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 CAGCCAAGGATGACTTGCCGA GGCAGGTTTTCCTTGGCTACA AAGTTTGATGCAGCCAAGGATGACTTGCCGACGACTCAATTTTTGCTTCCATATGGTAGAAGAGATGAATAGGTTGGCAGGTTTTCCTTGGCTACATTTTCC 2 0 5' arm Populus_trichocarpa pmrd MIR169_2 6e-52 ptc-MIR169c 4e-53 -43 ......((((.(((((((((.(((((((((((.(.(((.(((((.((.((....)).))))))).))).)..))))))))))).))))))))).)))).... (-43.00)