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 ACAATGAAATTAACCTTCTC ATAGGTTGAATTCATCGT ACAATGAAATTAACCTTCTCTGTGACGTCAGGATAGGTTGAATTCATCGT 4 0 5' arm Ciona_intestinalis mirbase 100 cin-mir-4015-2 2e-22 -16.2 ((.(((((.(((((((..((((......))))..))))))).))))).)) (-16.20)