PSMB4 GI:22538467 proteasome beta 4 subunit 1 meaflgsrsg lwaggpapgq fyripstpds fmdpasalyr gpitrtqnpm 50 51 vtgtsvlgvk feggvviaad mlgsygslar frnisrimrv nnstmlgasg 100 101 dyadfqylkq vlgqmvidee llgdghsysp raihswltra mysrrskmnp 150 151 lwntmviggy adgesflgyv dmlgvayeap slatgygayl aqpllrevle 200 201 kqpvlsqtea rdlvercmrv lyyrdarsyn rfqiatvtek gveiegplst 250 251 etnwdiahmi sgfe