melanosome

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melanosome

 [mel´ah-no-sōm″]
any of the granules that contain melanin. The melanin is synthesized within melanocytes; then the melanosomes are transferred to keratinocytes.

mel·a·no·some

(mel'ă-nō-sōm'),
The generally oval pigment granule (0.2 by 0.6 mcm) produced by melanocytes.
Synonym(s): eumelanosome
[melano- + G. sōma, body]

melanosome

/mel·a·no·some/ (mel´ah-no-sōm″) any of the granules within the melanocytes that contain tyrosinase and synthesizes melanin; they are transferred from the melanocytes to keratinocytes.

melanosome

[mel′ənōsōm′]
one of the oval pigment granules within melanocytes that synthesize melanin.

melanosome

A large (500-nm) lysosome-related pigment-containing organelle, which provides tissues with colour and photoprotection. They are the site of synthesis, storage and transport of melanin pigments and are synthesised in skin melanocytes, in choroidal melanocytes and in retinal pigment epithelial cells in the eye of mammals.

mel·a·no·some

(mel'ă-nō-sōm)
The generally oval pigment granule (0.2 by 0.6 mcm) produced by melanocytes.
[melano- + G. sōma, body]

melanosome

oval pigmented granule produced by specialized Golgi apparatus of melanocytes; granules are transferred via melanocyte dendrites into local keratinocytes, causing skin and hair pigmentation (racial differences in skin colour relate to melanocyte activity, not to melanocyte numbers); melanosomes are concentrated over superior pole of nucleus within keratinocytes, to protect nuclear DNA from harmful effects of ultraviolet irradiation

melanosome

any of the granules that contain melanin. The melanin is synthesized within melanocytes, then the melanosomes are transferred to keratinocytes.
References in periodicals archive ?
Diversity in the shape and size of melanosomes allows scientists to decipher color.
In melanophores, the melanophore-stimulating hormone induces the dispersal of melanosomes (darkening), whereas both the melanin concentrating hormone and melatonin (MT) have the opposite effect, resulting in a pale or bleaching color (in darkness, both sexes of Q.
In white skin, melanosomes are small, not very heavily pigmented and form membrane-bound clusters in the keratinocytes that are eventually degraded generating 'melanin dust' in suprabasal layers of the skin.
This collection of thirteen scholarly articles on pigment and pigmentation showcases recent and cutting edge research on melanins and melanosomes from important biologists, geneticists and gerontologists around the world.
Tyrosinase is a protein found in melanosomes that is essential for the synthesis of melanin.
They analyzed melanins and melanosomes in hair and skin from adult pigmented Argentine llamas, and their results showed that pheomelanins were present in small quantities in each sample.
In particular, protein 3 exhibits more-than-expected gold particles in endosomal vacuoles and melanosomes.
12) Electron microscopy may identify the presence of melanosomes or premelanosomes.
Simon found that the pigment produced by cells in black-haired individuals has an oxidation potential "indicating that it's thermodynamically unfavorable for black melanosomes to activate oxygen.
colleagues are now able to show that they are in fact remnants of the animals' own colours, and that the micrometre-sized bodies are fossilised melanosomes, or pigment-containing cellular organelles.