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- PDB-9shv: Prefusion-stabilized Hendra virus fusion protein in complex with ... -

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Basic information

Entry
Database: PDB / ID: 9shv
TitlePrefusion-stabilized Hendra virus fusion protein in complex with inhibitory nanobody F123
Components
  • F123 nanobody
  • Fusion glycoprotein F0
KeywordsVIRAL PROTEIN / Fusion protein / antiviral / nanobody
Function / homologyPrecursor fusion glycoprotein F0, Paramyxoviridae / Fusion glycoprotein F0 / host cell surface / fusion of virus membrane with host plasma membrane / viral envelope / symbiont entry into host cell / host cell plasma membrane / virion membrane / Fusion glycoprotein F0
Function and homology information
Biological speciesHenipavirus hendraense
Vicugna pacos (alpaca)
MethodELECTRON MICROSCOPY / single particle reconstruction / cryo EM / Resolution: 2.87 Å
AuthorsKralova, A. / Hanke, L.
Funding supportEuropean Union, Sweden, 3items
OrganizationGrant numberCountry
European Commission101191794European Union
European Research Council (ERC)101165699European Union
Swedish Research Council2021-01723 Sweden
Citation
Journal: To Be Published
Title: Prefusion-stabilized Hendra virus fusion protein in complex with inhibitory nanobody F123
Authors: Kralova, A. / Hanke, L.
#1: Journal: bioRxiv / Year: 2023
Title: Automated model building and protein identification in cryo-EM maps.
Authors: Kiarash Jamali / Lukas Käll / Rui Zhang / Alan Brown / Dari Kimanius / Sjors H W Scheres /
Abstract: Interpreting electron cryo-microscopy (cryo-EM) maps with atomic models requires high levels of expertise and labour-intensive manual intervention. We present ModelAngelo, a machine-learning approach ...Interpreting electron cryo-microscopy (cryo-EM) maps with atomic models requires high levels of expertise and labour-intensive manual intervention. We present ModelAngelo, a machine-learning approach for automated atomic model building in cryo-EM maps. By combining information from the cryo-EM map with information from protein sequence and structure in a single graph neural network, ModelAngelo builds atomic models for proteins that are of similar quality as those generated by human experts. For nucleotides, ModelAngelo builds backbones with similar accuracy as humans. By using its predicted amino acid probabilities for each residue in hidden Markov model sequence searches, ModelAngelo outperforms human experts in the identification of proteins with unknown sequences. ModelAngelo will thus remove bottlenecks and increase objectivity in cryo-EM structure determination.
#2: Journal: Acta Crystallogr D Struct Biol / Year: 2019
Title: Macromolecular structure determination using X-rays, neutrons and electrons: recent developments in Phenix.
Authors: Dorothee Liebschner / Pavel V Afonine / Matthew L Baker / Gábor Bunkóczi / Vincent B Chen / Tristan I Croll / Bradley Hintze / Li Wei Hung / Swati Jain / Airlie J McCoy / Nigel W Moriarty ...Authors: Dorothee Liebschner / Pavel V Afonine / Matthew L Baker / Gábor Bunkóczi / Vincent B Chen / Tristan I Croll / Bradley Hintze / Li Wei Hung / Swati Jain / Airlie J McCoy / Nigel W Moriarty / Robert D Oeffner / Billy K Poon / Michael G Prisant / Randy J Read / Jane S Richardson / David C Richardson / Massimo D Sammito / Oleg V Sobolev / Duncan H Stockwell / Thomas C Terwilliger / Alexandre G Urzhumtsev / Lizbeth L Videau / Christopher J Williams / Paul D Adams /
Abstract: Diffraction (X-ray, neutron and electron) and electron cryo-microscopy are powerful methods to determine three-dimensional macromolecular structures, which are required to understand biological ...Diffraction (X-ray, neutron and electron) and electron cryo-microscopy are powerful methods to determine three-dimensional macromolecular structures, which are required to understand biological processes and to develop new therapeutics against diseases. The overall structure-solution workflow is similar for these techniques, but nuances exist because the properties of the reduced experimental data are different. Software tools for structure determination should therefore be tailored for each method. Phenix is a comprehensive software package for macromolecular structure determination that handles data from any of these techniques. Tasks performed with Phenix include data-quality assessment, map improvement, model building, the validation/rebuilding/refinement cycle and deposition. Each tool caters to the type of experimental data. The design of Phenix emphasizes the automation of procedures, where possible, to minimize repetitive and time-consuming manual tasks, while default parameters are chosen to encourage best practice. A graphical user interface provides access to many command-line features of Phenix and streamlines the transition between programs, project tracking and re-running of previous tasks.
#3: Journal: Acta Crystallogr D Struct Biol / Year: 2018
Title: ISOLDE: a physically realistic environment for model building into low-resolution electron-density maps.
Authors: Tristan Ian Croll /
Abstract: This paper introduces ISOLDE, a new software package designed to provide an intuitive environment for high-fidelity interactive remodelling/refinement of macromolecular models into electron-density ...This paper introduces ISOLDE, a new software package designed to provide an intuitive environment for high-fidelity interactive remodelling/refinement of macromolecular models into electron-density maps. ISOLDE combines interactive molecular-dynamics flexible fitting with modern molecular-graphics visualization and established structural biology libraries to provide an immersive interface wherein the model constantly acts to maintain physically realistic conformations as the user interacts with it by directly tugging atoms with a mouse or haptic interface or applying/removing restraints. In addition, common validation tasks are accelerated and visualized in real time. Using the recently described 3.8 Å resolution cryo-EM structure of the eukaryotic minichromosome maintenance (MCM) helicase complex as a case study, it is demonstrated how ISOLDE can be used alongside other modern refinement tools to avoid common pitfalls of low-resolution modelling and improve the quality of the final model. A detailed analysis of changes between the initial and final model provides a somewhat sobering insight into the dangers of relying on a small number of validation metrics to judge the quality of a low-resolution model.
History
DepositionAug 28, 2025Deposition site: PDBE / Processing site: PDBE
Revision 1.0Sep 9, 2026Provider: repository / Type: Initial release
Revision 1.0Sep 9, 2026Data content type: EM metadata / Data content type: EM metadata / Provider: repository / Type: Initial release

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Structure visualization

Structure viewerMolecule:
MolmilJmol/JSmol

Downloads & links

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Assembly

Deposited unit
Aa: Fusion glycoprotein F0
Ab: Fusion glycoprotein F0
Ac: Fusion glycoprotein F0
Ba: F123 nanobody
Bb: F123 nanobody
Bc: F123 nanobody


Theoretical massNumber of molelcules
Total (without water)230,1916
Polymers230,1916
Non-polymers00
Water00
1


  • Idetical with deposited unit
  • defined by author&software
  • Evidence: electron microscopy, The trimeric arrangement is consistent with previous paramyxovirus F protein structures. The nanobody:protomer binding ratio of 1:1 was confirmed by the 3D cryo-EM ...Evidence: electron microscopy, The trimeric arrangement is consistent with previous paramyxovirus F protein structures. The nanobody:protomer binding ratio of 1:1 was confirmed by the 3D cryo-EM reconstruction and is supported by prior biochemical characterization of similar complexes.
TypeNameSymmetry operationNumber
identity operation1_555x,y,z1

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Components

#1: Protein Fusion glycoprotein F0 / Protein F


Mass: 62128.156 Da / Num. of mol.: 3
Source method: isolated from a genetically manipulated source
Source: (gene. exp.) Henipavirus hendraense / Production host: Homo sapiens (human) / References: UniProt: O89342
#2: Antibody F123 nanobody


Mass: 14602.279 Da / Num. of mol.: 3
Source method: isolated from a genetically manipulated source
Source: (gene. exp.) Vicugna pacos (alpaca) / Production host: Escherichia coli BL21 (bacteria)
Has protein modificationY

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Experimental details

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Experiment

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

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Sample preparation

Component
IDNameTypeEntity IDParent-IDSource
1Prefusion-stabilized Hendra virus F glycoprotein in complex with the neutralizing F123 nanobodyCOMPLEXall0RECOMBINANT
2Fusion glycoprotein FCOMPLEX#11RECOMBINANT
3F123 nanobodyCOMPLEX#21RECOMBINANT
Molecular weight
IDEntity assembly-IDValue (°)Experimental value
110.230279 MDaNO
210.186 MDaNO
310.044 MDaNO
Source (natural)
IDEntity assembly-IDOrganismNcbi tax-ID
21Henipavirus hendraense3052223
32Henipavirus hendraense3052223
43Vicugna pacos (alpaca)30538
Source (recombinant)
IDEntity assembly-IDOrganismNcbi tax-ID
21Homo sapiens (human)9606
32Homo sapiens (human)9606
43Escherichia coli (E. coli)562
Buffer solutionpH: 8
Buffer component
IDConc.NameFormulaBuffer-ID
1200 mMTrisC4H11NO31
2500 mMSucroseC12H22O111
30.65 mMEDTAC10H16N2O81
SpecimenConc.: 0.24 mg/ml / Embedding applied: NO / Shadowing applied: NO / Staining applied: NO / Vitrification applied: YES
VitrificationInstrument: FEI VITROBOT MARK IV / Cryogen name: ETHANE / Humidity: 100 % / Chamber temperature: 295.15 K

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Electron microscopy imaging

Experimental equipment
Model: Titan Krios / Image courtesy: FEI Company
MicroscopyModel: TFS KRIOS
Electron gunElectron source: FIELD EMISSION GUN / Accelerating voltage: 300 kV / Illumination mode: FLOOD BEAM
Electron lensMode: BRIGHT FIELD / Nominal magnification: 130000 X / Nominal defocus max: 1700 nm / Nominal defocus min: 500 nm / Cs: 2.7 mm / C2 aperture diameter: 50 µm
Image recordingElectron dose: 60 e/Å2 / Film or detector model: GATAN K3 (6k x 4k)

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Processing

EM software
IDNameVersionCategory
1Topazparticle selection
2cryoSPARCparticle selection
10PHENIX1.21.2_5419model refinement
11ISOLDE1.9model refinement
15cryoSPARC3D reconstruction
CTF correctionType: PHASE FLIPPING AND AMPLITUDE CORRECTION
SymmetryPoint symmetry: C3 (3 fold cyclic)
3D reconstructionResolution: 2.87 Å / Resolution method: FSC 0.143 CUT-OFF / Num. of particles: 494292 / Symmetry type: POINT
Atomic model buildingDetails: The initial model was generated using ModelAngelo / Source name: Other / Type: in silico model
RefinementCross valid method: NONE
Stereochemistry target values: GeoStd + Monomer Library + CDL v1.2
Displacement parametersBiso mean: 63.06 Å2
Refine LS restraints
Refine-IDTypeDev idealNumber
ELECTRON MICROSCOPYf_bond_d0.00613089
ELECTRON MICROSCOPYf_angle_d0.538117784
ELECTRON MICROSCOPYf_chiral_restr0.0482139
ELECTRON MICROSCOPYf_plane_restr0.00422250
ELECTRON MICROSCOPYf_dihedral_angle_d4.76031816

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