Molecular characterization of the Himalayan mink

Molecular characterization of the Himalayan mink A rare color variant of the American mink (Neovison vison), discovered on a ranch in Nova Scotia and referred to as the “marbled” variety, carries a distinctive pigment distribution pattern resembling that found in some other species, e.g., the Siamese cat and the Himalayan mouse. We tested the hypothesis that the color pattern in question—light-colored body with dark-colored points (ears, face, tail, and feet)—is due to a mutation in the melanin-producing enzyme tyrosinase (TYR) that results in temperature-sensitive pigment production. Our study shows that marbled mink carry a mutation in exon 4 of the TYR gene (c.1835C > G) which results in an amino acid substitution (p.H420Q). The location of this substitution corresponds to the amino acid position that is also mutated in the TYR protein of the Himalayan mouse. Thus, the marbled variant is more aptly referred to as the Himalayan mink. http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Mammalian Genome Springer Journals

Molecular characterization of the Himalayan mink

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Publisher
Springer-Verlag
Copyright
Copyright © 2009 by Springer Science+Business Media, LLC
Subject
Life Sciences; Zoology ; Anatomy ; Cell Biology
ISSN
0938-8990
eISSN
1432-1777
D.O.I.
10.1007/s00335-009-9177-6
Publisher site
See Article on Publisher Site

Abstract

A rare color variant of the American mink (Neovison vison), discovered on a ranch in Nova Scotia and referred to as the “marbled” variety, carries a distinctive pigment distribution pattern resembling that found in some other species, e.g., the Siamese cat and the Himalayan mouse. We tested the hypothesis that the color pattern in question—light-colored body with dark-colored points (ears, face, tail, and feet)—is due to a mutation in the melanin-producing enzyme tyrosinase (TYR) that results in temperature-sensitive pigment production. Our study shows that marbled mink carry a mutation in exon 4 of the TYR gene (c.1835C > G) which results in an amino acid substitution (p.H420Q). The location of this substitution corresponds to the amino acid position that is also mutated in the TYR protein of the Himalayan mouse. Thus, the marbled variant is more aptly referred to as the Himalayan mink.

Journal

Mammalian GenomeSpringer Journals

Published: Mar 24, 2009

References

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