Table 1. Computed rate constants and 95% confidence intervals for the barnase–barstar binding process.

Process	Rate constant	Value
Unbound state → encounter complex	k 1 (M–1 s–1)	1.8 ± 0.2 × 109
Encounter complex → bound state	k 2 (s–1)	2.7 ± 0.5 × 1010
Unbound state → bound state	k on (M–1 s–1)	2.3 ± 1.0 × 108
	Experimental kon (ref. 19) (M–1 s–1)	2.86 ± 0.67 × 108