Highly Effective Renaturation of a Streptokinase from Streptococcus pyogenes DT7 as Inclusion Bodies Overexpressed in Escherichia coli

Table 4

Effect of surfactants on streptokinase activity.

Detergent	Residual activity (%) at the concentration (%)
	0.5	1.0	1.5	2.0
Tween 20	137.5 ± 2.6	138.3 ± 1.8	135.0 ± 2.3	136.5 ± 2.6
Tween 80	119.1 ± 2.8	125.9 ± 2.6	142.2 ± 1.5	115.4 ± 2.2
Triton X-100	150.3 ± 1.9	140.6 ± 3.6	143.6 ± 0.9	126.6 ± 2.0
	Relative activity (%) after incubation for (h)
	0	8	24	48
Tween 20	117.6 ± 1.5	149.2 ± 1.3	154.7 ± 1.2	21.9 ± 0.2
Tween 80	121.9 ± 1.9	151.9 ± 0.7	154.4 ± 1.1	27.6 ± 0.2
Triton X-100	119.3 ± 1.6	162.6 ± 1.3	15.4 ± 0.1	18.1 ± 0.2