Effect of ribosome-inactivating proteins on ribosomes from Tetrahymena pyriformis and Acanthamoeba castellanii |
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Authors: | P Cenini M G Battelli A Bolognesi F Stirpe C L Villemez |
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Affiliation: | Dipartimento di Patologia Sperimentale, Università di Bologna, Italy. |
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Abstract: | The effect of ribosome-inactivating proteins type 1 (single-chain) and type 2 (two-chain, toxins) on polyphenylalanine polymerization by Tetrahymena pyriformis and Acanthamoeba castellanii ribosomes has been studied. The reaction catalysed by tetrahymena ribosomes was inhibited by two ribosome-inactivating proteins type 1 (dianthin 32 and, less effectively, momordin) whereas the reaction catalysed by amoeba ribosomes was inhibited, in a decreasing order of activity, by three ribosome-inactivating proteins type 1 (dianthin 32, saporin 6 and bryodin) and by two toxins (abrin and volkensin). |
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