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 AGACGCGTCCACGCCCAATCTC GGTTGGGCCATAACGCGTCTGC GCCTAGCTCTAGGTTGGGCCATAACGCGTCTGCACCCCACTCAACGTTGGGCCAAGACGCGTCCACGCCCAATCTCCTGTTGGGT 5 0 3' arm Populus_trichocarpa pmrd 100 100 -43.5 (((((((...(((((((((....((((((((...(((.((.....)).)))...))))))))....)))))))))...))))))) (-43.50)