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Yorodumi- EMDB-32464: Subcomplexes B,M and L in the Cylic electron transfer supercomple... -
+Open data
-Basic information
Entry | Database: EMDB / ID: EMD-32464 | ||||||||||||||||||
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Title | Subcomplexes B,M and L in the Cylic electron transfer supercomplex NDH-PSI from Arabidopsis | ||||||||||||||||||
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Sample |
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Function / homology | Function and homology information NAD(P)H dehydrogenase complex assembly / nitrite reductase complex [NAD(P)H] / NAD(P)H dehydrogenase complex (plastoquinone) / glucose-6-phosphate 1-epimerase activity / chloroplast stromal thylakoid / thylakoid lumen / protein histidine kinase binding / chloroplast membrane / P450-containing electron transport chain / chloroplast thylakoid ...NAD(P)H dehydrogenase complex assembly / nitrite reductase complex [NAD(P)H] / NAD(P)H dehydrogenase complex (plastoquinone) / glucose-6-phosphate 1-epimerase activity / chloroplast stromal thylakoid / thylakoid lumen / protein histidine kinase binding / chloroplast membrane / P450-containing electron transport chain / chloroplast thylakoid / ubiquinone biosynthetic process / NADPH dehydrogenase activity / chloroplast thylakoid lumen / Translocases; Catalysing the translocation of protons; Linked to oxidoreductase reactions / photosystem II oxygen evolving complex / photosynthetic electron transport in photosystem I / thylakoid / NADH dehydrogenase activity / photosynthetic electron transport chain / oxidoreductase activity, acting on NAD(P)H / oxidoreductase activity, acting on NAD(P)H, quinone or similar compound as acceptor / electron transport coupled proton transport / plastid / cyclosporin A binding / extrinsic component of membrane / chloroplast thylakoid membrane / photosynthesis, light reaction / electron transporter, transferring electrons within the cyclic electron transport pathway of photosynthesis activity / electron transport chain / NADH dehydrogenase (ubiquinone) activity / quinone binding / ATP synthesis coupled electron transport / protein peptidyl-prolyl isomerization / aerobic respiration / photosynthesis / chloroplast / peptidylprolyl isomerase / peptidyl-prolyl cis-trans isomerase activity / 2 iron, 2 sulfur cluster binding / protein folding / carbohydrate binding / response to oxidative stress / electron transfer activity / membrane => GO:0016020 / carbohydrate metabolic process / calcium ion binding / metal ion binding / nucleus / plasma membrane / cytosol / cytoplasm Similarity search - Function | ||||||||||||||||||
Biological species | Arabidopsis thaliana (thale cress) / thale cress (thale cress) | ||||||||||||||||||
Method | single particle reconstruction / cryo EM / Resolution: 3.59 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_32464.map.gz | 227.4 MB | EMDB map data format | |
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Header (meta data) | emd-32464-v30.xml emd-32464.xml | 29.1 KB 29.1 KB | Display Display | EMDB header |
Images | emd_32464.png | 73.7 KB | ||
Archive directory | http://ftp.pdbj.org/pub/emdb/structures/EMD-32464 ftp://ftp.pdbj.org/pub/emdb/structures/EMD-32464 | HTTPS FTP |
-Related structure data
Related structure data | 7wffMC 7wfdC 7wfeC 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_32464.map.gz / Format: CCP4 / Size: 244.1 MB / Type: IMAGE STORED AS FLOATING POINT NUMBER (4 BYTES) | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
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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 : Cylic electron transfer supercomplex from Arabidopsis
+Supramolecule #1: Cylic electron transfer supercomplex from Arabidopsis
+Macromolecule #1: NAD(P)H-quinone oxidoreductase subunit 1, chloroplastic
+Macromolecule #2: NAD(P)H-quinone oxidoreductase subunit 2, chloroplastic
+Macromolecule #3: NAD(P)H-quinone oxidoreductase subunit 3, chloroplastic
+Macromolecule #4: NAD(P)H-quinone oxidoreductase chain 4, chloroplastic
+Macromolecule #5: NAD(P)H-quinone oxidoreductase subunit 4L, chloroplastic
+Macromolecule #6: NAD(P)H-quinone oxidoreductase subunit 5, chloroplastic
+Macromolecule #7: NAD(P)H-quinone oxidoreductase subunit 6, chloroplastic
+Macromolecule #8: Photosynthetic NDH subunit of subcomplex B 1, chloroplastic
+Macromolecule #9: Photosynthetic NDH subunit of subcomplex B 2, chloroplastic
+Macromolecule #10: Photosynthetic NDH subunit of subcomplex B 3, chloroplastic
+Macromolecule #11: NDH dependent flow 6
+Macromolecule #12: Photosynthetic NDH subunit of subcomplex B 5, chloroplastic
+Macromolecule #13: Photosynthetic NDH subunit of lumenal location 1, chloroplastic
+Macromolecule #14: Photosynthetic NDH subunit of lumenal location 2, chloroplastic
+Macromolecule #15: Photosynthetic NDH subunit of lumenal location 3, chloroplastic
+Macromolecule #16: Photosynthetic NDH subunit of lumenal location 4, chloroplastic
+Macromolecule #17: Isoform 2 of Photosynthetic NDH subunit of lumenal location 5, ch...
+Macromolecule #18: 1,2-DIPALMITOYL-PHOSPHATIDYL-GLYCEROLE
+Macromolecule #19: 1,2-DI-O-ACYL-3-O-[6-DEOXY-6-SULFO-ALPHA-D-GLUCOPYRANOSYL]-SN-GLYCEROL
+Macromolecule #20: FE2/S2 (INORGANIC) CLUSTER
-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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Electron beam | Acceleration voltage: 300 kV / Electron source: FIELD EMISSION GUN |
Electron optics | Illumination mode: FLOOD BEAM / Imaging mode: BRIGHT FIELDBright-field microscopy / Nominal defocus max: 2.5 µm / Nominal defocus min: 1.5 µm |
Image recording | Film or detector model: GATAN K2 SUMMIT (4k x 4k) / Detector mode: SUPER-RESOLUTION / Average electron dose: 60.0 e/Å2 |
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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Initial angle assignment | Type: PROJECTION MATCHING |
Final angle assignment | Type: PROJECTION MATCHING |
Final reconstruction | Resolution.type: BY AUTHOR / Resolution: 3.59 Å / Resolution method: FSC 0.143 CUT-OFF / Number images used: 136022 |