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High-resolution genetic mapping of the sucrose octaacetate taste aversion (Soa) locus on mouse Chromosome 6

High-resolution genetic mapping of the sucrose octaacetate taste aversion (Soa) locus on mouse... An acetylated sugar, sucrose octaacetate (SOA), tastes bitter to humans and has an aversive taste to at least some mice and other animals. In mice, taste aversion to SOA depends on allelic variation of a single locus, Soa. Three Soa alleles determine `taster' (Soa a ), `nontaster' (Soa b ), and `demitaster' (Soa c ) phenotypes of taste sensitivity to SOA. Although Soa has been mapped to distal Chromosome (Chr) 6, the limits of the Soa region have not been defined. In this study, mice from congenic strains SW.B6-Soa b , B6.SW-Soa a , and C3.SW-Soa a/c and from an outbred CFW strain were genotyped with polymorphic markers on Chr 6. In the congenic strains, the limits of introgressed donor fragments were determined. In the outbred mice, linkage disequilibrium and haplotype analyses were conducted. Positions of the markers were further resolved by using radiation hybrid mapping. The results show that the Soa locus is contained in a ∼1-cM (3.3–4.9 Mb) region including the Prp locus. http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Mammalian Genome Springer Journals

High-resolution genetic mapping of the sucrose octaacetate taste aversion (Soa) locus on mouse Chromosome 6

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References (22)

Publisher
Springer Journals
Copyright
Copyright © 2001 by Springer-Verlag New York Inc.
Subject
Life Sciences; Cell Biology; Anatomy; Zoology
ISSN
0938-8990
eISSN
1432-1777
DOI
10.1007/s00335-001-2061-7
Publisher site
See Article on Publisher Site

Abstract

An acetylated sugar, sucrose octaacetate (SOA), tastes bitter to humans and has an aversive taste to at least some mice and other animals. In mice, taste aversion to SOA depends on allelic variation of a single locus, Soa. Three Soa alleles determine `taster' (Soa a ), `nontaster' (Soa b ), and `demitaster' (Soa c ) phenotypes of taste sensitivity to SOA. Although Soa has been mapped to distal Chromosome (Chr) 6, the limits of the Soa region have not been defined. In this study, mice from congenic strains SW.B6-Soa b , B6.SW-Soa a , and C3.SW-Soa a/c and from an outbred CFW strain were genotyped with polymorphic markers on Chr 6. In the congenic strains, the limits of introgressed donor fragments were determined. In the outbred mice, linkage disequilibrium and haplotype analyses were conducted. Positions of the markers were further resolved by using radiation hybrid mapping. The results show that the Soa locus is contained in a ∼1-cM (3.3–4.9 Mb) region including the Prp locus.

Journal

Mammalian GenomeSpringer Journals

Published: Feb 14, 2014

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