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- EMDB-60830: Cryo-EM structure of a TEF30-associated intermediate C2S-type PSI... -
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Basic information
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Title | Cryo-EM structure of a TEF30-associated intermediate C2S-type PSII-LHCII supercomplex from Chlamydomonas reinhardtii | |||||||||
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![]() | photosystem II / PSII repair / PSII assembly / PSII intermediate / TEF30 / C2S / supercomplex / PHOTOSYNTHESIS | |||||||||
Function / homology | ![]() thylakoid light-harvesting complex / photosynthesis, light harvesting in photosystem I / photosynthesis, light harvesting / photosystem II oxygen evolving complex / photosystem II assembly / 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 ...thylakoid light-harvesting complex / photosynthesis, light harvesting in photosystem I / photosynthesis, light harvesting / photosystem II oxygen evolving complex / photosystem II assembly / 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 / photosystem I / photosystem II / response to herbicide / chlorophyll binding / photosynthetic electron transport in photosystem II / photosynthesis, light reaction / chloroplast thylakoid membrane / phosphate ion binding / : / response to light stimulus / photosynthesis / electron transfer activity / protein stabilization / iron ion binding / heme binding / metal ion binding Similarity search - Function | |||||||||
Biological species | ![]() ![]() | |||||||||
Method | single particle reconstruction / cryo EM / Resolution: 2.9 Å | |||||||||
![]() | Wang Y / Wang C / Li A / Liu Z | |||||||||
Funding support | ![]()
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![]() | ![]() Title: Roles of multiple TEF30-associated intermediate complexes in the repair and reassembly of photosystem II in Chlamydomonas reinhardtii. Authors: Yidi Wang / Chenxi Wang / Anjie Li / Zhenfeng Liu / ![]() Abstract: During oxygenic photosynthesis, photosystem II (PSII) uses light energy for oxidizing water and reducing plastoquinone. It is susceptible to photodamage, and the damaged PSII is repaired through a ...During oxygenic photosynthesis, photosystem II (PSII) uses light energy for oxidizing water and reducing plastoquinone. It is susceptible to photodamage, and the damaged PSII is repaired through a sophisticated biological process assisted by numerous auxiliary proteins. Here we report the cryogenic electron microscopy structures of four PSII-repair complexes from Chlamydomonas reinhardtii associated with the Thylakoid Enriched Fraction 30 (TEF30, an orthologue of plant MET1) protein-namely, a TEF30-PSII core monomer (TEF30-C), two types of TEF30-PSII core dimers (types I and II, TEF30-C-I and TEF30-C-II) and a TEF30-CS-type PSII-LHCII supercomplex (TEF30-CS; S, strongly associated light-harvesting complex II trimer). TEF30 mediates the assembly of CP43 with the RC47 module by clamping on the stromal surfaces and prevents the premature association of peripheral antennae with PSII-C. In the transition from TEF30-C-I to TEF30-C-II, TEF30-CS and mature CS, one PSII core slides along the dimerization interface against the adjacent one by 22-35 Å, generating a zigzagged surface for accommodating the peripheral antennae. These results suggest that the PSII repair process undergoes multiple TEF30-mediated intermediate states to form intact PSII-LHCII supercomplexes. | |||||||||
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Structure visualization
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Downloads & links
-EMDB archive
Map data | ![]() | 119.7 MB | ![]() | |
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Header (meta data) | ![]() ![]() | 41.4 KB 41.4 KB | Display Display | ![]() |
Images | ![]() | 160.6 KB | ||
Filedesc metadata | ![]() | 10.1 KB | ||
Archive directory | ![]() ![]() | HTTPS FTP |
-Validation report
Summary document | ![]() | 562.4 KB | Display | ![]() |
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Full document | ![]() | 561.9 KB | Display | |
Data in XML | ![]() | 7.5 KB | Display | |
Data in CIF | ![]() | 8.7 KB | Display | |
Arichive directory | ![]() ![]() | HTTPS FTP |
-Related structure data
Related structure data | ![]() 9is4MC ![]() 9iiuC ![]() 9imnC ![]() 9ioxC M: atomic model generated by this map C: citing same article ( |
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Similar structure data | Similarity search - Function & homology ![]() |
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Links
EMDB pages | ![]() ![]() |
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Related items in Molecule of the Month |
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Map
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Projections & slices | Image control
Images are generated by Spider. | ||||||||||||||||||||||||||||||||||||
Voxel size | X=Y=Z: 1.06 Å | ||||||||||||||||||||||||||||||||||||
Density |
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Symmetry | Space group: 1 | ||||||||||||||||||||||||||||||||||||
Details | EMDB XML:
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-Supplemental data
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Sample components
+Entire : TEF30-associated C2S-type PSII-LHCII supercomplex
+Supramolecule #1: TEF30-associated C2S-type PSII-LHCII supercomplex
+Macromolecule #1: PDZ domain-containing protein
+Macromolecule #2: Photosystem II protein D1
+Macromolecule #3: Photosystem II CP47 reaction center protein
+Macromolecule #4: Photosystem II CP43 reaction center protein
+Macromolecule #5: Photosystem II D2 protein
+Macromolecule #6: Cytochrome b559 subunit alpha
+Macromolecule #7: Cytochrome b559 subunit beta
+Macromolecule #8: Chlorophyll a-b binding protein, chloroplastic
+Macromolecule #9: Photosystem II reaction center protein H
+Macromolecule #10: Photosystem II reaction center protein I
+Macromolecule #11: Photosystem II reaction center protein K
+Macromolecule #12: Photosystem II reaction center protein L
+Macromolecule #13: Photosystem II reaction center protein M
+Macromolecule #14: Chlorophyll a-b binding protein, chloroplastic
+Macromolecule #15: Oxygen-evolving enhancer protein 1, chloroplastic
+Macromolecule #16: Chlorophyll a-b binding protein, chloroplastic
+Macromolecule #17: Photosystem II reaction center protein T
+Macromolecule #18: Photosystem II reaction center protein Psb30
+Macromolecule #19: Photosystem II reaction center W protein, chloroplastic
+Macromolecule #20: Chloroplast photosystem II subunit X
+Macromolecule #21: Chlorophyll a-b binding protein, chloroplastic
+Macromolecule #22: Photosystem II reaction center protein Z
+Macromolecule #23: Chlorophyll a-b binding protein CP29
+Macromolecule #24: FE (II) ION
+Macromolecule #25: CHLOROPHYLL A
+Macromolecule #26: PHEOPHYTIN A
+Macromolecule #27: BETA-CAROTENE
+Macromolecule #28: 1,2-DI-O-ACYL-3-O-[6-DEOXY-6-SULFO-ALPHA-D-GLUCOPYRANOSYL]-SN-GLYCEROL
+Macromolecule #29: 1,2-DISTEAROYL-MONOGALACTOSYL-DIGLYCERIDE
+Macromolecule #30: 1,2-DIPALMITOYL-PHOSPHATIDYL-GLYCEROLE
+Macromolecule #31: DIGALACTOSYL DIACYL GLYCEROL (DGDG)
+Macromolecule #32: DODECYL-ALPHA-D-MALTOSIDE
+Macromolecule #33: BICARBONATE ION
+Macromolecule #34: 2,3-DIMETHYL-5-(3,7,11,15,19,23,27,31,35-NONAMETHYL-2,6,10,14,18,...
+Macromolecule #35: PROTOPORPHYRIN IX CONTAINING FE
+Macromolecule #36: CHLOROPHYLL B
+Macromolecule #37: (3R,3'R,6S)-4,5-DIDEHYDRO-5,6-DIHYDRO-BETA,BETA-CAROTENE-3,3'-DIOL
+Macromolecule #38: (1R,3R)-6-{(3E,5E,7E,9E,11E,13E,15E,17E)-18-[(1S,4R,6R)-4-HYDROXY...
+Macromolecule #39: (3S,5R,6S,3'S,5'R,6'S)-5,6,5',6'-DIEPOXY-5,6,5',6'- TETRAHYDRO-BE...
-Experimental details
-Structure determination
Method | cryo EM |
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![]() | single particle reconstruction |
Aggregation state | particle |
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Sample preparation
Buffer | pH: 7.2 |
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Vitrification | Cryogen name: ETHANE |
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Electron microscopy
Microscope | FEI TITAN KRIOS |
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Image recording | Film or detector model: GATAN K3 (6k x 4k) / Average electron dose: 50.0 e/Å2 |
Electron beam | Acceleration voltage: 300 kV / Electron source: ![]() |
Electron optics | Illumination mode: FLOOD BEAM / Imaging mode: BRIGHT FIELD / Nominal defocus max: 1.8 µm / Nominal defocus min: 1.3 µm |
Experimental equipment | ![]() Model: Titan Krios / Image courtesy: FEI Company |