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 TGGAGAAGCAGGGCACGTGCA CACGCGCTCTTCTTCTCCAAC GGTTCCTTGCTGGAGAAGCAGGGCACGTGCAAAATCCTGATGAAGTGCTTACACTTTGCACGCGCTCTTCTTCTCCAACACGGGC 2 0 5' arm Populus_trichocarpa mirbase MIR164 4e-34 ptc-MIR164d 0.0000000003 -37.6 ...(((.((.((((((((.(((((.(((((((...........((((....))))))))))).))))).)))))))).)).))). (-37.60)