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Ricin (/ ˈ r aɪ s ɪ n / RY-sin) is a lectin (a carbohydrate-binding protein) and a highly potent toxin produced in the seeds of the castor oil plant, Ricinus communis.The median lethal dose (LD 50) of ricin for mice is around 22 micrograms per kilogram of body weight via intraperitoneal injection.
Although the lethal dose in adults is considered to be four to eight seeds, reports of actual poisoning are relatively rare. [21] According to the Guinness World Records, this is the world's most poisonous common plant. [22] If ricin is ingested, symptoms commonly begin within two to four hours, but may be delayed by up to 36 hours.
Biological agents, ... Ricin: Castor bean (Ricinus ... The treaty is considered to have established a strong global norm against biological weapons, [14] ...
One example of the powerful biological attributes of lectins is the biochemical warfare agent ricin. The protein ricin is isolated from seeds of the castor oil plant and comprises two protein domains. Abrin from the jequirity pea is similar: One domain is a lectin that binds cell surface galactosyl residues and enables the protein to enter cells.
Axel Rudakubana, 18, will appear at Westminster Magistrates’ Court by video link on Wednesday charged with production of a biological toxin called ricin
No ricin present at scene of attack, police say. The 18-year-old has also been charged with producing ricin, a poison found in castor beans, contrary to section one of the Biological Weapons Act 1984.
The castor seed contains ricin, a toxic lectin. Heating during the oil extraction process denatures and deactivates the lectin. Harvesting castor beans, though, may not be without risk. [58] The International Castor Oil Association FAQ document states that castor beans contain an allergenic compound called CB1A.
Betty Miller was charged on Thursday with violating U.S. laws that prohibit possessing biological weapons after tests revealed that she had manufactured ricin powder at the Wake Robin retirement ...