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 TATCACAGCCACTTTGATGTG TGTCAAAGCGGCGGTGAAATG GATAATCTCGATCCTGTCAAAGCGGCGGTGAAATGTCTCCTCCCTTTCATATCACAGCCACTTTGATGTGGTCGGTTTA 4 0 3' arm Bombyx_mori mirbase mir-2 1e-30 api-mir-13a 0.000004 -27.5 .......((((((.((((((((.(((.((((.(((............))).)))).))).)))))))).)))))).... (-27.50)