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    Hoppe Seylers Z Physiol Chem. 1977 Aug;358(8):985-8.

    Amino acid sequence of toxin III from Anemonia sulcata.

    Bĕress L, Wunderer G, Wachter E.

    Abstract

    Toxin III, the smallest toxin component of the poison of the sea anemone Anemonia sulcata, is a polypeptide with 27 amino acids. Its structure is stabilized by three disulfide bridges. The amino acid sequence was determined by solid-phase Edman degradation of the aminoethylated derivative. The peptide was coupled to the carrier, porous glass, by thiourea bridges between the alpha-amino group of arginine-1 and the epsilon-amino group of lysine-26 and the isothiocyanate groups of the carrier. Another fraction of the polypeptide was bound by an acid-amide condensation of the C-terminal valine-27 with the aminopropyl group of the carrier. The sequence of toxin III has no regions homologous to the 47-residue toxin II. Comparison with the known partial sequence of toxin I, which contains 46 amino acids (Wunderer, G. & Eulitz, M., in preparation) also fails to reveal homologies.

    PMID:
    21843
    [PubMed - indexed for MEDLINE]

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