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 CATTGACAACAACTTGACCGGCGTT ATTCGGTCCGGAGTCAATGGG ATTCGGTCCGGAGTCAATGGGTTATCTTTCAAAACCCCCCATTGACAACAACTTGACCGGCGTT 6 4 3' arm Caenorhabditis_elegans mirbase ceN74-2 2e-29 cbr-mir-2214 0.0000007 -20.39 ..((((((.((.(((((((((................))))))))).....)).)))))).... (-20.39)