Eukaryotic translation initiation factor 2 subunit 3 (eIF2ó) is a protein that in humans is encoded by the EIF2S3 gene.
Eukaryotic translation initiation factor 2 (eIF2) functions in the early steps of protein synthesis by forming a ternary complex with GTP and initiator tRNA and binding to a 40S ribosomal subunit. eIF2 is composed of three subunits, alpha (ñ), beta (ò), and gamma (ó, this article), with the protein encoded by this gene representing the gamma subunit.