A chromosome jump crosses a translocation breakpoint in the von Recklinghausen neurofibromatosis region.

Journal Article (Journal Article)

The von Recklinghausen neurofibromatosis (NFI) gene has been previously localized to the region 17q11.2 by genetic analysis. Consistent with this, two NFI patients have been described with autosomal translocations with breakpoints in 17q11.2, and these represent presumed markers for the location of the NFI gene. Recent work has defined the two breakpoints on a physical map, and they lie less than 100 kb apart. To characterize further the distance between these breakpoints and clone additional DNA, a chromosome jump was made from a DNA fragment that maps between the breakpoints. The end of the jump crosses one of the NFI translocation breakpoints and detects that breakpoint on Southern analysis, placing the probe less than 15 kb telomeric to this breakpoint. Pulsed field analysis with the jump clone allows revision of the previous NFI region map and indicates that the two breakpoints lie no more than 60 kb apart. This jump clone will be useful for further mapping, breakpoint cloning, analysis of patient DNA, and the search for transcripts in the NFI region.

Full Text

Duke Authors

Cited Authors

  • Wallace, MR; Andersen, LB; Fountain, JW; Odeh, HM; Viskochil, D; Marchuk, DA; O'Connell, P; White, R; Collins, FS

Published Date

  • November 1990

Published In

Volume / Issue

  • 2 / 4

Start / End Page

  • 271 - 277

PubMed ID

  • 2176541

International Standard Serial Number (ISSN)

  • 1045-2257

Digital Object Identifier (DOI)

  • 10.1002/gcc.2870020404


  • eng

Conference Location

  • United States