Plant and Cell Physiology Advance Access originally published online on September 16, 2006
Plant and Cell Physiology 2006 47(10):1432-1436; doi:10.1093/pcp/pcl008
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Short Communication |
Active NDH-1 Complexes from the Cyanobacterium Synechocystis sp. Strain PCC 6803
National Laboratory of Plant Molecular Genetics, Institute of Plant Physiology and Ecology, Shanghai Institutes for Biological Sciences, Graduate School of the Chinese Academy of Sciences, 300 Fenglin Road, Shanghai, 200032, PR China
* Corresponding author: E-mail, mihl{at}sippe.ac.cn; Fax, +86-21-54924015.
We identified eight bands by staining native gels for NADPH-nitroblue tetrazolium oxidoreductase activity after electrophoresis of n-dodecyl-ß-D-maltoside-treated membranes of Synechocystis sp. strain PCC 6803. Among them, bands A, C, D and E were attributed to the activity of NADPH dehydrogenase (NDH-1). Band A is a highly active supercomplex of NDH-1 (about 1,000 kDa) that was absent in the
ndhD1/D2 mutant and was suppressed under low CO2. Band C was induced under low CO2 or in the
ndhD1/D2 mutant and was converted to bands D and E. Bands A and C appear to be an NDH-1L dimer and NDH-1M, respectively, with subunits essential for the activity.
(Received July 27, 2006; Accepted September 11, 2006)
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