Table 4. Equilibrium Dissociation Constants Determined by SPR for the Interaction of Enfuvirtide from Monolayers (HPA Chip) and Bilayers (L1 Chip)^*.

Lipid	KD±SE**(×10−6 M)		KD monolayer/KD bilayer
	Monolayer	Bilayer
POPC	5.83±1.1	11.3±1.9	0.52
POPC:DPPC(1:1)	1.39±1.1	4.41±1.8	0.32
POPC:DPPC(1:2)	3.28±3.0	4.34±1.8	0.75
DPPC	5.69±3.9	3.93±2.6	1. 5
EPC	11.6±2.1	43.0±9.0	0.27
SM	163±78	6.98±1.6	23

*Calculated by Derived According to a Steady-State Affinity Model.

**Standard Error.