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 TATGTGGAAGATATTTTAGAAT TCTGGACTTCCATATATT AGTAGAAGTATGTGGAAGATATTTTAGAATTGTTTGGGTCATATTTAGCATTTCTGGACTTCCATATATTACTTGA 1 4 5' arm Branchiostoma_floridae mirbase 100 100 -21.1 ...((.((((((((((((....(((((((.((((..(......)..)))).))))))))))))))))))).))... (-21.10)