Structural work on the translation machinery has recently undergone ra
pid progress. It is now known that six out of nine ribosomal proteins
have an RNA-binding fold, and two domains of elongation factors Tu and
G have very similar folds. in addition, the complex of EF-Tu with a G
TP analogue and Phe-tRNA(Phe) has a structure that overlaps exceedingl
y well with that of EF-G GDP. These findings obviously have functional
implications.