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 TGAGGTAGTAGGTTGTATAGT TATACAATGTGCTAGCTTTCT TCTGGCAAATTGAGGTAGTAGGTTGTATAGTAGTAATTACACATCATACTATACAATGTGCTAGCTTTCTTTGCTTGA 3 0 5' arm Drosophila_simulans mirbase let-7 5e-24 der-let-7 5e-39 -30.44 ((.((((((..(((.(((((.(((((((((((..............))))))))))).))))).)))..)))))).)) (-30.44)