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Proceedings of the National Academy of Sciences of the United States of America logoLink to Proceedings of the National Academy of Sciences of the United States of America
. 1991 Oct 1;88(19):8302–8306. doi: 10.1073/pnas.88.19.8302

Physical map of human Xq27-qter: localizing the region of the fragile X mutation.

A Poustka 1, A Dietrich 1, G Langenstein 1, D Toniolo 1, S T Warren 1, H Lehrach 1
PMCID: PMC52496  PMID: 1924290

Abstract

We describe a physical map of the end of the long arm of the human X chromosome encompassing the region from Xq27.2 to the q telomere, inclusive of the chromosomal band Xq28. This region is of particular interest, since it contains the highest density of genes associated with genetic diseases. The map covers a total of 12 megabases (Mb) of DNA and extends from the telomere to 3 Mb beyond the most likely position of the fragile X mutation, defined by a cluster of translocation breakpoints in somatic cell hybrids. The map determines order and position of loci throughout the Xq28 region and localizes cell line breakpoints marking the fragile X region to an interval of 300-700 kilobases between 8 and 8.7 Mb proximal of the Xq telomere.

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Selected References

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