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 GTCCTTTCCAACAGGTTTC AACTTGCAAGAACGGGCCT TGAAACTTGCAAGAACGGGCCTTGTTCTAACAAGTCCTTTCCAACAGGTTTC 4 0 3' arm Ciona_intestinalis mirbase 100 cin-mir-4000d 1e-23 -16.9 .((((((((...(((.((((.((((....)))))))).)))...)))))))) (-16.90)