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 GTTGGTTAGTTGTGCATTTTC AAATGCATTTATCTGGCCAAGAA AAGCATCAAAAATGTTGGTTAGTTGTGCATTTTCATTAAATATTATGTAAATGCATTTATCTGGCCAAGAAATAGTTGCTT 4 2 5' arm Schmidtea_mediterranea mirbase 100 sme-mir-277d 9e-41 -23.72 (((((.......(.((((((((..((((((((.(((........))).))))))))....)))))))).)......))))) (-23.72)