protein function nonhuman 502 priority journal 488 article 456 controlled study 448 Animals 398 protein expression 354 human 340 Humans 314 unclassified drug 310 animal cell 206 metabolism 206 mouse 172 signal transduction 170 human cell 154 Mice 146 animal 146 animal experiment 138 protein analysis 136 protein protein interaction 120 genetics 118 Article 116 protein localization 116 Female 114 female 108 animal tissue 104 Signal Transduction 102 male 102 protein binding 94 enzyme activity 92