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 ...

In a new study of mice, researchers have found that an experimental drug that breaks down the amino acid cysteine slows pancreatic tumor growth by causing ferroptosis, an unusual form of cell death. A ...

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

Pennington Biomedical researchers have identified cysteine, a sulfur-containing amino acid, as a key factor in weight loss. The study, published in Nature Metabolism, reveals that calorie-restrictive ...

Mice genetically engineered to lack the ability to make the amino acid cysteine, and fed a cysteine-free diet, lost 30 percent of their body weight in just one week, a new study shows. Published ...

A diet rich in the amino acid cysteine may have rejuvenating effects in the small intestine, according to a new study from MIT. This amino acid, the researchers discovered, can turn on an immune ...