Phaeomelanin

Some articles on phaeomelanin:

Abnormal Plumages
... schizochroism with an overall fawn plumage while a lack of phaeomelanin results in grey coloured non-phaeomelanin schizochroism ... in the above-mentioned examples a brown (phaeomelanin) and grey (eumelanin) morph exist, termed "hepatic form" particularly in the cuckoos ...
Amelanism - Melanins and Melanin Production
... Dopaquinone may become eumelanin, or phaeomelanin ... Phaeomelanin, meaning rufous-black, is characterized by the presence of sulfur-containing cysteine, and it appears reddish to yellowish as a result ... containing eumelanin are eumelanosomes, while those containing phaeomelanin are phaeomelanosomes ...
Amelanism - Aphaeomelanism
... Aphaeomelanism is the abnormal absence of phaeomelanin from the integumentary system and/or eyes ... Phaeomelanin is produced by melanocytes in the absence of melanocortin 1 receptor ... Loss of function of agouti signalling protein can permit unmediated phaeomelanin production, producing a uniformly black-to-brown coat color ...
Dogskin - Colors, Patterns, Lengths and Textures - Postulated Color and Pattern Loci
... thought to determine the degree to which an animal expresses phaeomelanin, a red-brown protein related to the production of melanin, in its coat and skin ... Five alleles are theorised to occur at the C locus C = Full color (animal expresses phaeomelanin) cch = Chinchilla (partial inhibition of phaeomelanin resulting in decreased red pigment) ce = Extreme ... the theoretical I locus are thought to affect phaeomelanin expression ...
Albinism In Birds - Abnormal Plumages
... schizochroism with an overall fawn plumage while a lack of phaeomelanin results in grey coloured non-phaeomelanin schizochroism ... plumages in the above-mentioned examples a brown (phaeomelanin) and grey (eumelanin) morph exist, termed "hepatic form" particularly in the cuckoos ...