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 GTTTTTTTGCATATCCTGCA CAGAGTACGCAAAAAATCAA CACGGCAAAAGTTTTTTTGCATATCCTGCACAGTTTCAGTTCTCGCAGAGTACGCAAAAAATCAATTTTGACGTGAG 6 0 5' arm Bombyx_mori mirbase mir-2778 5e-24 bmo-mir-2778a-1 3e-25 -23 ((((.(((((..((((((((.((..((((..((........)).))))..)).))))))))....))))).)))).. (-23.00)