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  • Title: Specific association of photosystem II and light-harvesting complex II in partially solubilized photosystem II membranes.
    Author: Boekema EJ, van Roon H, Dekker JP.
    Journal: FEBS Lett; 1998 Mar 06; 424(1-2):95-9. PubMed ID: 9537522.
    Abstract:
    In this study, we report the structural characterization of photosystem II complexes obtained from partially solubilized photosystem II membranes. Direct observation by electron microscopy, within a few minutes after a mild disruption of the membranes with the detergent n-dodecyl-alpha,D-maltoside, revealed the presence of several large supramolecular complexes. Images of these complexes were subjected to multivariate statistical analysis and classification procedures, resolving a new complex consisting of the previously characterized dimeric supercomplex of photosystem II and light-harvesting complex II [Boekema et al., Proc. Natl. Acad. Sci. USA 92 (1995) 175-179] and two additional, symmetrically organized protein masses each containing a second type of trimeric light-harvesting II complex. We conclude that large and labile integral membrane proteins, such as photosystem II, can be quickly structurally characterized without extensive purification.
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