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 TGACAGAAGAGAGTGAGCAC GCTCACATCTCTTCTGTCAGC AAAGAAAGACTGACAGAAGAGAGTGAGCACACACGAAAGTATATGGTATGAAGGCATTCCATTGCAGGGTGTGTGCTCACATCTCTTCTGTCAGCTTCCAC 0 1 5' arm Populus_trichocarpa mirbase mir-156 9e-42 ptc-MIR156f 3e-32 -54.3 ...(.(((.(((((((((((((((((((((((((....(((.((((.(((....))).)))))))...)))))))))))).)))))))))))))))).).. (-54.30)