The nucleotide sequence of the fugu sod2 gene. Exons of the sod2 gene are shown in capital letters and nucleotide position is indicated the numbers end the rows. The start site of transcription is indicated by +1. The 5’ upstream sequence, 3’downstream sequence and introns are shown in lower-case letters. A putative CAAT box, TATA box and polyadenylation signal (AATAAAA) are shown capital letters highlighted in yellow. The stop codon (TAG) is indicated by an asterisk.