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 GTCTGTTTTACCAAGGTCC AACTTGCATGAACAGGCTG TGGAACTTGCATGAACAGGCTGTTTATATTCAGTCTGTTTTACCAAGGTCC 4 0 3' arm Ciona_intestinalis mirbase 100 cin-mir-4001b-2 4e-23 -20.4 .(((.((((...((((((((((........))))))))))...)))).))) (-20.40)