>sp|Q9YES4|PSB1_AERPE Proteasome subunit beta 1 OS=Aeropyrum pernix (strain ATCC 700893 / DSM 11879 / JCM 9820 / NBRC 100138 / K1) OX=272557 GN=psmB1 PE=3 SV=2 MSFAGATALGIRVEDGVVLAADKRMSYGGFILSRNFKKIFVINDRIGIAFAGLYGDMGGL VRIVEGQMRLASLETGKPATVRNVAKFLSSLLYSYKFFPFNVEAIVGGIDPGGEPKLYVL DPLGSIIEEDYVAAGTGATTAFGLLEHVYKRGMSLEEAKKAAVEALRASMARDAGTGDGI DVLVLPVSGKPSLETIKFRLVEG