Figure 1. In scale model of grana thylakoids in higher plants under dark/low light conditions (upper panel) and high light (lower panel). Membrane bilayers (4 nm) are in gray, the aqueous luminal space in blue. The green and pink structures show the PSII holocomplex and damaged PSII, respectively. Deg1, Deg protease; FtsH, FtsH protease. All protein complexes are shown in scale. The lateral grana diameter is not in scale.