Figure 7. Molecular models of predominant 2D arrays found in Arabidopsis wild-type and soq1 grana membranes.

These structures were generated by fitting a molecular model of the PSII C₂S₂M₂ supercomplex [2] into the average unit cell of each class (Table S1), then refined by determining the range of PSII orientations that did not yield steric collision. Reaction center core dimer (C₂), S-type light harvesting trimers, and minor antenna CP29 are represented in yellow; M-type trimers, CP24, and CP26 antenna monomers are depicted in red, green, and cyan respectively. Inter-supercomplex M-CP24 interactions are indicated by white arrowheads, and CP26 interactions are indicated by white arrows.