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 AGTCAGGATTACGGTTAGTTTT AACAACCGGTAACCCTGTCCG AGTCAGGATTACGGTTAGTTTTTAAACTAAAACAACCGGTAACCCTGTCCG 3 2 5' arm Ciona_intestinalis mirbase 100 cin-mir-4064 4e-23 -16.1 .(.((((.((((((((.(((((......))))))))).)))).)))).).. (-16.10)