Figure 6: Increased Vres at D1-208 increases the interaction between the d1 and d2 helices.
From: A single residue controls electron transfer gating in photosynthetic reaction centers

Using space filling models for different amino-acids at the D1-208 locus, the increased contact interaction between the two helices is depicted. See Supplementary Table 3 for the precise volume of D1-208 in the different mutants.