这个基因编码一个重要的真核细胞翻译起始因子。这种蛋白是43S复合体（一个40S亚单位，eif2/gtp/met-trnai和eif3）与帽状RNA 5'端结合所必需的。
This gene encodes an essential eukaryotic translation initiation factor. The protein is required for the binding of the 43S complex (a 40S subunit, eIF2/GTP/Met-tRNAi and eIF3) to the 5' end of capped RNA.