>6TK9_1|Chains A, B, C, D, E, F|Purine nucleoside phosphorylase|Thermus thermophilus (274) ELYDKIQEAVAYVRSKTDFVPEVGLVLGSGLGPLADEVEKVAEIPYGEIPHFPVSTAPGHAGRLVLGRLEGKPVLVYKGRVHYYEGYSAEEVVFPVRVGFFLGARTFLLTSAAGGLNPRFRAGGIMLHLDYINFAGANPLRGPNDERLGPRFPVMFEAYDPELIELARKVARRQDLHLFEGVYAWFMGPSFASRAELRLLRELGADAIGMSTVPEVIALRHLGARVLGLSTITDMAVPEREHHATEEEVLRVAAETGPVFRRYVRGILAEL