Refined chromosome assignment of human novel H-RalGDS gene on chromosome 9q34. 1 by using radiation hybrid Genebridge 4 panel
2000
Objective Refined chromosome assignment of a novel Ras related H RalGDS gene (the human homology of rat RalGDS, Ral guanine nucleotide dissociation stimulator recently cloned and characterized by our laboratory) by using human/rodent radiation somatic cell hybrid panel GB4.Methods According to the sequence of the 3′ untranslated region of H RalGDS cDNA, forward and reverse primers were designed and used to amplify the human/rodent somatic radiation hybrid Genebridge 4 panel. The PCR result of each cell line of the panel was scored in a certain way and put into the related internet site of WI/MIT Radiation Hybrid Mapper for RH mapping and comprehensive analysis. Results The H RalGDS gene was successfully localized to the framework of chromosome 9. After referring to literature and further integrated mapping analysis of the physical, genetic linkage and cytological mappings, the gene was assigned precisely between the markers SURF5 and RPL7A which had already been assigned to human chromosome 9q34.1 .Conclusion The localization of H RalGDS not only contributed much to the construction of refined gene map and cytogenetic map within the region of chromosome 9q34, but also made clear that RH mapping of human novel genes is a simple, convenient and reliable method which can provide even more genetic infomation of genes within chromsomal regions.
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