Table 2. Affinity determination by QCM (K_D values in nM).

Protein		human						mouse
		IgG		Fab		Fc		IgG		Fab		Fc
	pH	KD1	KD2	KD1	KD2	KD1	KD2	KD1	KD2	KD1	KD2	KD1	KD2
scDb-SpGC3	7.4	3	38	159	663	6	17	33	593	118	1100	79	926
	6	2	33	95	667	1	28	27	406	130	874	53	858
scDb-SpGC3Fab	7.4	120	983	88	969	-	-	61	1030	96	1620	-	-
	6	169	1520	83	753	767	896	54	822	93	826	38	414
scDb-SpGC3FabRR	7.4	29	385	167	1040	-	-	55	388	62	413	-	-
	6	49	191	43	461	39	227	34	296	19	255	40	289