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- W2095032938 abstract "Cycloheximide is a natural product that cell biologists have used for decades as a tool to arrest protein synthesis in eukaryotes. Biochemical data now refine our mechanistic view of how cycloheximide and structurally related analogs inhibit translational elongation. Although the protein synthesis inhibitor cycloheximide (CHX) has been known for decades, its precise mechanism of action remains incompletely understood. The glutarimide portion of CHX is seen in a family of structurally related natural products including migrastatin, isomigrastatin and lactimidomycin (LTM). We found that LTM, isomigrastatin and analogs have a potent antiproliferative effect on tumor cell lines and selectively inhibit translation. A systematic comparative study of the effects of CHX and LTM on protein synthesis revealed both similarities and differences between the two inhibitors. Both LTM and CHX were found to block the translocation step in elongation. Footprinting experiments revealed protection of a single cytidine nucleotide (C3993) in the E-site of the 60S ribosomal subunit, thus defining a common binding pocket for the two inhibitors in the ribosome. These results shed new light on the molecular mechanism of inhibition of translation elongation by both CHX and LTM." @default.
- W2095032938 created "2016-06-24" @default.
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- W2095032938 date "2010-01-31" @default.
- W2095032938 modified "2023-10-18" @default.
- W2095032938 title "Inhibition of eukaryotic translation elongation by cycloheximide and lactimidomycin" @default.
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- W2095032938 doi "https://doi.org/10.1038/nchembio.304" @default.
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