Localization of cDNAs to a region poorly represented in the CEPH chromosome 21 YAC contig: Candidate genes for genetic diseases mapped to 21q22.3
- Eleanor Roosevelt Inst., Denver, CO (United States)
- National Cancer Center, Tokyo (Japan)
- Lawerence Berkeley National Lab., CA (United States)
Fifty-three cDNA fragments previously obtained by hybridization selection from random clones in the chromosome 21 cosmid library LL21CNO2 failed to identify clones in the chromosome 21 YAC contig described. Using an expanded panel of somatic cell hybrids, we have verified that the majority of these cDNAs map to chromosome 21 and that in particular a very high proportion, {approximately}85%, localize to a 5-Mb region of distal 21q22.3. Pulsed-field analysis coupled with information from the NotI restriction map of the region further indicate that 17 cDNA fragments map within 650 kb of the PFKL gene and thus may be candidates for genetic diseases linked to this gene. This work helps to characterize a region poorly represented in the CEPH YAC contig and adds to the number of cDNAs useful in analysis of chromosome 21-associated diseases. 4 refs., 3 figs., 1 tab.
- OSTI ID:
- 446988
- Journal Information:
- Genomics, Journal Name: Genomics Journal Issue: 2 Vol. 30; ISSN 0888-7543; ISSN GNMCEP
- Country of Publication:
- United States
- Language:
- English
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