Sequence analysis of S. aurata TGF-β6. Nucleotide sequence of full length cDNA and deduced amino acid sequence, shown in single-letter code. Putative proteolytic site is in bold letters, underlined and italicized. The conserved nine cysteines in the mature peptide and three potential N-glycosylation sites in the prodomain are bold and underlined. The asterisk indicates the stop codon. Sites of intron insertions are indicated by empty thick arrows. TATAAA (TATA box motif) and polyadenylation signal motifs, AATAAA and ATTAAA, are underlined and italicized. Accession number for the cDNA sequence is FJ966093.