Fig. 3. Overlay of X-ray structures of the cyanobacterial core without the extrinsic OEC proteins and the spinach LHCII complex on to the lumenal top view of
the 3D structure of the spinach LHCII–PSII supercomplex derived from cryo-EM and single particle analysis. The positioning of these X-ray structures and the assignments are refined here from those modelled previously. A monomer taken from the X-ray structure of the LHCII co-ordinates 1RWT.pdb has been used as a model for CP29 and CP26 with adjustments of their Chl a and Chl b contents according to the literature. Colour coding: The
transmembrane α-helices of the D1 (yellow) and D2 (orange) proteins are
displayed as ribbons. Similarly, ribbons are used for the α-helices of CP43
(green) and CP47 (red) including those in the extrinsic loops joining their
transmembrane helices Vand VI. The α- and β-subunits of cytochrome b559 (purple) and low molecular
weight subunits (white) are also shown. Chlorophylls in yellow stick representation. Scale bar represents 5 nm.
