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 GGCGAGCCACGGCCTAGTGGGTTC ACCTACATAGGCTGATTGCGTGCCAG CAGGTAGACCTACATAGGCTGATTGCGTGCCAGTATTCACTCGGCGAGCCACGGCCTAGTGGGTTCTTTATAT 4 2 3' arm Branchiostoma_floridae mirbase 100 100 -29.3 ......(((((((.(((((((...((.(((((((....))).)))).))..))))))))))))))........ (-29.30)