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 GAATCCTGATGATGCTGCA CAGTAGGAGGGTATTC GCAGTAGGAGGGTATTCGGATACAGAGTGGTAGTGGTAGAGAATCCTGATGATGCTGCA 4 3 3' arm Nicotiana_tabacum micropc mir-172 0.0007 ptc-MIR172i 0.00001 -16.2 ((((((..(((((.(((...(((.........)))...))).))))).....)))))). (-16.20)