Ricin molecule

Ricin molecule

A617/0096

Rights Managed

Caption

Ricin. Computer model of a molecule of the toxic protein ricin. It comprises two amino acid chains, an A-chain (blue) and a B-chain (red). The A-chain is toxic, inhibiting protein synthesis in cells. It is carried into cells by the non-toxic B-chain. Ricin is derived from the seeds of the castor oil plant (Ricinus communis). Less than a milligram is enough to kill an adult. Inhaling ricin causes coughing, pulmonary oedema and death. If ingested, it causes gastroenteritis, liver and kidney damage and death from circulatory failure. There is no antidote. Ricin could be used as a bioterrorism agent. The protein (529 amino acids) includes beta sheets (arrows) and alpha helices (cylinders).

Release details

Model release not required. Property release not required.

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