[English] 日本語

- EMDB-32477: Cyclic electron transport supercomplex NDH-PSI from Arabidopsis -
+
Open data
-
Basic information
Entry | Database: EMDB / ID: EMD-32477 | ||||||||||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
Title | Cyclic electron transport supercomplex NDH-PSI from Arabidopsis | ||||||||||||||||||
![]() | |||||||||||||||||||
![]() |
| ||||||||||||||||||
![]() | Supercomplex / PSI / NDH-PSI / plant / Arabidopsis / cyclic electron transport / ELECTRON TRANSPORT | ||||||||||||||||||
Function / homology | ![]() NAD(P)H dehydrogenase complex assembly / nitrite reductase complex [NAD(P)H] / NADH dehydrogenase complex (plastoquinone) assembly / photosystem I antenna complex / NAD(P)H dehydrogenase complex (plastoquinone) / photosynthetic NADP+ reduction / photosystem I stabilization / chloroplast photosystem I / chloroplast stromal thylakoid / cellular response to sulfate starvation ...NAD(P)H dehydrogenase complex assembly / nitrite reductase complex [NAD(P)H] / NADH dehydrogenase complex (plastoquinone) assembly / photosystem I antenna complex / NAD(P)H dehydrogenase complex (plastoquinone) / photosynthetic NADP+ reduction / photosystem I stabilization / chloroplast photosystem I / chloroplast stromal thylakoid / cellular response to sulfate starvation / thylakoid lumen / pigment binding / response to low light intensity stimulus / plastoglobule / protein histidine kinase binding / chloroplast membrane / response to high light intensity / thylakoid membrane / P450-containing electron transport chain / chloroplast thylakoid / NADPH dehydrogenase activity / photosynthesis, light harvesting in photosystem I / Translocases; Catalysing the translocation of protons; Linked to oxidoreductase reactions / thylakoid / chloroplast thylakoid lumen / photosystem II oxygen evolving complex / ubiquinone biosynthetic process / chloroplast envelope / photosystem I reaction center / photosystem I / photosynthetic electron transport in photosystem I / photosynthetic electron transport chain / photosystem I / oxidoreductase activity, acting on NAD(P)H, quinone or similar compound as acceptor / oxidoreductase activity, acting on NAD(P)H / extrinsic component of membrane / plastid / chloroplast stroma / chlorophyll binding / photosynthesis, light reaction / chloroplast thylakoid membrane / : / catalytic activity / NADH dehydrogenase activity / NADH dehydrogenase (ubiquinone) activity / defense response to fungus / quinone binding / ATP synthesis coupled electron transport / photosynthesis / response to cold / peptidyl-prolyl cis-trans isomerase activity / chloroplast / RNA polymerase II CTD heptapeptide repeat P3 isomerase activity / RNA polymerase II CTD heptapeptide repeat P6 isomerase activity / peptidylprolyl isomerase / 2 iron, 2 sulfur cluster binding / NAD binding / protein folding / 4 iron, 4 sulfur cluster binding / carbohydrate binding / response to oxidative stress / carbohydrate metabolic process / electron transfer activity / oxidoreductase activity / protein stabilization / iron ion binding / protein domain specific binding / mRNA binding / calcium ion binding / magnesium ion binding / protein homodimerization activity / extracellular region / metal ion binding / nucleus / plasma membrane / cytosol Similarity search - Function | ||||||||||||||||||
Biological species | ![]() ![]() | ||||||||||||||||||
Method | single particle reconstruction / cryo EM / Resolution: 3.89 Å | ||||||||||||||||||
![]() | Pan XW / Li M | ||||||||||||||||||
Funding support | ![]()
| ||||||||||||||||||
![]() | ![]() 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 |
|
-
Structure visualization
Movie |
![]() |
---|---|
Structure viewer | EM map: ![]() ![]() ![]() |
Supplemental images |
-
Downloads & links
-EMDB archive
Map data | ![]() | 227.2 MB | ![]() | |
---|---|---|---|---|
Header (meta data) | ![]() ![]() | 64.9 KB 64.9 KB | Display Display | ![]() |
Images | ![]() | 109.3 KB | ||
Filedesc metadata | ![]() | 15.1 KB | ||
Archive directory | ![]() ![]() | HTTPS FTP |
-Related structure data
Related structure data | ![]() 7wg5MC ![]() 7wfdC ![]() 7wfeC ![]() 7wffC ![]() 7wfgC M: atomic model generated by this map C: citing same article ( |
---|---|
Similar structure data |
-
Links
EMDB pages | ![]() ![]() |
---|---|
Related items in Molecule of the Month |
-
Map
File | ![]() | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
Projections & slices | Image control
Images are generated by Spider. | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
Voxel size | X=Y=Z: 1.04 Å | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
Density |
| ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
Symmetry | Space group: 1 | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
Details | EMDB XML:
CCP4 map header:
|
-Supplemental data
-
Sample components
+Entire : Cyclic electron transfer supercomplex from Arabidopsis
+Supramolecule #1: Cyclic electron transfer supercomplex from 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 3-1, chloroplastic
+Macromolecule #15: Chlorophyll a-b binding protein 4, chloroplastic
+Macromolecule #16: Photosystem I chlorophyll a/b-binding protein 6, chloroplastic
+Macromolecule #17: Photosystem I chlorophyll a/b-binding protein 2, chloroplastic
+Macromolecule #18: Photosystem I chlorophyll a/b-binding protein 5, chloroplastic
+Macromolecule #19: NAD(P)H-quinone oxidoreductase subunit 1, chloroplastic
+Macromolecule #20: NAD(P)H-quinone oxidoreductase subunit 2, chloroplastic
+Macromolecule #21: NAD(P)H-quinone oxidoreductase subunit 3, chloroplastic
+Macromolecule #22: NAD(P)H-quinone oxidoreductase chain 4, chloroplastic
+Macromolecule #23: NAD(P)H-quinone oxidoreductase subunit 4L, chloroplastic
+Macromolecule #24: NAD(P)H-quinone oxidoreductase subunit 5, chloroplastic
+Macromolecule #25: NAD(P)H-quinone oxidoreductase subunit 6, chloroplastic
+Macromolecule #26: Photosynthetic NDH subunit of subcomplex B 1, chloroplastic
+Macromolecule #27: Photosynthetic NDH subunit of subcomplex B 2, chloroplastic
+Macromolecule #28: Photosynthetic NDH subunit of subcomplex B 3, chloroplastic
+Macromolecule #29: NDH dependent flow 6
+Macromolecule #30: Photosynthetic NDH subunit of subcomplex B 5, chloroplastic
+Macromolecule #31: Photosynthetic NDH subunit of lumenal location 1, chloroplastic
+Macromolecule #32: Photosynthetic NDH subunit of lumenal location 2, chloroplastic
+Macromolecule #33: Photosynthetic NDH subunit of lumenal location 3, chloroplastic
+Macromolecule #34: Photosynthetic NDH subunit of lumenal location 4, chloroplastic
+Macromolecule #35: Isoform 2 of Photosynthetic NDH subunit of lumenal location 5, ch...
+Macromolecule #36: NAD(P)H-quinone oxidoreductase subunit H, chloroplastic
+Macromolecule #37: NAD(P)H-quinone oxidoreductase subunit I, chloroplastic
+Macromolecule #38: NAD(P)H-quinone oxidoreductase subunit J, chloroplastic
+Macromolecule #39: NAD(P)H-quinone oxidoreductase subunit K, chloroplastic
+Macromolecule #40: NAD(P)H-quinone oxidoreductase subunit L, chloroplastic
+Macromolecule #41: NAD(P)H-quinone oxidoreductase subunit M, chloroplastic
+Macromolecule #42: NAD(P)H-quinone oxidoreductase subunit N, chloroplastic
+Macromolecule #43: NdhO
+Macromolecule #44: NdhT
+Macromolecule #45: CHLOROPHYLL A
+Macromolecule #46: PHYLLOQUINONE
+Macromolecule #47: 1,2-DIPALMITOYL-PHOSPHATIDYL-GLYCEROLE
+Macromolecule #48: BETA-CAROTENE
+Macromolecule #49: IRON/SULFUR CLUSTER
+Macromolecule #50: DODECYL-ALPHA-D-MALTOSIDE
+Macromolecule #51: DIGALACTOSYL DIACYL GLYCEROL (DGDG)
+Macromolecule #52: (3R,3'R,6S)-4,5-DIDEHYDRO-5,6-DIHYDRO-BETA,BETA-CAROTENE-3,3'-DIOL
+Macromolecule #53: 1,2-DISTEAROYL-MONOGALACTOSYL-DIGLYCERIDE
+Macromolecule #54: CHLOROPHYLL B
+Macromolecule #55: (3S,5R,6S,3'S,5'R,6'S)-5,6,5',6'-DIEPOXY-5,6,5',6'- TETRAHYDRO-BE...
+Macromolecule #56: 1,2-DI-O-ACYL-3-O-[6-DEOXY-6-SULFO-ALPHA-D-GLUCOPYRANOSYL]-SN-GLYCEROL
+Macromolecule #57: FE2/S2 (INORGANIC) CLUSTER
-Experimental details
-Structure determination
Method | cryo EM |
---|---|
![]() | single particle reconstruction |
Aggregation state | particle |
-
Sample preparation
Buffer | pH: 7.8 |
---|---|
Vitrification | Cryogen name: ETHANE |
-
Electron microscopy
Microscope | FEI TITAN KRIOS |
---|---|
Image recording | Film or detector model: GATAN K2 SUMMIT (4k x 4k) / Detector mode: SUPER-RESOLUTION / Average electron dose: 60.0 e/Å2 |
Electron beam | Acceleration voltage: 300 kV / Electron source: ![]() |
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: |
---|---|
Final reconstruction | Resolution.type: BY AUTHOR / Resolution: 3.89 Å / Resolution method: FSC 0.143 CUT-OFF / Number images used: 136022 |
Initial angle assignment | Type: PROJECTION MATCHING |
Final angle assignment | Type: PROJECTION MATCHING |