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 AGCTGGTGTTGTGAATCAGGCTG GCCGCTTCACAGCACCGGCACG TGGTGCCGTGCCGCAGCTGGTGTTGTGAATCAGGCTGATCCTCTCCTGCTCCTCCGCCGCTTCACAGCACCGGCACGGCACGGCC 4 1 5' arm Petromyzon_marinus mirbase mir-138 0.000005 gga-mir-138-1 0.0000000003 -48.74 ....(((((((((..((((((((((((((...(((.((..............)).)))..)))))))))))))).))))))))). (-48.74)