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Isolation and genetic mapping of four microsatellite repeats from chromosome 3p21 using 40 CEPH pedigrees
1Department of Genetics, Trinity College, University of Dublin, Ireland.
Abstract:
We have isolated and characterized the microsatellite markers D3S1447, D3S1448, D3S1449, and D3S1450, with PIC values of 0.771, 0.644, 0.633, and 0.552, respectively, from a hamster/human chromosome 3 library. By typing 40 CEPH pedigrees with each of these novel markers, we have sublocalized each microsatellite to 3p21 and with multipoint analyses have shown that the likelihood of the order centromere-D3S13-24.24 cM-D3S1450-9.41 cM-D3S1447-7.05 cM-D3F15S2-3 cM-[D3S1448-2.2 cM-D3S1449]-6.13 cM-D3S1100- telomere significantly exceeds any other order (8.0 x 10(3):1). These finely mapped markers will be extremely useful in aiding in the physical characterization of 3p21, which has been implicated in a range of tumor tissues.