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 GGCGTAGAGCGACTAAGGAACC TCCCGGAGTCGTTCTATACGCCGT CCCTGGCTCGGTCCCGGAGTCGTTCTATACGCCGTTTGTACTTGATAAAATGGCGTAGAGCGACTAAGGAACCAAGACA 3 2 3' arm Branchiostoma_floridae mirbase 100 bfl-mir-4904 1e-39 -33.7 ......((.(((.((..(((((((((..(((((((((..........))))))))))))))))))..)).))).))... (-33.70)