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 ATCTCGTCAACCTTCGTCAGATG TCAGGAGTGAAACAAAAGTGGCGGGATG TTGATCTCGTCAACCTTCGTCAGATGTCTGATACACTGCTCTGACTTTTCGGAAGCGAGAAGTGTGATGACGTCAGGAGTGAAACAAAAGTGGCGGGATG 4 6 5' arm Branchiostoma_floridae mirbase 100 100 -32.1 ...(((((((((...((((((.((((((...(((((((((((((....)))).)))....))))))..))))))..)).)))).......))))))))). (-32.10)