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 GTCTTCAAAGTGGCAGTGACATG TTCATATCACAGCCAGCTTTGAGGAGCG CTTCAACTGTCTTCAAAGTGGCAGTGACATGTTGTCAACAATATTCATATCACAGCCAGCTTTGAGGAGCGTTGCGG 3 5 5' arm Drosophila_melanogaster mirbase mir-2 2e-32 dme-mir-2b-1 2e-38 -27.9 ((.((((..(((((((((((((.((((.((((((....)))))).....)))).)))).)))))))))..)))).)) (-27.90)