The primary structure of a short neurotoxin homologue from Dendroaspis polylepis polylepis (Black mamba) venom
Autor: | F. J. Joubert |
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Jazyk: | afrikánština |
Rok vydání: | 1984 |
Předmět: | |
Zdroj: | South African Journal of Science and Technology, Vol 3, Iss 3, Pp 169-174 (1984) |
ISSN: | 2222-4173 0254-3486 |
Popis: | Toxin CM-7 was purified from black mamba venom by gel filtration on Sephadex G-50 followed by ion exchange chromotography on CM-cellulose. It contains 60 amino acids, including eight half-cystines. The complete amino acid sequence of toxin CM-7 has been elucidated. In toxin CM-7 the eleven structurally invariant amino acids of the neurotoxins and cardiotoxins are conserved, but it has only one of the five functionally invariant amino acids of the neurotoxins. The eight cysteine residues of toxin CM-7 are in the same locations as those in short neurotoxins of known structures and are presumed to be similarly cross-linked. The sequence of CM-7 is structurally homologous with the short neurotoxins, but it is less toxic. |
Databáze: | OpenAIRE |
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