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 TAATACTGCCTGGTAATGATGA ATCAACCCGGTAGTACGATA GGTCACTGAAGCATCAACCCGGTAGTACGATATGTGAGCTGTATAATACTGCCTGGTAATGATGATTCAGTGGCGTCGCG 4 2 3' arm Ciona_savignyi mirbase mir-200 2e-36 xtr-mir-200b 0.0000009 -34.9 .(((((((((.((((((((.(((((((..((((.......))))..))))))).)))..))))).)))))))))...... (-34.90)