Abstract:
:The myotonic dystrophy (DM) region has been recently shown to be bracketed by two key recombinant events. One recombinant occurs in a Dutch DM family, which maps the DM locus distal to the ERCC1 gene and D19S115 (pE0.8). The other recombinant event is in a French Canadian DM family, which maps DM proximal to D19S51 (p134c). To further resolve this region, we initiated a chromosome walk in a telomeric direction from pE0.8, a proximal marker tightly linked to DM, toward the genetic locus. An Alu-PCR approach to chromosome walking in a cosmid library from flow-sorted chromosome 19 was used to isolate DM region cosmids. This effort has resulted in the cloning of a 350-kb genomic contig of human chromosome 19q13.3. New genetic and physical mapping information has been generated using the newly cloned markers from this study. As a result of this new mapping information, the minimal area that is to contain the DM gene has been redefined. Approximately 200 kb of sequence between pE0.8 and the closest proximal marker to DM, pKEX0.8, that would have otherwise been screened for DM candidate genes, has been eliminated as containing the DM gene.
journal_name
Genomicsjournal_title
Genomicsauthors
Shutler G,Korneluk RG,Tsilfidis C,Mahadevan M,Bailly J,Smeets H,Jansen G,Wieringa B,Lohman F,Aslanidis Cdoi
10.1016/0888-7543(92)90119-dsubject
Has Abstract,Author List Incompletepub_date
1992-07-01 00:00:00pages
518-25issue
3eissn
0888-7543issn
1089-8646journal_volume
13pub_type
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