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 TGAACCGAACCGAACCGAAA TCAGTTCGGTCCGGTTTTGG TGAGCATTTTCAGTTCGGTCCGGTTTTGGACCAAAATAAACAACCAAACCGTTTTTTATTTTATTTTTTGAACCGAACCGAACCGAAAACCGGTTCA 3 0 3' arm Populus_trichocarpa pmrd 100 100 -32.5 .((((.(((((.(((((((.((((((..((..((((((((.(((......))).))))))))...))..)))))).))))))).)))))...)))). (-32.50)