Figure 3.
Figure 3. Electrostatic interaction free energy of ions along the lateral fenestrations in zfP2X4 and rP2X2. Results for zfP2X4 are shown in A, whereas those for rP2X2 are shown in B. The ion-accessible positions are shown as orange spheres near the extracellular membrane interface around Z = 15–25 Å (left). Free energy plots (ΔΔGint) for cross sections through the lateral fenestrations (Z = 16, 18, and 20 Å) are shown on the right for Na+ (top) and Cl− (bottom). Black squares indicate ΔΔGint < −2 Kcal mol−.

Electrostatic interaction free energy of ions along the lateral fenestrations in zfP2X4 and rP2X2. Results for zfP2X4 are shown in A, whereas those for rP2X2 are shown in B. The ion-accessible positions are shown as orange spheres near the extracellular membrane interface around Z = 15–25 Å (left). Free energy plots (ΔΔGint) for cross sections through the lateral fenestrations (Z = 16, 18, and 20 Å) are shown on the right for Na+ (top) and Cl− (bottom). Black squares indicate ΔΔGint < −2 Kcal mol−.

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