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 CACATTCGGTCAATGTTC ATATTGACCGAATATGGA GAATATTGACCGAATATGGATGAAAAGTTGTTCTCTGTTTCCTTTCCTCCACATTCGGTCAATGTTC 1 0 3' arm Populus_nigra micropc MIR1444 2e-26 ptc-MIR1444a 1e-27 -27.5 (((((((((((((((.((((.((((.(..(........)..))))).)))).))))))))))))))) (-27.50)