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  • Title: Chromosome-specific alpha satellite DNA: isolation and mapping of a polymorphic alphoid repeat from human chromosome 10.
    Author: Devilee P, Kievits T, Waye JS, Pearson PL, Willard HF.
    Journal: Genomics; 1988 Jul; 3(1):1-7. PubMed ID: 3220475.
    Abstract:
    Distinct subsets of the human alpha satellite repetitive DNA family can be found in the centromeric region of each chromosome. Here we described the isolation and mapping of an alpha satellite repeat unit specific for human chromosome 10, using a somatic cell hybrid in which the only human centromere derives from chromosome 10. A hierarchical higher-order repeat unit, consisting of eight tandem approximately 171-bp alphoid monomer units, is defined by six restriction endonucleases. Under high-stringency conditions, a cloned representative of this 8-mer repeat family hybridizes to chromosome 10 only, both by Southern blot analysis of a somatic cell hybrid panel and by in situ hybridization. The probe furthermore detects a polymorphic restriction pattern of the alpha satellite array on chromosome 10. These features will make this probe a valuable genetic marker for studies of the centromeric region of chromosome 10.
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