[Three neurotoxins of Naja melanoleuca venom].

A serological study of three fractions extracted from Naja melanoleuca venom has demonstrated that one of these fractions belongs to the serological group I according to the classification we have established. It is a curary-like "short" toxin (61 amino-acid residues, 8 half cystine). The second and the third fractions belong to the serological group III, i.e., to the group of "long curary-like toxins" (71 amino-acids residues, 10 half cystines).