PSMB5 GI:195539356 proteasome beta 5 subunit isoform 2 1 maggaadcsf werllarqcr iyelrnkeri svaaasklla nmvyqykgmg 50 51 lsmgtmicgw dkrgpglyyv dsegnrisga tfsvgsgsvy aygvmdrgys 100 101 ydleveqayd larraiyqat yrdaysggav nlyhvredgw irvssdnvad 150 151 lhekysgstp