+
Open data
-
Basic information
| Entry | Database: EMDB / ID: EMD-9957 | ||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Title | C2S2M2N2-type PSII-LHCII | ||||||||||||
Map data | |||||||||||||
Sample |
| ||||||||||||
Keywords | Photosystem II / C2S2M2N2-type PSII-LHCII / PHOTOSYNTHESIS | ||||||||||||
| Function / homology | Function and homology informationthylakoid light-harvesting complex / chloroplast photosystem II / photosynthesis, light harvesting in photosystem I / photosynthesis, light harvesting / photosystem II oxygen evolving complex / photosystem II assembly / oxygen evolving activity / photosystem II stabilization / photosystem II reaction center / photosystem II ...thylakoid light-harvesting complex / chloroplast photosystem II / photosynthesis, light harvesting in photosystem I / photosynthesis, light harvesting / photosystem II oxygen evolving complex / photosystem II assembly / oxygen evolving activity / photosystem II stabilization / photosystem II reaction center / photosystem II / oxidoreductase activity, acting on diphenols and related substances as donors, oxygen as acceptor / photosynthetic electron transport chain / photosystem I / photosystem II / response to herbicide / chlorophyll binding / photosynthetic electron transport in photosystem II / : / phosphate ion binding / chloroplast thylakoid membrane / photosynthesis, light reaction / response to light stimulus / photosynthesis / electron transfer activity / protein stabilization / iron ion binding / heme binding / metal ion binding Similarity search - Function | ||||||||||||
| Biological species | ![]() | ||||||||||||
| Method | single particle reconstruction / cryo EM / Resolution: 3.73 Å | ||||||||||||
Authors | Chang SH / Shen LL | ||||||||||||
| Funding support | China, 3 items
| ||||||||||||
Citation | Journal: Proc Natl Acad Sci U S A / Year: 2019Title: Structure of a CSMN-type PSII-LHCII supercomplex from the green alga . Authors: Liangliang Shen / Zihui Huang / Shenghai Chang / Wenda Wang / Jingfen Wang / Tingyun Kuang / Guangye Han / Jian-Ren Shen / Xing Zhang / ![]() Abstract: Photosystem II (PSII) in the thylakoid membranes of plants, algae, and cyanobacteria catalyzes light-induced oxidation of water by which light energy is converted to chemical energy and molecular ...Photosystem II (PSII) in the thylakoid membranes of plants, algae, and cyanobacteria catalyzes light-induced oxidation of water by which light energy is converted to chemical energy and molecular oxygen is produced. In higher plants and most eukaryotic algae, the PSII core is surrounded by variable numbers of light-harvesting antenna complex II (LHCII), forming a PSII-LHCII supercomplex. In order to harvest energy efficiently at low-light-intensity conditions under water, a complete PSII-LHCII supercomplex (CSMN) of the green alga (Cr) contains more antenna subunits and pigments than the dominant PSII-LHCII supercomplex (CSM) of plants. The detailed structure and energy transfer pathway of the Cr-PSII-LHCII remain unknown. Here we report a cryoelectron microscopy structure of a complete, CSMN-type PSII-LHCII supercomplex from at 3.37-Å resolution. The results show that the Cr-CSMN supercomplex is organized as a dimer, with 3 LHCII trimers, 1 CP26, and 1 CP29 peripheral antenna subunits surrounding each PSII core. The N-LHCII trimer partially occupies the position of CP24, which is present in the higher-plant PSII-LHCII but absent in the green alga. The M trimer is rotated relative to the corresponding M trimer in plant PSII-LHCII. In addition, some unique features were found in the green algal PSII core. The arrangement of a huge number of pigments allowed us to deduce possible energy transfer pathways from the peripheral antennae to the PSII core. | ||||||||||||
| History |
|
-
Structure visualization
| Movie |
Movie viewer |
|---|---|
| Structure viewer | EM map: SurfView Molmil Jmol/JSmol |
| Supplemental images |
-
Downloads & links
-EMDB archive
| Map data | emd_9957.map.gz | 95.5 MB | EMDB map data format | |
|---|---|---|---|---|
| Header (meta data) | emd-9957-v30.xml emd-9957.xml | 44.5 KB 44.5 KB | Display Display | EMDB header |
| Images | emd_9957.png | 79 KB | ||
| Filedesc metadata | emd-9957.cif.gz | 9.9 KB | ||
| Others | emd_9957_additional_1.map.gz emd_9957_additional_2.map.gz | 74.3 MB 73 MB | ||
| Archive directory | http://ftp.pdbj.org/pub/emdb/structures/EMD-9957 ftp://ftp.pdbj.org/pub/emdb/structures/EMD-9957 | HTTPS FTP |
-Validation report
| Summary document | emd_9957_validation.pdf.gz | 640.5 KB | Display | EMDB validaton report |
|---|---|---|---|---|
| Full document | emd_9957_full_validation.pdf.gz | 640.1 KB | Display | |
| Data in XML | emd_9957_validation.xml.gz | 6.5 KB | Display | |
| Data in CIF | emd_9957_validation.cif.gz | 7.6 KB | Display | |
| Arichive directory | https://ftp.pdbj.org/pub/emdb/validation_reports/EMD-9957 ftp://ftp.pdbj.org/pub/emdb/validation_reports/EMD-9957 | HTTPS FTP |
-Related structure data
| Related structure data | ![]() 6kafMC M: atomic model generated by this map C: citing same article ( |
|---|---|
| Similar structure data |
-
Links
| EMDB pages | EMDB (EBI/PDBe) / EMDataResource |
|---|---|
| Related items in Molecule of the Month |
-
Map
| File | Download / File: emd_9957.map.gz / Format: CCP4 / Size: 103 MB / Type: IMAGE STORED AS FLOATING POINT NUMBER (4 BYTES) | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Projections & slices | Image control
Images are generated by Spider. | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Voxel size | X=Y=Z: 1.307 Å | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Density |
| ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Symmetry | Space group: 1 | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Details | EMDB XML:
CCP4 map header:
| ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
-Supplemental data
-Additional map: #2
| File | emd_9957_additional_1.map | ||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Projections & Slices |
| ||||||||||||
| Density Histograms |
-Additional map: #1
| File | emd_9957_additional_2.map | ||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Projections & Slices |
| ||||||||||||
| Density Histograms |
-
Sample components
+Entire : C2S2M2N2-type PSII-LHCII supercomplex of Chlamydomonas reinhardtii
+Supramolecule #1: C2S2M2N2-type PSII-LHCII supercomplex of Chlamydomonas reinhardtii
+Macromolecule #1: Chlorophyll a-b binding protein CP29
+Macromolecule #2: Photosystem II protein D1
+Macromolecule #3: Photosystem II D2 protein
+Macromolecule #4: Cytochrome b559 subunit beta
+Macromolecule #5: Photosystem II reaction center protein H
+Macromolecule #6: Photosystem II reaction center protein I
+Macromolecule #7: Photosystem II reaction center protein J, PsbJ
+Macromolecule #8: Photosystem II reaction center protein K
+Macromolecule #9: Photosystem II reaction center protein L
+Macromolecule #10: Photosystem II reaction center protein M
+Macromolecule #11: Oxygen-evolving enhancer protein 1 of photosystem II
+Macromolecule #12: Photosystem II reaction center protein T
+Macromolecule #13: Photosystem II reaction center W protein, chloroplastic
+Macromolecule #14: 4.1 kDa photosystem II subunit
+Macromolecule #15: Photosystem II reaction center protein Z
+Macromolecule #16: Photosystem II reaction center protein 30, Psb30
+Macromolecule #17: Cytochrome b559 subunit alpha
+Macromolecule #18: Chlorophyll a-b binding protein, chloroplastic
+Macromolecule #19: Chlorophyll a-b binding protein, chloroplastic
+Macromolecule #20: Photosystem II CP43 reaction center protein
+Macromolecule #21: Photosystem II CP47 reaction center protein
+Macromolecule #22: CHLOROPHYLL A
+Macromolecule #23: (3R,3'R,6S)-4,5-DIDEHYDRO-5,6-DIHYDRO-BETA,BETA-CAROTENE-3,3'-DIOL
+Macromolecule #24: (3S,5R,6S,3'S,5'R,6'S)-5,6,5',6'-DIEPOXY-5,6,5',6'- TETRAHYDRO-BE...
+Macromolecule #25: 1,2-DIPALMITOYL-PHOSPHATIDYL-GLYCEROLE
+Macromolecule #26: CHLOROPHYLL B
+Macromolecule #27: (1R,3R)-6-{(3E,5E,7E,9E,11E,13E,15E,17E)-18-[(1S,4R,6R)-4-HYDROXY...
+Macromolecule #28: FE (II) ION
+Macromolecule #29: CHLORIDE ION
+Macromolecule #30: PHEOPHYTIN A
+Macromolecule #31: BETA-CAROTENE
+Macromolecule #32: 1,2-DI-O-ACYL-3-O-[6-DEOXY-6-SULFO-ALPHA-D-GLUCOPYRANOSYL]-SN-GLYCEROL
+Macromolecule #33: 2,3-DIMETHYL-5-(3,7,11,15,19,23,27,31,35-NONAMETHYL-2,6,10,14,18,...
+Macromolecule #34: 1,2-DISTEAROYL-MONOGALACTOSYL-DIGLYCERIDE
+Macromolecule #35: BICARBONATE ION
+Macromolecule #36: DIGALACTOSYL DIACYL GLYCEROL (DGDG)
+Macromolecule #37: PROTOPORPHYRIN IX CONTAINING FE
-Experimental details
-Structure determination
| Method | cryo EM |
|---|---|
Processing | single particle reconstruction |
| Aggregation state | particle |
-
Sample preparation
| Buffer | pH: 7.5 |
|---|---|
| Vitrification | Cryogen name: ETHANE / Chamber humidity: 100 % |
-
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: 50.0 e/Å2 |
| Electron beam | Acceleration voltage: 300 kV / Electron source: FIELD EMISSION GUN |
| Electron optics | Illumination mode: OTHER / Imaging mode: BRIGHT FIELD |
| Experimental equipment | ![]() Model: Titan Krios / Image courtesy: FEI Company |
Movie
Controller
About Yorodumi



Keywords
Authors
China, 3 items
Citation
UCSF Chimera











Z (Sec.)
Y (Row.)
X (Col.)



















































Processing
