inactivation experiments and studies on the atp effect led us to conclude that this atpase activity was an essential requirement for the functional role of ef-3 and therefore , in addition to the gtpases of ef-1 alpha and ef-2 , the third nucleoside triphosphate hydrolyzing step by the atpase of ef-3 was necessary for the yeast peptide elongation cycle .
C0018296
gtpases
C0059037
ef-2