This page discusses the importance of protein degradation alongside synthesis, highlighting the roles of lysosomes and proteasomes. Lysosomes degrade extracellular proteins from endocytosis, while pro...This page discusses the importance of protein degradation alongside synthesis, highlighting the roles of lysosomes and proteasomes. Lysosomes degrade extracellular proteins from endocytosis, while proteasomes target intracellular proteins using a ubiquitin tagging system. This degradation process recycles amino acids and aids in antigen processing for immune response, involving complexes that present antigens to T cells.