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 TGAGGTAGGAGGTTGTATAGTT CTATACGGCCTCCTAGCTTTCC GCCCCGGGCTGAGGTAGGAGGTTGTATAGTTGAGGAGGACACCCACGGAGATCACTATACGGCCTCCTAGCTTTCCCCAG 3 0 5' arm Sus_scrofa mirbase let-7 1e-34 eca-let-7e 6e-39 -37 .....(((..(((.((((((((((((((((.((.(.((....)).).....)))))))))))))))))).)))..))).. (-37.00)