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 CAGAGTAGGCAAAAAAACAATT GTTTTTTTGCATATCCTGCA CACGGCAAAAGTTTTTTTGCATATCCTGCACAGTTTCAGTTCTCGCAGAGTAGGCAAAAAAACAATTTTGACGTGAG 3 2 3' arm Bombyx_mori mirbase mir-2778 0.00000000002 bmo-mir-2778a-1 0.000000000001 -25.4 ((((.(((((((((((((((.((..((((..((........)).))))..)).))))))))))..))))).)))).. (-25.40)