protein function nonhuman 466 priority journal 451 controlled study 410 article 409 Animals 366 protein expression 324 human 321 Humans 292 unclassified drug 283 metabolism 193 animal cell 187 signal transduction 160 mouse 157 human cell 139 animal 138 Mice 134 animal experiment 128 protein analysis 124 Article 116 genetics 109 protein protein interaction 109 protein localization 106 Female 105 female 102 animal tissue 97 male 95 Signal Transduction 93 protein binding 87 enzyme activity 85