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. 1989 Feb 25;17(4):1315–1326. doi: 10.1093/nar/17.4.1315

Pulse-field linkage of the P3, G6pd and Cf-8 genes on the mouse X chromosome: demonstration of synteny at the physical level.

N Brockdorff 1, L C Amar 1, S D Brown 1
PMCID: PMC331805  PMID: 2922282

Abstract

Utilising pulse-field gel electrophoresis physical linkage between three mouse X-linked genes has been demonstrated. The three genes, P3, G6pd and Cf-8 all lie within 400 Kb of DNA. This physical linkage mirrors the situation on the human X chromosome, representing the first demonstration of mouse/human synteny at the physical level. A detailed physical map encompassing 1.6 Mbp of this region is presented. A number of the rare cutter restriction enzyme sites within this map are partially blocked on the inactive X chromosome, presumably due to the methylation of CpG rich islands. Pulsed field gel electrophoresis therefore provides a useful tool for the study of X-inactivation over large regions of the X chromosome.

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