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 GTAGGAGTGAATTTTGATTTT ATTTAAAATTTATTCTTACAG GTAGGAGTGAATTTTGATTTTTTATATGTAAATTTAAAATTTATTCTTACAG 1 0 5' arm Caenorhabditis_elegans mirbase 100 100 -17.4 (((((((((((((((((.(((........))).))))))))))))))))).. (-17.40)