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 ATATATTATCAGATTTTCGGTC CCGAACATCTGATAATATACTA TAAATTACACGACCGAACATCTGATAATATACTATATGATATGATAATATATTATCAGATTTTCGGTCGCGTTATTTT 2 0 3' arm Bombyx_mori mirbase 100 100 -31.7 .((((.((.((((((((.(((((((((((((.(((........))).))))))))))))).)))))))).)).)))). (-31.70)