>sp|A9A788|PSB_METM6 Proteasome subunit beta OS=Methanococcus maripaludis GN=psmB MISNSEYHKEYMKGTTTVGLLCKDGVVLATDKRATMGNLIADKEAKKLYKIDDYIAMTIA GSVGDAQSLIRLISAEAKIYKMRTGNNMTPLSCTTLISNVLHGNRHYPLLTQLILGGYDL INGAKLFSLDPVGGINEESSFTATGSGSPTAYGVLEAEYRSDVTIDKGLLVAVKALSSAM QRDAYSGNGISLAHINKDGVNIYSDEEIEGFLKKINKKR