protein function nonhuman 251 priority journal 244 article 228 controlled study 224 Animals 199 protein expression 177 human 170 Humans 157 unclassified drug 155 animal cell 103 metabolism 103 mouse 86 signal transduction 85 human cell 77 Mice 73 animal 73 animal experiment 69 protein analysis 68 protein protein interaction 60 genetics 59 Article 58 protein localization 58 Female 57 female 54 animal tissue 52 Signal Transduction 51 male 51 protein binding 47 enzyme activity 46