proteasomes is breaking down protein molecule

destruction protein peptide enzyme barrel molecule machinery organic biochemistry science tube three dimensional motion animation deterioration molecular structure biological cell amino acid healthcare medicine built moving activity breaking death organelle animated video medical condition cut particle eukaryote broken proteolysis system regulatory particles cellular stress complex covalent cylindrical ligase response proteosome ubiquitin proteasome protease pathways cap regulation machine active site degradation proteosome proteolysis ubiquitin proteasome system protease regulation degradation destruction protein chamber peptides pathways peptide particles close enzyme barrel 3d degrade molecular structure molecule apoptosis enzymes break cap cell stress complex covalent site acids cylindrical eukaryotic isolated ligase machine medical machinery organic biochemistry response science rendering tube health