>tr|A6ZR51|A6ZR51_YEAS7 20S proteasome subunit beta3_sc OS=Saccharomyces cerevisiae GN=PUP3 MSDPSSINGGIVVAMTGKDCVAIACDLRLGSQSLGVSNKFEKIFHYGHVFLGITGLATDV TTLNEMFRYKTNLYKLKEERAIEPETFTQLVSSSLYERRFGPYFVGPVVAGINSKSGKPF IAGFDLIGCIDEAKDFIVSGTASDQLFGMCESLYEPNLEPEDLFETISQALLNAADRDAL SGWGAVVYIIKKDEVVKRYLKMRQD