vitro3,12. To assess the biological relevance of these biochemical features of the protein, we have now studied a series of deletion mutants located at or near the C-terminus of the viral p21 protein. Our tissue culture studies indicate that amino acids located at or near the C-terminus are required for cellular transformation, membrane association and lipid binding.

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Author notes

  1. Berthe M. Willumsen

    Present address: Microbiology Institute, University of Copenhagen, Øster Farimagsgade 2A, DK 1353, Copenhagen K, Denmark

Authors and Affiliations

  1. The Fibiger Institute, DK 2100, Copenhagen, 0, Denmark

    Annette Christensen

  2. Laboratory of Cellular Oncology, National Cancer Institute, Building 37, Room 1B-26, Bethesda, Maryland, 20205, USA

    Nancy L. Hubbert, Alex G. Papageorge & Douglas R. Lowy

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  1. Berthe M. Willumsen
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  2. Annette Christensen
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  4. Alex G. Papageorge
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  5. Douglas R. Lowy
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Willumsen, B., Christensen, A., Hubbert, N. et al. The p21 ras C-terminus is required for transformation and membrane association. Nature 310, 583–586 (1984). https://doi.org/10.1038/310583a0

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