title: Pulsed-field gel mapping studies in the vicinity of the fragile site at Xq27.3.
abstract: Physical mapping strategies are being employed for an analysis of the fragile X site region. Deletion breakpoints which may be close to the fragile site appear to be at a distance of at least several hundred kb from the nearest DNA probes. Further evidence is found for physical linkage between St14 (DXS52), DX13 (DXS15) and MN12 (DXS33). The data indicate differences in CG content and/or methylation levels between the distal and proximal sides of the fragile site.
authors.affiliation: Nuffield Department of Medicine, University of Oxford, John Radcliffe Hospital, UK.
authors.forename: M
authors.initials: M
authors.lastname: Patterson
authors.forename: M
authors.initials: M
authors.lastname: Bell
authors.forename: C
authors.initials: C
authors.lastname: Schwartz
authors.forename: K
authors.initials: K
authors.lastname: Davies
mesh_terms: D002872:Chromosome Deletion; D043283:Chromosome Fragile Sites; D002873:Chromosome Fragility; D002874:Chromosome Mapping; D015342:DNA Probes; D004586:Electrophoresis; D005260:Female; D005600:Fragile X Syndrome / Q000235:genetics*; D008040:Genetic Linkage; D006801:Humans; D008297:Male; D012729:Sex Chromosome Aberrations / Q000235:genetics*; D014960:X Chromosome
chemical_list: D015342:DNA Probes