Table 1.

In vitro cytotoxic activity of Mut2, LT, and TNF

	Amino acid sequence	Amino acids, n	Specific activity, units/mg	Relative activity vs. TNF
	1               12                        172
LT	MLPGVGLTPSAA ----------------L	172	5.80  ×  108	4.14
Mut2†	MFPA ----------------L	164	3.72  ×  108	2.66
TNF	MVRSSSRTPSDK ∗∗∗∗∗∗∗∗∗∗∗L	157	1.40  ×  108	1.00

Dashes indicate the amino acid sequence of LT from residues 13 to 171. Asterisks indicate the amino acid sequence of TNF corresponding to residues 13–156. 

^†Registered in DDBJ, AB000737.