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Science. 2012 Sep 21;337(6101):1536-41.

Specifying and sustaining pigmentation patterns in domestic and wild cats.

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  • 1HudsonAlpha Institute for Biotechnology, Huntsville, AL 35806, USA.

Abstract

Color markings among felid species display both a remarkable diversity and a common underlying periodicity. A similar range of patterns in domestic cats suggests a conserved mechanism whose appearance can be altered by selection. We identified the gene responsible for tabby pattern variation in domestic cats as Transmembrane aminopeptidase Q (Taqpep), which encodes a membrane-bound metalloprotease. Analyzing 31 other felid species, we identified Taqpep as the cause of the rare king cheetah phenotype, in which spots coalesce into blotches and stripes. Histologic, genomic expression, and transgenic mouse studies indicate that paracrine expression of Endothelin3 (Edn3) coordinates localized color differences. We propose a two-stage model in which Taqpep helps to establish a periodic pre-pattern during skin development that is later implemented by differential expression of Edn3.

PMID:
22997338
[PubMed - indexed for MEDLINE]
PMCID:
PMC3709578
Free PMC Article
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