>sp|Q8PTU1|PSA_METMA Proteasome subunit alpha OS=Methanosarcina mazei GN=psmA MQMAPQMGYDRAITVFSPDGRLFQVEYAREAVKRGTTAVGIKAADGVVLLVDKRITSRLV EAESIEKIFQIDDHIGAATSGLVADARSLVDRARVEAQVNRVSYDELIGVEVISKKICDH KQTYTQYGGVRPYGTALLIAGVDDNKPRLFETDPSGALLEYKATAIGAGRNAVVEVFEAD YREDMNIDAAILLGMDALYKAAEGKFDAGTLEVGVVSLEDKKFRKLGPEEVENYVHQILE KHKGNENKE