A complete YAC contig of the Prader-Willi/Angelman chromosome region (15q11-q13) and refined localization of the SNRPN gene.

Mutirangura A, Jayakumar A, Sutcliffe JS, Nakao M, McKinney MJ, Buiting K, Horsthemke B, Beaudet AL, Chinault AC, Ledbetter DH
Genomics. 1993 18 (3): 546-52

PMID: 8307564

Since a previous report of a partial YAC contig of the Prader-Willi/Angelman chromosome region (15q11-q13), a complete contig spanning approximately 3.5 Mb has been developed. YACs were isolated from two human genomic libraries by PCR and hybridization screening methods. Twenty-three sequence-tagged sites (STSs) were mapped within the contig, a density of approximately 1 per 200 kb. Overlaps between YAC clones were identified by Alu-PCR dot-blot analysis and confirmed by STS mapping or hybridization with ends of YAC inserts. The gene encoding small nuclear ribonucleoprotein-associated peptide N (SNRPN), recently identified as a candidate gene for Prader-Willi syndrome, was localized within this contig between markers PW71 and TD3-21. Loci mapped within and immediately flanking the Prader-Willi/Angelman chromosome region contig are ordered as follows: cen-IR39-ML34-IR4-3R-TD189-1-PW71-SNRPN -TD3-21- LS6-1-GABRB3,D15S97-GABRA5-IR10-1-CMW1+ ++-tel. This YAC contig will be a useful resource for more detailed physical mapping of the region, for generation of new DNA markers, and for mapping or cloning candidate genes for the Prader-Willi and Angelman syndromes.

MeSH Terms (18)

Angelman Syndrome Autoantigens Base Sequence Chromosome Mapping Chromosomes, Artificial, Yeast Chromosomes, Human, Pair 15 DNA Primers DNA Probes Female Gene Library Genetic Markers Humans Male Molecular Sequence Data Polymerase Chain Reaction Prader-Willi Syndrome Ribonucleoproteins, Small Nuclear snRNP Core Proteins

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