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 ACGTGGATGTGGACTTGATA TCATTTCCTCACCAATTA TCATTTCCTCACCAATTATGTATTGCAAAAGCATAACGTGGATGTGGACTTGATA 6 2 3' arm Ciona_intestinalis mirbase 100 cin-mir-4087 2e-25 -14 (((..(((.(((((.((((((.........))))))..))).)).)))..))).. (-14.00)