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Yorodumi- EMDB-30935: LHCII-2 in the state transition supercomplex PSI-LHCI-LHCII from ... -
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Open data
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Basic information
| Entry | Database: EMDB / ID: EMD-30935 | |||||||||||||||||||||||||||
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| Title | LHCII-2 in the state transition supercomplex PSI-LHCI-LHCII from the double phosphatase mutant pph1;pbcp of Chlamydomonas reinhardti. | |||||||||||||||||||||||||||
 Map data | Local refined map of LHCII-2 in the PSI-LHCI-LHCII supercomplex from pph1;pbcp mutant of Chlamydomonas reinhardtii | |||||||||||||||||||||||||||
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 Keywords | Supercomplex / LHCII / state transition / green alga / Chlamydomonas reinhardtii / PHOTOSYNTHESIS | |||||||||||||||||||||||||||
| Function / homology |  Function and homology informationphotosynthesis, light harvesting in photosystem I / photosystem I / photosystem II / chlorophyll binding / chloroplast thylakoid membrane / response to light stimulus Similarity search - Function  | |||||||||||||||||||||||||||
| Biological species | ![]()  | |||||||||||||||||||||||||||
| Method | single particle reconstruction / cryo EM / Resolution: 3.09 Å | |||||||||||||||||||||||||||
 Authors | Pan XW / Li AJ | |||||||||||||||||||||||||||
| Funding support |   China,   Japan, 8 items 
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 Citation |  Journal: Nat Plants / Year: 2021Title: Structural basis of LhcbM5-mediated state transitions in green algae. Authors: Xiaowei Pan / Ryutaro Tokutsu / Anjie Li / Kenji Takizawa / Chihong Song / Kazuyoshi Murata / Tomohito Yamasaki / Zhenfeng Liu / Jun Minagawa / Mei Li /   ![]() Abstract: In green algae and plants, state transitions serve as a short-term light-acclimation process in the regulation of the light-harvesting capacity of photosystems I and II (PSI and PSII, respectively). ...In green algae and plants, state transitions serve as a short-term light-acclimation process in the regulation of the light-harvesting capacity of photosystems I and II (PSI and PSII, respectively). During the process, a portion of light-harvesting complex II (LHCII) is phosphorylated, dissociated from PSII and binds with PSI to form the supercomplex PSI-LHCI-LHCII. Here, we report high-resolution structures of PSI-LHCI-LHCII from Chlamydomonas reinhardtii, revealing the mechanism of assembly between the PSI-LHCI complex and two phosphorylated LHCII trimers containing all four types of LhcbM protein. Two specific LhcbM isoforms, namely LhcbM1 and LhcbM5, directly interact with the PSI core through their phosphorylated amino terminal regions. Furthermore, biochemical and functional studies on mutant strains lacking either LhcbM1 or LhcbM5 indicate that only LhcbM5 is indispensable in supercomplex formation. The results unravel the specific interactions and potential excitation energy transfer routes between green algal PSI and two phosphorylated LHCIIs.  | |||||||||||||||||||||||||||
| History | 
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Structure visualization
| Movie | 
 
 
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| Structure viewer | EM map:  SurfView Molmil Jmol/JSmol | 
| Supplemental images | 
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Downloads & links
-EMDB archive
| Map data |  emd_30935.map.gz | 22.6 MB |  EMDB map data format | |
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| Header (meta data) |  emd-30935-v30.xml emd-30935.xml | 21 KB 21 KB  | Display Display  |  EMDB header | 
| Images |  emd_30935.png | 335.5 KB | ||
| Filedesc metadata |  emd-30935.cif.gz | 6.7 KB | ||
| Archive directory |  http://ftp.pdbj.org/pub/emdb/structures/EMD-30935 ftp://ftp.pdbj.org/pub/emdb/structures/EMD-30935 | HTTPS FTP  | 
-Validation report
| Summary document |  emd_30935_validation.pdf.gz | 318.5 KB | Display |  EMDB validaton report | 
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| Full document |  emd_30935_full_validation.pdf.gz | 317.9 KB | Display | |
| Data in XML |  emd_30935_validation.xml.gz | 6.3 KB | Display | |
| Data in CIF |  emd_30935_validation.cif.gz | 7.5 KB | Display | |
| Arichive directory |  https://ftp.pdbj.org/pub/emdb/validation_reports/EMD-30935 ftp://ftp.pdbj.org/pub/emdb/validation_reports/EMD-30935 | HTTPS FTP  | 
-Related structure data
| Related structure data | ![]() 7e0kMC ![]() 7dz7C ![]() 7dz8C ![]() 7e0hC ![]() 7e0iC ![]() 7e0jC 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_30935.map.gz / Format: CCP4 / Size: 421.9 MB / Type: IMAGE STORED AS FLOATING POINT NUMBER (4 BYTES) | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
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| Annotation | Local refined map of LHCII-2 in the PSI-LHCI-LHCII supercomplex from pph1;pbcp mutant of Chlamydomonas reinhardtii | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Projections & slices | Image control
 
 Images are generated by Spider.  | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Voxel size | X=Y=Z: 1 Å | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Density | 
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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 : LHCII-2 in the state transition complex PSI-LHCI-LHCII from pph1;...
+Supramolecule #1: LHCII-2 in the state transition complex PSI-LHCI-LHCII from pph1;...
+Macromolecule #1: Chlorophyll a-b binding protein, chloroplastic
+Macromolecule #2: Chlorophyll a-b binding protein, chloroplastic
+Macromolecule #3: Chlorophyll a-b binding protein, chloroplastic
+Macromolecule #4: CHLOROPHYLL B
+Macromolecule #5: CHLOROPHYLL A
+Macromolecule #6: (3R,3'R,6S)-4,5-DIDEHYDRO-5,6-DIHYDRO-BETA,BETA-CAROTENE-3,3'-DIOL
+Macromolecule #7: (3S,5R,6S,3'S,5'R,6'S)-5,6,5',6'-DIEPOXY-5,6,5',6'- TETRAHYDRO-BE...
+Macromolecule #8: (1R,3R)-6-{(3E,5E,7E,9E,11E,13E,15E,17E)-18-[(1S,4R,6R)-4-HYDROXY...
+Macromolecule #9: 1,2-DIPALMITOYL-PHOSPHATIDYL-GLYCEROLE
+Macromolecule #10: 1,2-DISTEAROYL-MONOGALACTOSYL-DIGLYCERIDE
-Experimental details
-Structure determination
| Method | cryo EM | 
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 Processing | single particle reconstruction | 
| Aggregation state | particle | 
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Sample preparation
| Buffer | pH: 6.5 | 
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| Vitrification | Cryogen name: ETHANE | 
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Electron microscopy
| Microscope | FEI TALOS ARCTICA | 
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| Image recording | Film or detector model: GATAN K2 SUMMIT (4k x 4k) / Average electron dose: 1.5625 e/Å2 | 
| Electron beam | Acceleration voltage: 200 kV / Electron source:  FIELD EMISSION GUN | 
| Electron optics | Illumination mode: FLOOD BEAM / Imaging mode: BRIGHT FIELD | 
| Experimental equipment | ![]() Model: Talos Arctica / Image courtesy: FEI Company  | 
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Keywords
Authors
China,  
Japan, 8 items 
Citation
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