OMIA 001249-452646 : Coat colour, brown in Neovison vison

In other species: cattle , horse , dog , domestic cat , sheep , pig , golden hamster , North American deer mouse , goat , rabbit

Possibly relevant human trait(s) and/or gene(s)s (MIM numbers): 612271 , 203290

Mendelian trait/disorder: yes

Mode of inheritance: Autosomal Recessive

Considered a defect: no

Key variant known: yes

Year key variant first reported: 2016

Species-specific description: The following summary has been provide by Cirera et al. (2016): "In American mink (Neovison vison), a total of 12 phenotypes display a brown appearance in a wide range (Nes et al., 1988). . . . The various brown coat colours in American mink have a brownish appearance that can vary within the phenotype but also during the animal life. However, for commercial purposes the colours are recorded at the pelting time, which is when the fur colour has reached its “maturity”. One important colour in the brown spectrum of mink is American Palomino (AP) . . . symbolized as kk in the Scandinavian nomenclature and b^p b^p in the American nomenclature (Nes et al. 1988). The AP mutant appeared first in a farm in Canada in the middle of the twentieth century (King 1951). The coat colour appears as a clear pale tan, and on a prime pelt it easily turns slightly red while the eyes are pink or red (Nes et al. 1988).

Inheritance: "All brown phenotypes are inherited as a simple recessive trait, thus only homozygous individuals display the phenotype." (Cirera et al., 2016)

Mapping: Based on mink sequence homology to human and dog (Graphodatsky et al. 2000; Hameister et al. 1997), the gene and sequences were located by Cirera et al. (2016) to mink chromosome 2, close to the centromere.

Molecular basis: Sequencing of the positional/functional candidate gene TRYP1 revealed the likely causal mutation to be an insert of approximately 8kb at the beginning of intron 2, which is likely to disrupt slicing.

Associated gene:

Symbol Description Species Chr Location OMIA gene details page Other Links
TYRP1 Neovison vison - no genomic information (-..-) TYRP1 Ensembl

References


Note: the references are listed in reverse chronological order (from the most recent year to the earliest year), and alphabetically by first author within a year.
2016 Cirera, S., Markakis, M.N., Kristiansen, T., Vissenberg, K., Fredholm, M., Christensen, K., Anistoroaei, R. :
A large insertion in intron 2 of the TYRP1 gene associated with American Palomino phenotype in American mink. Mamm Genome 27:135-43, 2016. Pubmed reference: 26886941. DOI: 10.1007/s00335-016-9620-4.
2000 Graphodatsky, A.S., Yang, F., Serdukova, N., Perelman, P., Zhdanova, N.S., Ferguson-Smith, M.A. :
Dog chromosome-specific paints reveal evolutionary inter- and intrachromosomal rearrangements in the American mink and human. Cytogenet Cell Genet 90:275-8, 2000. Pubmed reference: 11124533. DOI: 56788.
1997 Hameister, H., Klett, C., Bruch, J., Dixkens, C., Vogel, W., Christensen, K. :
Zoo-FISH analysis: the American mink (Mustela vison) closely resembles the cat karyotype. Chromosome Res 5:5-11, 1997. Pubmed reference: 9088638.
1988 Nes, N.N., Einarsson, E.J., Lohi, O. :
Beautiful fur animals—and their colour genetics Scientifur, Hilleroed :, 1988.
1951 King, R.C. :
Genetics of mink International Publishers Co, Duluth :, 1951.

Edit History


  • Created by Frank Nicholas on 13 Apr 2016
  • Changed by Frank Nicholas on 13 Apr 2016