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 TGATTGAGCCGCGCCAATATC TAGGAGGGTGCGGGTGCCCC GGATAGGAGGGTGCGGGTGCCCCGGCGGTGAGGGGAGCCGGTGATTGAGCCGCGCCAATATC 5 5 3' arm Zea_mays pmrd MIR171_1 0.0007 bdi-MIR171a 0.000003 -25.3 .((((....(((((((.(.(.(((((..........))))).)....).)))))))..)))) (-25.30)