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 TCATCATCATCATCATCCTCT ACACGATGATCTTGATTATGATA TGATAGACACGATGATCTTGATTATGATACAGTTTTTACATAGCTGGTGCTTTTCGCCATGGATTCTCTTCTCTTGTACCTTCCTCCTCTCTTTTCCATAACCACAACGCCTTCAGTTAACAGCTTGACCTCTGGCAAAAGCCACTGCTCCTTCATGGAAATGTGGTGGCTTAGCATCGAAATCTTTCGGCGGCACCTTACATTCGACATCATCATCATCATCATCATCCTCTGTT GAATCGATGGCATTTATTGATAGACACGATGATCTTGATTATGATACAGTTTTTACATAGCTGGTGCTTTTCGCCATGGATTCTCTTCTCTTGTACCTTCCTCCTCTCTTTTCCATAACCACAACGCCTTCAGTTAACAGCTTGACCTCTGGCAAAAGCCACTGCTCCTTCATGGAAATGTGGTGGCTTAGCATCGAAATCTTTCGGCGGCACCTTACATTCGACATCATCATCATCATCATCATCCTCTGTTTCCCATAGGAAACTAGCATATGCTGCATGAACATGGCAATCTTCTGGGGTAGCTTGTACTCCACGCTCGAAGAAGCTCGAAGCTCTATCTTGGTCTTGATGCAATTCCCATACTAACTTTCCATATTGTGACAGTATTTCACCATCTTTAGGATCTGCTAGGAAGGCTCTGGAGTAATACTCCTCGGCTCCCTGAAGGTCTCGCTTTGTCTGATACAAAAATTGAGCATAGTTCCTCTCTATCAAAGGGTTGCCGGGATTTTCCTGCACCATCTTCTTCATGGCCTCCCCCGTGCCATGCATGTCTCATTTCATTACCTCAAACTCATCACCACTACCACCTCCA 4 2 3' arm Populus_nigra mirnest 100 100 -47.9 .((((((...((((((..((((.(((((...(((...........(((((....((((..(((((.((..((.((((..........................)))).(((....(((((....)))))....)))..(((((((((((((.....)))...))))))))))))....)))))))...)))))))))........)))...))))).))))..)))))).)))))) (-47.9)