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- PDB-9evx: cryoEM structure of Photosystem II averaged across S2-S3 states a... -

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Basic information

Entry
Database: PDB / ID: 9evx
TitlecryoEM structure of Photosystem II averaged across S2-S3 states at 1.71 Angstrom resolution
Components
  • (Cytochrome b559 subunit ...) x 2
  • (Photosystem II ...) x 16
  • Cytochrome c-550
KeywordsMETAL BINDING PROTEIN / Photosystem II core complex / Mn cluster / water oxidation
Function / homology
Function and homology information


photosystem II assembly / photosystem II oxygen evolving complex / oxygen evolving activity / photosystem II stabilization / photosystem II / photosystem II reaction center / oxidoreductase activity, acting on diphenols and related substances as donors, oxygen as acceptor / photosynthetic electron transport chain / response to herbicide / photosystem II ...photosystem II assembly / photosystem II oxygen evolving complex / oxygen evolving activity / photosystem II stabilization / photosystem II / photosystem II reaction center / oxidoreductase activity, acting on diphenols and related substances as donors, oxygen as acceptor / photosynthetic electron transport chain / response to herbicide / photosystem II / extrinsic component of membrane / plasma membrane-derived thylakoid membrane / chlorophyll binding / photosynthesis, light reaction / electron transporter, transferring electrons within the cyclic electron transport pathway of photosynthesis activity / phosphate ion binding / photosynthetic electron transport in photosystem II / photosynthesis / respiratory electron transport chain / electron transfer activity / protein stabilization / iron ion binding / heme binding / metal ion binding
Similarity search - Function
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 PsbO, manganese-stabilising ...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 PsbO, manganese-stabilising / Photosystem II reaction centre protein Ycf12 / Manganese-stabilising protein / photosystem II polypeptide / Photosystem II complex subunit Ycf12 / Photosystem II PsbX, type 1 subfamily / Photosystem II reaction centre M protein (PsbM) / Photosystem II PsbM superfamily / Photosystem II PsbM / Photosystem II PsbZ, reaction centre / Photosystem II PsbZ superfamily / YCF9 / Photosystem II PsbX / Photosystem II reaction centre X protein (PsbX) / Photosystem II CP43 reaction centre protein superfamily / Photosystem II PsbT / Photosystem II PsbL / Photosystem II PsbL superfamily / Photosystem II PsbT superfamily / Photosystem II reaction centre T protein / PsbL protein / Photosystem II CP43 reaction centre protein / Photosystem II PsbK / 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 / Chem-SQD / STEARIC ACID / Photosystem II extrinsic protein V / Photosystem II extrinsic protein O / Photosystem II protein D1 1 / Photosystem II reaction center protein J / Photosystem II D2 protein / Photosystem II reaction center protein M / Photosystem II reaction center protein Z / Photosystem II CP43 reaction center protein / Photosystem II reaction center protein L / Cytochrome b559 subunit beta / Cytochrome b559 subunit alpha / Photosystem II reaction center protein T / Photosystem II CP47 reaction center protein / Photosystem II reaction center protein H / Photosystem II reaction center protein Psb30 / Photosystem II reaction center protein I / Photosystem II reaction center protein K / Photosystem II extrinsic protein U / Photosystem II reaction center protein X
Similarity search - Component
Biological speciesThermosynechococcus vestitus BP-1 (bacteria)
MethodELECTRON MICROSCOPY / single particle reconstruction / cryo EM / Resolution: 1.71 Å
AuthorsHussein, R. / Graca, A. / Zouni, A. / Messinger, J. / Schroder, W.P.
Funding support Sweden, Germany, 3items
OrganizationGrant numberCountry
Swedish Research Council2020-03809 Sweden
Germanys Excellence Strategy2008/1-390540038 Germany
German Research Foundation (DFG)SFB1078 Germany
CitationJournal: Science / Year: 2024
Title: Cryo-electron microscopy reveals hydrogen positions and water networks in photosystem II.
Authors: Rana Hussein / André Graça / Jack Forsman / A Orkun Aydin / Michael Hall / Julia Gaetcke / Petko Chernev / Petra Wendler / Holger Dobbek / Johannes Messinger / Athina Zouni / Wolfgang P Schröder /
Abstract: Photosystem II starts the photosynthetic electron transport chain that converts solar energy into chemical energy and thus sustains life on Earth. It catalyzes two chemical reactions: water oxidation ...Photosystem II starts the photosynthetic electron transport chain that converts solar energy into chemical energy and thus sustains life on Earth. It catalyzes two chemical reactions: water oxidation to molecular oxygen and plastoquinone reduction. Coupling of electron and proton transfer is crucial for efficiency; however, the molecular basis of these processes remains speculative owing to uncertain water binding sites and the lack of experimentally determined hydrogen positions. We thus collected high-resolution cryo-electron microscopy data of fully hydrated photosystem II from the thermophilic cyanobacterium to a final resolution of 1.71 angstroms. The structure reveals several previously undetected partially occupied water binding sites and more than half of the hydrogen and proton positions. This clarifies the pathways of substrate water binding and plastoquinone B protonation.
History
DepositionApr 2, 2024Deposition site: PDBE / Processing site: PDBE
Revision 1.0Jun 12, 2024Provider: repository / Type: Initial release
Revision 1.1Jul 3, 2024Group: Data collection / Database references / Category: citation / citation_author / em_admin
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 / _citation_author.name / _em_admin.last_update

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Structure visualization

Structure viewerMolecule:
MolmilJmol/JSmol

Downloads & links

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Assembly

Deposited unit
A: Photosystem II protein D1 1
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
X: Photosystem II reaction center X protein
Y: Photosystem II reaction center protein Ycf12
Z: Photosystem II reaction center protein Z
a: Photosystem II protein D1 1
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
x: Photosystem II reaction center X protein
y: Photosystem II reaction center protein Ycf12
z: Photosystem II reaction center protein Z
hetero molecules


Theoretical massNumber of molelcules
Total (without water)759,946250
Polymers622,38438
Non-polymers137,563212
Water43,3262405
1


  • Idetical with deposited unit
  • defined by author&software
  • Evidence: electron microscopy, not applicable
TypeNameSymmetry operationNumber
identity operation1_555x,y,z1

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Components

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Photosystem II ... , 16 types, 32 molecules AaBbCcDdHhIiJjKkLlMmOoTtUuXxYyZz

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


Mass: 38265.625 Da / Num. of mol.: 2 / Source method: isolated from a natural source
Source: (natural) Thermosynechococcus vestitus BP-1 (bacteria)
References: UniProt: P0A444, photosystem II
#2: Protein Photosystem II CP47 reaction center protein / PSII 47 kDa protein / Protein CP-47


Mass: 56656.457 Da / Num. of mol.: 2 / Source method: isolated from a natural source
Source: (natural) Thermosynechococcus vestitus BP-1 (bacteria)
References: UniProt: Q8DIQ1
#3: Protein Photosystem II CP43 reaction center protein / PSII 43 kDa protein / Protein CP-43


Mass: 50287.500 Da / Num. of mol.: 2 / Source method: isolated from a natural source
Source: (natural) Thermosynechococcus vestitus BP-1 (bacteria)
References: UniProt: Q8DIF8
#4: Protein Photosystem II D2 protein / PSII D2 protein / Photosystem II Q(A) protein


Mass: 39388.156 Da / Num. of mol.: 2 / Source method: isolated from a natural source
Source: (natural) Thermosynechococcus vestitus BP-1 (bacteria)
References: UniProt: Q8CM25, photosystem II
#7: Protein Photosystem II reaction center protein H / PSII-H


Mass: 7314.724 Da / Num. of mol.: 2 / Mutation: F41C / Source method: isolated from a natural source
Source: (natural) Thermosynechococcus vestitus BP-1 (bacteria)
References: UniProt: Q8DJ43
#8: Protein/peptide Photosystem II reaction center protein I / PSII-I / PSII 4.4 kDa protein


Mass: 4438.255 Da / Num. of mol.: 2 / Source method: isolated from a natural source
Source: (natural) Thermosynechococcus vestitus BP-1 (bacteria)
References: UniProt: Q8DJZ6
#9: Protein/peptide Photosystem II reaction center protein J / PSII-J


Mass: 4105.908 Da / Num. of mol.: 2 / Source method: isolated from a natural source
Source: (natural) Thermosynechococcus vestitus BP-1 (bacteria)
References: UniProt: P59087
#10: Protein/peptide Photosystem II reaction center protein K / PSII-K


Mass: 5028.083 Da / Num. of mol.: 2 / Source method: isolated from a natural source
Source: (natural) Thermosynechococcus vestitus BP-1 (bacteria)
References: UniProt: Q9F1K9
#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 vestitus BP-1 (bacteria)
References: UniProt: Q8DIN8
#12: Protein/peptide Photosystem II reaction center protein M / PSII-M


Mass: 4009.682 Da / Num. of mol.: 2 / Source method: isolated from a natural source
Source: (natural) Thermosynechococcus vestitus BP-1 (bacteria)
References: UniProt: Q8DHA7
#13: Protein Photosystem II manganese-stabilizing polypeptide / MSP


Mass: 29637.443 Da / Num. of mol.: 2 / Source method: isolated from a natural source
Source: (natural) Thermosynechococcus vestitus BP-1 (bacteria)
References: UniProt: P0A431
#14: Protein/peptide Photosystem II reaction center protein T / PSII-T / PSII-Tc


Mass: 3906.738 Da / Num. of mol.: 2 / Source method: isolated from a natural source
Source: (natural) Thermosynechococcus vestitus BP-1 (bacteria)
References: UniProt: Q8DIQ0
#15: Protein Photosystem II 12 kDa extrinsic protein / PS II complex 12 kDa extrinsic protein / PSII-U


Mass: 15030.986 Da / Num. of mol.: 2 / Source method: isolated from a natural source
Source: (natural) Thermosynechococcus vestitus BP-1 (bacteria)
References: UniProt: Q9F1L5
#17: Protein/peptide Photosystem II reaction center X protein


Mass: 4322.226 Da / Num. of mol.: 2 / Source method: isolated from a natural source
Source: (natural) Thermosynechococcus vestitus BP-1 (bacteria)
References: UniProt: Q9F1R6
#18: Protein/peptide Photosystem II reaction center protein Ycf12


Mass: 5039.143 Da / Num. of mol.: 2 / Source method: isolated from a natural source
Source: (natural) Thermosynechococcus vestitus BP-1 (bacteria)
References: UniProt: Q8DJI1
#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 vestitus BP-1 (bacteria)
References: UniProt: Q8DHJ2

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

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


Mass: 9580.840 Da / Num. of mol.: 2 / Source method: isolated from a natural source
Source: (natural) Thermosynechococcus vestitus BP-1 (bacteria)
References: UniProt: Q8DIP0
#6: Protein/peptide Cytochrome b559 subunit beta / PSII reaction center subunit VI


Mass: 5067.900 Da / Num. of mol.: 2 / Source method: isolated from a natural source
Source: (natural) Thermosynechococcus vestitus BP-1 (bacteria)
References: UniProt: Q8DIN9

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Protein , 1 types, 2 molecules Vv

#16: Protein Cytochrome c-550 / Cytochrome c-549 / Cytochrome c550 / Low-potential cytochrome c


Mass: 18046.943 Da / Num. of mol.: 2 / Source method: isolated from a natural source
Source: (natural) Thermosynechococcus vestitus BP-1 (bacteria)
References: UniProt: P0A386

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Sugars , 2 types, 24 molecules

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


Type: saccharide / Mass: 949.299 Da / Num. of mol.: 10 / Source method: obtained synthetically / Formula: C51H96O15
#32: Sugar
ChemComp-LMT / DODECYL-BETA-D-MALTOSIDE


Type: D-saccharide / Mass: 510.615 Da / Num. of mol.: 14 / Source method: obtained synthetically / Formula: C24H46O11 / Comment: detergent*YM

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Non-polymers , 15 types, 2593 molecules

#20: Chemical ChemComp-FE2 / FE (II) ION


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


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


Mass: 893.489 Da / Num. of mol.: 70 / Source method: obtained synthetically / Formula: C55H72MgN4O5
#23: Chemical...
ChemComp-BCR / BETA-CAROTENE


Mass: 536.873 Da / Num. of mol.: 22 / Source method: obtained synthetically / Formula: C40H56
#24: 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


Mass: 749.201 Da / Num. of mol.: 4 / Source method: obtained synthetically / Formula: C53H80O2 / Feature type: SUBJECT OF INVESTIGATION
#25: Chemical...
ChemComp-STE / STEARIC ACID


Mass: 284.477 Da / Num. of mol.: 42 / Source method: obtained synthetically / Formula: C18H36O2
#26: Chemical
ChemComp-LMG / 1,2-DISTEAROYL-MONOGALACTOSYL-DIGLYCERIDE


Mass: 787.158 Da / Num. of mol.: 14 / Source method: obtained synthetically / Formula: C45H86O10
#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
#29: Chemical ChemComp-OEX / CA-MN4-O5 CLUSTER


Mass: 339.827 Da / Num. of mol.: 2 / Source method: obtained synthetically / Formula: CaMn4O5 / Feature type: SUBJECT OF INVESTIGATION
#30: Chemical
ChemComp-PHO / PHEOPHYTIN A


Mass: 871.200 Da / Num. of mol.: 4 / Source method: obtained synthetically / Formula: C55H74N4O5
#31: Chemical
ChemComp-LHG / 1,2-DIPALMITOYL-PHOSPHATIDYL-GLYCEROLE


Mass: 722.970 Da / Num. of mol.: 10 / Source method: obtained synthetically / Formula: C38H75O10P / Comment: phospholipid*YM
#33: Chemical ChemComp-BCT / BICARBONATE ION


Mass: 61.017 Da / Num. of mol.: 2 / Source method: obtained synthetically / Formula: CHO3 / Comment: pH buffer*YM
#34: Chemical ChemComp-HEM / PROTOPORPHYRIN IX CONTAINING FE / HEME


Mass: 616.487 Da / Num. of mol.: 2 / Source method: obtained synthetically / Formula: C34H32FeN4O4
#35: Chemical ChemComp-HEC / HEME C


Mass: 618.503 Da / Num. of mol.: 2 / Source method: obtained synthetically / Formula: C34H34FeN4O4
#36: Water ChemComp-HOH / water


Mass: 18.015 Da / Num. of mol.: 2405 / Source method: isolated from a natural source / Formula: H2O

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Details

Has ligand of interestY

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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: dimeric core complex of PSII dPSII / Type: COMPLEX / Entity ID: #1-#19 / Source: NATURAL
Molecular weightValue: 750 kDa/nm / Experimental value: YES
Source (natural)Organism: Thermosynechococcus vestitus BP-1 (bacteria)
Buffer solutionpH: 6.5 / Details: 100mM MES pH6.5, 5mM CaCl2, 5% glycerol, 0.03% DDM
Buffer component
IDConc.NameFormulaBuffer-ID
1100 mMMESC6H13NO4S1
25 mMcalcium chlorideCaCl21
35 %GlycerolC3H8O31
40.03 %DODECYL-BETA-D-MALTOSIDEC24H46O111
SpecimenConc.: 42.8 mg/ml / Embedding applied: NO / Shadowing applied: NO / Staining applied: NO / Vitrification applied: YES / Details: highly purified monodisperse sample of dPSIIcc
Specimen supportGrid material: GOLD / Grid mesh size: 300 divisions/in. / Grid type: UltrAuFoil R1.2/1.3
VitrificationInstrument: FEI VITROBOT MARK IV / Cryogen name: ETHANE / Humidity: 100 % / Chamber temperature: 277.15 K
Details: The sample-on-grid was illuminated with one and two flashes of light

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Electron microscopy imaging

Experimental equipment
Model: Titan Krios / Image courtesy: FEI Company
MicroscopyModel: FEI TITAN KRIOS
Electron gunElectron source: FIELD EMISSION GUN / Accelerating voltage: 300 kV / Illumination mode: FLOOD BEAM
Electron lensMode: BRIGHT FIELD / Nominal defocus max: 2000 nm / Nominal defocus min: 800 nm
Specimen holderCryogen: NITROGEN / Specimen holder model: FEI TITAN KRIOS AUTOGRID HOLDER
Image recordingElectron dose: 50 e/Å2 / Film or detector model: FEI FALCON IV (4k x 4k)

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Processing

EM softwareName: PHENIX / Version: 1.20.1_4487: / Category: model refinement
CTF correctionType: PHASE FLIPPING AND AMPLITUDE CORRECTION
SymmetryPoint symmetry: C2 (2 fold cyclic)
3D reconstructionResolution: 1.71 Å / Resolution method: FSC 0.143 CUT-OFF / Num. of particles: 631270 / Symmetry type: POINT
Atomic model buildingSpace: REAL
Refine LS restraints
Refine-IDTypeDev idealNumber
ELECTRON MICROSCOPYf_bond_d0.00552234
ELECTRON MICROSCOPYf_angle_d1.0171523
ELECTRON MICROSCOPYf_dihedral_angle_d16.14718425
ELECTRON MICROSCOPYf_chiral_restr0.0467088
ELECTRON MICROSCOPYf_plane_restr0.0058605

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