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 CTAAGTACTAGTGCCGCGGGAG CCTGCAGCTCAAGTGCTTATCA CTAAGTACTAGTGCCGCGGGAGTGATATCCGTTTTTTGTATCTCCTGCAGCTCAAGTGCTTATCA 4 0 5' arm Acyrthosiphon_pisum mirbase mir-252 4e-30 ame-mir-252 0.000003 -24.4 .((((((((.(.((.(((((((..(((.........)))..))))))).)).).))))))))... (-24.40)