Add time:08/22/2019         Source:sciencedirect.com

Protein synthesis was assayed in liver and kidney of mice treated with bolesatine, a toxic glycoprotein from the mushroom Boletus satanas (Lenz) which was previously shown to be an inhibitor of protein synthesis by cell-free systems in vitro and by cultured cell-lines. Protein synthesis in vivo (Swiss mice) is inhibited in a dose-dependent manner in liver and kidney. The mechanism of action does not appear to be due to RNA-N-glycosidase activity of bolesatine or a RNAase activity of this toxin on the ribosomal RNAs. Ribosomes do not appear to be damaged by pretreatment with bolesatine as judged by a poly(U) translation system. Thus bolesatine cannot be included in the group of protein synthesis inhibitors of plant origin known as ribosome-inactivating proteins (RIPs).

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