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Rat sarcoma virus: further analysis of individual viral isolates and the gene product.

ABSTRACT

Rasheed rat sarcoma virus, derived by in vitro cocultivation of two rat cell lines (Rasheed et al., Proc. Natl. Acad. Sci. U.S.A. 75:2972-2976, 1978), has been reported to code for a protein of 29,000 Mr, immunologically related to the 21,000 Mr src gene product of Harvey and Kirsten sarcoma viruses. Rat sarcoma virus p29 was thought to contain at least part of a rat type C virus structural protein, since antiserum prepared against whole rat virus was able to immunoprecipitate rat sarcoma virus p29 but not Harvey or Kirsten sarcoma virus p21 (Young et al., Proc. Natl. Acad. Sci. U.S.A. 76:3523-3527, 1979). We now report that antiserum directed against rat type C virus p15, but not viral p12, p10, or p27, immunoprecipitated rat sarcoma virus p29. The p15 antiserum was also able to immunoprecipitate both denatured p29 and a peptide derived by V-8 protease cleavage of p29, indicating that this antiserum contains antibodies directed against primary amino acid determinants. Finally, five separate isolates of rat sarcoma virus were found to code for p29, which indicates that a highly specific site of recombination is involved in the generation of sarcoma viruses in rat cells.

This article has been cited by other articles:

• Lee, S.-Y., Howard, T. M., Rasheed, S. (1998). Genetic Analysis of the Rat Leukemia Virus: Influence of Viral Sequences in Transduction of the c-ras Proto-Oncogene and Expression of Its Transforming Activity. J. Virol. 72: 9906-9917 [Abstract] [Full Text]  
• Rasheed, S, Norman, G., Heidecker, G (1983). Nucleotide sequence of the Rasheed rat sarcoma virus oncogene: new mutations. Science 221: 155-157 [Abstract]