TABLE 1.

Summary of kinetic constants for IpaH9.8

E2 enzyme	[S]½	nH	kcat	kcat/[S]½
	nm		s−1	m−1 s−1
Ubc5A	115 ± 26	1.7 ± 0.1	0.025 ± 0.001	2.2 × 105
Ubc5B	140 ± 32	1.8 ± 0.1	0.071 ± 0.004	5.1 × 105
Ubc5C	147 ± 53	2.0 ± 0.3	0.069 ± 0.004	4.7 × 105