Figure 6.

Fusion efficiency as a function of membrane tension in GUVs. Fusion efficiency of LUVs to adhered GUVs is plotted as a function of lateral GUV-membrane tension (black dots, red line is a Hill fit to guide the eye, n = 19 GUVs were pooled). Tension was computed from area expansion according Eq. 2 for assuming an area compressibility modulus K _A of 0.28 Nm⁻¹, a bending rigidity κ of 21 k _B T and a pre-stress-tension σ ₀ of 9.7 × 10⁻⁵ Nm⁻¹. Fusion efficiency is defined in Eq. 3.