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Hoffmann, R. A wiki for the life sciences where authorship matters. Nature Genetics (2008)
 
 
 
 

Concordance between isolated cleft palate in mice and alterations within a region including the gene encoding the beta 3 subunit of the type A gamma-aminobutyric acid receptor.

Genetic and molecular analyses of a number of radiation-induced deletion mutations of the pink-eyed dilution (p) locus in mouse chromosome 7 have identified a specific interval on the genetic map associated with a neonatally lethal mutation that results in cleft palate. This interval, closely linked and distal to p, and bracketed by the genes encoding the alpha 5 and beta 3 subunits of the type A gamma-aminobutyric acid receptor ( Gabra5 and Gabrb3, respectively), contains a gene(s) (cp1; cleft palate 1) necessary for normal palate development. The cp1 interval extends from the distal breakpoint of the prenatally lethal p83FBFo deletion to the Gabrb3 locus. Among 20 p deletions tested, there was complete concordance between alterations at the Gabrb3 transcription unit and inability to complement the cleft-palate defect. These mapping data, along with previously described in vivo and in vitro teratological effects of gamma-aminobutyric acid or its agonists on palate development, suggest the possibility that a particular type A gamma-aminobutyric acid receptor that includes the beta 3 subunit may be necessary for normal palate development. The placement of the cp1 gene within a defined segment of the larger D15S12h (p)-D15S9h-1 interval in the mouse suggests that the highly homologous region of the human genome, 15q11-q13, be evaluated for a role(s) in human fetal facial development.[1]

References

  1. Concordance between isolated cleft palate in mice and alterations within a region including the gene encoding the beta 3 subunit of the type A gamma-aminobutyric acid receptor. Culiat, C.T., Stubbs, L., Nicholls, R.D., Montgomery, C.S., Russell, L.B., Johnson, D.K., Rinchik, E.M. Proc. Natl. Acad. Sci. U.S.A. (1993)
 
 
 
 
 
 
 
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