The next aminoacyl-tRNA binds to the exposed codon in the A site of the ribosome. A peptide bond forms between the two adjacent amino acids, and the linked amino acids attach to the tRNA in the A site, forming a peptidyl-tRNA. The translocation then occurs when the ribosome shifts a codon to the right and the peptidyl-tRNA moves from the A site to the P site. The unloaded tRNA moves from the P site to the E site. When the translocation is complete, the unloaded tRNA is released from the site E and the ribosome is ready for another round of elongation (Burrell, H,