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Retraction.

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Retraction Notice↗

Molecular structure of charybdotoxin: retraction.

Shortly after our paper of 3 August 1990 on the molecular structure of charybdotoxin (1) was published, two independent determinations of the structure of this molecule appeared (2) that were similar to each other and in strong disagreement with ours. We have obtained new data and find that some spectral features depend on solvent conditions, which explains some differences between our data and those of the other groups. More important, we conclude that we most probably misassigned an important sequence of amino acids, as suggested by Bontems et al.(3). Therefore, we withdraw our previously reported structure (1) and regret any inconvenience it may have caused. We thank F. Toma for sending us a copy of his paper before publication and for discussions.

Journal Article↗