A multisubunit guanine nucleotide exchange factor which catalyzes the exchange of GDP bound to initiation factor eIF2 for GTP, generating active eIF2-GTP. In humans, it is composed of five subunits, alpha, beta, delta, gamma and epsilon. (Gene Ontology, GO_0005851)
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5 proteins localized to the eukaryotic translation initiation factor 2b complex cellular component from the COMPARTMENTS Curated Protein Localization Evidence Scores dataset.