We report a structural characterization by electron microscopy and image analysis of a supramolecular complex consisting of seven trimeric light-harvesting complex II proteins. The complex was readily observed in partially-solubilized Tris-washed photosystem II membranes from spinach but was also found to occur, with a low frequency, in oxygen-evolving photosystem II membranes. The structure reveals six peripheral trimers with the same rotational orientation and a central trimer with the opposite orientation. We conclude that the heptamer represents a naturally occurring aggregation state of part of the light-harvesting complex II trimers in the thylakoid membranes. Copyright (C) 1999 Federation of European Biochemical Societies.
Dekker, J. P., Van Roon, H., & Boekem, E. J. (1999). Heptameric association of light-harvesting complex II trimers in partially solubilized photosystem II membranes. FEBS Letters, 449(2–3), 211–214. https://doi.org/10.1016/S0014-5793(99)00442-1