This latest deep dive explores the final, high-speed stages of protein synthesis and the sophisticated "quality control" and "shipping" protocols that occur after a polypeptide chain is formed. We examine the rapid-fire elongation cycle, the energetic "tax" the cell pays for translation, and the complex post-translational modifications that transform a raw string of amino acids into a functional enzyme, hormone, or structural component.

Topic Outline

• The Elongation Cycle: Rapid Assembly

◦ An analysis of the 80S ribosome’s three functional sites: the A (entry), P (growing chain), and E (exit) sites.

◦ The role of soluble factors eEF1A in bringing aminoacyl-tRNA to ...