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 TGAGGTAGTAGGTTGTATAGT TATACAGCTTGCTAGCTTTCT TCTGGCAAATTGAGGTAGTAGGTTGTATAGTAGTATCTATCTAGCATACTATACAGCTTGCTAGCTTTCTTTGCTTGA 2 0 5' arm Drosophila_grimshawi mirbase let-7 6e-33 dgr-let-7-2 1e-36 -34.2 ((.((((((..(((.(((((((((((((((((((.........)).))))))))))))))))).)))..)))))).)) (-34.20)