+Open data
-Basic information
Entry | Database: EMDB / ID: EMD-33401 | |||||||||
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Title | PSI-LHCI-LHCII-Lhcb9 supercomplex of Physcomitrella patens | |||||||||
Map data | ||||||||||
Sample |
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Keywords | Supercomplex / Membrane protein / State transitions / PHOTOSYNTHESIS | |||||||||
Function / homology | Function and homology information chloroplast thylakoid lumen / photosynthesis, light harvesting / photosynthesis, light harvesting in photosystem I / photosystem I reaction center / photosystem I / photosynthetic electron transport in photosystem I / photosystem I / photosystem II / chlorophyll binding / chloroplast thylakoid membrane ...chloroplast thylakoid lumen / photosynthesis, light harvesting / photosynthesis, light harvesting in photosystem I / photosystem I reaction center / photosystem I / photosynthetic electron transport in photosystem I / photosystem I / photosystem II / chlorophyll binding / chloroplast thylakoid membrane / response to light stimulus / photosynthesis / chloroplast / 4 iron, 4 sulfur cluster binding / electron transfer activity / oxidoreductase activity / magnesium ion binding / membrane / metal ion binding Similarity search - Function | |||||||||
Biological species | Physcomitrium patens (plant) | |||||||||
Method | single particle reconstruction / cryo EM / Resolution: 2.68 Å | |||||||||
Authors | Zhang S / Tang KL / Li XY / Wang WD / Yan QJ / Shen LL / Kuang TY / Han GY / Shen JR / Zhang X | |||||||||
Funding support | China, 2 items
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Citation | Journal: Nat Plants / Year: 2023 Title: Structural insights into a unique PSI-LHCI-LHCII-Lhcb9 supercomplex from moss Physcomitrium patens. Authors: Song Zhang / Kailu Tang / Qiujing Yan / Xingyue Li / Liangliang Shen / Wenda Wang / Yi-Kun He / Tingyun Kuang / Guangye Han / Jian-Ren Shen / Xing Zhang / Abstract: Photosystem I (PSI) possesses a variable supramolecular organization among different photosynthetic organisms to adapt to different light environments. Mosses are evolutionary intermediates that ...Photosystem I (PSI) possesses a variable supramolecular organization among different photosynthetic organisms to adapt to different light environments. Mosses are evolutionary intermediates that diverged from aquatic green algae and evolved into land plants. The moss Physcomitrium patens (P. patens) has a light-harvesting complex (LHC) superfamily more diverse than those of green algae and higher plants. Here, we solved the structure of a PSI-LHCI-LHCII-Lhcb9 supercomplex from P. patens at 2.68 Å resolution using cryo-electron microscopy. This supercomplex contains one PSI-LHCI, one phosphorylated LHCII trimer, one moss-specific LHC protein, Lhcb9, and one additional LHCI belt with four Lhca subunits. The complete structure of PsaO was observed in the PSI core. One Lhcbm2 in the LHCII trimer interacts with PSI core through its phosphorylated N terminus, and Lhcb9 mediates assembly of the whole supercomplex. The complicated pigment arrangement provided important information for possible energy-transfer pathways from the peripheral antennae to the PSI core. | |||||||||
History |
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-Structure visualization
Supplemental images |
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-Downloads & links
-EMDB archive
Map data | emd_33401.map.gz | 399 MB | EMDB map data format | |
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Header (meta data) | emd-33401-v30.xml emd-33401.xml | 37.6 KB 37.6 KB | Display Display | EMDB header |
Images | emd_33401.png | 97.2 KB | ||
Filedesc metadata | emd-33401.cif.gz | 9 KB | ||
Others | emd_33401_half_map_1.map.gz emd_33401_half_map_2.map.gz | 392 MB 392 MB | ||
Archive directory | http://ftp.pdbj.org/pub/emdb/structures/EMD-33401 ftp://ftp.pdbj.org/pub/emdb/structures/EMD-33401 | HTTPS FTP |
-Validation report
Summary document | emd_33401_validation.pdf.gz | 1 MB | Display | EMDB validaton report |
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Full document | emd_33401_full_validation.pdf.gz | 1 MB | Display | |
Data in XML | emd_33401_validation.xml.gz | 18 KB | Display | |
Data in CIF | emd_33401_validation.cif.gz | 21.6 KB | Display | |
Arichive directory | https://ftp.pdbj.org/pub/emdb/validation_reports/EMD-33401 ftp://ftp.pdbj.org/pub/emdb/validation_reports/EMD-33401 | HTTPS FTP |
-Related structure data
Related structure data | 7xqpMC M: atomic model generated by this map C: citing same article (ref.) |
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Similar structure data | Similarity search - Function & homologyF&H Search |
-Links
EMDB pages | EMDB (EBI/PDBe) / EMDataResource |
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Related items in Molecule of the Month |
-Map
File | Download / File: emd_33401.map.gz / Format: CCP4 / Size: 421.9 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: 1.014 Å | ||||||||||||||||||||||||||||||||||||
Density |
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Symmetry | Space group: 1 | ||||||||||||||||||||||||||||||||||||
Details | EMDB XML:
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-Supplemental data
-Half map: #2
File | emd_33401_half_map_1.map | ||||||||||||
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Projections & Slices |
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Density Histograms |
-Half map: #1
File | emd_33401_half_map_2.map | ||||||||||||
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Projections & Slices |
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Density Histograms |
-Sample components
+Entire : PSI-LHCI-LHCII-Lhcb9 supercomplex of Physcomitrella patens
+Supramolecule #1: PSI-LHCI-LHCII-Lhcb9 supercomplex of Physcomitrella patens
+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: Predicted protein PsaD
+Macromolecule #5: PsaE
+Macromolecule #6: PSI-F
+Macromolecule #7: PSI-G
+Macromolecule #8: PsaH photosystem I reaction center subunit
+Macromolecule #9: Photosystem I reaction center subunit VIII
+Macromolecule #10: Photosystem I reaction center subunit IX
+Macromolecule #11: PsaK
+Macromolecule #12: PSI subunit V
+Macromolecule #13: Photosystem I reaction center subunit XII
+Macromolecule #14: PsaO
+Macromolecule #15: Chlorophyll a-b binding protein, chloroplastic
+Macromolecule #16: Chlorophyll a-b binding protein, chloroplastic
+Macromolecule #17: Chlorophyll a-b binding protein, chloroplastic
+Macromolecule #18: Chlorophyll a-b binding protein, chloroplastic
+Macromolecule #19: Chlorophyll a-b binding protein, chloroplastic
+Macromolecule #20: Chlorophyll a-b binding protein, chloroplastic
+Macromolecule #21: CHLOROPHYLL A
+Macromolecule #22: PHYLLOQUINONE
+Macromolecule #23: 1,2-DIPALMITOYL-PHOSPHATIDYL-GLYCEROLE
+Macromolecule #24: BETA-CAROTENE
+Macromolecule #25: IRON/SULFUR CLUSTER
+Macromolecule #26: DODECYL-ALPHA-D-MALTOSIDE
+Macromolecule #27: DIGALACTOSYL DIACYL GLYCEROL (DGDG)
+Macromolecule #28: 1,2-DISTEAROYL-MONOGALACTOSYL-DIGLYCERIDE
+Macromolecule #29: CHLOROPHYLL B
+Macromolecule #30: (3R,3'R,6S)-4,5-DIDEHYDRO-5,6-DIHYDRO-BETA,BETA-CAROTENE-3,3'-DIOL
+Macromolecule #31: (3S,5R,6S,3'S,5'R,6'S)-5,6,5',6'-DIEPOXY-5,6,5',6'- TETRAHYDRO-BE...
+Macromolecule #32: (1R,3R)-6-{(3E,5E,7E,9E,11E,13E,15E,17E)-18-[(1S,4R,6R)-4-HYDROXY...
-Experimental details
-Structure determination
Method | cryo EM |
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Processing | single particle reconstruction |
Aggregation state | particle |
-Sample preparation
Buffer | pH: 6.5 |
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Vitrification | Cryogen name: ETHANE / Chamber humidity: 100 % |
-Electron microscopy
Microscope | FEI TITAN KRIOS |
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Image recording | Film or detector model: GATAN K2 SUMMIT (4k x 4k) / Average electron dose: 78.0 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: 1.9000000000000001 µm / Nominal defocus min: 1.6 µm |
Experimental equipment | Model: Titan Krios / Image courtesy: FEI Company |
-Image processing
Startup model | Type of model: INSILICO MODEL |
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Final reconstruction | Resolution.type: BY AUTHOR / Resolution: 2.68 Å / Resolution method: FSC 0.143 CUT-OFF / Number images used: 83777 |
Initial angle assignment | Type: COMMON LINE |
Final angle assignment | Type: COMMON LINE |