Construction of two YAC contigs in human Xp11.23-p11.22, one encompassing the loci OATL1, GATA, TFE3, and SYP, the other linking DXS255 to DXS146.

Journal article

We have constructed two YAC contigs in the Xp11.23-p11.22 interval of the human X chromosome, a region that was previously poorly characterized. One contig, of at least 1.4 Mb, links the pseudogene OATL1 to the genes GATA1, TFE3, and SYP and also contains loci implicated in Wiskott-Aldrich syndrome and synovial sarcoma. A second contig, mapping proximal to the first, is estimated to be over 2.1 Mb and links the hypervariable locus DXS255 to DXS146, and also contains a chloride channel gene that is responsible for hereditary nephrolithiasis. We have used plasmid rescue, inverse PCR, and Alu-PCR to generate 20 novel markers from this region, 1 of which is polymorphic, and have positioned these relative to one another on the basis of YAC analysis. The order of previously known markers within our contigs, Xpter-OATL1-GATA-TFE3-SYP-DXS255146- Xcen, agrees with genomic pulsed-field maps of the region. In addition, we have constructed a rare-cutter restriction map for a 710-kb region of the DXS255-DXS146 contig and have identified three CPG islands. These contigs and new markers will provide a useful resource for more detailed analysis of Xp11.23-p11.22, a region implicated in several genetic diseases.

Authors: Fisher, S; Hatchwell, E; Chand, A; Ockenden, N; Monaco, A

• Publication status: Published
• Journal: Genomics
• Volume: 29
• Issue: 2
• Pages: 496-502
• Publication date: 1995-09-01
• DOI: 10.1006/geno.1995.9976
• EISSN: 1089-8646
• ISSN: 0888-7543
• Language: English
• Keywords: Protein Tyrosine Phosphatases; Animals; Molecular Sequence Data; Genetic Markers; Chromosome Mapping; X Chromosome; Transcription Factors; Ornithine-Oxo-Acid Transaminase; GATA1 Transcription Factor; Repetitive Sequences, Nucleic Acid; Protein Tyrosine Phosphatase, Non-Receptor Type 11; Erythroid-Specific DNA-Binding Factors; DNA-Binding Proteins; Protein Tyrosine Phosphatase, Non-Receptor Type 6; Base Sequence; Genetic Linkage; DNA Primers; Pseudogenes; Intracellular Signaling Peptides and Proteins; Humans; Chromosomes, Artificial, Yeast; Basic Helix-Loop-Helix Leucine Zipper Transcription Factors; Polymerase Chain Reaction; Restriction Mapping