Purity ~90% (SDS-PAGE). Catalyzes the GTP-dependent ribosomal translocation step during translation elongation. During this step, the ribosome changes from the pre-translocational (PRE) to the post-translocational (POST) state as the newly formed A-site-bound peptidyl-tRNA and P-site-bound deacylated tRNA move to the P and E sites, respectively. Catalyzes the coordinated movement of the two tRNA molecules, the mRNA and conformational changes in the ribosome. Source: Recombinant protein corresponding to aa2-858 from human EEF2, fused to His-Tag at N-terminal, expressed in E. coli. Molecular Weight: ~99.2kD AA