protein degradation priority journal 128 nonhuman 114 article 110 controlled study 92 Animals 72 human 70 unclassified drug 68 Humans 62 animal cell 44 metabolism 42 protein expression 42 human cell 40 Article 36 enzyme activity 32 protein function 32 signal transduction 32 protein localization 28 Mice 26 mouse 26 proteasome 26 Protein Binding 24 animal tissue 24 protein protein interaction 24 Animalia 22 Molecular Sequence Data 22 Signal Transduction 22 animal 22 protein analysis 22 Male 20