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 TATTGCTTGAGAATACACGTAG ACAGGTATTCTCGAGTGAATAAT ATGATTACAGGTATTCTCGAGTGAATAATACAGAAAAGCCTGATGTTATTGCTTGAGAATACACGTAGTATA 2 1 3' arm Strongylocentrotus_purpuratus mirbase mir-137 3e-34 sko-mir-137 0.0000000002 -27.7 ...(((((..((((((((((((.((((((((((......))).)))))))))))))))))))..)))))... (-27.70)