Characterization of a Novel Proteinous Toxin from Sea Anemone Actineria villosa.
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概要
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The sea anemone Actineria villosa expresses a lethal protein toxin. We isolated a novel 120-kDa protein, Avt120, from partially purified toxin and found it to possess extremely strong lethal activity. The 3,453-bp Avt120 gene translates to a 995-amino acid protein. The 50% lethal dose (LD(50)) of purified Avt120 in mice was 85.17 ng. Among several tested cell lines, Colo205 cells were most sensitive to Avt120: 50% of them were damaged by 38.4 ng/mL Avt120. Avt120 exerted ATP degradation activity (10 μmol ATP h(-1) mg(-1)), which was strongly inhibited by ganglioside GM1 to decrease the cytotoxicity of Avt120.
- 2011-07-17
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