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- PDB-9hez: CryoEM structure of mouse Panx1-R75A, wide conformation -

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Basic information

Entry
Database: PDB / ID: 9hez
TitleCryoEM structure of mouse Panx1-R75A, wide conformation
ComponentsPannexin-1
KeywordsMEMBRANE PROTEIN / Ion Channel / ATP release
Function / homology
Function and homology information


Electric Transmission Across Gap Junctions / The NLRP3 inflammasome / ATP transmembrane transporter activity / ATP transport / leak channel activity / positive regulation of interleukin-1 alpha production / bleb / monoatomic anion transmembrane transport / monoatomic anion channel activity / gap junction ...Electric Transmission Across Gap Junctions / The NLRP3 inflammasome / ATP transmembrane transporter activity / ATP transport / leak channel activity / positive regulation of interleukin-1 alpha production / bleb / monoatomic anion transmembrane transport / monoatomic anion channel activity / gap junction / gap junction channel activity / positive regulation of macrophage cytokine production / response to ATP / response to ischemia / positive regulation of interleukin-1 beta production / calcium channel activity / actin filament binding / calcium ion transport / cell-cell signaling / actin binding / protease binding / scaffold protein binding / transmembrane transporter binding / signaling receptor binding / endoplasmic reticulum membrane / structural molecule activity / endoplasmic reticulum / protein-containing complex / plasma membrane
Similarity search - Function
Pannexin / Innexin / Innexin / Pannexin family profile.
Similarity search - Domain/homology
Biological speciesMus musculus (house mouse)
MethodELECTRON MICROSCOPY / single particle reconstruction / cryo EM / Resolution: 2.74 Å
AuthorsGaullier, G. / Zhang, Q. / Mim, C. / Dahl, G.
Funding support Sweden, 1items
OrganizationGrant numberCountry
Carl Trygger FoundationCTS 21:1630 Sweden
Citation
Journal: To Be Published
Title: Phosphorylation of Pannexin 1 activates ATP release
Authors: Zhang, Q. / Gaullier, G. / Dahl, G. / Mim, C.
#1: Journal: Protein Sci / Year: 2018
Title: UCSF ChimeraX: Meeting modern challenges in visualization and analysis.
Authors: Thomas D Goddard / Conrad C Huang / Elaine C Meng / Eric F Pettersen / Gregory S Couch / John H Morris / Thomas E Ferrin /
Abstract: UCSF ChimeraX is next-generation software for the visualization and analysis of molecular structures, density maps, 3D microscopy, and associated data. It addresses challenges in the size, scope, and ...UCSF ChimeraX is next-generation software for the visualization and analysis of molecular structures, density maps, 3D microscopy, and associated data. It addresses challenges in the size, scope, and disparate types of data attendant with cutting-edge experimental methods, while providing advanced options for high-quality rendering (interactive ambient occlusion, reliable molecular surface calculations, etc.) and professional approaches to software design and distribution. This article highlights some specific advances in the areas of visualization and usability, performance, and extensibility. ChimeraX is free for noncommercial use and is available from http://www.rbvi.ucsf.edu/chimerax/ for Windows, Mac, and Linux.
History
DepositionNov 14, 2024Deposition site: PDBE / Processing site: PDBE
Revision 1.0Nov 26, 2025Provider: repository / Type: Initial release
Revision 1.0Nov 26, 2025Data content type: EM metadata / Data content type: EM metadata / Provider: repository / Type: Initial release
Revision 1.0Nov 26, 2025Data content type: Additional map / Part number: 1 / Data content type: Additional map / Provider: repository / Type: Initial release
Revision 1.0Nov 26, 2025Data content type: FSC / Data content type: FSC / Provider: repository / Type: Initial release
Revision 1.0Nov 26, 2025Data content type: Half map / Part number: 1 / Data content type: Half map / Provider: repository / Type: Initial release
Revision 1.0Nov 26, 2025Data content type: Half map / Part number: 2 / Data content type: Half map / Provider: repository / Type: Initial release
Revision 1.0Nov 26, 2025Data content type: Image / Data content type: Image / Provider: repository / Type: Initial release
Revision 1.0Nov 26, 2025Data content type: Mask / Part number: 1 / Data content type: Mask / Provider: repository / Type: Initial release
Revision 1.0Nov 26, 2025Data content type: Mask / Part number: 2 / Data content type: Mask / Provider: repository / Type: Initial release
Revision 1.0Nov 26, 2025Data content type: Primary map / Data content type: Primary map / Provider: repository / Type: Initial release

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Structure visualization

Structure viewerMolecule:
MolmilJmol/JSmol

Downloads & links

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Assembly

Deposited unit
A: Pannexin-1
B: Pannexin-1
C: Pannexin-1
D: Pannexin-1
E: Pannexin-1
F: Pannexin-1
G: Pannexin-1


Theoretical massNumber of molelcules
Total (without water)351,1697
Polymers351,1697
Non-polymers00
Water00
1


  • Idetical with deposited unit
  • defined by author&software
  • Evidence: electron microscopy
TypeNameSymmetry operationNumber
identity operation1_555x,y,z1

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Components

#1: Protein
Pannexin-1


Mass: 50167.062 Da / Num. of mol.: 7
Source method: isolated from a genetically manipulated source
Source: (gene. exp.) Mus musculus (house mouse) / Gene: Panx1 / Cell line (production host): Sf9 / Production host: Spodoptera frugiperda (fall armyworm) / References: UniProt: Q9JIP4
Has protein modificationY

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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: mouse pannexin 1 R75A / Type: COMPLEX / Entity ID: all / Source: RECOMBINANT
Source (natural)Organism: Mus musculus (house mouse)
Source (recombinant)Organism: Spodoptera frugiperda (fall armyworm) / Strain: Sf9
Buffer solutionpH: 8 / Details: 150 mM NaCl, 50 mM HEPES at pH 8.0, 0.02% GDN
SpecimenConc.: 12 mg/ml / Embedding applied: NO / Shadowing applied: NO / Staining applied: NO / Vitrification applied: YES / Details: Purified from Sf9
Specimen supportDetails: 40mA / Grid mesh size: 300 divisions/in. / Grid type: Quantifoil R1.2/1.3
VitrificationInstrument: FEI VITROBOT MARK IV / Cryogen name: ETHANE / Humidity: 100 % / Chamber temperature: 279 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 defocus max: 2100 nm / Nominal defocus min: 900 nm / Alignment procedure: COMA FREE
Specimen holderSpecimen holder model: FEI TITAN KRIOS AUTOGRID HOLDER
Image recordingElectron dose: 50 e/Å2 / Film or detector model: GATAN K3 BIOQUANTUM (6k x 4k)
EM imaging opticsEnergyfilter name: GIF Bioquantum

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Processing

EM software
IDNameVersionCategory
1Topazparticle selection
2EPUimage acquisition
4cryoSPARC4.1CTF correction
7ISOLDE1.6model fitting
9PHENIX1.20.1model refinement
10cryoSPARC4.1initial Euler assignment
11cryoSPARC4.1final Euler assignment
12cryoSPARC4.1classification
13cryoSPARC4.13D reconstruction
CTF correctionType: PHASE FLIPPING AND AMPLITUDE CORRECTION
Particle selectionNum. of particles selected: 1660043
SymmetryPoint symmetry: C7 (7 fold cyclic)
3D reconstructionResolution: 2.74 Å / Resolution method: FSC 0.143 CUT-OFF / Num. of particles: 23631 / Algorithm: FOURIER SPACE / Symmetry type: POINT
Atomic model buildingProtocol: RIGID BODY FIT / Space: REAL / Details: Interactive fitting in ChimeraX
Atomic model buildingAccession code: Q9JIP4 / Source name: AlphaFold / Type: in silico model

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