>sp|A0LU50|PSB_ACIC1 Proteasome subunit beta OS=Acidothermus cellulolyticus GN=prcB MTTSGGLTGPGAFGRLPQPFHQPGITSFVEFLALQAPDLLPGRLQMPAGGQPPEVPHGTT IVAVAYQGGVVMAGDRRATMGNVIAQRDIEKVFQTDEHSCVGIAGSAGIALEVVRLFQVE LEHYEKLQGTTLSLEGKANRLAMMIRANLPMALQGLAVVPLFAGYDLFADDPQRAGRIFS FDVTGGRYEEHSFHAVGSGSTFARGALKKLFRDDFDEPHAVRTCIEALYDAADDDSATGG PDLTRRIYPVVAVVDANGFRRLADDTVGGVVEQVIAARMANPGGPVAVLP