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 TTCCACAGCTTTCTTGAACT TTCATGGAGAGCTTCGAAGC TTCATGGAGAGCTTCGAAGCTTCGAAATATATTTTTTGGCGTGTTTGTATGTGACCCTCTTTGTATTCTTCCACAGCTTTCTTGAACT 4 2 3' arm Populus_tremula_x_Populus_tremuloides micropc MIR396 0.000000005 tcc-MIR396b 0.000000000001 -17.9 ((((.((((((((..((((......((((((......((((..(....)..)).)).....))))))))))...)))))))))))).. (-17.90)