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eIF4A goes beyond translation

A new study has revealed an unexpected role for eukaryotic translation initiation factor 4A (eIF4A) in suppressing Decapentaplegic (Dpp) signalling. On activation of Dpp signalling, eIF4A promotes degradation of the downstream signalling components Mad and Medea in a translation-independent manner.

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Figure 1: Schematic representation of Dpp signalling in Drosophila.

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Affolter, M., Pyrowolakis, G. eIF4A goes beyond translation. Nat Cell Biol 8, 1319–1321 (2006). https://doi.org/10.1038/ncb1206-1319

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