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A toxin, designated Ta2, has been isolated from the venom of the green mamba, Dendroaspis angusticeps, by ion exchange chromatography on Amberlite CG-50 and gel filtration through Sephadex G-50. Toxin Ta2 contains 60 amino acid residues, is devoid of phenylalanine and tryptophan, and is cross-linked by four intramolecular disulfide bridges. In its primary structure toxin Ta2 reveals homology with both the neuro- and cardiotoxins. Toxin Ta2 differs immunochemically completely from the long and short neurotoxins, cardiotoxins, and also from D. angusticeps toxin Ta1 (toxin FVII).
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Viljoen et al. (1974) studied this question.
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