This protein promotes the GTP-dependent binding of aminoacyl-tRNA to the A-site of ribosomes during protein biosynthesis. Phosphatidylethanolamine (PE) is a direct precursor of the ethanolamine-phosphoglycerol (EPG) moiety. The Kennedy pathway is the major route for phosphatidylethanolamine (PE) synthesis, as shown by reduced levels after using RNAi against the first two enzymes of the Kennedy pathway. Belongs to the TRAFAC class translation factor GTPase superfamily. Classic translation factor GTPase family. EF-Tu/EF-1A subfamily.