The many faces of Src: multiple functions of a prototypical tyrosine kinase
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Updated: Oct 16, 2026

Identification of Kinase-substrate Pairs Using High Throughput Screening
Published on: August 29, 2015
1Laboratory of Genetic Disease Research, National Human Genome Research Institute, National Institutes of Health, Bethesda, Maryland 20892-4472, USA.
Abstract:
c-src was first isolated as the normal cellular homologue of v-src, the transforming gene of Rous Sarcoma virus (Stehelin et al., 1976). As the first proto-oncogene described and one of the first molecules demonstrated to have tyrosine kinase activity, Src has provided a prototype for understanding signal transduction involving tyrosine phosphorylation. Comparison between c-src and activated or transforming mutants of Src including v-src, combined with recent data on the structure of Src family kinases has provided new insight into their regulation. In this review, I will discuss the function of the various domains of Src in light of these mutational and structural studies.
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