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 AGGAACTTCCCAAGGAACAG GTCCCCGGGCATTCCGA AGGAACTTCCCAAGGAACAGGCTAACCTTGCAGCCTGTCCCCGGGCATTCCGA 5 2 5' arm Ciona_intestinalis mirbase 100 cin-mir-4001i 3e-24 -22.4 .((((...(((..(((.((((((........)))))))))..)))..)))).. (-22.40)