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. 1986 Jun;83(11):3629–3633. doi: 10.1073/pnas.83.11.3629

Expression of the v-mos gene alters a Mr 55,000 protein during acute infection by Moloney murine sarcoma virus.

B Singh, J T Sparrow, A M Hedge, R B Arlinghaus
PMCID: PMC323576  PMID: 3012522

Abstract

Infection of the rat myoblast cell line, L6E9, with Moloney murine sarcoma virus (Mo-MuSV) clone 124, altered a cellular protein of Mr 55,000 (P55) within 2 days of infection. The alteration of P55 was observed as a reduction in its steady-state level in cell extracts. The reduction of P55 correlated with the appearance of p37mos in infected cells. Except for P55 and one other protein, no change was detected in the total protein pattern of infected cells compared to uninfected cells, as judged by either immunoblots of one-dimensional NaDodSO4 gels or direct two-dimensional gel analysis. P55 levels were unchanged when L6E9 cells were infected with Moloney murine leukemia virus or several different transforming retroviruses. To determine the specificity of this v-mos-induced effect on P55, L6E9 cells were acutely infected with a temperature-sensitive variant (ts110) of Mo-MuSV. When these cells were shifted from 39 degrees C to 33 degrees C, which activates the gag-mos gene product, the P55 level dropped by greater than 50% within 2-3 hr. Conversely, with a shift in temperature from 33 degrees C to 39 degrees C, the cells' P55 level returned to normal within 5 hr, starting at 30 min after shift. These results clearly show that v-mos expression in acutely infected L6E9 cells alters the cellular protein, P55.

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Selected References

These references are in PubMed. This may not be the complete list of references from this article.

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