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- PDB-7d1t: Cryo-EM Structure of PSII at 1.95 angstrom resolution -

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Entry
Database: PDB / ID: 7d1t
TitleCryo-EM Structure of PSII at 1.95 angstrom resolution
Components
  • (Cytochrome b559 subunit ...) x 2
  • (Photosystem II ...) x 17
  • Cytochrome c-550
KeywordsPHOTOSYNTHESIS / Photosystem II
Function / homology
Function and homology information


photosystem II assembly / photosystem II stabilization / oxygen evolving activity / photosystem II oxygen evolving complex / photosystem II / photosystem II reaction center / photosynthetic electron transport chain / oxidoreductase activity, acting on diphenols and related substances as donors, oxygen as acceptor / response to herbicide / photosystem II ...photosystem II assembly / photosystem II stabilization / oxygen evolving activity / photosystem II oxygen evolving complex / photosystem II / photosystem II reaction center / photosynthetic electron transport chain / oxidoreductase activity, acting on diphenols and related substances as donors, oxygen as acceptor / response to herbicide / photosystem II / extrinsic component of membrane / photosynthetic electron transport in photosystem II / chlorophyll binding / plasma membrane-derived thylakoid membrane / photosynthesis, light reaction / electron transporter, transferring electrons within the cyclic electron transport pathway of photosynthesis activity / phosphate ion binding / photosynthesis / respiratory electron transport chain / manganese ion binding / electron transfer activity / protein stabilization / iron ion binding / heme binding / metal ion binding
Similarity search - Function
Photosystem II protein Y (PsbY) / Photosystem II PsbY / Photosystem II PsbU, oxygen evolving complex / Photosystem II 12 kDa extrinsic protein (PsbU) / Photosystem II PsbV, cytochrome c-550 precursor / Photosystem II cytochrome c-550 precursor / Cytochrome c-550 domain / Cytochrome c-550 domain / Photosystem II PsbJ / Photosystem II PsbJ superfamily ...Photosystem II protein Y (PsbY) / Photosystem II PsbY / Photosystem II PsbU, oxygen evolving complex / Photosystem II 12 kDa extrinsic protein (PsbU) / Photosystem II PsbV, cytochrome c-550 precursor / Photosystem II cytochrome c-550 precursor / Cytochrome c-550 domain / Cytochrome c-550 domain / Photosystem II PsbJ / Photosystem II PsbJ superfamily / PsbJ / Photosystem II reaction centre protein Ycf12 / Photosystem II complex subunit Ycf12 / Photosystem II PsbX, type 1 subfamily / Photosystem II PsbO, manganese-stabilising / Manganese-stabilising protein / photosystem II polypeptide / Photosystem II reaction centre M protein (PsbM) / Photosystem II PsbM superfamily / Photosystem II PsbZ, reaction centre / Photosystem II PsbZ superfamily / YCF9 / Photosystem II PsbM / Photosystem II PsbX / Photosystem II reaction centre X protein (PsbX) / Photosystem II PsbT / Photosystem II PsbL / Photosystem II PsbL superfamily / Photosystem II PsbT superfamily / Photosystem II CP43 reaction centre protein superfamily / Photosystem II reaction centre T protein / PsbL protein / Photosystem II PsbK / Photosystem II CP43 reaction centre protein / Photosystem II PsbK superfamily / Photosystem II 4 kDa reaction centre component / Photosystem II CP47 reaction centre protein / Photosystem II PsbI / Photosystem II PsbI superfamily / Photosystem II reaction centre I protein (PSII 4.8 kDa protein) / Photosystem II reaction centre protein H / Photosystem II protein D1 / Photosystem II D2 protein / Photosystem II cytochrome b559, conserved site / Photosystem II cytochrome b559, alpha subunit / Photosystem II cytochrome b559, beta subunit / Photosystem II cytochrome b559, N-terminal / Photosystem II cytochrome b559, alpha subunit, lumenal region / Photosystem II reaction centre protein H superfamily / Photosystem II cytochrome b559, alpha subunit superfamily / Cytochrome b559, alpha (gene psbE) and beta (gene psbF)subunits / Lumenal portion of Cytochrome b559, alpha (gene psbE) subunit / Photosystem II 10 kDa phosphoprotein / Cytochrome b559 subunits heme-binding site signature. / Photosystem antenna protein-like / Photosystem antenna protein-like superfamily / Photosystem II protein / Outer membrane protein/outer membrane enzyme PagP, beta-barrel / Photosynthetic reaction centre, L/M / Photosystem II protein D1/D2 superfamily / Photosynthetic reaction centre protein / Photosynthetic reaction center proteins signature. / Cytochrome c family profile. / Cytochrome c-like domain / Cytochrome c-like domain superfamily
Similarity search - Domain/homology
BETA-CAROTENE / BICARBONATE ION / CHLOROPHYLL A / DIGALACTOSYL DIACYL GLYCEROL (DGDG) / : / HEME C / PROTOPORPHYRIN IX CONTAINING FE / 1,2-DIPALMITOYL-PHOSPHATIDYL-GLYCEROLE / 1,2-DISTEAROYL-MONOGALACTOSYL-DIGLYCERIDE / CA-MN4-O5 CLUSTER ...BETA-CAROTENE / BICARBONATE ION / CHLOROPHYLL A / DIGALACTOSYL DIACYL GLYCEROL (DGDG) / : / HEME C / PROTOPORPHYRIN IX CONTAINING FE / 1,2-DIPALMITOYL-PHOSPHATIDYL-GLYCEROLE / 1,2-DISTEAROYL-MONOGALACTOSYL-DIGLYCERIDE / CA-MN4-O5 CLUSTER / PHEOPHYTIN A / Chem-PL9 / (3R)-beta,beta-caroten-3-ol / Chem-SQD / Unknown ligand / Photosystem II CP47 reaction center protein / Photosystem II extrinsic protein O / Photosystem II reaction center protein Psb30 / Photosystem II reaction center protein X / Photosystem II reaction center protein Z / Photosystem II CP43 reaction center protein / Photosystem II D2 protein / Photosystem II extrinsic protein V / Photosystem II reaction center protein Y / Cytochrome b559 subunit alpha / Cytochrome b559 subunit beta / Photosystem II reaction center protein I / Photosystem II reaction center protein L / Photosystem II reaction center protein M / Photosystem II reaction center protein T / Photosystem II reaction center protein H / Photosystem II reaction center protein K / Photosystem II protein D1 / Photosystem II extrinsic protein U / Photosystem II reaction center protein J
Similarity search - Component
Biological speciesThermosynechococcus vulcanus (bacteria)
MethodELECTRON MICROSCOPY / single particle reconstruction / cryo EM / Resolution: 1.95 Å
AuthorsKato, K. / Miyazaki, N. / Hamaguchi, T. / Nakajima, Y. / Akita, F. / Yonekura, K. / Shen, J.R.
CitationJournal: Commun Biol / Year: 2021
Title: High-resolution cryo-EM structure of photosystem II reveals damage from high-dose electron beams.
Authors: Koji Kato / Naoyuki Miyazaki / Tasuku Hamaguchi / Yoshiki Nakajima / Fusamichi Akita / Koji Yonekura / Jian-Ren Shen /
Abstract: Photosystem II (PSII) plays a key role in water-splitting and oxygen evolution. X-ray crystallography has revealed its atomic structure and some intermediate structures. However, these structures are ...Photosystem II (PSII) plays a key role in water-splitting and oxygen evolution. X-ray crystallography has revealed its atomic structure and some intermediate structures. However, these structures are in the crystalline state and its final state structure has not been solved. Here we analyzed the structure of PSII in solution at 1.95 Å resolution by single-particle cryo-electron microscopy (cryo-EM). The structure obtained is similar to the crystal structure, but a PsbY subunit was visible in the cryo-EM structure, indicating that it represents its physiological state more closely. Electron beam damage was observed at a high-dose in the regions that were easily affected by redox states, and reducing the beam dosage by reducing frames from 50 to 2 yielded a similar resolution but reduced the damage remarkably. This study will serve as a good indicator for determining damage-free cryo-EM structures of not only PSII but also all biological samples, especially redox-active metalloproteins.
History
DepositionSep 15, 2020Deposition site: PDBJ / Processing site: PDBJ
Revision 1.0Mar 31, 2021Provider: repository / Type: Initial release
Revision 1.1Apr 7, 2021Group: Database references / Category: citation / citation_author
Item: _citation.journal_volume / _citation.page_first ..._citation.journal_volume / _citation.page_first / _citation.page_last / _citation.pdbx_database_id_PubMed / _citation.title / _citation_author.identifier_ORCID

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Assembly

Deposited unit
A: Photosystem II protein D1
B: Photosystem II CP47 reaction center protein
C: Photosystem II CP43 reaction center protein
D: Photosystem II D2 protein
E: Cytochrome b559 subunit alpha
F: Cytochrome b559 subunit beta
H: Photosystem II reaction center protein H
I: Photosystem II reaction center protein I
J: Photosystem II reaction center protein J
K: Photosystem II reaction center protein K
L: Photosystem II reaction center protein L
M: Photosystem II reaction center protein M
O: Photosystem II manganese-stabilizing polypeptide
T: Photosystem II reaction center protein T
U: Photosystem II 12 kDa extrinsic protein
V: Cytochrome c-550
Y: Photosystem II reaction center protein Ycf12
X: Photosystem II reaction center protein X
Z: Photosystem II reaction center protein Z
R: Photosystem II protein Y
a: Photosystem II protein D1
b: Photosystem II CP47 reaction center protein
c: Photosystem II CP43 reaction center protein
d: Photosystem II D2 protein
e: Cytochrome b559 subunit alpha
f: Cytochrome b559 subunit beta
h: Photosystem II reaction center protein H
i: Photosystem II reaction center protein I
j: Photosystem II reaction center protein J
k: Photosystem II reaction center protein K
l: Photosystem II reaction center protein L
m: Photosystem II reaction center protein M
o: Photosystem II manganese-stabilizing polypeptide
t: Photosystem II reaction center protein T
u: Photosystem II 12 kDa extrinsic protein
v: Cytochrome c-550
y: Photosystem II reaction center protein Ycf12
x: Photosystem II reaction center protein X
z: Photosystem II reaction center protein Z
r: Photosystem II protein Y
hetero molecules


Theoretical massNumber of molelcules
Total (without water)709,085236
Polymers591,50140
Non-polymers117,584196
Water43,8122432
1


  • Idetical with deposited unit
  • defined by author
  • Evidence: native gel electrophoresis
TypeNameSymmetry operationNumber
identity operation1_5551

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Components

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Photosystem II ... , 17 types, 34 molecules AaBbCcDdHhIiJjKkLlMmOoTtUuYyXx...

#1: Protein Photosystem II protein D1 / / PSII D1 protein / Photosystem II Q(B) protein


Mass: 37029.234 Da / Num. of mol.: 2 / Source method: isolated from a natural source / Source: (natural) Thermosynechococcus vulcanus (bacteria) / References: UniProt: P51765, photosystem II
#2: Protein Photosystem II CP47 reaction center protein / / PSII 47 kDa protein / Protein CP-47


Mass: 56068.742 Da / Num. of mol.: 2 / Source method: isolated from a natural source / Source: (natural) Thermosynechococcus vulcanus (bacteria) / References: UniProt: D0VWR1
#3: Protein Photosystem II CP43 reaction center protein / / PSII 43 kDa protein / Protein CP-43


Mass: 49207.250 Da / Num. of mol.: 2 / Source method: isolated from a natural source / Source: (natural) Thermosynechococcus vulcanus (bacteria) / References: UniProt: D0VWR7
#4: Protein Photosystem II D2 protein / / PSII D2 protein / Photosystem Q(A) protein


Mass: 38419.941 Da / Num. of mol.: 2 / Source method: isolated from a natural source / Source: (natural) Thermosynechococcus vulcanus (bacteria) / References: UniProt: D0VWR8, photosystem II
#7: Protein Photosystem II reaction center protein H / / PSII-H


Mass: 7057.349 Da / Num. of mol.: 2 / Source method: isolated from a natural source / Source: (natural) Thermosynechococcus vulcanus (bacteria) / References: UniProt: P19052
#8: Protein/peptide Photosystem II reaction center protein I / / PSII-I / PSII 4.4 kDa protein


Mass: 4195.983 Da / Num. of mol.: 2 / Source method: isolated from a natural source / Source: (natural) Thermosynechococcus vulcanus (bacteria) / References: UniProt: P12240
#9: Protein/peptide Photosystem II reaction center protein J / / PSII-J


Mass: 3756.439 Da / Num. of mol.: 2 / Source method: isolated from a natural source / Source: (natural) Thermosynechococcus vulcanus (bacteria) / References: UniProt: Q7DGD4
#10: Protein/peptide Photosystem II reaction center protein K / / PSII-K


Mass: 4101.911 Da / Num. of mol.: 2 / Source method: isolated from a natural source / Source: (natural) Thermosynechococcus vulcanus (bacteria) / References: UniProt: P19054
#11: Protein/peptide Photosystem II reaction center protein L / / PSII-L


Mass: 4299.044 Da / Num. of mol.: 2 / Source method: isolated from a natural source / Source: (natural) Thermosynechococcus vulcanus (bacteria) / References: UniProt: P12241
#12: Protein/peptide Photosystem II reaction center protein M / / PSII-M


Mass: 3835.527 Da / Num. of mol.: 2 / Source method: isolated from a natural source / Source: (natural) Thermosynechococcus vulcanus (bacteria) / References: UniProt: P12312
#13: Protein Photosystem II manganese-stabilizing polypeptide / / MSP / Extrinsic protein O of oxygen-evolving complex


Mass: 26651.707 Da / Num. of mol.: 2 / Source method: isolated from a natural source / Source: (natural) Thermosynechococcus vulcanus (bacteria) / References: UniProt: D0VWR2
#14: Protein/peptide Photosystem II reaction center protein T / / PSII-Tc


Mass: 3777.559 Da / Num. of mol.: 2 / Source method: isolated from a natural source / Source: (natural) Thermosynechococcus vulcanus (bacteria) / References: UniProt: P12313
#15: Protein Photosystem II 12 kDa extrinsic protein / / PS II complex 12 kDa extrinsic protein / PSII-U / Extrinsic protein U of oxygen-evolving complex


Mass: 10966.317 Da / Num. of mol.: 2 / Source method: isolated from a natural source / Source: (natural) Thermosynechococcus vulcanus (bacteria) / References: UniProt: P56152
#17: Protein/peptide Photosystem II reaction center protein Ycf12 /


Mass: 3228.035 Da / Num. of mol.: 2 / Source method: isolated from a natural source / Source: (natural) Thermosynechococcus vulcanus (bacteria) / References: UniProt: D0VWR3
#18: Protein/peptide Photosystem II reaction center protein X /


Mass: 4191.030 Da / Num. of mol.: 2 / Source method: isolated from a natural source / Source: (natural) Thermosynechococcus vulcanus (bacteria) / References: UniProt: D0VWR4
#19: Protein Photosystem II reaction center protein Z / / PSII-Z


Mass: 6766.187 Da / Num. of mol.: 2 / Source method: isolated from a natural source / Source: (natural) Thermosynechococcus vulcanus (bacteria) / References: UniProt: D0VWR5
#20: Protein/peptide Photosystem II protein Y /


Mass: 3859.732 Da / Num. of mol.: 2 / Source method: isolated from a natural source / Source: (natural) Thermosynechococcus vulcanus (bacteria) / References: UniProt: P0DM37

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Cytochrome b559 subunit ... , 2 types, 4 molecules EeFf

#5: Protein Cytochrome b559 subunit alpha / / PSII reaction center subunit V


Mass: 9321.515 Da / Num. of mol.: 2 / Source method: isolated from a natural source / Source: (natural) Thermosynechococcus vulcanus (bacteria) / References: UniProt: P12238
#6: Protein/peptide Cytochrome b559 subunit beta / / PSII reaction center subunit VI


Mass: 3868.611 Da / Num. of mol.: 2 / Source method: isolated from a natural source / Source: (natural) Thermosynechococcus vulcanus (bacteria) / References: UniProt: P12239

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Protein , 1 types, 2 molecules Vv

#16: Protein Cytochrome c-550 / Cytochrome c550 / Low-potential cytochrome c / Extrinsic protein V of oxygen-evolving complex


Mass: 15148.255 Da / Num. of mol.: 2 / Source method: isolated from a natural source / Source: (natural) Thermosynechococcus vulcanus (bacteria) / References: UniProt: P0A387

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Sugars , 2 types, 16 molecules

#31: Sugar
ChemComp-DGD / DIGALACTOSYL DIACYL GLYCEROL (DGDG)


Type: saccharideCarbohydrate / Mass: 949.299 Da / Num. of mol.: 8 / Source method: obtained synthetically / Formula: C51H96O15
#32: Sugar
ChemComp-LMT / DODECYL-BETA-D-MALTOSIDE


Type: D-saccharide / Mass: 510.615 Da / Num. of mol.: 8 / Source method: obtained synthetically / Formula: C24H46O11 / Comment: detergent*YM

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Non-polymers , 17 types, 2612 molecules

#21: Chemical ChemComp-OEX / CA-MN4-O5 CLUSTER


Mass: 339.827 Da / Num. of mol.: 2 / Source method: obtained synthetically / Formula: CaMn4O5
#22: Chemical ChemComp-FE2 / FE (II) ION


Mass: 55.845 Da / Num. of mol.: 2 / Source method: obtained synthetically / Formula: Fe
#23: Chemical
ChemComp-CL / CHLORIDE ION / Chloride


Mass: 35.453 Da / Num. of mol.: 4 / Source method: obtained synthetically / Formula: Cl
#24: Chemical...
ChemComp-CLA / CHLOROPHYLL A / Chlorophyll a


Mass: 893.489 Da / Num. of mol.: 70 / Source method: obtained synthetically / Formula: C55H72MgN4O5
#25: Chemical
ChemComp-PHO / PHEOPHYTIN A / Pheophytin


Mass: 871.200 Da / Num. of mol.: 4 / Source method: obtained synthetically / Formula: C55H74N4O5
#26: Chemical
ChemComp-BCR / BETA-CAROTENE / Β-Carotene


Mass: 536.873 Da / Num. of mol.: 20 / Source method: obtained synthetically / Formula: C40H56
#27: Chemical
ChemComp-SQD / 1,2-DI-O-ACYL-3-O-[6-DEOXY-6-SULFO-ALPHA-D-GLUCOPYRANOSYL]-SN-GLYCEROL / SULFOQUINOVOSYLDIACYLGLYCEROL


Mass: 795.116 Da / Num. of mol.: 8 / Source method: obtained synthetically / Formula: C41H78O12S
#28: Chemical
ChemComp-PL9 / 2,3-DIMETHYL-5-(3,7,11,15,19,23,27,31,35-NONAMETHYL-2,6,10,14,18,22,26,30,34-HEXATRIACONTANONAENYL-2,5-CYCLOHEXADIENE-1,4-DIONE-2,3-DIMETHYL-5-SOLANESYL-1,4-BENZOQUINONE / PLASTOQUINONE 9 / Plastoquinone


Mass: 749.201 Da / Num. of mol.: 4 / Source method: obtained synthetically / Formula: C53H80O2
#29: Chemical...
ChemComp-UNL / UNKNOWN LIGAND


Num. of mol.: 36 / Source method: obtained synthetically
#30: Chemical
ChemComp-LMG / 1,2-DISTEAROYL-MONOGALACTOSYL-DIGLYCERIDE


Mass: 787.158 Da / Num. of mol.: 10 / Source method: obtained synthetically / Formula: C45H86O10
#33: Chemical ChemComp-BCT / BICARBONATE ION / Bicarbonate


Mass: 61.017 Da / Num. of mol.: 2 / Source method: obtained synthetically / Formula: CHO3 / Comment: pH buffer*YM
#34: Chemical
ChemComp-LHG / 1,2-DIPALMITOYL-PHOSPHATIDYL-GLYCEROLE / Phosphatidylglycerol


Mass: 722.970 Da / Num. of mol.: 10 / Source method: obtained synthetically / Formula: C38H75O10P / Comment: phospholipid*YM
#35: Chemical ChemComp-HEM / PROTOPORPHYRIN IX CONTAINING FE / HEME / Heme B


Mass: 616.487 Da / Num. of mol.: 2 / Source method: obtained synthetically / Formula: C34H32FeN4O4
#36: Chemical ChemComp-MG / MAGNESIUM ION


Mass: 24.305 Da / Num. of mol.: 2 / Source method: isolated from a natural source / Formula: Mg
#37: Chemical ChemComp-HEC / HEME C / Heme C


Mass: 618.503 Da / Num. of mol.: 2 / Source method: obtained synthetically / Formula: C34H34FeN4O4
#38: Chemical ChemComp-RRX / (3R)-beta,beta-caroten-3-ol / beta-Cryptoxanthin / Β-Cryptoxanthin


Mass: 552.872 Da / Num. of mol.: 2 / Source method: obtained synthetically / Formula: C40H56O
#39: Water ChemComp-HOH / water / Water


Mass: 18.015 Da / Num. of mol.: 2432 / Source method: isolated from a natural source / Formula: H2O

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Details

Has ligand of interestN

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Experimental details

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Experiment

ExperimentMethod: ELECTRON MICROSCOPY
EM experimentAggregation state: PARTICLE / 3D reconstruction method: single particle reconstruction

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Sample preparation

ComponentName: PSII dimer / Type: COMPLEX / Entity ID: #1-#20 / Source: NATURAL
Molecular weightValue: 0.725 MDa / Experimental value: NO
Source (natural)Organism: Thermosynechococcus vulcanus (bacteria)
Buffer solutionpH: 6
Buffer component
IDConc.FormulaBuffer-ID
120 mMMES-NaOH1
20.04 %DDM1
SpecimenConc.: 2 mg/ml / Embedding applied: NO / Shadowing applied: NO / Staining applied: NO / Vitrification applied: YES
Specimen supportGrid material: COPPER / Grid mesh size: 200 divisions/in. / Grid type: Quantifoil R1.2/1.3
VitrificationInstrument: FEI VITROBOT MARK IV / Cryogen name: ETHANE / Humidity: 100 % / Chamber temperature: 277 K

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Electron microscopy imaging

MicroscopyModel: JEOL CRYO ARM 300
Electron gunElectron source: FIELD EMISSION GUN / Accelerating voltage: 300 kV / Illumination mode: FLOOD BEAM
Electron lensMode: BRIGHT FIELDBright-field microscopy
Image recordingElectron dose: 83 e/Å2 / Detector mode: COUNTING / Film or detector model: GATAN K2 SUMMIT (4k x 4k)

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Processing

SoftwareName: PHENIX / Version: 1.14_3260: / Classification: refinement
EM software
IDNameVersionCategory
4CTFFIND4.1CTF correction
7UCSF Chimera1.12model fitting
9PHENIX1.13_2998model refinement
13RELION33D reconstruction
CTF correctionType: PHASE FLIPPING AND AMPLITUDE CORRECTION
SymmetryPoint symmetry: C2 (2 fold cyclic)
3D reconstructionResolution: 1.95 Å / Resolution method: FSC 0.143 CUT-OFF / Num. of particles: 174099 / Algorithm: FOURIER SPACE / Symmetry type: POINT
Atomic model buildingProtocol: FLEXIBLE FIT / Space: REAL
Atomic model buildingPDB-ID: 3WU2

3wu2

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