mature_miRNA miRNA* pre-miRNA EST_contig mismatches bulges arm species source_database RFAM_best_hit RFAM_lowest_evalue miRBase_best_hit miRBase_lowest_evalue folding_energy secondary_structure TCGGACCAGGCTTCATTCCCC GGAATGGTGTCTGATTCGAGA GGGGAATGGTGTCTGATTCGAGACCATTCGTCACAAGTAAACAGTAGCCTTGAGAATGATCTCGGACCAGGCTTCATTCCCC 2 0 3' arm Medicago_truncatula pmrd mir-166 4e-40 mtr-MIR166h 2e-41 -38.7 (((((((((.(((((.(((((((.(((((....((((...........)))).))))).))))))).))))).))))))))) (-38.70)