Phospholipase A2 from cobra (Naja naja naja) venom. Primary structure and subspecies variation.

The primary structure of phospholipase A2 of the major race of Indian cobra has been determined. Together with previous data on other subforms, it establishes subspecies variations at no less than 20 of the 119 positions in the protein. These variations are large, not only in number but in several cases also regarding properties of the residues involved. Nevertheless, all structures are compatible with largely unaltered enzyme properties.