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 AGTTGAGCCAAGAACGACCTGGC CAAGTCATTCTTGGCTCGATCTCT GAAGAGCAAAGTTGAGCCAAGAACGACCTGGCGGAATACTCATTCTAGCATACATATTGCTCTATACGTAGCAATTGCTAGCCTGCCGACAAGTCATTCTTGGCTCGATCTCTACTCTTC 3 1 5' arm Populus_trichocarpa pmrd MIR169_2 2e-61 ptc-MIR169aa 3e-57 -45.9 ((((((...((((((((((((((.(((.((.(((......((..((((((.....((((((........))))))))))))..))))).)).))).)))))))))))).))...)))))) (-45.90)