Abstract
We have examined the phosphorylation state of five proteins known to become phosphorylated on tyrosine during transformation by Rous sarcoma virus by using cells infected with a panel of partially transforming mutant viruses. Situations of viral mutant and growth temperature were found in which phosphorylation of some proteins occurred more extensively than that of others, indicating that mutations in the src gene had affected the specificity of pp60src for some of its substrates as well as affecting the activity of the enzyme. To obtain insight into the biological functions of these phosphorylations, comparisons were made between the degree of phosphorylation of these proteins and the expression of various indicators of the transformed phenotype. The data suggest that phosphorylation of proteins l, p, and q (Mr of 46,000, 39,000 and 28,000, respectively) is not sufficient to induce changes in adhesiveness, hexose transport or morphology. The phosphorylation of protein p or l or total phosphotyrosine content correlated well with the production of plasminogen activator, and the phosphorylation of proteins l and q correlated well with increased hexose transport. However, even when good correlations were observed, significant exceptions were sometimes noted. It thus remains possible that some phosphorylations on tyrosine observed in Rous sarcoma virus-transformed cells are not causally related to the expression of the measured parameters of transformation.
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Selected References
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- Anderson D. D., Beckmann R. P., Harms E. H., Nakamura K., Weber M. J. Biological properties of "partial" transformation mutants of Rous sarcoma virus and characterization of their pp60src kinase. J Virol. 1981 Jan;37(1):445–458. doi: 10.1128/jvi.37.1.445-458.1981. [DOI] [PMC free article] [PubMed] [Google Scholar]
- Becker D., Kurth R., Critchley D., Friis R., Bauer H. Distinguishable transformation-defective phenotypes among temperature-sensitive mutants of Rous sarcoma virus. J Virol. 1977 Mar;21(3):1042–1055. doi: 10.1128/jvi.21.3.1042-1055.1977. [DOI] [PMC free article] [PubMed] [Google Scholar]
- Beemon K., Ryden T., McNelly E. A. Transformation by avian sarcoma viruses leads to phosphorylation of multiple cellular proteins on tyrosine residues. J Virol. 1982 May;42(2):742–747. doi: 10.1128/jvi.42.2.742-747.1982. [DOI] [PMC free article] [PubMed] [Google Scholar]
- Brugge J. S., Erikson R. L. Identification of a transformation-specific antigen induced by an avian sarcoma virus. Nature. 1977 Sep 22;269(5626):346–348. doi: 10.1038/269346a0. [DOI] [PubMed] [Google Scholar]
- Bryant D., Parsons J. T. Site-directed mutagenesis of the src gene of Rous sarcoma virus: construction and characterization of a deletion mutant temperature sensitive for transformation. J Virol. 1982 Nov;44(2):683–691. doi: 10.1128/jvi.44.2.683-691.1982. [DOI] [PMC free article] [PubMed] [Google Scholar]
- Calothy G., Pessac B. Growth stimulation of chicl embryo neuroretinal cells infected with Rous sarcoma virus: relationship to viral replication and morphological transformation. Virology. 1976 May;71(1):336–345. doi: 10.1016/0042-6822(76)90117-3. [DOI] [PubMed] [Google Scholar]
- Cheng Y. S., Chen L. B. Detection of phosphotyrosine-containing 34,000-dalton protein in the framework of cells transformed with Rous sarcoma virus. Proc Natl Acad Sci U S A. 1981 Apr;78(4):2388–2392. doi: 10.1073/pnas.78.4.2388. [DOI] [PMC free article] [PubMed] [Google Scholar]
- Collett M. S., Erikson R. L. Protein kinase activity associated with the avian sarcoma virus src gene product. Proc Natl Acad Sci U S A. 1978 Apr;75(4):2021–2024. doi: 10.1073/pnas.75.4.2021. [DOI] [PMC free article] [PubMed] [Google Scholar]
- Collett M. S., Purchio A. F., Erikson R. L. Avian sarcoma virus-transforming protein, pp60src shows protein kinase activity specific for tyrosine. Nature. 1980 May 15;285(5761):167–169. doi: 10.1038/285167a0. [DOI] [PubMed] [Google Scholar]
- Cooper J. A., Bowen-Pope D. F., Raines E., Ross R., Hunter T. Similar effects of platelet-derived growth factor and epidermal growth factor on the phosphorylation of tyrosine in cellular proteins. Cell. 1982 Nov;31(1):263–273. doi: 10.1016/0092-8674(82)90426-3. [DOI] [PubMed] [Google Scholar]
- Cooper J. A., Hunter T. Changes in protein phosphorylation in Rous sarcoma virus-transformed chicken embryo cells. Mol Cell Biol. 1981 Feb;1(2):165–178. doi: 10.1128/mcb.1.2.165. [DOI] [PMC free article] [PubMed] [Google Scholar]
- Cooper J. A., Hunter T. Discrete primary locations of a tyrosine-protein kinase and of three proteins that contain phosphotyrosine in virally transformed chick fibroblasts. J Cell Biol. 1982 Aug;94(2):287–296. doi: 10.1083/jcb.94.2.287. [DOI] [PMC free article] [PubMed] [Google Scholar]
- Cooper J. A., Hunter T. Four different classes of retroviruses induce phosphorylation of tyrosines present in similar cellular proteins. Mol Cell Biol. 1981 May;1(5):394–407. doi: 10.1128/mcb.1.5.394. [DOI] [PMC free article] [PubMed] [Google Scholar]
- Cooper J. A., Hunter T. Similarities and differences between the effects of epidermal growth factor and Rous sarcoma virus. J Cell Biol. 1981 Dec;91(3 Pt 1):878–883. doi: 10.1083/jcb.91.3.878. [DOI] [PMC free article] [PubMed] [Google Scholar]
- Erikson E., Erikson R. L. Identification of a cellular protein substrate phosphorylated by the avian sarcoma virus-transforming gene product. Cell. 1980 Oct;21(3):829–836. doi: 10.1016/0092-8674(80)90446-8. [DOI] [PubMed] [Google Scholar]
- Fujita D. J., Boschek C. B., Ziemiecki A., Friis R. R. An avian sarcoma virus mutant which produces an aberrant transformation affecting cell morphology. Virology. 1981 May;111(1):223–238. doi: 10.1016/0042-6822(81)90667-x. [DOI] [PubMed] [Google Scholar]
- Hunter T., Sefton B. M. Transforming gene product of Rous sarcoma virus phosphorylates tyrosine. Proc Natl Acad Sci U S A. 1980 Mar;77(3):1311–1315. doi: 10.1073/pnas.77.3.1311. [DOI] [PMC free article] [PubMed] [Google Scholar]
- Kahn P., Nakamura K., Shin S., Smith R. E., Weber M. J. Tumorigenicity of partial transformation mutants of Rous sarcoma virus. J Virol. 1982 May;42(2):602–611. doi: 10.1128/jvi.42.2.602-611.1982. [DOI] [PMC free article] [PubMed] [Google Scholar]
- Krueger J. G., Garber E. A., Goldberg A. R., Hanafusa H. Changes in amino-terminal sequences of pp60src lead to decreased membrane association and decreased in vivo tumorigenicity. Cell. 1982 Apr;28(4):889–896. doi: 10.1016/0092-8674(82)90068-x. [DOI] [PubMed] [Google Scholar]
- Laemmli U. K. Cleavage of structural proteins during the assembly of the head of bacteriophage T4. Nature. 1970 Aug 15;227(5259):680–685. doi: 10.1038/227680a0. [DOI] [PubMed] [Google Scholar]
- Levinson A. D., Oppermann H., Levintow L., Varmus H. E., Bishop J. M. Evidence that the transforming gene of avian sarcoma virus encodes a protein kinase associated with a phosphoprotein. Cell. 1978 Oct;15(2):561–572. doi: 10.1016/0092-8674(78)90024-7. [DOI] [PubMed] [Google Scholar]
- Levinson A. D., Oppermann H., Varmus H. E., Bishop J. M. The purified product of the transforming gene of avian sarcoma virus phosphorylates tyrosine. J Biol Chem. 1980 Dec 25;255(24):11973–11980. [PubMed] [Google Scholar]
- Martinez R., Nakamura K. D., Weber M. J. Identification of phosphotyrosine-containing proteins in untransformed and Rous sarcoma virus-transformed chicken embryo fibroblasts. Mol Cell Biol. 1982 Jun;2(6):653–665. doi: 10.1128/mcb.2.6.653. [DOI] [PMC free article] [PubMed] [Google Scholar]
- Nakamura K. D., Martinez R., Weber M. J. Tyrosine phosphorylation of specific proteins after mitogen stimulation of chicken embryo fibroblasts. Mol Cell Biol. 1983 Mar;3(3):380–390. doi: 10.1128/mcb.3.3.380. [DOI] [PMC free article] [PubMed] [Google Scholar]
- Nakamura K. D., Weber M. J. Phosphorylation of a 36,000 Mr cellular protein in cells infected with partial transformation mutants of rous sarcoma virus. Mol Cell Biol. 1982 Feb;2(2):147–153. doi: 10.1128/mcb.2.2.147. [DOI] [PMC free article] [PubMed] [Google Scholar]
- Oppermann H., Levinson A. D., Levintow L., Varmus H. E., Bishop J. M., Kawai S. Two cellular proteins that immunoprecipitate with the transforming protein of Rous sarcoma virus. Virology. 1981 Sep;113(2):736–751. doi: 10.1016/0042-6822(81)90202-6. [DOI] [PubMed] [Google Scholar]
- Purchio A. F., Erikson E., Brugge J. S., Erikson R. L. Identification of a polypeptide encoded by the avian sarcoma virus src gene. Proc Natl Acad Sci U S A. 1978 Mar;75(3):1567–1571. doi: 10.1073/pnas.75.3.1567. [DOI] [PMC free article] [PubMed] [Google Scholar]
- Radke K., Gilmore T., Martin G. S. Transformation by Rous sarcoma virus: a cellular substrate for transformation-specific protein phosphorylation contains phosphotyrosine. Cell. 1980 Oct;21(3):821–828. doi: 10.1016/0092-8674(80)90445-6. [DOI] [PubMed] [Google Scholar]
- Radke K., Martin G. S. Transformation by Rous sarcoma virus: effects of src gene expression on the synthesis and phosphorylation of cellular polypeptides. Proc Natl Acad Sci U S A. 1979 Oct;76(10):5212–5216. doi: 10.1073/pnas.76.10.5212. [DOI] [PMC free article] [PubMed] [Google Scholar]
- Sefton B. M., Hunter T., Ball E. H., Singer S. J. Vinculin: a cytoskeletal target of the transforming protein of Rous sarcoma virus. Cell. 1981 Apr;24(1):165–174. doi: 10.1016/0092-8674(81)90512-2. [DOI] [PubMed] [Google Scholar]
- Sefton B. M., Hunter T., Beemon K., Eckhart W. Evidence that the phosphorylation of tyrosine is essential for cellular transformation by Rous sarcoma virus. Cell. 1980 Jul;20(3):807–816. doi: 10.1016/0092-8674(80)90327-x. [DOI] [PubMed] [Google Scholar]
- Sefton B. M., Hunter T., Beemon K. Temperature-sensitive transformation by Rous sarcoma virus and temperature-sensitive protein kinase activity. J Virol. 1980 Jan;33(1):220–229. doi: 10.1128/jvi.33.1.220-229.1980. [DOI] [PMC free article] [PubMed] [Google Scholar]
- Sefton B. M., Patschinsky T., Berdot C., Hunter T., Elliott T. Phosphorylation and metabolism of the transforming protein of Rous sarcoma virus. J Virol. 1982 Mar;41(3):813–820. doi: 10.1128/jvi.41.3.813-820.1982. [DOI] [PMC free article] [PubMed] [Google Scholar]
- Wang J. Y., Queen C., Baltimore D. Expression of an Abelson murine leukemia virus-encoded protein in Escherichia coli causes extensive phosphorylation of tyrosine residues. J Biol Chem. 1982 Nov 25;257(22):13181–13184. [PubMed] [Google Scholar]
- Weber M. J., Friis R. R. Dissociation of transformation parameters using temperature-conditional mutants of Rous sarcoma virus. Cell. 1979 Jan;16(1):25–32. doi: 10.1016/0092-8674(79)90184-3. [DOI] [PubMed] [Google Scholar]
- Weber M. J. Hexose transport in normal and in Rous sarcoma virus-transformed cells. J Biol Chem. 1973 May 10;248(9):2978–2983. [PubMed] [Google Scholar]
- Ziemiecki A., Friis R. R., Bauer H. Half-life of the Rous sarcoma virus transforming protein pp60src and its associated kinase activity. Mol Cell Biol. 1982 Apr;2(4):355–360. doi: 10.1128/mcb.2.4.355. [DOI] [PMC free article] [PubMed] [Google Scholar]