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 AAGTGTACCCGGATCTGATATCC ATGCAGATTTTGGTACACTTCA AAGTGTACCCGGATCTGATATCCTATCACCAAAAAGAGGATGCAGATTTTGGTACACTTCA 2 1 5' arm Caenorhabditis_elegans mirbase 100 cel-mir-2208b 5e-29 -27.1 (((((((((..((((((.((((((............))))))))))))..))))))))).. (-27.10)