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  Recent Advances in the Structure Analysis of Rhodopseudomonas viridis Reaction Center Mutants

Sinning, I. M., Koepke, J., & Michel, H. (1990). Recent Advances in the Structure Analysis of Rhodopseudomonas viridis Reaction Center Mutants. Berlin, Heidelberg: Springer-Verlag 1990.

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 Creators:
Sinning, Irmgard Maria1, Author              
Koepke, Jürgen1, Author              
Michel, Hartmut1, Author              
Affiliations:
1Department of Molecular Membrane Biology, Max Planck Institute of Biophysics, Max Planck Society, ou_2068290              

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Free keywords: Purple Bacterium; Primary Electron Donor; Primary Charge Separation; Secondary Quinone; Side Chain Oxygen
 Abstract: The primary charge separation in photosynthesis is mediated by a membrane protein pigment complex, the photosynthetic reaction center (RC). The RC from the purple bacterium Rhodopseudomonas (Rps). viridis has been crystallized and the subsequent X-ray structure analysis provided a complete picture of protein structure and pigment arrangement (see 1). The RC consists of four protein subunits, the H (high), M (medium) and L (low) subunits, according to their apparent molecular weights from SDS-PAGE, and a tightly bound cytochrome subunit. Four heme groups are covalently bound to the cytochrome subunit, whereas the other pigments are embedded into the L and M subunits. There are four bacteriochlorophyll b molecules, two of them form the special pair (the primary electron donor P), two bacteriophaeophytin b molecules, two chemically different quinones, QA (primary quinone, a menaquinone-9) and QB (secondary quinone, a ubiquinone-9, see 2), one carotenoid molecule (a dihydroneurosporene) and a non-heme iron. These pigments are arranged in a highly symmetric manner in two branches extending from the special pair to the non-heme iron (3). However, only one branch is active in electron transfer.

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Language(s): eng - English
 Dates: 1990-01
 Publication Status: Published in print
 Pages: 10
 Publishing info: -
 Table of Contents: -
 Rev. Type: Peer
 Identifiers: DOI: 10.1007/978-3-642-61297-8_20
 Degree: -

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Title: Reaction Centers of Photosynthetic Bacteria
Place of Event: Feldafing-II-Meeting
Start-/End Date: -

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Title: Springer Series in Biophysics
Source Genre: Series
 Creator(s):
Michel-Beyerle, Maria-Elisabeth1, Editor
Affiliations:
1 Conference proceedings, ou_persistent22            
Publ. Info: Berlin, Heidelberg : Springer-Verlag 1990
Pages: - Volume / Issue: 6 Sequence Number: - Start / End Page: 199 - 208 Identifier: DOI: 10.1007/978-3-642-61297-8
ISBN: 978-3-642-64781-9