This protein promotes the GTP-dependent binding of aminoacyl-tRNA to the A-site of ribosomes during protein biosynthesis. Monomer. Belongs to the TRAFAC class translation factor GTPase superfamily. Classic translation factor GTPase family. EF-Tu/EF-1A subfamily. The equivalent of tuf1 in the CIRAD genome (PubMed:16547041, AC Q5FCW3) is annotated as a frameshift version requiring 2 frameshifts to produce full-length protein. Extended N-terminus.