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 CTTGGAAATGCATGTGCTTT CAGCACATGCGCATTTGAA CTTGGAAATGCATGTGCTTTGCATGACGATTTTTAATGACAGCAACAGCACATGCGCATTTGAA 5 1 5' arm Ciona_intestinalis mirbase 100 100 -20.7 .(..((..((((((((((((((.((.((........)).)))))).))))))))))..))..). (-20.70)