“Pigmentation, which is primarily determined by the amount, the type, and the distribution of
melanin, shows a remarkable diversity in human populations, and in this sense, it is an …

So far it is not known whether epidermal melanins are solely photoprotective or also
phototoxic. Also largely unknown are underlying UV-induced mechanisms and impact of the …

Excited-state proton transfer has been hypothesized as a mechanism for UV energy
dissipation in eumelanin skin pigments. By using time-resolved fluorescence spectroscopy …

We characterize for the first time the vibrational state of natural pheomelanin using Raman
spectroscopy and model pigment synthesized from 5-S-cysteinyldopa. The shape of the …

The color of human eyes is largely dependent on the amount, type, and distribution of
melanin present in the iris [1, 2]. However, the iris is not the only part of the uveal tract that …

Central to understanding the photochemical function (s) of melanosomes is the
determination of their absorption properties and an understanding of how the absorption …

Melanosomes are important organelles melanin is produced stored and mobilized
throughout animal tissues. Melanins confer unique properties to these organelles, including …

Central to understanding the photochemical properties of melanosomes is a direct
measurement of their absorption coefficients. Herein, the absorption spectra of intact …

Skin coloration can be affected by many genetic, environmental and pharmacological
factors. Zebrafish (Danio rerio) are a useful and versatile model organism in biomedical …

Uveal melanosomes from the iridal stroma contain both eumelanin and pheomelanin, the
ratio of which varies with iris color. Herein, we report the absorption coefficient at λ= 244 nm …