Abstract:
:Albino phenotypes are documented in various species including the American mink. In other species the albino phenotypes are associated with tyrosinase (TYR) gene mutations; therefore TYR was considered the candidate gene for albinism in mink. Four microsatellite markers were chosen in the predicted region of the TYR gene. Genotypes at the markers Mvi6025 and Mvi6034 were found to be associated with the albino phenotype within an extended half-sib family. A BAC clone containing Mvi6034 was mapped to chromosome 7q1.1-q1.3 by fluorescent in situ hybridization. Subsequent analysis of genomic TYR sequences from wild-type and albino mink samples identified a nonsense mutation in exon 1, which converts a TGT codon encoding cysteine to a TGA stop codon (c.138T>A, p.C46X; EU627590). The mutation truncates more than 90% of the normal gene product including the putative catalytic domains. The results indicate that the nonsense mutation is responsible for the albino phenotype in the American mink.
journal_name
Anim Genetjournal_title
Animal geneticsauthors
Anistoroaei R,Fredholm M,Christensen K,Leeb Tdoi
10.1111/j.1365-2052.2008.01788.xsubject
Has Abstractpub_date
2008-12-01 00:00:00pages
645-8issue
6eissn
0268-9146issn
1365-2052pii
AGE1788journal_volume
39pub_type
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