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- PDB-7c9r: STRUCTURE OF PHOTOSYNTHETIC LH1-RC SUPER-COMPLEX OF THIORHODOVIBR... -
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Entry | Database: PDB / ID: 7c9r | |||||||||||||||||||||
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Title | STRUCTURE OF PHOTOSYNTHETIC LH1-RC SUPER-COMPLEX OF THIORHODOVIBRIO STRAIN 970 | |||||||||||||||||||||
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![]() | PHOTOSYNTHESIS / LH1-RC / PURPLE BACTERIA | |||||||||||||||||||||
Function / homology | ![]() : / plasma membrane-derived chromatophore membrane / plasma membrane light-harvesting complex / bacteriochlorophyll binding / photosynthesis, light reaction / electron transporter, transferring electrons within the cyclic electron transport pathway of photosynthesis activity / photosynthetic electron transport in photosystem II / membrane => GO:0016020 / electron transfer activity / iron ion binding ...: / plasma membrane-derived chromatophore membrane / plasma membrane light-harvesting complex / bacteriochlorophyll binding / photosynthesis, light reaction / electron transporter, transferring electrons within the cyclic electron transport pathway of photosynthesis activity / photosynthetic electron transport in photosystem II / membrane => GO:0016020 / electron transfer activity / iron ion binding / heme binding / metal ion binding / plasma membrane Similarity search - Function | |||||||||||||||||||||
Biological species | ![]() | |||||||||||||||||||||
Method | ELECTRON MICROSCOPY / single particle reconstruction / cryo EM / Resolution: 2.82 Å | |||||||||||||||||||||
![]() | Tani, K. / Kanno, R. / Makino, Y. / Hall, M. / Takenouchi, M. / Imanishi, M. / Yu, L.-J. / Overmann, J. / Madigan, M.T. / Kimura, Y. ...Tani, K. / Kanno, R. / Makino, Y. / Hall, M. / Takenouchi, M. / Imanishi, M. / Yu, L.-J. / Overmann, J. / Madigan, M.T. / Kimura, Y. / Mizoguchi, A. / Humbel, B.M. / Wang-Otomo, Z.-Y. | |||||||||||||||||||||
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![]() | ![]() Title: Cryo-EM structure of a Ca-bound photosynthetic LH1-RC complex containing multiple αβ-polypeptides. Authors: Kazutoshi Tani / Ryo Kanno / Yuki Makino / Malgorzata Hall / Mizuki Takenouchi / Michie Imanishi / Long-Jiang Yu / Jörg Overmann / Michael T Madigan / Yukihiro Kimura / Akira Mizoguchi / ...Authors: Kazutoshi Tani / Ryo Kanno / Yuki Makino / Malgorzata Hall / Mizuki Takenouchi / Michie Imanishi / Long-Jiang Yu / Jörg Overmann / Michael T Madigan / Yukihiro Kimura / Akira Mizoguchi / Bruno M Humbel / Zheng-Yu Wang-Otomo / ![]() ![]() ![]() ![]() Abstract: The light-harvesting-reaction center complex (LH1-RC) from the purple phototrophic bacterium Thiorhodovibrio strain 970 exhibits an LH1 absorption maximum at 960 nm, the most red-shifted absorption ...The light-harvesting-reaction center complex (LH1-RC) from the purple phototrophic bacterium Thiorhodovibrio strain 970 exhibits an LH1 absorption maximum at 960 nm, the most red-shifted absorption for any bacteriochlorophyll (BChl) a-containing species. Here we present a cryo-EM structure of the strain 970 LH1-RC complex at 2.82 Å resolution. The LH1 forms a closed ring structure composed of sixteen pairs of the αβ-polypeptides. Sixteen Ca ions are present in the LH1 C-terminal domain and are coordinated by residues from the αβ-polypeptides that are hydrogen-bonded to BChl a. The Ca-facilitated hydrogen-bonding network forms the structural basis of the unusual LH1 redshift. The structure also revealed the arrangement of multiple forms of α- and β-polypeptides in an individual LH1 ring. Such organization indicates a mechanism of interplay between the expression and assembly of the LH1 complex that is regulated through interactions with the RC subunits inside. | |||||||||||||||||||||
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-Related structure data
Related structure data | ![]() 30314MC M: map data used to model this data C: citing same article ( |
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Noncrystallographic symmetry (NCS) | NCS domain:
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