Production of monoclonal antibodies specific to the carboxyl terminal region of the 85 kDa subunit of phosphatidylinositol 3-kinase: use of the antibodies in recognition of mutant p85.

Abstract excerpt

We have established two hybridomas producing mAb to the carboxyl terminal region of phosphatidylinositol-3 kinase 85 kDa subunit type alpha (p85 alpha). Analysis using deletion mutants of p85 revealed that epitopes for the two mAb were located on the border of the src homology 2 (SH2) sequence located at the carboxyl end of p85. They immunoprecipitated free p85 efficiently, but reactivity to p85 bound to p110 was...

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