[Isolation and mapping of arbitrary single copy DNA fragment located on human chromosome 11p11-q11]

A library of genomic DNA has been constructed in EMBL3 lambda phage, from a Chinese hamster/human lymphocytes somatic cell hybrid carrying human chromosome 11 and 20. Recombinants containing human genomic DNA origin can be isolated from the hybrid cell genomic library by using species-specific probe. 8 single copy fragments have been isolated from 13 recombinants. One of them designated as FD11-1 has been identified on chromosome 11 by hybridized it with hybrid cell clone panel and mapped on chromosome 11p11-q11 by chromosome in situ hybridization. On chromosome 11, 3 linkage groups were reported, which located on 11p15, 11p13 and 11q13 respectively. Therefore, the FD11-1 will supply a new locus on chromosome 11 for linkage analysis. Endonuclease recognizing sites and potential recognizing sites on FD11-1 will guide the further RFLP studies.