LECTIN FROM RICINUS COMMUNIS RICIN,*B CH AIN

Ricin (toxin from Castor bean Ricinus communis) [A chain 96638-28-7, B chain 96638-29-8] Mr ~30,000, amorphous. Crude ricin, obtained by aqueous extraction and (NH4)2SO4 precipitation, is chromatographed on a galactosyl-Sepharose column with sequential elution of pure ricin. The second peak is due to ricin agglutinin. [Simmons & Russell Anal Biochem 146 206 1985.] It is an inhibitor of protein synthesis. EXTREMELY DANGEROUS, USE EXTREME CARE [instructions accompany product].