Abstract
The family of ω-conotoxins isolated from paralytic venomous of Conus snails has been known to be an antagonist of presynaptic N-type calcium ion channels. They share certain similarities to the newly discovered family of antimicrobial macrocyclic peptides found in plant [1]. Both are basic peptides with a four-β-loop scaffold constrained by a cystine-knot disulfide motif. We have prepared three cyclic ω-conotoxin analogues with different disulfide constraints to determine whether the open-chain co-conotoxins are microbicidal and whether their activity can be improved by end-to-end cyclic analogues mimicking the plant macrocycles. In addition, we have also determined their hemolytic and chemotactic activities attendant to membranolytic and defense mechanisms of antimicrobials.
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Yang, JL., Lu, YA., Wu, C., Tam, J.P. (2001). Antimicrobial and Chemotactic Activities of ω-Conotoxin Cyclic Analogues. In: Lebl, M., Houghten, R.A. (eds) Peptides: The Wave of the Future. American Peptide Symposia, vol 7. Springer, Dordrecht. https://doi.org/10.1007/978-94-010-0464-0_225
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DOI: https://doi.org/10.1007/978-94-010-0464-0_225
Publisher Name: Springer, Dordrecht
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