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 ATTTGGAGTGCAGAGTGGCCTGT AGGTCTTTCTACATCTCCAAAACA TGTCCCTGATTTGGAGTGCAGAGTGGCCTGTTAACTACAGACCAGGTCTTTCTACATCTCCAAAACAGGGCCC 4 1 5' arm Branchiostoma_floridae mirbase 100 100 -31.1 ...(((((.(((((((((.((((.((((((............)))))).)))).)).))))))).)))))... (-31.10)