8q6n A 46 2.63 RF03054 0002060 137716 ggaguagaagcguucagcggccgaaaggccgcccggaaauugcucc <<<<<.......<<<.<<<<<<....>>>>>>...>>>...>>>>> ((((((....[.(((.((((((....))))))..])))..)))))) Xanthin riboswitch in complex with oxypurinol; Xanthin riboswitch NMT-46 (46-MER)