Fig. 5: Illustration of the pH switch of PsbS. | Nature Communications

Fig. 5: Illustration of the pH switch of PsbS.

From: The molecular pH-response mechanism of the plant light-stress sensor PsbS

Fig. 5

Schematic illustration of the pH-dependent movement of helix H2 and folding of helix H3 in WT PsbS at low pH. Protonation of Glu-2 results in repositioning of amphipathic helix H2 from the aqueous phase to the membrane phase, while protonation of Glu-1 causes the H3 element to switch from a loop segment into a 310 helix.

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