IDEAS home Printed from https://ideas.repec.org/a/nat/nature/v508y2014i7495d10.1038_nature13197.html
   My bibliography  Save this article

Structure of the LH1–RC complex from Thermochromatium tepidum at 3.0 Å

Author

Listed:
  • Satomi Niwa

    (Graduate School of Science, Kyoto University, Sakyo-ku, Kyoto 606-8502, Japan)

  • Long-Jiang Yu

    (Faculty of Science, Ibaraki University, Mito, Ibaraki 310-8512, Japan)

  • Kazuki Takeda

    (Graduate School of Science, Kyoto University, Sakyo-ku, Kyoto 606-8502, Japan)

  • Yu Hirano

    (Graduate School of Science, Kyoto University, Sakyo-ku, Kyoto 606-8502, Japan)

  • Tomoaki Kawakami

    (Faculty of Science, Ibaraki University, Mito, Ibaraki 310-8512, Japan)

  • Zheng-Yu Wang-Otomo

    (Faculty of Science, Ibaraki University, Mito, Ibaraki 310-8512, Japan)

  • Kunio Miki

    (Graduate School of Science, Kyoto University, Sakyo-ku, Kyoto 606-8502, Japan)

Abstract

The light-harvesting core antenna (LH1) and the reaction centre (RC) of purple photosynthetic bacteria form a supramolecular complex (LH1–RC) to use sunlight energy in a highly efficient manner. Here we report the first near-atomic structure, to our knowledge, of a LH1–RC complex, namely that of a Ca2+-bound complex from Thermochromatium tepidum, which reveals detailed information on the arrangement and interactions of the protein subunits and the cofactors. The RC is surrounded by 16 heterodimers of the LH1 αβ-subunit that form a completely closed structure. The Ca2+ ions are located at the periplasmic side of LH1. Thirty-two bacteriochlorophyll and 16 spirilloxanthin molecules in the LH1 ring form an elliptical assembly. The geometries of the pigment assembly involved in the absorption characteristics of the bacteriochlorophyll in LH1 and excitation energy transfer among the pigments are reported. In addition, possible ubiquinone channels in the closed LH1 complex are proposed based on the atomic structure.

Suggested Citation

  • Satomi Niwa & Long-Jiang Yu & Kazuki Takeda & Yu Hirano & Tomoaki Kawakami & Zheng-Yu Wang-Otomo & Kunio Miki, 2014. "Structure of the LH1–RC complex from Thermochromatium tepidum at 3.0 Å," Nature, Nature, vol. 508(7495), pages 228-232, April.
    • Handle: RePEc:nat:nature:v:508:y:2014:i:7495:d:10.1038_nature13197
    DOI: 10.1038/nature13197
    as

    Download full text from publisher

    File URL: https://www.nature.com/articles/nature13197
    File Function: Abstract
    Download Restriction: Access to the full text of the articles in this series is restricted.
    File URL: https://libkey.io/10.1038/nature13197?utm_source=ideas
    LibKey link: if access is restricted and if your library uses this service, LibKey will redirect you to where you can use your library subscription to access this item
    ---><---

    As the access to this document is restricted, you may want to search for a different version of it.

    Citations

    Citations are extracted by the CitEc Project, subscribe to its RSS feed for this item.
    as


    Cited by:

    1. Peng Cao & Laura Bracun & Atsushi Yamagata & Bern M. Christianson & Tatsuki Negami & Baohua Zou & Tohru Terada & Daniel P. Canniffe & Mikako Shirouzu & Mei Li & Lu-Ning Liu, 2022. "Structural basis for the assembly and quinone transport mechanisms of the dimeric photosynthetic RC–LH1 supercomplex," Nature Communications, Nature, vol. 13(1), pages 1-12, December.
    2. Yuta Sawanaka & Masahiro Yamashina & Hiroyoshi Ohtsu & Shinji Toyota, 2022. "A self-complementary macrocycle by a dual interaction system," Nature Communications, Nature, vol. 13(1), pages 1-8, December.

    More about this item

    Statistics

    Access and download statistics

    Corrections

    All material on this site has been provided by the respective publishers and authors. You can help correct errors and omissions. When requesting a correction, please mention this item's handle: RePEc:nat:nature:v:508:y:2014:i:7495:d:10.1038_nature13197. See general information about how to correct material in RePEc.

    If you have authored this item and are not yet registered with RePEc, we encourage you to do it here. This allows to link your profile to this item. It also allows you to accept potential citations to this item that we are uncertain about.

    We have no bibliographic references for this item. You can help adding them by using this form .

    If you know of missing items citing this one, you can help us creating those links by adding the relevant references in the same way as above, for each refering item. If you are a registered author of this item, you may also want to check the "citations" tab in your RePEc Author Service profile, as there may be some citations waiting for confirmation.

    For technical questions regarding this item, or to correct its authors, title, abstract, bibliographic or download information, contact: Sonal Shukla or Springer Nature Abstracting and Indexing (email available below). General contact details of provider: http://www.nature.com .

    Please note that corrections may take a couple of weeks to filter through the various RePEc services.

    IDEAS is a RePEc service. RePEc uses bibliographic data supplied by the respective publishers.