Change in pH-dependent membrane insertion characteristics of trichosanthin caused by deletion of its last seven C-terminal amino acid residues.

Abstract excerpt

Trichosanthin (TCS) is a type I ribosome-inactivating protein (RIP) that can selectively kill some types of cells at low concentration (0.1-1 nM). The pH-dependent membrane insertion ability of TCS makes it possible that the internalized toxin avoids degradation in lysosomes and further undergoes transportation into the cytosol by some still unidentified mechanism. Here, we show that deletion of C-terminal...

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