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 TACTGCATTAGGAACTGATTGG AATCATATCCTTGTGCATTATATT ATAGTTGTCGTGATTTACTGCATTAGGAACTGATTGGTCCAAAAACCTCCAATCATATCCTTGTGCATTATATTTCGGGAACGACTCACTTCAAAGTTAAACA 4 2 5' arm Ciona_intestinalis mirbase mir-217 0.00009 csa-mir-217 0.000005 -27.8 ..(((((((.(((..((.(((((.((((..(((((((...........)))))))..)))).)))))...))..))).).))))))................. (-27.80)