>sp|O50110|PSB2_PYRHO Proteasome subunit beta 2 OS=Pyrococcus horikoshii GN=psmB2 MLQLTEKFKGTTTVGIVCKDGVVLAADRRASLGNIIYARNVTKIHKIDEHLAIAGAGDVG DILNLVRLLRAEAKLYYSQSGKRMSVKALATLLANIMNGAKYFPYLAWFLVGGYDEKPKL YSVDMVGGITEDKYATAGSGMEFAYSILDSEYKDNLTLEEGIKLAVKAINTAIKRDVFSG DGILVVTITKEGYKELSDSELEATLKQ