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 AAGGGCGTTAAATGAAGACTTAG ACATCGTTTGAATGCTCGTCT CCACGGTGAAAAGGGCGTTAAATGAAGACTTAGGGCTTCGGGCATATCCAAGAAAAACAGGACATCGTTTGAATGCTCGTCTAATGGA 10 1 5' arm Bombyx_mori mirbase mir-2780 7e-39 bmo-mir-2780b-1 1e-37 -20.3 (((....((...(((((((((((((........(.(....).)...(((..........)))..))))))).)))))).))...))). (-20.30)