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 TGTCAGGACGACAAAAGCTCTGA AGAGTTTTGTTGCCCCGACTCC GGTTCACAAGTGGTGTCAGGACGACAAAAGCTCTGAGTCCTCTCAACACCAGAGTTTTGTTGCCCCGACTCCTTTTGTGGTCA 4 1 5' arm Branchiostoma_floridae mirbase 100 bfl-mir-4872c-2 2e-32 -31.9 .(..((((((.((.(((.((.((((((((.(((((.((.........))))))))))))))).)).))).)).))))))..). (-31.90)