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Chromosomal mapping of murine c-fes and c-src genes
Abstract:
The murine homologs of two viral oncogenes associated with tyrosine-specific kinase activity have been assigned to different loci in the mouse genome. The segregation of restriction site polymorphisms, as detected by probes that are specific for endogenous c-fes and c-src sequences, was followed in the DNA of recombinant inbred strains. The c-fes gene was mapped to the proximal portion of chromosome 7, very close to the Gpi-1 locus, whereas c-src was linked to the Psp locus on the distal half of chromosome 2.
Insights
Researchers mapped two mouse oncogenes, c-fes and c-src, to specific locations on mouse chromosomes. This genetic mapping provides insights into the organization of tyrosine kinase genes in the mouse genome.
Area of Science:
- Genetics
- Molecular Biology
- Oncology
Background:
- Viral oncogenes are crucial in cancer development.
- Tyrosine-specific kinases play a significant role in cellular signaling pathways.
- Understanding the genetic location of oncogenes is fundamental for cancer research.
Purpose of the Study:
- To determine the chromosomal locations of the murine homologs of two viral oncogenes.
- To map the endogenous c-fes and c-src gene sequences within the mouse genome.
- To investigate the genetic linkage of these oncogenes to known mouse genetic loci.
Main Methods:
- Utilized DNA from recombinant inbred mouse strains.
- Employed restriction site polymorphism analysis.
- Used specific DNA probes for endogenous c-fes and c-src sequences.
Main Results:
- The c-fes gene was localized to the proximal region of mouse chromosome 7.
- The c-src gene was mapped to the distal region of mouse chromosome 2.
- c-fes was found to be closely linked to the Gpi-1 locus.
- c-src showed linkage to the Psp locus.
Conclusions:
- The murine c-fes and c-src oncogenes reside on different chromosomes.
- This differential chromosomal assignment provides a basis for further genetic studies.
- The precise mapping aids in understanding the genomic organization of tyrosine kinase oncogenes.