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 ACTCACTCAACCTGGGTGTGATGTG ATCACAACCTCCTTGAGTGAGCGA GGTGACTCACTCAACCTGGGTGTGATGTGTTTGCTGTACCATCACAACCTCCTTGAGTGAGCGACCGG 6 0 5' arm Tribolium_castaneum mirbase mir-67 1e-27 tca-mir-307 4e-33 -31.1 (((..(((((((((...((.(((((((.((.......))))))))).))...)))))))))..))).. (-31.10)