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 CAGAGTACGCAAAAAAACAATT GTTTTTTTGTATATCCTGCA ACTCACGGCAAAAGTTTTTTTGTATATCCTGCACAGTTTCAGTTCTCGCAGAGTACGCAAAAAAACAATTTTGACGTGAG 4 2 3' arm Bombyx_mori mirbase mir-2778 0.000000000001 bmo-mir-2778a-1 0.00000000000006 -28.3 .((((((.((((((((((((((..((..((((..((........)).))))..))..)))))))))..))))).)))))) (-28.30)