Table 2.

Equilibrium dissociation constants for the binding of clusters II and IV to C1q.

Immobilized protein	Injected protein	KD (M)
cluster II	sC1q	3.49 ± 0.45 × 10−9
cluster IV	sC1q	0.69 ± 0.11 × 10−9
sC1q	cluster II	2.75 ± 0.55 × 10−7
sC1q	cluster IV	1.58 ± 0.02 × 10−7
rC1q WT	cluster II	3.18 ± 0.67 × 10−7
rC1q WT	cluster IV	1.83 ± 0.02 × 10−7
rC1q ABC	cluster II	5.14 ± 0.55 × 10−7
rC1q ABC	cluster IV	2.22 ± 0.11 × 10−7

Values are expressed as means ± SE of two separate experiments.