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Isolation and characterization of karlotoxin 1, a new amphipathic toxin from Karlodinium veneficum.


ABSTRACT: The karlotoxins (KmTxs) are a family of compounds produced by the dinoflagellate Karlodinium veneficum that cause membrane permeabilization. The structure of KmTx 1, determined using extensive 2D NMR spectroscopy, is very similar to the amphidinols and related compounds, though KmTx 1 features unique structural modifications of the conserved core region. The structure of KmTx 1 differs from that reported for KmTx 2, the only other reported karlotoxin to date, in lacking chlorination at its terminal alkene and possessing a hydrophobic arm that is two carbons longer.

SUBMITTER: Van Wagoner RM 

PROVIDER: S-EPMC2928153 | biostudies-literature | 2008 Nov

REPOSITORIES: biostudies-literature

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Isolation and characterization of karlotoxin 1, a new amphipathic toxin from Karlodinium veneficum.

Van Wagoner Ryan M RM   Deeds Jonathan R JR   Satake Masayuki M   Ribeiro Anthony A AA   Place Allen R AR   Wright Jeffrey L C JL  

Tetrahedron letters 20081101 45


The karlotoxins (KmTxs) are a family of compounds produced by the dinoflagellate Karlodinium veneficum that cause membrane permeabilization. The structure of KmTx 1, determined using extensive 2D NMR spectroscopy, is very similar to the amphidinols and related compounds, though KmTx 1 features unique structural modifications of the conserved core region. The structure of KmTx 1 differs from that reported for KmTx 2, the only other reported karlotoxin to date, in lacking chlorination at its termi  ...[more]

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