Abstract
Abelson murine leukemia virus (A-MuLV)-transformed cells, simian virus 40 (SV40)-transformed cells, and chemically transformed cells all have increased levels of a 50,000-molecular-weight host cell protein. The protein was detected with sera raised to the A-MuLV-transformed and chemically transformed cells and was tightly bound to T-antigen in extracts of SV40-transformed cells. Partial protease digests showed that the proteins from all three sources were indistinguishable. The three proteins were phosphorylated in cells, and the linkage of phosphate to the A-MuLV-associated P50 was to a serine residue. By immunofluorescence methods, P50-related protein was found on the surface of both normal lymphoid cells and A-MuLV-transformed lymphoid cells, but cell fractionation showed that the majority of P50 was free in the cytoplasm of the transformed cells. Immunofluorescence also showed that P50 was found in granules in the cytoplasm of both untransformed and SV40-transformed fibroblasts. Other cells gave indistinct patterns. Cocapping experiments showed that the A-MuLV-specified P120 protein is weakly associated with the surface P50-related protein of lymphoid cells, but no association of P120 and P50 could be demonstrated by immunoprecipitation methods. Although a monoclonal antiserum to P50 was used in many of these studies, the identity of the bulk P50 protein with the molecules that are reactive at the cell surface requires further study.
Full text
PDF










Images in this article
Selected References
These references are in PubMed. This may not be the complete list of references from this article.
- Aaronson S. A., Todaro G. J. Basis for the acquisition of malignant potential by mouse cells cultivated in vitro. Science. 1968 Nov 29;162(3857):1024–1026. doi: 10.1126/science.162.3857.1024. [DOI] [PubMed] [Google Scholar]
- Ambros V., Baltimore D. Protein is linked to the 5' end of poliovirus RNA by a phosphodiester linkage to tyrosine. J Biol Chem. 1978 Aug 10;253(15):5263–5266. [PubMed] [Google Scholar]
- Carroll R. B., Muello K., Melero J. A. Coordinate expression of the 48K host nuclear phosphoprotein and SV40 T ag upon primary infection of mouse cells. Virology. 1980 Apr 30;102(2):447–452. doi: 10.1016/0042-6822(80)90112-9. [DOI] [PubMed] [Google Scholar]
- Cleveland D. W., Fischer S. G., Kirschner M. W., Laemmli U. K. Peptide mapping by limited proteolysis in sodium dodecyl sulfate and analysis by gel electrophoresis. J Biol Chem. 1977 Feb 10;252(3):1102–1106. [PubMed] [Google Scholar]
- DeLeo A. B., Jay G., Appella E., Dubois G. C., Law L. W., Old L. J. Detection of a transformation-related antigen in chemically induced sarcomas and other transformed cells of the mouse. Proc Natl Acad Sci U S A. 1979 May;76(5):2420–2424. doi: 10.1073/pnas.76.5.2420. [DOI] [PMC free article] [PubMed] [Google Scholar]
- DeLeo A. B., Shiku H., Takahashi T., John M., Old L. J. Cell surface antigens of chemically induced sarcomas of the mouse. I. Murine leukemia virus-related antigens and alloantigens on cultured fibroblasts and sarcoma cells: description of a unique antigen on BALB/c Meth A sarcoma. J Exp Med. 1977 Sep 1;146(3):720–734. doi: 10.1084/jem.146.3.720. [DOI] [PMC free article] [PubMed] [Google Scholar]
- Gluzman Y., Sambrook J. F., Frisque R. J. Expression of early genes of origin-defective mutants of simian virus 40. Proc Natl Acad Sci U S A. 1980 Jul;77(7):3898–3902. doi: 10.1073/pnas.77.7.3898. [DOI] [PMC free article] [PubMed] [Google Scholar]
- Gurney E. G., Harrison R. O., Fenno J. Monoclonal antibodies against simian virus 40 T antigens: evidence for distinct sublcasses of large T antigen and for similarities among nonviral T antigens. J Virol. 1980 Jun;34(3):752–763. doi: 10.1128/jvi.34.3.752-763.1980. [DOI] [PMC free article] [PubMed] [Google Scholar]
- Hay A. J. Studies on the formation of the influenza virus envelope. Virology. 1974 Aug;60(2):398–418. doi: 10.1016/0042-6822(74)90335-3. [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]
- Jay G., DeLeo A. B., Appella E., Dubois G. C., Law L. W., Khoury G., Old L. J. A common transformation-related protein in murine sarcomas and leukemias. Cold Spring Harb Symp Quant Biol. 1980;44(Pt 1):659–664. doi: 10.1101/sqb.1980.044.01.069. [DOI] [PubMed] [Google Scholar]
- Kessler S. W. Rapid isolation of antigens from cells with a staphylococcal protein A-antibody adsorbent: parameters of the interaction of antibody-antigen complexes with protein A. J Immunol. 1975 Dec;115(6):1617–1624. [PubMed] [Google Scholar]
- Kress M., May E., Cassingena R., May P. Simian virus 40-transformed cells express new species of proteins precipitable by anti-simian virus 40 tumor serum. J Virol. 1979 Aug;31(2):472–483. doi: 10.1128/jvi.31.2.472-483.1979. [DOI] [PMC free article] [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]
- Lane D. P., Crawford L. V. T antigen is bound to a host protein in SV40-transformed cells. Nature. 1979 Mar 15;278(5701):261–263. doi: 10.1038/278261a0. [DOI] [PubMed] [Google Scholar]
- Linzer D. I., Levine A. J. Characterization of a 54K dalton cellular SV40 tumor antigen present in SV40-transformed cells and uninfected embryonal carcinoma cells. Cell. 1979 May;17(1):43–52. doi: 10.1016/0092-8674(79)90293-9. [DOI] [PubMed] [Google Scholar]
- Luka J., Jörnvall H., Klein G. Purification and biochemical characterization of the Epstein-Barr virus-determined nuclear antigen and an associated protein with a 53,000-dalton subunit. J Virol. 1980 Sep;35(3):592–602. doi: 10.1128/jvi.35.3.592-602.1980. [DOI] [PMC free article] [PubMed] [Google Scholar]
- McCormick F., Harlow E. Association of a murine 53,000-dalton phosphoprotein with simian virus 40 large-T antigen in transformed cells. J Virol. 1980 Apr;34(1):213–224. doi: 10.1128/jvi.34.1.213-224.1980. [DOI] [PMC free article] [PubMed] [Google Scholar]
- Melero J. A., Tur S., Carroll R. B. Host nuclear proteins expressed in simian virus 40-transformed and -infected cells. Proc Natl Acad Sci U S A. 1980 Jan;77(1):97–101. doi: 10.1073/pnas.77.1.97. [DOI] [PMC free article] [PubMed] [Google Scholar]
- Paige C. J., Kincade P. W., Ralph P. Murine B cell leukemia line with inducible surface immunoglobulin expression. J Immunol. 1978 Aug;121(2):641–647. [PubMed] [Google Scholar]
- Raff M. C., Feldmann M., De Petris S. Monospecificity of bone marrow-derived lymphocytes. J Exp Med. 1973 Apr 1;137(4):1024–1030. doi: 10.1084/jem.137.4.1024. [DOI] [PMC free article] [PubMed] [Google Scholar]
- Rothberg P. G., Harris T. J., Nomoto A., Wimmer E. O4-(5'-uridylyl)tyrosine is the bond between the genome-linked protein and the RNA of poliovirus. Proc Natl Acad Sci U S A. 1978 Oct;75(10):4868–4872. doi: 10.1073/pnas.75.10.4868. [DOI] [PMC free article] [PubMed] [Google Scholar]
- Rotter V., Witte O. N., Coffman R., Baltimore D. Abelson murine leukemia virus-induced tumors elicit antibodies against a host cell protein, P50. J Virol. 1980 Nov;36(2):547–555. doi: 10.1128/jvi.36.2.547-555.1980. [DOI] [PMC free article] [PubMed] [Google Scholar]
- Scher C. D., Siegler R. Direct transformation of 3T3 cells by Abelson murine leukaemia virus. Nature. 1975 Feb 27;253(5494):729–731. doi: 10.1038/253729a0. [DOI] [PubMed] [Google Scholar]
- Simmons D. T., Martin M. A., Mora P. T., Chang C. Relationship among Tau antigens isolated from various lines of simian virus 40-transformed cells. J Virol. 1980 Jun;34(3):650–657. doi: 10.1128/jvi.34.3.650-657.1980. [DOI] [PMC free article] [PubMed] [Google Scholar]
- Smith A. E., Smith R., Paucha E. Characterization of different tumor antigens present in cells transformed by simian virus 40. Cell. 1979 Oct;18(2):335–346. doi: 10.1016/0092-8674(79)90053-9. [DOI] [PubMed] [Google Scholar]
- Witte O. N., Baltimore D. Relationship of retrovirus polyprotein cleavages to virion maturation studied with temperature-sensitive murine leukemia virus mutants. J Virol. 1978 Jun;26(3):750–761. doi: 10.1128/jvi.26.3.750-761.1978. [DOI] [PMC free article] [PubMed] [Google Scholar]
- Witte O. N., Dasgupta A., Baltimore D. Abelson murine leukaemia virus protein is phosphorylated in vitro to form phosphotyrosine. Nature. 1980 Feb 28;283(5750):826–831. doi: 10.1038/283826a0. [DOI] [PubMed] [Google Scholar]
- Witte O. N., Rosenberg N., Baltimore D. Preparation of syngeneic tumor regressor serum reactive with the unique determinants of the Abelson murine leukemia virus-encoded P120 protein at the cell surface. J Virol. 1979 Sep;31(3):776–784. doi: 10.1128/jvi.31.3.776-784.1979. [DOI] [PMC free article] [PubMed] [Google Scholar]
- Witte O. N., Rosenberg N., Paskind M., Shields A., Baltimore D. Identification of an Abelson murine leukemia virus-encoded protein present in transformed fibroblast and lymphoid cells. Proc Natl Acad Sci U S A. 1978 May;75(5):2488–2492. doi: 10.1073/pnas.75.5.2488. [DOI] [PMC free article] [PubMed] [Google Scholar]