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      Self-assembled monolayer of light-harvesting core complexes of photosynthetic bacteria on an amino-terminated ITO electrode

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          Abstract

          Light-harvesting antenna core (LH1-RC) complexes isolated from Rhodospirillum rubrum and Rhodopseudomonas palustris were successfully self-assembled on an ITO electrode modified with 3-aminopropyltriethoxysilane. Near infra-red (NIR) absorption, fluorescence, and IR spectra of these LH1-RC complexes indicated that these LH1-RC complexes on the electrode were stable on the electrode. An efficient energy transfer and photocurrent responses of these LH1-RC complexes on the electrode were observed upon illumination of the LH1 complex at 880 nm.

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          Crystal structure of an integral membrane light-harvesting complex from photosynthetic bacteria

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            Crystal structure of the RC-LH1 core complex from Rhodopseudomonas palustris.

            The crystal structure at 4.8 angstrom resolution of the reaction center-light harvesting 1 (RC-LH1) core complex from Rhodopseudomonas palustris shows the reaction center surrounded by an oval LH1 complex that consists of 15 pairs of transmembrane helical alpha- and beta-apoproteins and their coordinated bacteriochlorophylls. Complete closure of the RC by the LH1 is prevented by a single transmembrane helix, out of register with the array of inner LH1 alpha-apoproteins. This break, located next to the binding site in the reaction center for the secondary electron acceptor ubiquinone (UQB), may provide a portal through which UQB can transfer electrons to cytochrome b/c1.
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              Integration of Photosynthetic Protein Molecular Complexes in Solid-State Electronic Devices

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                Author and article information

                Contributors
                +81-52-7355226 , +81-52-7355226 , nango@nitech.ac.jp
                Journal
                Photosynth Res
                Photosynthesis Research
                Kluwer Academic Publishers (Dordrecht )
                0166-8595
                1573-5079
                17 November 2006
                October 2006
                : 90
                : 1
                : 17-21
                Affiliations
                [1 ]Department of Applied Chemistry, Tsukuri College, Nagoya Institute of Technology, Gokiso-cho, Showa-ku, Nagoya, 466-8555 Aichi Japan
                [2 ]Nagoya Municipal Industrial Research Institute, Rokuban 3-4-41, Atsuta-ku, Nagoya, 456-0058 Japan
                [3 ]Division of Biochemistry and Molecular Biology, Institute of Biomedical and Life Sciences, University of Glasgow, University Avenue, Glasgow, G12 8QQ UK
                Article
                9101
                10.1007/s11120-006-9101-9
                1769344
                17111238
                7ef4a930-52af-4bbc-a738-63443d8729cf
                © Springer Science+Business Media B.V. 2006
                History
                : 8 June 2006
                : 24 August 2006
                Categories
                Regular Paper
                Custom metadata
                © Springer Science+Business Media B.V. 2006

                Plant science & Botany
                photosynthesis,energy transfer,light-harvesting complex,electrode,photocurrent,light harvesting-reaction center complex

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