title: Evidence for two distinct c-src loci on human chromosomes 1 and 20.
abstract: A number of proto-oncogenes have recently been localized to the chromosomal segments that are the breakpoints in the specific rearrangements noted in human malignant diseases. Moreover, rearranged forms of several proto-oncogenes have been identified in malignant cells; in several instances, the proto-oncogene has undergone an alteration as a result of a nonrandom chromosomal rearrangement. One proto-oncogene that has yet to be associated with human neoplastic disease is c-src, the cellular homologue of the transforming sequence of Rous sarcoma virus (RSV). By somatic cell hybridization, c-src has been mapped to chromosome 20, but its precise location was not determined. We have now mapped this gene by using in situ hybridization of the cloned human c-src probe to human mitotic chromosomes. We report here that the human genome contains two loci with strong homology to the coding regions of this oncogene, at 1p34-p36 and 20q12-q13. It is noteworthy that these chromosomal regions are frequently involved in the structural rearrangements observed in haematological malignant diseases.
mesh_terms: D001358:Avian Sarcoma Viruses / Q000235:genetics; D002471:Cell Transformation, Neoplastic; D002874:Chromosome Mapping; D002900:Chromosomes, Human, 1-3; D002903:Chromosomes, Human, 19-20; D003001:Cloning, Molecular; D006801:Humans; D008677:Metaphase; D009693:Nucleic Acid Hybridization; D009857:Oncogenes; D000090063:Proto-Oncogene Mas; D014178:Translocation, Genetic; D014316:Tritium
chemical_list: C000715470:MAS1 protein, human; D000090063:Proto-Oncogene Mas; D014316:Tritium