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Yorodumi- PDB-8z4v: LH2 complex from Ectothiorhodospira haloalkaliphila at near-atomi... -
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-Basic information
Entry | Database: PDB / ID: 8z4v | ||||||
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Title | LH2 complex from Ectothiorhodospira haloalkaliphila at near-atomic resolution | ||||||
Components |
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Keywords | PHOTOSYNTHESIS / Light-harvesing / purple sulfur bacteria / cryo-EM | ||||||
Function / homology | Function and homology information plasma membrane light-harvesting complex / bacteriochlorophyll binding / photosynthesis, light reaction / electron transporter, transferring electrons within the cyclic electron transport pathway of photosynthesis activity / metal ion binding / plasma membrane Similarity search - Function | ||||||
Biological species | Ectothiorhodospira haloalkaliphila ATCC 51935 (bacteria) | ||||||
Method | ELECTRON MICROSCOPY / single particle reconstruction / cryo EM / Resolution: 1.7 Å | ||||||
Authors | Burtseva, A.D. / Baymukhametov, T.N. / Popov, V.O. / Ashikhmin, A.A. / Boyko, K.M. | ||||||
Funding support | Russian Federation, 1items
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Citation | Journal: Structure / Year: 2024 Title: Near-atomic cryo-EM structure of the light-harvesting complex LH2 from the sulfur purple bacterium Ectothiorhodospira haloalkaliphila. Authors: Anna D Burtseva / Timur N Baymukhametov / Maxim A Bolshakov / Zoya К Makhneva / Andrey V Mardanov / Andrey M Tsedilin / Huawei Zhang / Vladimir O Popov / Aleksandr A Ashikhmin / Konstantin M Boyko / Abstract: Bacteria with the simplest system for solar energy absorption and conversion use various types of light-harvesting complexes for these purposes. Light-harvesting complex 2 (LH2), an important ...Bacteria with the simplest system for solar energy absorption and conversion use various types of light-harvesting complexes for these purposes. Light-harvesting complex 2 (LH2), an important component of the bacterial photosynthetic apparatus, has been structurally well characterized among purple non-sulfur bacteria. In contrast, so far only one high-resolution LH2 structure from sulfur bacteria is known. Here, we report the near-atomic resolution cryoelectron microscopy (cryo-EM) structure of the LH2 complex from the purple sulfur bacterium Ectothiorhodospira haloalkaliphila, which allowed us to determine the predominant polypeptide composition of this complex and the identification of the most probable type of its carotenoid. Comparison of our structure with the only known LH2 complex from a sulfur bacterium revealed severe differences in the overall ring-like organization. Expanding the architectural universe of bacterial light-harvesting complexes, our results demonstrate that, as observed for non-sulfur bacteria, the LH2 complexes of sulfur bacteria may also exhibit various types of spatial organization. | ||||||
History |
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-Structure visualization
Structure viewer | Molecule: MolmilJmol/JSmol |
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-Downloads & links
-Download
PDBx/mmCIF format | 8z4v.cif.gz | 212.9 KB | Display | PDBx/mmCIF format |
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PDB format | pdb8z4v.ent.gz | Display | PDB format | |
PDBx/mmJSON format | 8z4v.json.gz | Tree view | PDBx/mmJSON format | |
Others | Other downloads |
-Validation report
Summary document | 8z4v_validation.pdf.gz | 2.2 MB | Display | wwPDB validaton report |
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Full document | 8z4v_full_validation.pdf.gz | 2.3 MB | Display | |
Data in XML | 8z4v_validation.xml.gz | 62.5 KB | Display | |
Data in CIF | 8z4v_validation.cif.gz | 72.2 KB | Display | |
Arichive directory | https://data.pdbj.org/pub/pdb/validation_reports/z4/8z4v ftp://data.pdbj.org/pub/pdb/validation_reports/z4/8z4v | HTTPS FTP |
-Related structure data
Related structure data | 39770MC M: map data used to model this data C: citing same article (ref.) |
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Similar structure data | Similarity search - Function & homologyF&H Search |
-Links
-Assembly
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Noncrystallographic symmetry (NCS) | NCS domain:
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