This latest deep dive shifts focus from the assembly of proteins to their relentless, highly regulated breakdown. Protein degradation is a continuous, energy-spending process that occurs alongside synthesis to maintain cellular homeostasis. While it might seem counterintuitive to spend energy destroying what was just built, this system allows the body to selectively remove damaged proteins and recycle 75–80% of amino acids to synthesize new ones. We explore the specialized "shredders" and "recycling centers" of the cell, and how hormones like insulin and glucagon act as the master switches for these pathways.

Topic Outline

• The Nature of Degradation and Turnover

◦ Understanding degradation as a well-regulated, energy-intensive proce ...