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The p46 subunit of eukaryotic initiation factor (eIF)-4F exchanges with eIF-4A
Journal of Biological Chemistry
The p46 subunit of eukaryotic initiation factor (eIF)-4F purified from rabbit reticulocyte lysate has previously been found to be composed of eIF-4AI and eIF-4AII in a 4:1 ratio, respectively, whereas the free form of rabbit eIF-4A is composed solely of eIF-4AI. Using sucrose gradient centrifugation and an m7GTP-Sepharose 4B assay, it was shown that eIF-4A exchanges with the p46 subunit of eIF-4F. Incubation of [14C]eIF-4A and eIF-4F resulted in the incorporation of [14C] eIF-4A into the eIF-4Fpmid:8449919 fatcat:fual2rgeybfmxks36ap5f2cwyi