Single particle analysis of thylakoid proteins from Thermosynechococcus elongatus and Synechocystis 6803: Localization of the CupA subunit of NDH-1

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Abstract

The larger protein complexes of the cyanobacterial photosynthetic membrane of Thermosynechoccus elongatus and Synechocystis 6803 were studied by single particle electron microscopy after detergent solubilization, without any purification steps. Besides the "standard" L-shaped NDH-1L complex, related to complex I, large numbers of a U-shaped NDH-1MS complex were found in both cyanobacteria. In membranes from Synechocystis ΔcupA and ΔcupA/cupB mutants the U-shaped complexes were absent, indicating that CupA is responsible for the U-shape by binding at the tip of the membrane-bound arm of NDH-1MS. Comparison of membranes grown under air levels of CO2 or 3% CO2 indicates that the number of NDH-1MS particles is 30-fold higher under low-CO2. © 2007 Federation of European Biochemical Societies.

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APA

Folea, I. M., Zhang, P., Nowaczyk, M. M., Ogawa, T., Aro, E. M., & Boekema, E. J. (2008). Single particle analysis of thylakoid proteins from Thermosynechococcus elongatus and Synechocystis 6803: Localization of the CupA subunit of NDH-1. FEBS Letters, 582(2), 249–254. https://doi.org/10.1016/j.febslet.2007.12.012

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