... from the fact that these membranes are densely packed with membrane integral protein complexes (molecular crowding). Theoretical analysis of PQ (plastoquinone) and protein diffusion in higher plant grana thylakoids reveal very inefficient lateral diffusion. In contrast, measurement of protein mobility...

... of plastoquinone and quinone analogue inhibitors discerned in the structure. These sites mark the pathway(s) of quinone translocation across the complex. Table 2 Summary of the structural features of the b 6 f complex Feature 1. 220 kDa dimer; eight subunits; 26 TMHs surround the large...