Keyword: Cancer

Jim Uniacke

Protein synthesis involves the translation of ribonucleic acid information into proteins, the building blocks of life. The initial step of protein synthesis consists of the eukaryotic translation initiation factor 4E (eIF4E) binding to the 5� cap of mRNAs. However, many cellular stresses repress cap-dependent translation to conserve energy by sequestering eIF4E. This raises a fundamental question in biology as to how proteins are synthesized during periods of cellular stress and eIF4E inhibition. Research in our laboratory will build upon the discovery that cells switch to an alternative cap-binding protein, eIF4E2, to synthesize the bulk of their proteins during periods of oxygen scarcity (hypoxia).

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