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Science 31 January 1992: Vol. 255. no. 5044, pp. 603 - 606 DOI: 10.1126/science.1736363
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Articles
Science, Vol 255, Issue 5044, 603-606
Copyright © 1992 by American Association for the Advancement of Science
The Son of sevenless gene product: a putative activator of Ras
L Bonfini,
CA Karlovich,
C Dasgupta,
and
U Banerjee
Department of Biology, University of California, Los Angeles 90024.
The Son of sevenless (Sos) gene functions in signaling pathways initiated by the sevenless and epidermal growth factor receptor tyrosine kinases. The Sos gene has now been isolated and sequenced. Its product is a 1595-amino acid protein similar to the CDC25 protein in Saccharomyces cerevisiae, a guanine nucleotide exchange factor that activates Ras. These results imply a role for the ras pathway in Drosophila neuronal development.
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