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 pmrd MIR164 4e-34 ptc-MIR164a 4e-43 -37.6 ...(((.((.((((((((.(((((.(((((((...........((((....))))))))))).))))).)))))))).)).))). (-37.60)