The initiation of protein synthesis in eukaryotic cells is regulated by interactions between protein initiation factors and RNA molecules. The eukaryotic initiation complex is composed of three subunits, designated eIF2 alpha, eIF2 beta and eIF2 gamma (eukaryotic translation initiation factor 2 alpha, beta and gamma, respectively), all of which work in concert to form a ternary complex with GTP and tRNA in the early stages of protein synthesis. eIF2S3 (eukaryotic translation initiation factor 2, subunit 3), also known as eIF2G, is a 472 amino acid protein that belongs to the gamma subfamily of GTP-binding elongation factor proteins. Existing as a heterotrimer composed of an alpha, beta and gamma chain, eIF2S3 functions to bind ribosomal subunits and catalyze the subsequent formation of preinitiation complexes necessary for protein synthesis.
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Protein Aliases: eIF-2-gamma X; eIF-2gX; Eukaryotic translation initiation factor 2 subunit 3; Eukaryotic translation initiation factor 2 subunit gamma X; eukaryotic translation initiation factor 2, subunit 3 gamma, 52kDa; eukaryotic translation initiation factor 2G
Gene Aliases: eIF-2gA; EIF2; EIF2G; EIF2gamma; EIF2S3
UniProt ID: (Human) P41091
Entrez Gene ID: (Human) 1968