melanotropin


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Related to melanotropin: melatonin, Melanocyte stimulating hormone

mel·a·no·tro·pin

(mel'ă-nō-trō'pin),
A polypeptide hormone secreted by the intermediate lobe of the hypophysis in humans (in neurohypophysis in certain other species), that causes dispersion of melanin by melanophores, resulting in darkening of the skin, presumably by promoting melanin synthesis; this effect is readily demonstated in some lower vertebrates (for example, frogs and fish); α-melanotropin is an N-acetylated peptide with 13 amino acids; β-melanotropin has 22 amino acids.

mel·a·no·tro·pin

(mel'ă-nō-trō'pin)
A polypeptide hormone secreted by the intermediate lobe of the hypophysis in humans (in neurohypophysis in certain other species) that causes dispersion of melanin by melanophores, resulting in darkening of the skin, presumably by promoting melanin synthesis; this effect is readily demonstated in some lower vertebrates, such as frogs and fish; α-melanotropin is an N-acetylated peptide with 13 amino acids; β-melanotropin has 22 amino acids.
Compare: bioregulator
Synonym(s): melanocyte-stimulating hormone, melanotrophin.

mel·a·no·tro·pin

(mel'ă-nō-trō'pin)
A polypeptide hormone secreted by the intermediate lobe of the hypophysis in humans.
Synonym(s): melanocyte-stimulating hormone.
References in periodicals archive ?
Melanotropins in the body usually degrade quickly and have overlapping binding specialties (i.e., they adhere to different melanocortin receptors).
In contrast to the melanotropins occurring in the body, which tend to degrade quickly, sometimes within seconds, the artificial ligands are more stable.