PSMB9 GI:4506205 proteasome beta 9 subunit isoform 1 proprotein 1 mlragaptgd lpragevhtg ttimavefdg gvvmgsdsrv sageavvnrv 50 51 fdklsplher iycalsgsaa daqavadmaa yqlelhgiel eepplvlaaa 100 101 nvvrnisyky redlsahlmv agwdqreggq vygtlggmlt rqpfaiggsg 150 151 stfiygyvda aykpgmspee crrfttdaia lamsrdgssg gviylvtita 200 201 agvdhrvilg nelpkfyde