Definitions for abrin
A toxin akin to ricin found in jequirity beans.
Origin: From Abrus, from the genus Abrus precatorius.
U.S. National Library of Medicine
A toxic lectin from the seeds of jequirity, Abrus precatorius L. Very active poison. Five different proteins have so far been isolated: Abrus agglutinin, the component responsible for: hemagglutinating activity, & abrins a-d, the toxic principals each consisting of two peptide chains are held together by disulfide bonds.