Researchers at Rice University have engineered living cells to use a 21st amino acid that illuminates protein changes in real ...

Research has shown that reactions of alpha-hydroxy acids, similar to the alpha-amino acids that make up modern proteins, form large polymers easily under conditions presumed prevalent on early Earth.

The findings could provide a new approach to repairing tissue damage caused by radiation or chemotherapy treatment. A new ...

MIT scientists have found that an amino acid called cysteine can help the gut heal itself. In mouse studies, a cysteine-rich ...