Numerical values for differences in LIN and STE occupancy in the R218Q/R221Q system. (A–C) Fold change between LIN and STE head group occupancies across layers of 0.5 Å in the horizontal plane from site I (A), R218 (B), and Y268 (C) for each consecutive 1-µs interval in 5 µs of AA MD of the R218Q/R221Q system.