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 CGCCTCGCAAATCCCTCGCAGAA TTGCGAGGAATTTGCGAGGGTC CGACAACGCCTCGCAAATCCCTCGCAGAAGAAGCCTCAATATCCTAATTGAGTAACCCTAATTTTGCGAGGAATTTGCGAGGGTCGTTG 1 1 5' arm Arabidopsis_thaliana pmrd 100 100 -41.8 ((((.((.((((((((((.((((((((((..((.((((((......)))))).....))..)))))))))).)))))))))))).)))) (-41.80)