DNA sequencing of the eta gene coding for staphylococcal exfoliative toxin serotype A.

We report the nucleotide sequence of a 1.45 kb segment containing the eta gene, coding for staphylococcal exfoliative toxin A (ETA), isolated from the recombinant plasmid pETA-J3. The coding region of 840 bp specified a polypeptide of 280 amino acid residues which included a putative 38 residue signal sequence. The amino acid composition deduced from the structural gene was in agreement with the results of peptide analysis of the ETA molecule reported by others. The sequence of the 35 N-terminal amino acid residues of ETA derived from Staphylococcus aureus strain ZM was also consistent with that deduced from the DNA sequencing.