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

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Mammalian homologues of the Drosophila Son of sevenless gene map to murine chromosomes 17 and 12 and to human chromosomes 2 and 14, respectively.

Activating mutations in the ras genes are commonly found in a wide range of human tumors. We recently cloned two mammalian genes, Son of sevenless 1 (mSos1) and Son of sevenless 2 (mSos2), whose protein products appear to be important positive regulators of ras proteins. Given the proposed role of Sos proteins in ras regulation, and the frequent occurrence of activated ras alleles in tumor cells, we were interested in determining whether the Sos genes may also be activated inappropriately by DNA rearrangement in tumor cells. To investigate this possibility, we have determined the chromosomal locations of both the mouse and the human Sos1 and Sos2 genes, using a combination of genetic linkage analysis and in situ hybridization to chromosomal spreads. We find that the murine Sos1 and Sos2 genes map to chromosomes 17E and 12C3.3-D and their human counterparts to chromosomes 2p21-2p2 and 14q21, respectively. Neither the human nor the mouse Sos loci map close to known mutations or to regions showing consistent karyotypic abnormalities in tumor cells.[1]

References

  1. Mammalian homologues of the Drosophila Son of sevenless gene map to murine chromosomes 17 and 12 and to human chromosomes 2 and 14, respectively. Webb, G.C., Jenkins, N.A., Largaespada, D.A., Copeland, N.G., Fernandez, C.S., Bowtell, D.D. Genomics (1993) [Pubmed]
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