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 TGAGGTAGTAGGTTGTATAGTT CTGTACAACCTCCTAGCTTTCC AGGTTGAGGTAGTAGGTTGTATAGTTTAGAATTACACCAAGGGAGATAACTGTACAACCTCCTAGCTTTCCT 3 0 5' arm Gallus_gallus mirbase let-7 2e-29 tgu-let-7a-2 2e-35 -25.2 (((..(((.(((.(((((((((((((.....(..(.....)..)...))))))))))))).))).))).))) (-25.20)