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 CAAGATCATCCCCCATGCTGT TGTTCAGGGGGATGAGCTTGGA CATTGGGTCAACCATTCGAGACAAGATCATCCCCCATGCTGTGTCATGGTTTACCGGGGAGGCTGTTCAGGGGGATGAGCTTGGACTAGATGATGGTGACAAT GCTTGAGTTCTTCTTTGATACTAACCCTTATTTCAAGAACTCTGTTTTGACAAAAACATATCACATGATTGATGAAGATGAGCCCATTCTCGAGAAAGCAATAGGAACTGAGATCGAATGGTATCCAGGAAAATGCTTGACCCATAAGCTTCTTAAGAAGAAGCCCAAGAAAGGATCCAAGAATGCCAAGCCAGTTACCAAAACTGAAGATTGTGAAAGTTTTTTCAACTTCTTCAGCCCACCACAAGTTCCTGACGATGATGAAGACATAGATGAAGATACTGCTGAGGAATTGCAAAATCAGATGGAGCAAGATTATGACATTGGGTCAACCATTCGAGACAAGATCATCCCCCATGCTGTGTCATGGTTTACCGGGGAGGCTGTTCAGGGGGATGAGCTTGGACTAGATGATGGTGACAATGACGATGATGAAGATATTGATGAGGATGATGACGAGGAGGAAGATGAGGACGATGATGAAGATGAAGATGAGGATGATGAGGATGAGGATGAGGATGAAGGCAAGACCAAAAAGAAGCCATCTGCTGGAAACAAGAAAAGTGGAAGAACACAAGTTGGGGATGGTCANCAGGGTGAGCGGCCNCCANAATGCAAGCNGCAGTAAAGTTTTTGCCNCANCGTTTTTGTGAAGTCCTTATTGCNATGGTTGGAAAAGGGGAGTTTTTTTGAAGCTNTTATTGCATGCCTGGAAGGGA 4 1 5' arm Populus_tremula_x_Populus_alba mirnest 100 100 -37.9 ......((((.((((((.((.((((.(((((((((..((.((.((.(((....)))..)).)).))...))))))))).))))..)).))..))))))))... (-37.9)