Table 3. Nomenclature for the omalizumab-derived Fabs and scFv.

Construct	Sequence	Structure	No. of molecules in the asymmetric unit
FabXol	Wild type	FabXol1	1: FabXol1
		FabXol2	2: FabXol2A, FabXol2B
FabXol1	Leu158Pro†	FabXol11	2: FabXol11A, FabXol11B
		FabXol12	4: FabXol12A, FabXol12B, FabXol12C, FabXol12D
FabXol2	Ser81Arg†, Gln83Arg†	FabXol2	1: FabXol2
FabXol3	Ser81Arg†, Gln83Arg†, Leu158Pro†	FabXol3	1: FabXol3
scFvXol	Wild type†	scFvXol	1: scFvXol

^†Mutation in the Fab light chain.

^‡The V_L and V_H domains are linked by a (Gly₄Ser)₄ linker.