comparison has been made of the proton magnetic resonance ( pmr ) spectra of translating ribosomes in the pre-translocation and post-translocation states as well as of the complexes of translating ribosomes with elongation factors tu ( ef-tu ) or g ( ef-g ) in the presence of the uncleavable analogue of gtp -- guanylyl-imidodiphosphate ( gmp-pnp ) .
C0018353
gtp
C0018366
gmp-pnp