A simple and high yield purification of Crotalus adamanteus phospholipases A2

A new, high yield, procedure for the purification of the phospholipases A2 of Crotalus adamanteus venom is described. The procedure involves precipitation of the bulk of venom proteins with 50% isopropanol, precipitation of the enzymes from the isopranol soluble material with neodynium chloride, and final purification on DEAE cellulose. An overall yield of approximately 80% is achieved.