The function of EEF1B2 (eukaryotic translation elongation factor 1 beta 2, Ensembl gene identifier ENSG00000114942) is as follows. Catalytic subunit of the guanine nucleotide exchange factor (GEF) (eEF1B subcomplex) of the eukaryotic elongation factor 1 complex (eEF1) (By similarity). Stimulates the exchange of GDP for GTP on elongation factor 1A (eEF1A), probably by displacing GDP from the nucleotide binding pocket in eEF1A (By similarity). .