Confirmation and refinement of the localisation of the c-MEL locus on chromosome 19 by physical and genetic mapping |
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Authors: | E. Nimmo R. -A. Padua D. Hughes J. D. Brook R. Williamson K. J. Johnson |
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Affiliation: | (1) Department of Biochemistry and Molecular Genetics, St. Mary's Hospital Medical School, Paddington, W2 1PG London, UK;(2) LRF Preleukaemia Unit, Department of Haematology, University Hospital of Wales, Heath Park, CF4 4XN Cardiff, UK;(3) Institute of Medical Genetics, University of Wales College of Medicine, Heath Park, CF4 4XN Cardiff, UK |
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Abstract: | Summary The human gene locus c-MEL was identified following transfection of genomic DNA from the human melanoma cell line NK14; it has previously been assigned to chromosome 19 (p13.2–q13.2) by analysis of somatic cell hybrids. We have further refined the position of this gene to the proximal region of 19p (cen-p13.2), using cell hybrids containing only fragments of human chromosome 19. We have confirmed this physical localisation by linkage analysis with a recently described restriction fragment length polymorphism for the c-MEL gene, and mapped the locus within the region of the low density lipoprotein receptor gene (LDLR) (Lod 4.43, ) and the anonymous marker D19S11 (13.1.25) (Lod 9.33, ). This gene thus maps to a region of chromosome 19 involved in karyotypic abnormalities in a variety of malignancies including melanomas and leukaemias. |
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