Final answer:
True, translocation is promoted by the elongation factor EF-G, also called translocase, which aids in the ribosomal movement along the mRNA after peptide bond formation and GTP hydrolysis.
Step-by-step explanation:
The process of translocation in protein synthesis involves the ribosome moving along the mRNA by a codon with the help of elongation factors and GTP hydrolysis. The elongation factor EF-G, also known as translocase, plays a critical role in this process. It facilitates the ribosomal movement that occurs after peptide bond formation, allowing the tRNA carrying the dipeptide to shift from the A-site to the P-site, while the deacylated tRNA is released into the cytosol. Another critical aspect of the elongation process is GTP hydrolysis, which is catalyzed by translocase, to provide the necessary energy for the ribosome's movement.