4E1RCat was used to inhibit new protein synthesis in transformed primary chicken embryo fibroblasts.[1]
Biochem/physiol Actions
4E1RCat ilnhibits the eIF4F translation initiation complex by binding to IF4E b and inhibiting the interaction between IF4E:eIF4G (IC50 = 3.2 μM). In in vitro translation experiments using MDA-MB-231 cells, 4E1RCat dose dependently inhibited cap-dependent translation, led to a decrease in polysome and 80S ribosomal subunits and reduced levels of the eIF4F-dependant proteins Mcl-1 and c-Myc.
4E1RCat is an inhibitor of translation initiation complex eIF4F
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