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 TTTGTACTACACATAGGTACTGG AGTGTCTAGTCTAGTGCAAACA TACACGTTTGCAATTTTTGTACTACACATAGGTACTGGACAATTTTCAAAATATATCCAGTGTCTAGTCTAGTGCAAACATTGCTCGGTGTTGTTTGA 3 1 5' arm Caenorhabditis_elegans mirbase mir-239 1e-49 crm-mir-239a 0.0000000003 -32.69 .((((....(((((.(((((((((.((.(((..((((((................))))))..))))).))))))))).)))))...))))....... (-32.69)