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Yorodumi- EMDB-32463: Right PSI in the cyclic electron transfer supercomplex NDH-PSI fr... -
+Open data
-Basic information
Entry | Database: EMDB / ID: EMD-32463 | ||||||||||||||||||
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Title | Right PSI in the cyclic electron transfer supercomplex NDH-PSI from Arabidopsis | ||||||||||||||||||
Map data | |||||||||||||||||||
Sample |
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Keywords | Cylic electron trasport / supercomplex / Arabidopsis / plant / ELECTRON TRANSPORT | ||||||||||||||||||
Function / homology | Function and homology information photosystem I antenna complex / photosynthetic NADP+ reduction / photosystem I stabilization / chloroplast stromal thylakoid / chloroplast photosystem I / response to low light intensity stimulus / pigment binding / chloroplast membrane / response to high light intensity / plastoglobule ...photosystem I antenna complex / photosynthetic NADP+ reduction / photosystem I stabilization / chloroplast stromal thylakoid / chloroplast photosystem I / response to low light intensity stimulus / pigment binding / chloroplast membrane / response to high light intensity / plastoglobule / chloroplast thylakoid / photosynthesis, light harvesting in photosystem I / photosystem I reaction center / chloroplast envelope / photosystem I / photosynthetic electron transport in photosystem I / thylakoid / photosystem I / plastid / chloroplast thylakoid membrane / chlorophyll binding / photosynthesis / response to cold / chloroplast / 4 iron, 4 sulfur cluster binding / electron transfer activity / protein stabilization / oxidoreductase activity / protein domain specific binding / mRNA binding / magnesium ion binding / protein homodimerization activity / extracellular region / nucleus / metal ion binding / plasma membrane / cytosol Similarity search - Function | ||||||||||||||||||
Biological species | Arabidopsis thaliana (thale cress) | ||||||||||||||||||
Method | single particle reconstruction / cryo EM / Resolution: 3.25 Å | ||||||||||||||||||
Authors | Pan XW / Li M | ||||||||||||||||||
Funding support | China, 5 items
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Citation | Journal: Mol Plant / Year: 2022 Title: Supramolecular assembly of chloroplast NADH dehydrogenase-like complex with photosystem I from Arabidopsis thaliana. Authors: Xiaodong Su / Duanfang Cao / Xiaowei Pan / Lifang Shi / Zhenfeng Liu / Luca Dall'Osto / Roberto Bassi / Xinzheng Zhang / Mei Li / Abstract: Cyclic electron transport/flow (CET/CEF) in chloroplasts is a regulatory process essential for the optimization of plant photosynthetic efficiency. A crucial CEF pathway is catalyzed by a membrane- ...Cyclic electron transport/flow (CET/CEF) in chloroplasts is a regulatory process essential for the optimization of plant photosynthetic efficiency. A crucial CEF pathway is catalyzed by a membrane-embedded NADH dehydrogenase-like (NDH) complex that contains at least 29 protein subunits and associates with photosystem I (PSI) to form the NDH-PSI supercomplex. Here, we report the 3.9 Å resolution structure of the Arabidopsis thaliana NDH-PSI (AtNDH-PSI) supercomplex. We constructed structural models for 26 AtNDH subunits, among which 11 are unique to chloroplasts and stabilize the core part of the NDH complex. In the supercomplex, one NDH can bind up to two PSI-light-harvesting complex I (PSI-LHCI) complexes at both sides of its membrane arm. Two minor LHCIs, Lhca5 and Lhca6, each present in one PSI-LHCI, interact with NDH and contribute to supercomplex formation and stabilization. Collectively, our study reveals the structural details of the AtNDH-PSI supercomplex assembly and provides a molecular basis for further investigation of the regulatory mechanism of CEF in plants. | ||||||||||||||||||
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_32463.map.gz | 226.8 MB | EMDB map data format | |
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Header (meta data) | emd-32463-v30.xml emd-32463.xml | 31.2 KB 31.2 KB | Display Display | EMDB header |
Images | emd_32463.png | 50.8 KB | ||
Filedesc metadata | emd-32463.cif.gz | 8.9 KB | ||
Archive directory | http://ftp.pdbj.org/pub/emdb/structures/EMD-32463 ftp://ftp.pdbj.org/pub/emdb/structures/EMD-32463 | HTTPS FTP |
-Validation report
Summary document | emd_32463_validation.pdf.gz | 571.9 KB | Display | EMDB validaton report |
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Full document | emd_32463_full_validation.pdf.gz | 571.4 KB | Display | |
Data in XML | emd_32463_validation.xml.gz | 6.8 KB | Display | |
Data in CIF | emd_32463_validation.cif.gz | 7.9 KB | Display | |
Arichive directory | https://ftp.pdbj.org/pub/emdb/validation_reports/EMD-32463 ftp://ftp.pdbj.org/pub/emdb/validation_reports/EMD-32463 | HTTPS FTP |
-Related structure data
Related structure data | 7wfeMC 7wfdC 7wffC 7wfgC 7wg5C 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_32463.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: 1.04 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 : PSI complex in the NDH-PSI supercomplex of Arabidopsis
+Supramolecule #1: PSI complex in the NDH-PSI supercomplex of Arabidopsis
+Macromolecule #1: Photosystem I P700 chlorophyll a apoprotein A1
+Macromolecule #2: Photosystem I P700 chlorophyll a apoprotein A2
+Macromolecule #3: Photosystem I iron-sulfur center
+Macromolecule #4: Photosystem I reaction center subunit II-2, chloroplastic
+Macromolecule #5: Photosystem I reaction center subunit IV A, chloroplastic
+Macromolecule #6: Photosystem I reaction center subunit III, chloroplastic
+Macromolecule #7: Photosystem I reaction center subunit V, chloroplastic
+Macromolecule #8: Photosystem I reaction center subunit VI-2, chloroplastic
+Macromolecule #9: Photosystem I reaction center subunit VIII
+Macromolecule #10: Photosystem I reaction center subunit IX
+Macromolecule #11: Photosystem I reaction center subunit psaK, chloroplastic
+Macromolecule #12: Photosystem I reaction center subunit XI, chloroplastic
+Macromolecule #13: Chlorophyll a-b binding protein 6, chloroplastic
+Macromolecule #14: Photosystem I chlorophyll a/b-binding protein 2, chloroplastic
+Macromolecule #15: Photosystem I chlorophyll a/b-binding protein 3-1, chloroplastic
+Macromolecule #16: Photosystem I chlorophyll a/b-binding protein 5, chloroplastic
+Macromolecule #17: CHLOROPHYLL A
+Macromolecule #18: PHYLLOQUINONE
+Macromolecule #19: 1,2-DIPALMITOYL-PHOSPHATIDYL-GLYCEROLE
+Macromolecule #20: BETA-CAROTENE
+Macromolecule #21: IRON/SULFUR CLUSTER
+Macromolecule #22: DODECYL-ALPHA-D-MALTOSIDE
+Macromolecule #23: DIGALACTOSYL DIACYL GLYCEROL (DGDG)
+Macromolecule #24: 1,2-DI-O-ACYL-3-O-[6-DEOXY-6-SULFO-ALPHA-D-GLUCOPYRANOSYL]-SN-GLYCEROL
+Macromolecule #25: CHLOROPHYLL B
+Macromolecule #26: (3R,3'R,6S)-4,5-DIDEHYDRO-5,6-DIHYDRO-BETA,BETA-CAROTENE-3,3'-DIOL
+Macromolecule #27: (3S,5R,6S,3'S,5'R,6'S)-5,6,5',6'-DIEPOXY-5,6,5',6'- TETRAHYDRO-BE...
+Macromolecule #28: 1,2-DISTEAROYL-MONOGALACTOSYL-DIGLYCERIDE
-Experimental details
-Structure determination
Method | cryo EM |
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Processing | single particle reconstruction |
Aggregation state | particle |
-Sample preparation
Buffer | pH: 7.8 |
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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 QUANTUM (4k x 4k) / Average electron dose: 60.0 e/Å2 |
Electron beam | Acceleration voltage: 300 kV / Electron source: FIELD EMISSION GUN |
Electron optics | Illumination mode: FLOOD BEAM / Imaging mode: BRIGHT FIELD / Nominal defocus max: 2.5 µm / Nominal defocus min: 1.5 µm |
Experimental equipment | Model: Titan Krios / Image courtesy: FEI Company |
-Image processing
Startup model | Type of model: PDB ENTRY PDB model - PDB ID: |
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Final reconstruction | Resolution.type: BY AUTHOR / Resolution: 3.25 Å / Resolution method: FSC 0.143 CUT-OFF / Number images used: 136022 |
Initial angle assignment | Type: PROJECTION MATCHING |
Final angle assignment | Type: PROJECTION MATCHING |