The effect of phallotoxins on the structure of F-actin in myosin-free ghost muscle fibres of rabbit
FEBS Letters(1984)
摘要
Using polarized UV fluorescent microscopy it has been shown that phallotoxins (phalloidin-sulfone, phalloidin-sulfoxide-B, phalloidin-sulfoxide-A and dithio-phalloidin) cause an increase in tryptophan fluorescence anisotropy of F-actin myofilaments in myosin-free ghost muscle fibres of rabbit. The results obtained are considered to be evidence of conformational changes in F-actin, induced by phallotoxins. These changes are irreversible to a significant extent, which points to a high degree of actin binding to both toxic and nontoxic phallotoxins.
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关键词
F-Actin conformational change,Phallotoxin,Ghost fiber,Polarized U V microphotometry
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