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 CTATACAACTTACTGTCTTTCC GTCCTTTGGGGTGAGGTAGTAGGTTGTATAGTTTTAGGGTTATACCCTTCCTGTCAGATAACTATACAACTTACTGTCTTTCCT 3 0 5' arm Tetraodon_nigroviridis mirbase let-7 2e-29 fru-let-7a-2 9e-38 -33.62 ........(((.(((..((((((((((((((((..((((.....))))...........))))))))))))))))..))).))) (-33.62)