A cosmid contig and high resolution restriction map of the 2 megabase region containing the Huntington's disease gene

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Abstract
The quest for the mutation responsible for Huntington's disease (HD) has required an exceptionally detailed analysis of a large part of 4p16.3 by molecular genetic techniques, making this stretch of 2.2 megabases one of the best characterized regions of the human genome. Here we describe the construction of a cosmid and P1 clone contig spanning the region containing the HD gene, and the establishment of a detailed, high resolution restriction map. This ordered clone library has allowed the identification of several genes from the region, and has played a vital role in the recent identification of the Huntington's disease gene. The restriction map provides the framework for the detailed analysis of a region extremely rich in coding sequences. This study also exemplifies many of the strategies to be used in the analysis of larger regions of the human genome.