TABLE 3.

Kinetics of binding of recombinant Fab fragments to affinity-purified F antigen, as determined by surface plasmon resonance

Fab fragment	kon (s−1 M−1)	koff (s−1)	Kd (nM)
RSV19	1.7 × 101	1.1 × 10−5	6,000
CM2	5.1 × 104	1.9 × 10−4	3.7
CM6	4.3 × 104	1.9 × 10−4	4.4
CM68	1.9 × 104	1.2 × 10−4	6.2
DM1	2.5 × 104	3.8 × 10−4	15.1
DM2	8.1 × 104	1.4 × 10−4	17.0