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 GCTGCCTATCCAGAAATCGGCAGC TGCCGATCCAGAAATCGGCAGCGA TGTCGCTGCCTATCCAGAAATCGGCAGCCGCAAACTATGTCGCTGCTGATATAGAAATCAGCAACAAAGAAGTGTGCCGCTGCCGATCCAGAAATCGGCAGCGATA 9 0 5' arm Populus_trichocarpa pmrd 100 100 -49.11 ((((((((((.........(((((((((.(((.(((.......(((((((......))))))).......))).))).))))))))).........)))))))))) (-49.11)