PSMB9 GI:23110932 proteasome beta 9 subunit isoform 2 proprotein 1 mlragevhtg ttimavefdg gvvmgsdsrv sageavvnrv fdklsplher 50 51 iycalsgsaa daqavadmaa yqlelhgiel eepplvlaaa nvvrnisyky 100 101 redlsahlmv agwdqreggq vygtlggmlt rqpfaiggsg stfiygyvda 150 151 aykpgmspee crrfttdaia lamsrdgssg gviylvtita agvdhrvilg 200 201 nelpkfyde