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Intracellular organelles mediate complex cell-based functions that often require ion-transport across their membranes. Melanosomes are organelles responsible for the synthesis of the major mammalian p...
Melanin is a pigment which is present in almost all life forms and that determines hair and skin color in humans. It helps insects protect themselves against the effects of pathogenic microorganisms a...
(Brown University) Skin, eye and hair pigmentation requires a delicate balance of acidity within the cellular compartments where melanin is made -- that balance is partly regulated, scientists now kn...
A year and a half ago, researchers at Brown University found a molecular gas pedal for melanin production. Now they've found a brake. For scientists, the finding deepens not only the basic understandi...
A GGGGCC hexanucleotide repeat expansion in the C9orf72 gene is the most common genetic cause of amyotrophic lateral sclerosis and frontotemporal dementia (C9ALS/FTD). C9orf72 encodes two C9orf72 prot...
Autophagy-initiating kinases ULK1 and ULK2 are now shown to function independently of autophagy in regulating protein trafficking from the ER.
(MedPage Today) -- Researchers turn to melanin as power source
Photothermolysis of unwanted hair depends on the presence of melanin in the hair follicle as the chromophore, but is not effective in patients with non-pigmented, melanin-sparse hair shafts and follic...
The ultrastructure of melanin granules in human hair was studied using 1,000 kV high-voltage scanning transmission electron microscopy to successfully reconstruct three-dimensional images of the whole...
Autophagy is a major intracellular degradation system by which cytoplasmic components are enclosed by autophagosomes and delivered to lysosomes. Formation of the autophagosome requires a set of autoph...
In living cells, melanin pigment is formed within melanosomes, which not only protect the cells from autodestruction, but also serve as second messenger organelles regulating important skin functions,...
ULK1 and ULK2 are thought to be essential for initiating autophagy, and Ulk1/2-deficient mice die perinatally of autophagy-related defects. Therefore, we used a conditional knockout approach to invest...