A YAC contig in Xq22.3-q23, from DXS287 to DXS8088, spanning the brain-specific genes doublecortin (DCX) and PAK3.
Although several genes for mental retardation and epilepsy, including double cortex/X-linked lissencephaly (DC/XLIS), have been localized to Xq21.3-q23, there has been no complete physical map of this region available. We constructed a YAC/ STS contig map by initiating two yeast artificial chromosome (YAC) walks from the markers that flanked the DC/XLIS candidate gene region. We report an approximately 4-Mb contig extending from DXS287 to DXS8088, encompassing DXS1072 and DXS1059, and composed of 52 YACs identified with 15 previously published STSs and 19 novel YAC-end STSs. This contig also contains two brain-specific genes, doublecortin (HGMW-approved symbol DCX), responsible for DC/XLIS, and PAK3, which may be responsible for neurological diseases localized to this region. The new contig extends and incorporates several previously published contigs, providing a total overlapping contig extending approximately 34 Mb from DXS441 in Xq13.1 to DXS8088 in Xq23.[1]References
- A YAC contig in Xq22.3-q23, from DXS287 to DXS8088, spanning the brain-specific genes doublecortin (DCX) and PAK3. Allen, K.M., Gleeson, J.G., Shoup, S.M., Walsh, C.A. Genomics (1998) [Pubmed]
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