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 TGGGGACTCGAAGACGATCATAT ATGTTGCTTCTAGGAGTCCGCCA TGGGGACTCGAAGACGATCATATACCATCCTAGTCTCAACCATAAACGATGCCGACCAGGGATTGGCGGATGTTGCTTCTAGGAGTCCGCCA 3 6 5' arm Populus_euphratica mirbase SSU_rRNA_eukarya 5e-46 100 -28.1 .((((((((((((.(((.(((...(((((((.(((.....(((.....)))..)))..)))).)))...))))))))))...)))))).)). (-28.10)