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Genetic and physical mapping around the properdin P gene
M P Coleman1, J C Murray, H F Willard
1Institute of Molecular Medicine, John Radcliffe Hospital, Headington, Oxford, England.
Genomics
|December 1, 1991
Summary
Researchers mapped genetic markers on the human X chromosome, refining the location of the properdin P factor (PFC) gene. This work aids in identifying disease genes in the Xp11.3-Xp11.2 region.
Area of Science:
- Human Genetics
- Molecular Biology
- Chromosomal Mapping
Background:
- Polymorphic CA repeats are valuable genetic markers.
- The human X chromosome harbors genes associated with various disorders.
Purpose of the Study:
- To genetically map CA repeat markers and the properdin P factor (PFC) gene on the human X chromosome.
- To refine the physical location of PFC and identify potential starting points for disease gene discovery.
Main Methods:
- Genetic mapping using CEPH families.
- Analysis of yeast artificial chromosomes (YACs).
- Identification and characterization of CA repeat markers.
Main Results:
- Established the genetic order: Xpter-(DXS7, MAO-A, DXS228)-(PFC, DXS426)-(TIMP, OATL1)-DXS255-Xcen.
- Localized PFC to the Xp11.3-Xp11.23 region.
- Identified YACs containing PFC, DXS426, and TIMP, confirming their order and proximity.
Conclusions:
- The refined mapping of PFC provides a more precise location on the X chromosome.
- The characterized YACs serve as a resource for positional cloning of disease genes in Xp11.3-Xp11.2.
- This research facilitates the search for genes implicated in conditions like retinitis pigmentosa and Wiskott-Aldrich syndrome.