+Open data
-Basic information
Entry | Database: EMDB / ID: EMD-9989 | ||||||||||||||||||||||||||||||
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Title | Supercomplex for cylic electron transport in cyanobacteria | ||||||||||||||||||||||||||||||
Map data | |||||||||||||||||||||||||||||||
Sample |
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Keywords | Cylic electron transport / photosynthetic NDH complex / Cyanobacteria / ELECTRON TRANSPORT | ||||||||||||||||||||||||||||||
Function / homology | Function and homology information : / NADH dehydrogenase complex / Translocases; Catalysing the translocation of protons; Linked to oxidoreductase reactions / photosynthetic electron transport chain / oxidoreductase activity, acting on NAD(P)H, quinone or similar compound as acceptor / ubiquinone binding / plasma membrane-derived thylakoid membrane / photosynthesis, light reaction / NADH dehydrogenase activity / electron transport coupled proton transport ...: / NADH dehydrogenase complex / Translocases; Catalysing the translocation of protons; Linked to oxidoreductase reactions / photosynthetic electron transport chain / oxidoreductase activity, acting on NAD(P)H, quinone or similar compound as acceptor / ubiquinone binding / plasma membrane-derived thylakoid membrane / photosynthesis, light reaction / NADH dehydrogenase activity / electron transport coupled proton transport / respiratory chain complex I / NADH dehydrogenase (ubiquinone) activity / ATP synthesis coupled electron transport / quinone binding / aerobic respiration / electron transport chain / 2 iron, 2 sulfur cluster binding / NAD binding / 4 iron, 4 sulfur cluster binding / electron transfer activity / iron ion binding / membrane / metal ion binding / plasma membrane Similarity search - Function | ||||||||||||||||||||||||||||||
Biological species | Thermosynechococcus elongatus BP-1 (bacteria) / Thermosynechococcus elongatus (strain BP-1) (bacteria) | ||||||||||||||||||||||||||||||
Method | single particle reconstruction / cryo EM / Resolution: 3.0 Å | ||||||||||||||||||||||||||||||
Authors | Pan X / Cao D / Xie F / Zhang Z / Li M | ||||||||||||||||||||||||||||||
Funding support | China, 9 items
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Citation | Journal: Nat Commun / Year: 2020 Title: Structural basis for electron transport mechanism of complex I-like photosynthetic NAD(P)H dehydrogenase. Authors: Xiaowei Pan / Duanfang Cao / Fen Xie / Fang Xu / Xiaodong Su / Hualing Mi / Xinzheng Zhang / Mei Li / Abstract: NAD(P)H dehydrogenase-like (NDH) complex NDH-1L of cyanobacteria plays a crucial role in cyclic electron flow (CEF) around photosystem I and respiration processes. NDH-1L couples the electron ...NAD(P)H dehydrogenase-like (NDH) complex NDH-1L of cyanobacteria plays a crucial role in cyclic electron flow (CEF) around photosystem I and respiration processes. NDH-1L couples the electron transport from ferredoxin (Fd) to plastoquinone (PQ) and proton pumping from cytoplasm to the lumen that drives the ATP production. NDH-1L-dependent CEF increases the ATP/NADPH ratio, and is therefore pivotal for oxygenic phototrophs to function under stress. Here we report two structures of NDH-1L from Thermosynechococcus elongatus BP-1, in complex with one Fd and an endogenous PQ, respectively. Our structures represent the complete model of cyanobacterial NDH-1L, revealing the binding manner of NDH-1L with Fd and PQ, as well as the structural elements crucial for proper functioning of the NDH-1L complex. Together, our data provides deep insights into the electron transport from Fd to PQ, and its coupling with proton translocation in NDH-1L. | ||||||||||||||||||||||||||||||
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_9989.map.gz | 228.8 MB | EMDB map data format | |
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Header (meta data) | emd-9989-v30.xml emd-9989.xml | 39.1 KB 39.1 KB | Display Display | EMDB header |
Images | emd_9989.png | 317.1 KB | ||
Filedesc metadata | emd-9989.cif.gz | 9.5 KB | ||
Others | emd_9989_additional.map.gz | 228.7 MB | ||
Archive directory | http://ftp.pdbj.org/pub/emdb/structures/EMD-9989 ftp://ftp.pdbj.org/pub/emdb/structures/EMD-9989 | HTTPS FTP |
-Validation report
Summary document | emd_9989_validation.pdf.gz | 598.2 KB | Display | EMDB validaton report |
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Full document | emd_9989_full_validation.pdf.gz | 597.7 KB | Display | |
Data in XML | emd_9989_validation.xml.gz | 6.7 KB | Display | |
Data in CIF | emd_9989_validation.cif.gz | 7.6 KB | Display | |
Arichive directory | https://ftp.pdbj.org/pub/emdb/validation_reports/EMD-9989 ftp://ftp.pdbj.org/pub/emdb/validation_reports/EMD-9989 | HTTPS FTP |
-Related structure data
Related structure data | 6khiMC 9990C 6khjC C: citing same article (ref.) M: atomic model generated by this map |
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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_9989.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
-Additional map: Focused refinement around the peripheral region.
File | emd_9989_additional.map | ||||||||||||
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Annotation | Focused refinement around the peripheral region. | ||||||||||||
Projections & Slices |
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Density Histograms |
-Sample components
+Entire : Electron transport complex NDH-Fd from cyanobacteria
+Supramolecule #1: Electron transport complex NDH-Fd from cyanobacteria
+Macromolecule #1: NAD(P)H-quinone oxidoreductase subunit 1
+Macromolecule #2: NAD(P)H-quinone oxidoreductase subunit 2
+Macromolecule #3: NAD(P)H-quinone oxidoreductase subunit 3
+Macromolecule #4: NAD(P)H-quinone oxidoreductase chain 4 1
+Macromolecule #5: NAD(P)H-quinone oxidoreductase subunit 4L
+Macromolecule #6: NADH dehydrogenase subunit 5
+Macromolecule #7: NADH-quinone oxidoreductase subunit J
+Macromolecule #8: NAD(P)H-quinone oxidoreductase subunit H
+Macromolecule #9: NAD(P)H-quinone oxidoreductase subunit I
+Macromolecule #10: NAD(P)H-quinone oxidoreductase subunit J
+Macromolecule #11: NAD(P)H-quinone oxidoreductase subunit K
+Macromolecule #12: NAD(P)H-quinone oxidoreductase subunit L
+Macromolecule #13: NAD(P)H-quinone oxidoreductase subunit M
+Macromolecule #14: NAD(P)H-quinone oxidoreductase subunit N
+Macromolecule #15: NAD(P)H-quinone oxidoreductase subunit O
+Macromolecule #16: proton-translocating NADH-quinone dehydrogenase subunit P
+Macromolecule #17: proton-translocating NADH-quinone dehydrogenase subunit Q
+Macromolecule #18: Tlr0636 protein
+Macromolecule #19: Tlr0472 protein
+Macromolecule #20: Ferredoxin-1
+Macromolecule #21: DIGALACTOSYL DIACYL GLYCEROL (DGDG)
+Macromolecule #22: 1,2-DIPALMITOYL-PHOSPHATIDYL-GLYCEROLE
+Macromolecule #23: 1,2-DI-O-ACYL-3-O-[6-DEOXY-6-SULFO-ALPHA-D-GLUCOPYRANOSYL]-SN-GLYCEROL
+Macromolecule #24: BETA-CAROTENE
+Macromolecule #25: 1,2-DISTEAROYL-MONOGALACTOSYL-DIGLYCERIDE
+Macromolecule #26: IRON/SULFUR CLUSTER
+Macromolecule #27: 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 |
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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) / Detector mode: SUPER-RESOLUTION / 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 |
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: 3.0 Å / Resolution method: FSC 0.143 CUT-OFF / Number images used: 152003 |
Initial angle assignment | Type: PROJECTION MATCHING |
Final angle assignment | Type: PROJECTION MATCHING |