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 AAAGTGCAACTGTGTAAACC TTTACATTGCATGCACTTA AAAGTGCAACTGTGTAAACCTGATTATACTGCAGGTTTACATTGCATGCACTTA 4 1 5' arm Ciona_intestinalis mirbase 100 cin-mir-4029 7e-25 -23.3 .(((((((...(((((((((((.........)))))))))))....))))))). (-23.30)