Ricin is renowned for its extreme toxicity, making it one of the deadliest plant-derived toxins known.
Ricin is a protein toxin derived from the seeds of the castor bean plant (Ricinus communis). Its biochemistry involves the structure, biosynthesis, cellular entry, and mechanism of action that contribute to its high toxicity. Ricin is a complex protein toxin with a distinctive structure that plays a crucial role in its toxicity.
Abrin and ricin are two highly toxic proteins derived from plants.
Abrin is a highly toxic protein that is derived from the seeds of the plant Abrus precatorius, also known as the rosary pea or jequirity bean. The brightly colored seeds of this plant contain about 0.08% of abrin. The toxin is found within the seeds and its release is prevented by the seed coat. If the seed coat is injured or destroyed (by chewing, for example) the toxin may be released. The toxic effects of abrin were first reported in the late 19th century when it was used as a poison in India.
