+Open data
-Basic information
Entry | Database: EMDB / ID: EMD-30909 | |||||||||
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Title | Cryo-EM structure of PSII intermediate Psb28-PSII complex | |||||||||
Map data | ||||||||||
Sample |
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Keywords | Photosystem II / Cryo-EM / assembly / repair / Psb28 / Tsl0063 / PLANT PROTEIN | |||||||||
Function / homology | Function and homology information photosystem II oxygen evolving complex / oxygen evolving activity / photosystem II stabilization / photosystem II reaction center / photosystem II / oxidoreductase activity, acting on diphenols and related substances as donors, oxygen as acceptor / photosynthetic electron transport chain / response to herbicide / photosystem II / photosynthesis, light reaction ...photosystem II oxygen evolving complex / oxygen evolving activity / photosystem II stabilization / photosystem II reaction center / photosystem II / oxidoreductase activity, acting on diphenols and related substances as donors, oxygen as acceptor / photosynthetic electron transport chain / response to herbicide / photosystem II / photosynthesis, light reaction / phosphate ion binding / photosynthetic electron transport in photosystem II / chlorophyll binding / plasma membrane-derived thylakoid membrane / electron transporter, transferring electrons within the cyclic electron transport pathway of photosynthesis activity / photosynthesis / electron transfer activity / protein stabilization / iron ion binding / heme binding / metal ion binding Similarity search - Function | |||||||||
Biological species | Thermosynechococcus vulcanus (bacteria) | |||||||||
Method | single particle reconstruction / cryo EM / Resolution: 3.14 Å | |||||||||
Authors | Sui SF / Shen JR | |||||||||
Citation | Journal: Nat Plants / Year: 2021 Title: Structural insights into cyanobacterial photosystem II intermediates associated with Psb28 and Tsl0063. Authors: Yanan Xiao / Guoqiang Huang / Xin You / Qingjun Zhu / Wenda Wang / Tingyun Kuang / Guangye Han / Sen-Fang Sui / Jian-Ren Shen / Abstract: Photosystem II (PSII) is a multisubunit pigment-protein complex and catalyses light-induced water oxidation, leading to the conversion of light energy into chemical energy and the release of dioxygen. ...Photosystem II (PSII) is a multisubunit pigment-protein complex and catalyses light-induced water oxidation, leading to the conversion of light energy into chemical energy and the release of dioxygen. We analysed the structures of two Psb28-bound PSII intermediates, Psb28-RC47 and Psb28-PSII, purified from a psbV-deletion strain of the thermophilic cyanobacterium Thermosynechococcus vulcanus, using cryo-electron microscopy. Both Psb28-RC47 and Psb28-PSII bind one Psb28, one Tsl0063 and an unknown subunit. Psb28 is located at the cytoplasmic surface of PSII and interacts with D1, D2 and CP47, whereas Tsl0063 is a transmembrane subunit and binds at the side of CP47/PsbH. Substantial structural perturbations are observed at the acceptor side, which result in conformational changes of the quinone (Q) and non-haem iron binding sites and thus may protect PSII from photodamage during assembly. These results provide a solid structural basis for understanding the assembly process of native PSII. | |||||||||
History |
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-Structure visualization
Movie |
Movie viewer |
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Structure viewer | EM map: SurfViewMolmilJmol/JSmol |
Supplemental images |
-Downloads & links
-EMDB archive
Map data | emd_30909.map.gz | 3.6 MB | EMDB map data format | |
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Header (meta data) | emd-30909-v30.xml emd-30909.xml | 29.8 KB 29.8 KB | Display Display | EMDB header |
Images | emd_30909.png | 32.3 KB | ||
Filedesc metadata | emd-30909.cif.gz | 7.7 KB | ||
Archive directory | http://ftp.pdbj.org/pub/emdb/structures/EMD-30909 ftp://ftp.pdbj.org/pub/emdb/structures/EMD-30909 | HTTPS FTP |
-Validation report
Summary document | emd_30909_validation.pdf.gz | 405.2 KB | Display | EMDB validaton report |
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Full document | emd_30909_full_validation.pdf.gz | 404.8 KB | Display | |
Data in XML | emd_30909_validation.xml.gz | 5.7 KB | Display | |
Data in CIF | emd_30909_validation.cif.gz | 6.4 KB | Display | |
Arichive directory | https://ftp.pdbj.org/pub/emdb/validation_reports/EMD-30909 ftp://ftp.pdbj.org/pub/emdb/validation_reports/EMD-30909 | HTTPS FTP |
-Related structure data
Related structure data | 7dxhMC 7dxaC M: atomic model generated by this map C: citing same article (ref.) |
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Similar structure data |
-Links
EMDB pages | EMDB (EBI/PDBe) / EMDataResource |
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Related items in Molecule of the Month |
-Map
File | Download / File: emd_30909.map.gz / Format: CCP4 / Size: 30.5 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: 1.30654 Å | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
Density |
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Symmetry | Space group: 1 | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
Details | EMDB XML:
CCP4 map header:
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-Supplemental data
-Sample components
+Entire : Cryo-EM structure of PSII intermediate Psb28-PSII complex.
+Supramolecule #1: Cryo-EM structure of PSII intermediate Psb28-PSII complex.
+Macromolecule #1: Photosystem II reaction center Psb28 protein
+Macromolecule #2: Tsl0063 protein
+Macromolecule #3: Photosystem II protein D1
+Macromolecule #4: Photosystem II CP47 reaction center protein
+Macromolecule #5: Photosystem II D2 protein
+Macromolecule #6: Cytochrome b559 subunit alpha
+Macromolecule #7: Cytochrome b559 subunit beta
+Macromolecule #8: Photosystem II reaction center protein H
+Macromolecule #9: Photosystem II reaction center protein I
+Macromolecule #10: Photosystem II reaction center protein L
+Macromolecule #11: Photosystem II reaction center protein M
+Macromolecule #12: Photosystem II reaction center protein T
+Macromolecule #13: Photosystem II reaction center protein X
+Macromolecule #14: Photosystem II CP43 reaction center protein
+Macromolecule #15: Photosystem II reaction center protein K
+Macromolecule #16: Photosystem II reaction center protein Z
+Macromolecule #17: Photosystem II reaction center protein Ycf12
+Macromolecule #18: unidentified transmembrane protein
+Macromolecule #19: (1S)-2-(ALPHA-L-ALLOPYRANOSYLOXY)-1-[(TRIDECANOYLOXY)METHYL]ETHYL...
+Macromolecule #20: 1,2-DI-O-ACYL-3-O-[6-DEOXY-6-SULFO-ALPHA-D-GLUCOPYRANOSYL]-SN-GLYCEROL
+Macromolecule #21: CHLOROPHYLL A
+Macromolecule #22: BETA-CAROTENE
+Macromolecule #23: CHLORIDE ION
+Macromolecule #24: DIGALACTOSYL DIACYL GLYCEROL (DGDG)
+Macromolecule #25: PHEOPHYTIN A
+Macromolecule #26: DODECYL-BETA-D-MALTOSIDE
+Macromolecule #27: FE (II) ION
+Macromolecule #28: 5-[(2E,6E,10E,14E,18E,22E)-3,7,11,15,19,23,27-HEPTAMETHYLOCTACOSA...
+Macromolecule #29: UNKNOWN LIGAND
+Macromolecule #30: PROTOPORPHYRIN IX CONTAINING FE
+Macromolecule #31: heptyl 1-thio-beta-D-glucopyranoside
-Experimental details
-Structure determination
Method | cryo EM |
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Processing | single particle reconstruction |
Aggregation state | particle |
-Sample preparation
Buffer | pH: 6.5 |
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Vitrification | Cryogen name: ETHANE |
-Electron microscopy
Microscope | FEI TITAN KRIOS |
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Image recording | Film or detector model: GATAN K2 SUMMIT (4k x 4k) / Average electron dose: 50.0 e/Å2 |
Electron beam | Acceleration voltage: 300 kV / Electron source: FIELD EMISSION GUN |
Electron optics | Illumination mode: FLOOD BEAM / Imaging mode: BRIGHT FIELD |
Experimental equipment | Model: Titan Krios / Image courtesy: FEI Company |
-Image processing
Startup model | Type of model: PDB ENTRY |
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Final reconstruction | Resolution.type: BY AUTHOR / Resolution: 3.14 Å / Resolution method: FSC 0.143 CUT-OFF / Number images used: 194738 |
Initial angle assignment | Type: MAXIMUM LIKELIHOOD |
Final angle assignment | Type: MAXIMUM LIKELIHOOD |