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Hoffmann, R. A wiki for the life sciences where authorship matters. Nature Genetics (2008)
 
 
 
 
 

Anti-pp60src antibodies are substrates for EGF-stimulated protein kinase.

Epidermal growth factor (EGF) stimulates phosphorylation of its own receptor at a tyrosine residue. Similarly, the viral gene product pp60src, which is responsible for cellular transformation by avian sarcoma virus (ASV), phosphorylates itself and immunoglobulin directed against pp60src at tyrosine residues. This unusual site of phosphorylation catalysed by two membrane-associated protein kinases involved in growth control prompted us to study the immunological relatedness of the EGF-stimulated protein kinase and the pp60src. Using anti-pp60src antisera, we attempted to immunoprecipitate the EGF-stimulated protein kinase solubilized from plasma membranes. We report here that neither the EGF- stimulated kinase nor the EGF receptor were immunoprecipitable by anti-pp60src sera. However, anti-pp60src IgG served as a specific substrate for the EGF-stimulated kinase, suggesting a close similarity between the EGF-stimulated kinase and pp60src.[1]

References

  1. Anti-pp60src antibodies are substrates for EGF-stimulated protein kinase. Kudlow, J.E., Buss, J.E., Gill, G.N. Nature (1981) [Pubmed]
 
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