Ammosamides A and B target myosin

Chambers C. Hughes, John B. MacMillan, Susana P. Gaudêncio, William Fenical, James J. La Clair

Research output: Contribution to journalArticle

72 Scopus citations


The protein target of the ammosamides, cytotoxic natural products from a marine-derived actinomycete, has been elucidated. An immunoaffinity fluorescent tag was used to construct a fluorescent molecular probe (see structure). First, uptake and localization of the probe in cells was visualized with fluorescence microscopy. The probe was then used to co-immunoprecipitate proteins that bound to the ammosamide core. Myosin was thus identified as a target. (Figure Presented).

Original languageEnglish (US)
Pages (from-to)728-732
Number of pages5
JournalAngewandte Chemie - International Edition
Issue number4
StatePublished - Jan 12 2009


  • Actinomycetes
  • Cell cycle inhibitors
  • Mitosis
  • Myosin
  • Natural products

ASJC Scopus subject areas

  • Catalysis
  • Chemistry(all)

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    Hughes, C. C., MacMillan, J. B., Gaudêncio, S. P., Fenical, W., & La Clair, J. J. (2009). Ammosamides A and B target myosin. Angewandte Chemie - International Edition, 48(4), 728-732.