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 TAAGGTGCATCTAGTGCAGTTAG TACTGCCCTAAATGCCCCT TAAGGTGCATCTAGTGCAGTTAGTGAAGCAGCTTAGAATCTACTGCCCTAAATGCCCCT 7 0 5' arm Equus_caballus mirbase 100 mml-mir-18b 8e-28 -17.6 ..(((.((((.(((.(((((..((.(((...)))...))..))))).))).)))).))) (-17.60)