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. 1980 Aug;77(8):4993–4997. doi: 10.1073/pnas.77.8.4993

A transformation-defective mutant of Abelson murine leukemia virus lacks protein kinase activity.

O N Witte, S Goff, N Rosenberg, D Baltimore
PMCID: PMC349976  PMID: 6254050

Abstract

A transformation-defective mutant of Abelson murine leukemia virus (A-MuLV), called A-MuLV-P92td, has been isolated. The mutant encodes a serologically identifiable A-MuLV protein of molecular weight 92,000 (P92) but it lacks the ability to transform either fibroblasts or bone marrow lymphoid cells. In contrast to the protein made by transforming strains of A-MuLV, the protein made by A-MuLV-P92td does not becme phosphorylated during in vitro incubation with [gamma-32P]ATP. If the protein is mixed with proteins from cells transformed by a functional A-MuLV strain, phosphorylation of P92 occurs, showing that its ability to accept phosphate is not altered by the mutation. These parallel changes provide genetic evidence that the A-MuLV protein is a transforming protein and that its associated protein kinase activity (EC 2.7.1.37) is a crucial part of its transforming ability.

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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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