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- PDB-7w9k: Cryo-EM structure of human Nav1.7-beta1-beta2 complex at 2.2 angs... -

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Basic information

Entry
Database: PDB / ID: 7w9k
TitleCryo-EM structure of human Nav1.7-beta1-beta2 complex at 2.2 angstrom resolution
Components
  • (Sodium channel subunit beta- ...) x 2
  • Sodium channel protein type 9 subunit alpha
KeywordsMEMBRANE PROTEIN / Nav1.7 / SCN9A / cryo-EM
Function / homology
Function and homology information


response to pyrethroid / corticospinal neuron axon guidance / positive regulation of voltage-gated sodium channel activity / action potential propagation / detection of mechanical stimulus involved in sensory perception / voltage-gated sodium channel activity involved in cardiac muscle cell action potential / regulation of atrial cardiac muscle cell membrane depolarization / membrane depolarization during Purkinje myocyte cell action potential / voltage-gated potassium channel activity involved in ventricular cardiac muscle cell action potential repolarization / cardiac conduction ...response to pyrethroid / corticospinal neuron axon guidance / positive regulation of voltage-gated sodium channel activity / action potential propagation / detection of mechanical stimulus involved in sensory perception / voltage-gated sodium channel activity involved in cardiac muscle cell action potential / regulation of atrial cardiac muscle cell membrane depolarization / membrane depolarization during Purkinje myocyte cell action potential / voltage-gated potassium channel activity involved in ventricular cardiac muscle cell action potential repolarization / cardiac conduction / membrane depolarization during cardiac muscle cell action potential / membrane depolarization during action potential / positive regulation of sodium ion transport / regulation of sodium ion transmembrane transport / axon initial segment / regulation of ventricular cardiac muscle cell membrane repolarization / cardiac muscle cell action potential involved in contraction / node of Ranvier / voltage-gated sodium channel complex / sodium channel inhibitor activity / locomotion / neuronal action potential propagation / Interaction between L1 and Ankyrins / voltage-gated sodium channel activity / detection of temperature stimulus involved in sensory perception of pain / Phase 0 - rapid depolarisation / behavioral response to pain / regulation of heart rate by cardiac conduction / intercalated disc / sodium channel regulator activity / membrane depolarization / neuronal action potential / cardiac muscle contraction / axon terminus / sensory perception of pain / T-tubule / sodium ion transmembrane transport / axon guidance / post-embryonic development / circadian rhythm / positive regulation of neuron projection development / response to toxic substance / Sensory perception of sweet, bitter, and umami (glutamate) taste / nervous system development / response to heat / perikaryon / chemical synaptic transmission / gene expression / transmembrane transporter binding / cell adhesion / inflammatory response / axon / synapse / extracellular region / plasma membrane
Similarity search - Function
Sodium channel subunit beta-1/beta-3 / Myelin P0 protein-related / Voltage-gated Na+ ion channel, cytoplasmic domain / Cytoplasmic domain of voltage-gated Na+ ion channel / Sodium ion transport-associated / Voltage-gated sodium channel alpha subunit, inactivation gate / Sodium ion transport-associated / SCN5A-like, C-terminal IQ motif / Voltage gated sodium channel, alpha subunit / Voltage-gated cation channel calcium and sodium ...Sodium channel subunit beta-1/beta-3 / Myelin P0 protein-related / Voltage-gated Na+ ion channel, cytoplasmic domain / Cytoplasmic domain of voltage-gated Na+ ion channel / Sodium ion transport-associated / Voltage-gated sodium channel alpha subunit, inactivation gate / Sodium ion transport-associated / SCN5A-like, C-terminal IQ motif / Voltage gated sodium channel, alpha subunit / Voltage-gated cation channel calcium and sodium / Short calmodulin-binding motif containing conserved Ile and Gln residues. / IQ motif, EF-hand binding site / Voltage-dependent channel domain superfamily / Immunoglobulin V-set domain / Immunoglobulin V-set domain / Ion transport domain / Ion transport protein / Immunoglobulin subtype / Immunoglobulin / Ig-like domain profile. / Immunoglobulin-like domain / Immunoglobulin-like domain superfamily / Immunoglobulin-like fold
Similarity search - Domain/homology
Chem-1PW / 1-O-OCTADECYL-SN-GLYCERO-3-PHOSPHOCHOLINE / Chem-P5S / 1,2-DIOLEOYL-SN-GLYCERO-3-PHOSPHOCHOLINE / CHOLESTEROL HEMISUCCINATE / Sodium channel regulatory subunit beta-2 / Sodium channel regulatory subunit beta-1 / Sodium channel protein type 9 subunit alpha
Similarity search - Component
Biological speciesHomo sapiens (human)
MethodELECTRON MICROSCOPY / single particle reconstruction / cryo EM / Resolution: 2.2 Å
AuthorsYan, N. / Huang, G. / Liu, D. / Wei, P. / Shen, H.
Funding support China, 1items
OrganizationGrant numberCountry
Ministry of Science and Technology (MoST, China) China
CitationJournal: Cell Rep / Year: 2022
Title: High-resolution structures of human Na1.7 reveal gating modulation through α-π helical transition of S6.
Authors: Gaoxingyu Huang / Dongliang Liu / Weipeng Wang / Qiurong Wu / Jiaofeng Chen / Xiaojing Pan / Huaizong Shen / Nieng Yan /
Abstract: Na1.7 represents a preeminent target for next-generation analgesics for its critical role in pain sensation. Here we report a 2.2-Å resolution cryo-EM structure of wild-type (WT) Na1.7 complexed ...Na1.7 represents a preeminent target for next-generation analgesics for its critical role in pain sensation. Here we report a 2.2-Å resolution cryo-EM structure of wild-type (WT) Na1.7 complexed with the β1 and β2 subunits that reveals several previously indiscernible cytosolic segments. Reprocessing of the cryo-EM data for our reported structures of Na1.7(E406K) bound to various toxins identifies two distinct conformations of S6, one composed of α helical turns only and the other containing a π helical turn in the middle. The structure of ligand-free Na1.7(E406K), determined at 3.5-Å resolution, is identical to the WT channel, confirming that binding of Huwentoxin IV or Protoxin II to VSD allosterically induces the α → π transition of S6. The local secondary structural shift leads to contraction of the intracellular gate, closure of the fenestration on the interface of repeats I and IV, and rearrangement of the binding site for the fast inactivation motif.
History
DepositionDec 9, 2021Deposition site: PDBJ / Processing site: PDBJ
Revision 1.0Jun 1, 2022Provider: repository / Type: Initial release
Revision 1.0Jun 1, 2022Data content type: EM metadata / Data content type: EM metadata / Provider: repository / Type: Initial release
Revision 1.0Jun 1, 2022Data content type: Image / Data content type: Image / Provider: repository / Type: Initial release
Revision 1.0Jun 1, 2022Data content type: Primary map / Data content type: Primary map / Provider: repository / Type: Initial release
Revision 1.0Jun 1, 2022Data content type: Image / Data content type: Image / Provider: repository / Type: Initial release
Revision 1.0Jun 1, 2022Data content type: Primary map / Data content type: Primary map / Provider: repository / Type: Initial release
Revision 1.1Oct 16, 2024Group: Data collection / Structure summary
Category: chem_comp_atom / chem_comp_bond ...chem_comp_atom / chem_comp_bond / em_admin / pdbx_entry_details / pdbx_modification_feature
Item: _em_admin.last_update / _pdbx_entry_details.has_protein_modification
Revision 1.2Jun 18, 2025Group: Data collection / Category: em_admin / em_software / Item: _em_admin.last_update / _em_software.name
Revision 1.1Jun 18, 2025Data content type: EM metadata / Data content type: EM metadata / EM metadata / Group: Data processing / Experimental summary / Data content type: EM metadata / EM metadata / Category: em_admin / em_software / Data content type: EM metadata / EM metadata / Item: _em_admin.last_update / _em_software.name

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Structure visualization

Structure viewerMolecule:
MolmilJmol/JSmol

Downloads & links

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Assembly

Deposited unit
A: Sodium channel protein type 9 subunit alpha
B: Sodium channel subunit beta-1
C: Sodium channel subunit beta-2
hetero molecules


Theoretical massNumber of molelcules
Total (without water)300,56143
Polymers280,3003
Non-polymers20,26140
Water1629
1


  • Idetical with deposited unit
  • defined by author
TypeNameSymmetry operationNumber
identity operation1_5551

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Components

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Protein , 1 types, 1 molecules A

#1: Protein Sodium channel protein type 9 subunit alpha / Neuroendocrine sodium channel / hNE-Na / Peripheral sodium channel 1 / PN1 / Sodium channel protein ...Neuroendocrine sodium channel / hNE-Na / Peripheral sodium channel 1 / PN1 / Sodium channel protein type IX subunit alpha / Voltage-gated sodium channel subunit alpha Nav1.7


Mass: 231211.859 Da / Num. of mol.: 1
Source method: isolated from a genetically manipulated source
Source: (gene. exp.) Homo sapiens (human) / Gene: SCN9A, NENA / Production host: Homo sapiens (human) / References: UniProt: Q15858

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Sodium channel subunit beta- ... , 2 types, 2 molecules BC

#2: Protein Sodium channel subunit beta-1


Mass: 24732.115 Da / Num. of mol.: 1
Source method: isolated from a genetically manipulated source
Source: (gene. exp.) Homo sapiens (human) / Gene: SCN1B / Production host: Homo sapiens (human) / References: UniProt: Q07699
#3: Protein Sodium channel subunit beta-2


Mass: 24355.859 Da / Num. of mol.: 1
Source method: isolated from a genetically manipulated source
Source: (gene. exp.) Homo sapiens (human) / Gene: SCN2B, UNQ326/PRO386 / Production host: Homo sapiens (human) / References: UniProt: O60939

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Sugars , 2 types, 8 molecules

#4: Polysaccharide 2-acetamido-2-deoxy-beta-D-glucopyranose-(1-4)-2-acetamido-2-deoxy-beta-D-glucopyranose


Type: oligosaccharide / Mass: 424.401 Da / Num. of mol.: 3
Source method: isolated from a genetically manipulated source
DescriptorTypeProgram
DGlcpNAcb1-4DGlcpNAcb1-ROHGlycam Condensed SequenceGMML 1.0
WURCS=2.0/1,2,1/[a2122h-1b_1-5_2*NCC/3=O]/1-1/a4-b1WURCSPDB2Glycan 1.1.0
[][D-1-deoxy-GlcpNAc]{[(4+1)][b-D-GlcpNAc]{}}LINUCSPDB-CARE
#5: Sugar
ChemComp-NAG / 2-acetamido-2-deoxy-beta-D-glucopyranose / N-acetyl-beta-D-glucosamine / 2-acetamido-2-deoxy-beta-D-glucose / 2-acetamido-2-deoxy-D-glucose / 2-acetamido-2-deoxy-glucose / N-ACETYL-D-GLUCOSAMINE


Type: D-saccharide, beta linking / Mass: 221.208 Da / Num. of mol.: 5
Source method: isolated from a genetically manipulated source
Formula: C8H15NO6 / Feature type: SUBJECT OF INVESTIGATION
IdentifierTypeProgram
DGlcpNAcbCONDENSED IUPAC CARBOHYDRATE SYMBOLGMML 1.0
N-acetyl-b-D-glucopyranosamineCOMMON NAMEGMML 1.0
b-D-GlcpNAcIUPAC CARBOHYDRATE SYMBOLPDB-CARE 1.0
GlcNAcSNFG CARBOHYDRATE SYMBOLGMML 1.0

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Non-polymers , 8 types, 41 molecules

#6: Chemical ChemComp-P5S / O-[(R)-{[(2R)-2,3-bis(octadecanoyloxy)propyl]oxy}(hydroxy)phosphoryl]-L-serine / phosphatidyl serine


Mass: 792.075 Da / Num. of mol.: 3 / Source method: obtained synthetically / Formula: C42H82NO10P
#7: Chemical
ChemComp-Y01 / CHOLESTEROL HEMISUCCINATE


Mass: 486.726 Da / Num. of mol.: 6 / Source method: obtained synthetically / Formula: C31H50O4
#8: Chemical ChemComp-9Z9 / (3beta,14beta,17beta,25R)-3-[4-methoxy-3-(methoxymethyl)butoxy]spirost-5-en


Mass: 544.805 Da / Num. of mol.: 1 / Source method: obtained synthetically / Formula: C34H56O5 / Comment: detergent*YM
#9: Chemical ChemComp-NA / SODIUM ION


Mass: 22.990 Da / Num. of mol.: 1 / Source method: obtained synthetically / Formula: Na
#10: Chemical
ChemComp-LPE / 1-O-OCTADECYL-SN-GLYCERO-3-PHOSPHOCHOLINE / LPC-ETHER


Mass: 510.708 Da / Num. of mol.: 15 / Source method: obtained synthetically / Formula: C26H57NO6P
#11: Chemical ChemComp-1PW / (2S,3R,4E)-2-(acetylamino)-3-hydroxyoctadec-4-en-1-yl dihydrogen phosphate


Mass: 421.508 Da / Num. of mol.: 1 / Source method: obtained synthetically / Formula: C20H40NO6P
#12: Chemical
ChemComp-PCW / 1,2-DIOLEOYL-SN-GLYCERO-3-PHOSPHOCHOLINE / (Z,Z)-4-HYDROXY-N,N,N-TRIMETHYL-10-OXO-7-[(1-OXO-9-OCTADECENYL)OXY]-3,5,9-TRIOXA-4-PHOSPHAHEPTACOS-18-EN-1-AMINIUM-4-OXIDE


Mass: 787.121 Da / Num. of mol.: 5 / Source method: obtained synthetically / Formula: C44H85NO8P / Comment: DOPC, phospholipid*YM
#13: Water ChemComp-HOH / water


Mass: 18.015 Da / Num. of mol.: 9 / Source method: isolated from a natural source / Formula: H2O

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Details

Has ligand of interestY
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: Human voltage-gated sodium channel Nav1.7 in complex with auxiliary beta subunits
Type: COMPLEX / Entity ID: #1-#3 / Source: RECOMBINANT
Molecular weightValue: 279.99 kDa/nm / Experimental value: NO
Source (natural)Organism: Homo sapiens (human)
Source (recombinant)Organism: Homo sapiens (human)
Buffer solutionpH: 7.4
SpecimenEmbedding applied: NO / Shadowing applied: NO / Staining applied: NO / Vitrification applied: YES
VitrificationCryogen name: ETHANE

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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: 1800 nm / Nominal defocus min: 1500 nm
Image recordingElectron dose: 50 e/Å2 / Film or detector model: GATAN K3 (6k x 4k)

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Processing

SoftwareName: PHENIX / Version: 1.17.1_3660: / Classification: refinement
EM softwareName: PHENIX / Category: model refinement
CTF correctionType: PHASE FLIPPING AND AMPLITUDE CORRECTION
3D reconstructionResolution: 2.2 Å / Resolution method: FSC 0.143 CUT-OFF / Num. of particles: 785228 / Symmetry type: POINT
Refine LS restraints
Refine-IDTypeDev idealNumber
ELECTRON MICROSCOPYf_bond_d0.00310965
ELECTRON MICROSCOPYf_angle_d0.59814855
ELECTRON MICROSCOPYf_dihedral_angle_d19.0141464
ELECTRON MICROSCOPYf_chiral_restr0.0421742
ELECTRON MICROSCOPYf_plane_restr0.0041798

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