OMIA:000201-9897 : Coat colour, agouti in Aepyceros melampus (impala)

In other species: Tasmanian devil , gray wolf , coyote , dog , red fox , domestic cat , leopard , ass (donkey) , horse , pig , Arabian camel , llama , Western roe deer , taurine cattle , goat , sheep , rabbit , tassel-eared squirrel , North American deer mouse , Mongolian gerbil , meadow voles , domestic guinea pig , alpaca , leopard cat , oldfield mouse , Kodkod , Colocolo , Asiatic golden cat , Northern mole vole , Eurasian water mole

Categories: Pigmentation phene

Links to possible relevant human trait(s) and/or gene(s) in OMIM: 611742 (trait) , 600201 (gene)

Mendelian trait/disorder: yes

Mode of inheritance: Autosomal recessive

Considered a defect: no

Key variant known: yes

Year key variant first reported: 2016

Cross-species summary: This locus, ASIP, encodes the agouti signalling protein, a peptide antagonist of the melanocyte-stimulating hormone receptor (MC1R), which is the product of the extension locus. As explained by Schneider et al. (PLoS Genet 10(2): e1004892; 2015), "The most common causes of melanism (black coat) mutations are gain-of-function alterations in MC1R, or loss-of function alterations in ASIP, which encodes Agouti signaling protein, a paracrine signaling molecule that inhibits MC1R signaling".

Species-specific description: As reported by Miller et al. (2016), wild-type impala have a reddish-fawn coat. The other coat colour, black, appears to due to homozygosity for an autosomal recessive allele.

Inheritance: Miller et al. (2016) reported autosomal recessive inheritance of black, with confirmatory data to be published in a forthcoming paper.

Molecular basis: Miller et al. (2016): c.174delA is the likely causal mutation of autosomal recessive black

Associated gene:

Symbol Description Species Chr Location OMIA gene details page Other Links
ASIP Aepyceros melampus - no genomic information (-..-) ASIP Ensembl

Cite this entry

Nicholas, F. W., Tammen, I., & Sydney Informatics Hub. (2016). OMIA:000201-9897: Online Mendelian Inheritance in Animals (OMIA) [dataset].


2016 Miller, S.M., Guthrie, A.J., Harper, C.K. :
Single base-pair deletion in ASIP exon 3 associated with recessive black phenotype in impala (Aepyceros melampus). Anim Genet 47:511-2, 2016. Pubmed reference: 26953229. DOI: 10.1111/age.12430.

Edit History

  • Created by Frank Nicholas on 26 Mar 2016
  • Changed by Frank Nicholas on 26 Mar 2016