TABLE 1.

C. difficile toxin A and toxin B recombinant fragments used for domain mapping

Toxin	Domain	Amino acids	Fragment name
A	C terminus of GST, N terminus of proteasea	300–660	TcdA300–660
	C terminus of protease, N terminus of translocation domain	660–1100	TcdA660–1100
B	GTD	10–520	TcdB10–520
	Protease	510–1110	TcdB510–1110
	Translocation domain of N terminus	1110–1530	TcdB1110–1530
	Translocation domain of C terminus	1530–1750	TcdB1530–1750
	CTD	1750–2360	TcdB1750–2360

^aGST, glutathione S-transferase.