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  • Title: Snake venom toxins. The primary structure of protein S4C11. A neurotoxin homologue from the venom of forest cobra (Naja melanoleuca).
    Author: Carlsson FH.
    Journal: Biochim Biophys Acta; 1975 Aug 19; 400(2):310-21. PubMed ID: 1164509.
    Abstract:
    Six minor protein constituents (S4C10-S4C15) have been isolated from the venom of Naja melanoleuca. The complete amino acid sequence of S4C11 has been established and indicates that it is a homologue of the neurotoxins which are found in elapid venoms. The other proteins appear from the amino acid compositions to be homologues of the cyto- or cardiotoxins found in cobra venoms. Protein S4C11 has a low toxicity, failing to kill mice at an intravenous dose of 20 mug/g body weight. The sequence of the first 25 residues out of the total of 65, was determined using the automatic sequenator. The remainder of the sequence was derived with the aid of tryptic and chymotryptic peptides. The sequence showed the unusual feature of having 65 amino acid residues including 10 half-cystine residues.
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