>tr|A0A7L4PEK2|A0A7L4PEK2_9CREN Proteasome subunit beta OS=Pyrobaculum arsenaticum GN=psmB MGEEVQIGATAVGIKAKDGVVLAAEKRVSYGFYTLSSAGRKVFVIDDKLAIASAGIIADM QSLARIVKINAKAYELETRKKPTVRSMAKLLSVIMFSRRYMPFFAEVLVGGVDEEGSHLI VMDPLGSLIEDNYAALGTGAKLAISVLDTGYREDITLQDAKKLAVKALKAAIERDPVSGG GIDLVLIDQTGAKEEEVKVQLLI