Snake venoms. The amino-acid sequence of protein S5C4 from Dendroaspis jamesoni kaimosae (Jameson's mamba) venom.

A major component (S5C4) was purified from Jameson's mamba by gel filtration on Sephadex G-50 and by ion-exchange chromotography on CM-cellulose. Protein S5C4 contains 60 amino acid residues and is cross-linked by four intrachain disulphide bridges. The complete primary structure of the protein has been elucidated. The toxicities, the immunochemical properties, the sequence and the invariant amino acid residues of protein S5C4 resemble subgroup II of the angusticeps-type proteins.