This video tells us about the different pathways by which the proteins undergo denaturation. Damaged proteins are recognized and rapidly degraded within cells, thereby eliminating the consequences of mistakes made during protein synthesis. In eukaryotic cells, two major pathways—the ubiquitin-proteasome pathway and lysosomal proteolysis—mediate protein degradation. TIMELINE: 0:01 Introduction 0:20 Protein degradation 0:38 Ubiquitin 0:50 Proteosomes pathways 0:56 Lysosomal proteolysis 1:09 End