Translation initiation factor eIF4E; mRNA cap binding protein and subunit of the mRNA cap-binding complex (eIF4F) along with eIF4A and eIF4G, that mediates cap-dependent translation; required with eIF4G for Ded1p-mediated stimulation of mRNA recruitment during 48S preinitiation complex (PIC) assembly; connects protein synthesis to metabolic gene regulation; protein abundance increases in response to DNA replication stress; human homolog EIF4E can complement cdc33 mutants