>4w90_C mol:na length:119 riboswitch a pseudo-dimeric RNAGCGCGCUUAAUCUGAAAUCAGAGCGGGGGACCCAUUGCACUCCGGGUUUUUCCCGUAGGGGUGAAUCCUUUUUAGGUAGGGCGAAAGCCCGAAUCCGUCAGCUAACCUCGUAAGCGCGC