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 ACTCCAAAACAGAGCACAGCG CGGGGTTCCTTTTTCGAGT ACTCCAAAACAGAGCACAGCGGGACTACACATGCTCGTAGTCCCGCGGGGTTCCTTTTTCGAGT 6 0 5' arm Ciona_intestinalis mirbase 100 100 -30.4 ((((.((((..((((...((((((((((........))))))))))...))))..)))).)))) (-30.40)