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Yorodumi- PDB-21wg: In situ structure of the mixed trans-lumenal/trans-stromal and si... -
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Open data
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Basic information
| Entry | Database: PDB / ID: 21wg | |||||||||
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| Title | In situ structure of the mixed trans-lumenal/trans-stromal and side-by-side PSII-LHCII tetramer (TL-TS-SS tetramer) from Oryza sativa | |||||||||
Components |
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Keywords | PHOTOSYNTHESIS / Photosystem II / in situ / TL-TS-SS tetramer / Oryza sativa / Chloroplast | |||||||||
| Function / homology | Function and homology informationchloroplast photosystem II / chloroplast thylakoid / photosystem II oxygen evolving complex / photosystem II assembly / photosynthesis, light harvesting / oxygen evolving activity / photosystem II stabilization / photosystem II reaction center / photosystem II / photosynthetic electron transport chain ...chloroplast photosystem II / chloroplast thylakoid / photosystem II oxygen evolving complex / photosystem II assembly / photosynthesis, light harvesting / oxygen evolving activity / photosystem II stabilization / photosystem II reaction center / photosystem II / photosynthetic electron transport chain / photosystem II / extrinsic component of membrane / chlorophyll binding / plastid / photosynthetic electron transport in photosystem II / photosynthesis, light reaction / phosphate ion binding / chloroplast thylakoid membrane / photosynthesis / manganese ion binding / electron transfer activity / protein stabilization / iron ion binding / mRNA binding / heme binding / calcium ion binding Similarity search - Function | |||||||||
| Biological species | ![]() | |||||||||
| Method | ELECTRON MICROSCOPY / single particle reconstruction / cryo EM / Resolution: 4.43 Å | |||||||||
Authors | Li, J. / Elias, E. / Zhang, K. / Croce, R. / Zhu, J. | |||||||||
| Funding support | China, 1items
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Citation | Journal: Nature / Year: 2026Title: In situ structures of plant photosystem supercomplexes. Authors: Jiao Li / Eduard Elias / Kai Zhang / Roberta Croce / Jiapeng Zhu / ![]() Abstract: Photosynthesis sustains life on Earth by converting light to chemical energy through the coordinated action of photosystem I (PSI) and photosystem II (PSII) within thylakoid membranes. Although ...Photosynthesis sustains life on Earth by converting light to chemical energy through the coordinated action of photosystem I (PSI) and photosystem II (PSII) within thylakoid membranes. Although structures of isolated photosystems are available, their native organization in chloroplasts remains unknown. Here, using in situ cryo-electron microscopy, we directly imaged Oryza sativa (rice) chloroplasts and determined structures of photosystem supercomplexes in their native membrane environment. We resolved a CSML-type PSII-light harvesting complex II (LHCII) supercomplex, including four LHCII antenna trimers that were not retained in purified preparations. Excitation energy transfer calculations based on this architecture closely reproduce in vivo measurements, indicating its physiological relevance. We also resolved asymmetric PSII-LHCII dimers, including side-by-side, trans-lumenal and trans-stromal architectures, and higher-order assemblies of trimers and tetramers. On the basis of these observations, we propose that PSII forms a trans-lumenal and trans-stromal 'skeleton' that shapes thylakoid morphology and supports grana stacking. In addition, we obtained high-resolution structures of PSI-LHCI-LHCII and PSI-LHCI supercomplexes. Together, these structures reveal extensive networks of lipids, pigments and cofactors, providing the first molecular framework for understanding how the native architecture of plant photosystem supports the exceptional photon-to-electron efficiency of photosynthesis. | |||||||||
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Structure visualization
| Structure viewer | Molecule: Molmil Jmol/JSmol |
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Downloads & links
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Download
| PDBx/mmCIF format | 21wg.cif.gz | 4.9 MB | Display | PDBx/mmCIF format |
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| PDB format | pdb21wg.ent.gz | Display | PDB format | |
| PDBx/mmJSON format | 21wg.json.gz | Tree view | PDBx/mmJSON format | |
| Others | Other downloads |
-Validation report
| Arichive directory | https://data.pdbj.org/pub/pdb/validation_reports/1w/21wg ftp://data.pdbj.org/pub/pdb/validation_reports/1w/21wg | HTTPS FTP |
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-Related structure data
| Related structure data | ![]() 68047MC ![]() 21wdC ![]() 21whC ![]() 21wiC ![]() 21wvC ![]() 27urC ![]() 27utC ![]() 9xj1C ![]() 9xj9C ![]() 9xk3C ![]() 9xk4C ![]() 9xk6C ![]() 9xk7C ![]() 9xk8C ![]() 9xk9C M: map data used to model this data C: citing same article ( |
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| Similar structure data | Similarity search - Function & homology F&H Search |
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Links
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Assembly
| Deposited unit | ![]()
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Components
-Protein , 4 types, 64 molecules 0001020506091011121516191G1N1g1n2G2N2g2n3031323536393G3N3g3n...
| #1: Protein | Mass: 23441.461 Da / Num. of mol.: 40 Source method: isolated from a genetically manipulated source Source: (gene. exp.) ![]() Gene: CAB2R, Os01g0600900, LOC_Os01g41710, OsJ_28992, P0518F01.17-1 Production host: ![]() References: UniProt: P12331 #2: Protein | Mass: 24065.338 Da / Num. of mol.: 8 Source method: isolated from a genetically manipulated source Source: (gene. exp.) ![]() Production host: ![]() References: UniProt: B7E6H8 #16: Protein | Mass: 26609.848 Da / Num. of mol.: 8 Source method: isolated from a genetically manipulated source Source: (gene. exp.) ![]() Gene: Os01g0501800, OSNPB_010501800 Production host: ![]() References: UniProt: Q943W1 #17: Protein | Mass: 20122.322 Da / Num. of mol.: 8 Source method: isolated from a genetically manipulated source Source: (gene. exp.) ![]() Gene: Os07g0141400, OSNPB_070141400 Production host: ![]() References: UniProt: Q8GTK4 |
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-Chlorophyll a-b binding protein, ... , 3 types, 24 molecules 04081418343844481R1r2R2r3R3r4R4r1S1s2S2s3S3s4S4s
| #3: Protein | Mass: 22550.580 Da / Num. of mol.: 8 Source method: isolated from a genetically manipulated source Source: (gene. exp.) ![]() Gene: Os04g0457000, OSNPB_040457000 Production host: ![]() References: UniProt: Q7XV11 #18: Protein | Mass: 25938.283 Da / Num. of mol.: 8 Source method: isolated from a genetically manipulated source Source: (gene. exp.) ![]() Gene: RCABP69, Os07g0558400, OSNPB_070558400 Production host: ![]() References: UniProt: Q6Z411 #19: Protein | Mass: 23719.938 Da / Num. of mol.: 8 Source method: isolated from a genetically manipulated source Source: (gene. exp.) ![]() Gene: LOC_Os11g13890, Os11g0242800, OSNPB_110242800 Production host: ![]() References: UniProt: Q53N83 |
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-Photosystem II ... , 14 types, 112 molecules 1A1a2A2a3A3a4A4a1B1b2B2b3B3b4B4b1C1c2C2c3C3c4C4c1D1d2D2d3D3d...
| #4: Protein | Mass: 36917.039 Da / Num. of mol.: 8 Source method: isolated from a genetically manipulated source Source: (gene. exp.) ![]() Gene: psbA, PA001 Production host: ![]() References: UniProt: P0C432, photosystem II #5: Protein | Mass: 55632.102 Da / Num. of mol.: 8 Source method: isolated from a genetically manipulated source Source: (gene. exp.) ![]() Gene: psbB, PA090 Production host: ![]() References: UniProt: P0C362 #6: Protein | Mass: 49289.438 Da / Num. of mol.: 8 Source method: isolated from a genetically manipulated source Source: (gene. exp.) ![]() Gene: psbC, PA019 Production host: ![]() References: UniProt: P0C365 #7: Protein | Mass: 38268.645 Da / Num. of mol.: 8 Source method: isolated from a genetically manipulated source Source: (gene. exp.) ![]() Gene: psbD, PA018 Production host: ![]() References: UniProt: P0C435, photosystem II #10: Protein | Mass: 6472.638 Da / Num. of mol.: 8 Source method: isolated from a genetically manipulated source Source: (gene. exp.) ![]() Gene: psbH, PA093 Production host: ![]() References: UniProt: P0C420 #11: Protein/peptide | Mass: 3912.664 Da / Num. of mol.: 8 Source method: isolated from a genetically manipulated source Source: (gene. exp.) ![]() Gene: psbI, PA012 Production host: ![]() References: UniProt: P0C405 #12: Protein/peptide | Mass: 3586.210 Da / Num. of mol.: 8 Source method: isolated from a genetically manipulated source Source: (gene. exp.) ![]() Gene: psbJ Production host: ![]() References: UniProt: P0C414 #13: Protein/peptide | Mass: 4273.128 Da / Num. of mol.: 8 Source method: isolated from a genetically manipulated source Source: (gene. exp.) ![]() Gene: psbK, PA011 Production host: ![]() References: UniProt: P0C408 #14: Protein/peptide | Mass: 4366.904 Da / Num. of mol.: 8 Source method: isolated from a genetically manipulated source Source: (gene. exp.) ![]() Gene: psbL Production host: ![]() References: UniProt: P0C416 #15: Protein/peptide | Mass: 3668.451 Da / Num. of mol.: 8 Source method: isolated from a genetically manipulated source Source: (gene. exp.) ![]() Gene: psbM, PA029 Production host: ![]() References: UniProt: P0C411 #20: Protein/peptide | Mass: 3692.472 Da / Num. of mol.: 8 Source method: isolated from a genetically manipulated source Source: (gene. exp.) ![]() Gene: psbT Production host: ![]() References: UniProt: P0C427 #22: Protein | Mass: 10861.420 Da / Num. of mol.: 8 Source method: isolated from a genetically manipulated source Source: (gene. exp.) ![]() Gene: OJ1470_H06.117, Os07g0147500, OSNPB_070147500 Production host: ![]() References: UniProt: Q8H4P7 #23: Protein | Mass: 5866.499 Da / Num. of mol.: 8 Source method: isolated from a genetically manipulated source Source: (gene. exp.) ![]() Gene: PSBW, Os01g0773700, LOC_Os01g56680, P0490D09.17 Production host: ![]() References: UniProt: Q5ZBY9 #26: Protein | Mass: 6582.766 Da / Num. of mol.: 8 Source method: isolated from a genetically manipulated source Source: (gene. exp.) ![]() Gene: psbZ Production host: ![]() References: UniProt: P0C429 |
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-Cytochrome b559 subunit ... , 2 types, 16 molecules 1E1e2E2e3E3e4E4e1F1f2F2f3F3f4F4f
| #8: Protein | Mass: 8654.690 Da / Num. of mol.: 8 Source method: isolated from a genetically manipulated source Source: (gene. exp.) ![]() Gene: psbE, PA079 Production host: ![]() References: UniProt: P0C368 #9: Protein/peptide | Mass: 4142.866 Da / Num. of mol.: 8 Source method: isolated from a genetically manipulated source Source: (gene. exp.) ![]() Gene: psbF, PA078 Production host: ![]() References: UniProt: P0C399 |
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-Protein/peptide , 3 types, 24 molecules 1U1u2U2u3U3u4U4u1X1x2X2x3X3x4X4x1Y1y2Y2y3Y3y4Y4y
| #21: Protein/peptide | Mass: 3009.631 Da / Num. of mol.: 8 Source method: isolated from a genetically manipulated source Source: (gene. exp.) ![]() Gene: Os02g0581100, OSNPB_020581100 Production host: ![]() References: UniProt: Q0E032 #24: Protein/peptide | Mass: 3927.654 Da / Num. of mol.: 8 Source method: isolated from a genetically manipulated source Source: (gene. exp.) ![]() Gene: P0470D12.144, Os07g0673550, P0304A10.1 Production host: ![]() References: UniProt: Q7EXX2 #25: Protein/peptide | Mass: 4061.776 Da / Num. of mol.: 8 Source method: isolated from a genetically manipulated source Source: (gene. exp.) ![]() Gene: Os08g0119800, OSNPB_080119800 Production host: ![]() References: UniProt: Q6ZJ41 |
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-Non-polymers , 1 types, 8 molecules 
| #27: Chemical | ChemComp-BCT / |
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-Details
| Has ligand of interest | Y |
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| Has protein modification | N |
-Experimental details
-Experiment
| Experiment | Method: ELECTRON MICROSCOPY |
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| EM experiment | Aggregation state: PARTICLE / 3D reconstruction method: single particle reconstruction |
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Sample preparation
| Component | Name: Chloroplast / Type: COMPLEX / Entity ID: #1-#2, #8, #13, #15-#16, #21, #24-#26, #17, #22 / Source: NATURAL |
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| Source (natural) | Organism: ![]() |
| Buffer solution | pH: 7.3 |
| Specimen | Embedding applied: NO / Shadowing applied: NO / Staining applied: NO / Vitrification applied: YES |
| Vitrification | Cryogen name: ETHANE |
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Electron microscopy imaging
| Experimental equipment | ![]() Model: Titan Krios / Image courtesy: FEI Company |
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| Microscopy | Model: TFS KRIOS |
| Electron gun | Electron source: FIELD EMISSION GUN / Accelerating voltage: 300 kV / Illumination mode: FLOOD BEAM |
| Electron lens | Mode: BRIGHT FIELD / Nominal defocus max: 2200 nm / Nominal defocus min: 1400 nm |
| Image recording | Electron dose: 1.375 e/Å2 / Film or detector model: GATAN K3 (6k x 4k) |
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Processing
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| CTF correction | Type: PHASE FLIPPING AND AMPLITUDE CORRECTION | ||||||||||||||||||||||||
| 3D reconstruction | Resolution: 4.43 Å / Resolution method: FSC 0.143 CUT-OFF / Num. of particles: 45682 / Symmetry type: POINT | ||||||||||||||||||||||||
| Refinement | Highest resolution: 4.43 Å Stereochemistry target values: REAL-SPACE (WEIGHTED MAP SUM AT ATOM CENTERS) | ||||||||||||||||||||||||
| Refine LS restraints |
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China, 1items
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FIELD EMISSION GUN