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Yorodumi- EMDB-30314: STRUCTURE OF PHOTOSYNTHETIC LH1-RC SUPER-COMPLEX OF THIORHODOVIBR... -
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Open data
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Basic information
| Entry | Database: EMDB / ID: EMD-30314 | |||||||||||||||||||||
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| Title | STRUCTURE OF PHOTOSYNTHETIC LH1-RC SUPER-COMPLEX OF THIORHODOVIBRIO STRAIN 970 | |||||||||||||||||||||
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Keywords | LH1-RC / PHOTOSYNTHESIS / PURPLE BACTERIA | |||||||||||||||||||||
| Function / homology | Function and homology informationplasma membrane-derived chromatophore membrane / plasma membrane light-harvesting complex / bacteriochlorophyll binding / photosynthetic electron transport in photosystem II / photosynthesis, light reaction / endomembrane system / electron transfer activity / iron ion binding / heme binding / metal ion binding ...plasma membrane-derived chromatophore membrane / plasma membrane light-harvesting complex / bacteriochlorophyll binding / photosynthetic electron transport in photosystem II / photosynthesis, light reaction / endomembrane system / electron transfer activity / iron ion binding / heme binding / metal ion binding / membrane / plasma membrane Similarity search - Function | |||||||||||||||||||||
| Biological species | Thiorhodovibrio sp. 970 (bacteria) | |||||||||||||||||||||
| Method | single particle reconstruction / cryo EM / Resolution: 2.82 Å | |||||||||||||||||||||
Authors | Tani K / Kanno R | |||||||||||||||||||||
| Funding support | Japan, 6 items
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Citation | Journal: Nat Commun / Year: 2020Title: 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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Structure visualization
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| Structure viewer | EM map: SurfView Molmil Jmol/JSmol |
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Downloads & links
-EMDB archive
| Map data | emd_30314.map.gz | 229.1 MB | EMDB map data format | |
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| Header (meta data) | emd-30314-v30.xml emd-30314.xml | 31.6 KB 31.6 KB | Display Display | EMDB header |
| FSC (resolution estimation) | emd_30314_fsc.xml | 14 KB | Display | FSC data file |
| Images | emd_30314.png | 192.8 KB | ||
| Filedesc metadata | emd-30314.cif.gz | 8.9 KB | ||
| Archive directory | http://ftp.pdbj.org/pub/emdb/structures/EMD-30314 ftp://ftp.pdbj.org/pub/emdb/structures/EMD-30314 | HTTPS FTP |
-Validation report
| Summary document | emd_30314_validation.pdf.gz | 643.8 KB | Display | EMDB validaton report |
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| Full document | emd_30314_full_validation.pdf.gz | 643.3 KB | Display | |
| Data in XML | emd_30314_validation.xml.gz | 13.4 KB | Display | |
| Data in CIF | emd_30314_validation.cif.gz | 18.4 KB | Display | |
| Arichive directory | https://ftp.pdbj.org/pub/emdb/validation_reports/EMD-30314 ftp://ftp.pdbj.org/pub/emdb/validation_reports/EMD-30314 | HTTPS FTP |
-Related structure data
| Related structure data | ![]() 7c9rMC M: atomic model generated by this map C: citing same article ( |
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| Similar structure data |
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Links
| EMDB pages | EMDB (EBI/PDBe) / EMDataResource |
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| Related items in Molecule of the Month |
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Map
| File | Download / File: emd_30314.map.gz / Format: CCP4 / Size: 244.1 MB / Type: IMAGE STORED AS FLOATING POINT NUMBER (4 BYTES) | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
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| Projections & slices | Image control
Images are generated by Spider. | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Voxel size | X=Y=Z: 0.84 Å | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
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| Symmetry | Space group: 1 | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Details | EMDB XML:
CCP4 map header:
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-Supplemental data
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Sample components
+Entire : light-harvesting-reaction center complex from the purple phototro...
+Supramolecule #1: light-harvesting-reaction center complex from the purple phototro...
+Macromolecule #1: Photosynthetic reaction center cytochrome c subunit
+Macromolecule #2: L subunit of the reaction center
+Macromolecule #3: Reaction center protein M chain
+Macromolecule #4: Photosynthetic reaction center, subunit H, bacterial
+Macromolecule #5: Alpha subunit 1 of light-harvesting 1 complex
+Macromolecule #6: Antenna complex alpha/beta subunit
+Macromolecule #7: Antenna complex alpha/beta subunit
+Macromolecule #8: Antenna complex alpha/beta subunit
+Macromolecule #9: LHC domain-containing protein
+Macromolecule #10: Alpha subunit 2 of light-harvesting 1 complex
+Macromolecule #11: PROTOPORPHYRIN IX CONTAINING FE
+Macromolecule #12: MAGNESIUM ION
+Macromolecule #13: CALCIUM ION
+Macromolecule #14: DIACYL GLYCEROL
+Macromolecule #15: (1R)-2-{[{[(2S)-2,3-DIHYDROXYPROPYL]OXY}(HYDROXY)PHOSPHORYL]OXY}-...
+Macromolecule #16: BACTERIOCHLOROPHYLL A
+Macromolecule #17: BACTERIOPHEOPHYTIN A
+Macromolecule #18: Ubiquinone-8
+Macromolecule #19: Octadecane
+Macromolecule #20: FE (III) ION
+Macromolecule #21: MENAQUINONE 8
+Macromolecule #22: CARDIOLIPIN
+Macromolecule #23: (6~{E},8~{E},10~{E},12~{E},14~{E},16~{E},18~{E},20~{E},22~{E},24~...
+Macromolecule #24: DODECYL-BETA-D-MALTOSIDE
-Experimental details
-Structure determination
| Method | cryo EM |
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Processing | single particle reconstruction |
| Aggregation state | particle |
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Sample preparation
| Concentration | 3.0 mg/mL |
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| Buffer | pH: 7.5 |
| Grid | Model: Quantifoil R2/2 / Material: MOLYBDENUM / Mesh: 200 / Pretreatment - Type: PLASMA CLEANING / Pretreatment - Time: 30 sec. / Pretreatment - Atmosphere: OTHER |
| Vitrification | Cryogen name: ETHANE / Chamber humidity: 80 % / Chamber temperature: 277 K / Instrument: LEICA EM GP |
| Details | This sample was monodisperse. |
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Electron microscopy
| Microscope | FEI TITAN KRIOS |
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| Image recording | Film or detector model: FEI FALCON III (4k x 4k) / Detector mode: COUNTING / Average exposure time: 30.6 sec. / Average electron dose: 40.0 e/Å2 |
| Electron beam | Acceleration voltage: 300 kV / Electron source: FIELD EMISSION GUN |
| Electron optics | Illumination mode: FLOOD BEAM / Imaging mode: BRIGHT FIELD |
| Sample stage | Cooling holder cryogen: NITROGEN |
| Experimental equipment | ![]() Model: Titan Krios / Image courtesy: FEI Company |
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Image processing
-Atomic model buiding 1
| Initial model | PDB ID: Chain - Source name: PDB / Chain - Initial model type: experimental model |
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| Refinement | Space: REAL / Protocol: OTHER / Overall B value: 60 / Target criteria: Correlation coefficient |
| Output model | ![]() PDB-7c9r: |
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About Yorodumi


Keywords
Thiorhodovibrio sp. 970 (bacteria)
Authors
Japan, 6 items
Citation

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