An informative panel of somatic cell hybrids for physical mapping on human chromosome 19q

Linda L. Bachinski, Ralf Krahe, Billie F. White, Berend Wieringa, Duncan Shaw, Robert Korneluk, Larry H. Thompson, Keith Johnson, Michael J. Siciliano

Research output: Contribution to journalArticlepeer-review

15 Scopus citations


A panel of 22 somatic cell hybrids divides the q arm of human chromosome 19 into 22 ordered subregions. The panel was characterized with respect to 41 genetic markers. In most cases, a single fragment of chromosome 19 was present in each hybrid. In two cell lines the presence of multiple fragments of the chromosome was demonstrated by segregation of these fragments in subclones. On the basis of the results of marker analysis in this panel, the most likely order of the markers tested is MANB-D19S7-PEPD-D19S9-GPI-C/EBP-TGFB1-(CYP2A,BCKDHA,CGM2,NCA)-PSG1-(D19S8,XRCC1) -(ATP1A3,D19S19)-(D19S37,APOC2)-CKM-ERCC2-ERCC1-(D19S116,D19S117)-(D19S118, D19S119, D19S63,p36.1,D19S112,D19S62,D19S51,D19S54, D19S55)-pW39-D19S6-(D19S50,TNNT1)-D19S22-(HRC,CGB,FTL,PRKCG)-qter. This gene order is generally consistent with published physical and genetic mapping orders, although some discrepancies exist. By means of a mapping function that relates the frequency of cosegregation of markers to the distance between them, estimates were made of the sizes, in megabases, of the 19q subregions. The relative physical distances between reference markers were compared with published genetic distances for 19q. Excellent correlation was observed, suggesting that the physical distances calculated by this method are predictive of genetic distances in this region of the genome and, therefore, are just as useful in estimating relative positions of markers.

Original languageEnglish (US)
Pages (from-to)375-387
Number of pages13
JournalAmerican Journal of Human Genetics
Issue number2
StatePublished - Feb 1993
Externally publishedYes

ASJC Scopus subject areas

  • Genetics


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