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 TGTCATGGAGTTGCTCTCTTT AGAGAGCTATCCGTCGACAGT AAGAGAGCTATCCGTCGACAGTATAATTTTTAACTACACTGTCATGGAGTTGCTCTCTTTAT 3 2 3' arm Acyrthosiphon_pisum mirbase mir-281 0.00000000005 tca-mir-281 0.000000000003 -25.3 ((((((((..(((((.((((((.((.........)).)))))))))))...))))))))... (-25.30)