The proteins of barnacle glue, they discovered, are dominated by amino acids called proline and isoleucine.

ECONOMIST: A species of crustacean makes silk underwater

The fragment is also rich in an amino acid called proline.

BBC: Cause of dietary disorder uncovered

Researchers reasoned that an enzyme that breaks down proteins, which had the ability to digest proline-rich chains might be able to break down the gliadin fragment, making it harmless.

BBC: Cause of dietary disorder uncovered