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 ACTGAAGCTGACGAGTTAACTGCCGG GGATTTTTTCCCCAGCCTCAAGAA AAAACTGAAGCTGACGAGTTAACTGCCGGGTACTTGTTCCCGGATTTTTTCCCCAGCCTCAAGAAG 8 2 5' arm Tribolium_castaneum mirbase 100 tca-mir-3884 6e-32 -18.5 .....(((.((((..(((..((...(((((........))))).))..)))..)))).)))..... (-18.50)