Tyrosine 706 and 807 phosphorylation site mutants in the murine colony-stimulating factor-1 receptor are unaffected in their ability to bind or phosphorylate phosphatidylinositol-3 kinase but show differential defects in their ability to induce early response gene transcription.

Abstract excerpt

The receptor for colony-stimulating factor-1 (CSF-1) is a receptor protein-tyrosine kinase. To study the possible function of CSF-1 receptor autophosphorylation, two autophosphorylation sites, Tyr-706, located in the kinase insert, and Tyr-807, a residue conserved in all protein-tyrosine kinases, were changed independently to either phenylalanine or glycine. Wild-type and mutant receptors were stably expressed in...

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