A pigment in red hair may have a secret superpower: It can turn a toxic threat into a splash of color. Scientists studying ...

A pigment that makes feathers and hair orange helps prevent cellular damage by removing excess cysteine from cells.

Eating a high-fat diet will typically result in weight gain. But a new study published in Nature Metabolism has uncovered an unexpected biological loophole that turns fat storage into fat usage. In ...

Historically, much of weight loss advice focused on eating less and moving more. In recent times, researchers discovered that what, and not just how much, someone eats also influences weight loss and ...

As the most reactive member of nature’s standard stable of amino acids, cysteine is commonly tapped as a nucleophile in enzyme active sites. But cysteine’s reactivity also makes it uniquely ...

All proteins are built from the same 20 amino acids. One of these, cysteine, was assumed not to have been present at the origin of life. In a new study, scientists have recreated how cysteine was ...