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- EMDB-38483: Voltage-gated sodium channel Nav1.7 variant M2 -

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Basic information

Entry
Database: EMDB / ID: EMD-38483
TitleVoltage-gated sodium channel Nav1.7 variant M2
Map dataCryo-EM map for Nav1.7-M2
Sample
  • Complex: Voltage-gated sodium channel Nav1.7-M2
    • Protein or peptide: Sodium channel protein type 9 subunit alpha
    • Protein or peptide: Sodium channel subunit beta-1
    • Protein or peptide: Sodium channel subunit beta-2
  • Ligand: 2-acetamido-2-deoxy-beta-D-glucopyranose
  • Ligand: 1-O-OCTADECYL-SN-GLYCERO-3-PHOSPHOCHOLINE
  • Ligand: 1,2-DIOLEOYL-SN-GLYCERO-3-PHOSPHOCHOLINE
KeywordsVoltage-gated sodium channel / MEMBRANE PROTEIN
Function / homology
Function and homology information


corticospinal neuron axon guidance / positive regulation of voltage-gated sodium channel activity / action potential propagation / response to pyrethroid / detection of mechanical stimulus involved in sensory perception / voltage-gated sodium channel activity involved in cardiac muscle cell action potential / voltage-gated potassium channel activity involved in ventricular cardiac muscle cell action potential repolarization / membrane depolarization during Purkinje myocyte cell action potential / cardiac conduction / regulation of sodium ion transmembrane transport ...corticospinal neuron axon guidance / positive regulation of voltage-gated sodium channel activity / action potential propagation / response to pyrethroid / detection of mechanical stimulus involved in sensory perception / voltage-gated sodium channel activity involved in cardiac muscle cell action potential / voltage-gated potassium channel activity involved in ventricular cardiac muscle cell action potential repolarization / membrane depolarization during Purkinje myocyte cell action potential / cardiac conduction / regulation of sodium ion transmembrane transport / regulation of atrial cardiac muscle cell membrane depolarization / membrane depolarization during cardiac muscle cell action potential / membrane depolarization during action potential / positive regulation of sodium ion transport / axon initial segment / cardiac muscle cell action potential involved in contraction / locomotion / regulation of ventricular cardiac muscle cell membrane repolarization / node of Ranvier / voltage-gated sodium channel complex / sodium channel inhibitor activity / neuronal action potential propagation / Interaction between L1 and Ankyrins / voltage-gated sodium channel activity / Phase 0 - rapid depolarisation / regulation of heart rate by cardiac conduction / behavioral response to pain / detection of temperature stimulus involved in sensory perception of pain / membrane depolarization / intercalated disc / sodium channel regulator activity / neuronal action potential / cardiac muscle contraction / axon terminus / sensory perception of pain / T-tubule / sodium ion transmembrane transport / axon guidance / post-embryonic development / positive regulation of neuron projection development / response to toxic substance / circadian rhythm / Sensory perception of sweet, bitter, and umami (glutamate) taste / nervous system development / response to heat / gene expression / chemical synaptic transmission / perikaryon / 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 / SCN5A-like, C-terminal IQ motif / Sodium ion transport-associated / Voltage-gated sodium channel alpha subunit, inactivation gate / Sodium ion transport-associated / 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 / SCN5A-like, C-terminal IQ motif / Sodium ion transport-associated / Voltage-gated sodium channel alpha subunit, inactivation gate / Sodium ion transport-associated / 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
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)
Methodsingle particle reconstruction / cryo EM / Resolution: 3.37 Å
AuthorsYan N / Li Z / Wu Q / Huang G
Funding support China, 1 items
OrganizationGrant numberCountry
National Natural Science Foundation of China (NSFC)32330052 China
CitationJournal: Proc Natl Acad Sci U S A / Year: 2024
Title: Dissection of the structure-function relationship of Na channels.
Authors: Zhangqiang Li / Qiurong Wu / Gaoxingyu Huang / Xueqin Jin / Jiaao Li / Xiaojing Pan / Nieng Yan /
Abstract: Voltage-gated sodium channels (Na) undergo conformational shifts in response to membrane potential changes, a mechanism known as the electromechanical coupling. To delineate the structure-function ...Voltage-gated sodium channels (Na) undergo conformational shifts in response to membrane potential changes, a mechanism known as the electromechanical coupling. To delineate the structure-function relationship of human Na channels, we have performed systematic structural analysis using human Na1.7 as a prototype. Guided by the structural differences between wild-type (WT) Na1.7 and an eleven mutation-containing variant, designated Na1.7-M11, we generated three additional intermediate mutants and solved their structures at overall resolutions of 2.9-3.4 Å. The mutant with nine-point mutations in the pore domain (PD), named Na1.7-M9, has a reduced cavity volume and a sealed gate, with all voltage-sensing domains (VSDs) remaining up. Structural comparison of WT and Na1.7-M9 pinpoints two residues that may be critical to the tightening of the PD. However, the variant containing these two mutations, Na1.7-M2, or even in combination with two additional mutations in the VSDs, named Na1.7-M4, failed to tighten the PD. Our structural analysis reveals a tendency of PD contraction correlated with the right shift of the static inactivation I-V curves. We predict that the channel in the resting state should have a "tight" PD with down VSDs.
History
DepositionDec 27, 2023-
Header (metadata) releaseMar 6, 2024-
Map releaseMar 6, 2024-
UpdateOct 9, 2024-
Current statusOct 9, 2024Processing site: PDBj / Status: Released

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Structure visualization

Supplemental images

emd_38483.png

Downloads & links

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Map

FileDownload / File: emd_38483.map.gz / Format: CCP4 / Size: 91.1 MB / Type: IMAGE STORED AS FLOATING POINT NUMBER (4 BYTES)
AnnotationCryo-EM map for Nav1.7-M2
Projections & slices

Image control

Size
Brightness
Contrast
Others
AxesZ (Sec.)Y (Row.)X (Col.)
0.84 Å/pix.
x 288 pix.
= 241.171 Å		0.84 Å/pix.
x 288 pix.
= 241.171 Å		0.84 Å/pix.
x 288 pix.
= 241.171 Å

Surface

Projections

Slices (1/3)

Slices (1/2)

Slices (2/3)

Images are generated by Spider.

Voxel sizeX=Y=Z: 0.8374 Å
Density

Histogram

Histogram (log scale)
Contour LevelBy AUTHOR: 0.2
Minimum - Maximum-0.8213893 - 1.4157126
Average (Standard dev.)0.014752391 (±0.04952066)
SymmetrySpace group: 1
Details

EMDB XML:

Map geometry
Axis orderXYZ
Origin000
Dimensions288288288
Spacing288288288
CellA=B=C: 241.1712 Å
α=β=γ: 90.0 °

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Supplemental data

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Half map: #2

Fileemd_38483_half_map_1.map
Projections & Slices
AxesZYX

Projections

Slices (1/2)
Density Histograms

Histogram

Histogram (log scale)

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Half map: #1

Fileemd_38483_half_map_2.map
Projections & Slices
AxesZYX

Projections

Slices (1/2)
Density Histograms

Histogram

Histogram (log scale)

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Sample components

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Entire : Voltage-gated sodium channel Nav1.7-M2

EntireName: Voltage-gated sodium channel Nav1.7-M2
Components
  • Complex: Voltage-gated sodium channel Nav1.7-M2
    • Protein or peptide: Sodium channel protein type 9 subunit alpha
    • Protein or peptide: Sodium channel subunit beta-1
    • Protein or peptide: Sodium channel subunit beta-2
  • Ligand: 2-acetamido-2-deoxy-beta-D-glucopyranose
  • Ligand: 1-O-OCTADECYL-SN-GLYCERO-3-PHOSPHOCHOLINE
  • Ligand: 1,2-DIOLEOYL-SN-GLYCERO-3-PHOSPHOCHOLINE

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Supramolecule #1: Voltage-gated sodium channel Nav1.7-M2

SupramoleculeName: Voltage-gated sodium channel Nav1.7-M2 / type: complex / ID: 1 / Parent: 0 / Macromolecule list: #1-#3
Source (natural)Organism: Homo sapiens (human)

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Macromolecule #1: Sodium channel protein type 9 subunit alpha

MacromoleculeName: Sodium channel protein type 9 subunit alpha / type: protein_or_peptide / ID: 1 / Number of copies: 1 / Enantiomer: LEVO
Source (natural)Organism: Homo sapiens (human)
Molecular weightTheoretical: 231.291953 KDa
Recombinant expressionOrganism: Homo sapiens (human)
SequenceString: MASWSHPQFE KGGGARGGSG GGSWSHPQFE KGFDYKDDDD KGTMAMLPPP GPQSFVHFTK QSLALIEQRI AERKSKEPKE EKKDDDEEA PKPSSDLEAG KQLPFIYGDI PPGMVSEPLE DLDPYYADKK TFIVLNKGKT IFRFNATPAL YMLSPFSPLR R ISIKILVH ...String:
MASWSHPQFE KGGGARGGSG GGSWSHPQFE KGFDYKDDDD KGTMAMLPPP GPQSFVHFTK QSLALIEQRI AERKSKEPKE EKKDDDEEA PKPSSDLEAG KQLPFIYGDI PPGMVSEPLE DLDPYYADKK TFIVLNKGKT IFRFNATPAL YMLSPFSPLR R ISIKILVH SLFSMLIMCT ILTNCIFMTM NNPPDWTKNV EYTFTGIYTF ESLVKILARG FCVGEFTFLR DPWNWLDFVV IV FAYLTEF VNLGNVSALR TFRVLRALKT ISVIPGLKTI VGALIQSVKK LSDVMILTVF CLSVFALIGL QLFMGNLKHK CFR NSLENN ETLESIMNTL ESEEDFRKYF YYLEGSKDAL LCGFSTDSGQ CPEGYTCVKI GRNPDYGYTS FDTFSWAFLA LFRL MTQDY WENLYQQTLR AAGKTYMIFF VVVIFLGSFY LINLILAVVA MAYEEQNQAN IEEAKQKELE FQQMLDRLKK EQEEA EAIA AAAAEYTSIR RSRIMGLSES SSETSKLSSK SAKERRNRRK KKNQKKLSSG EEKGDAEKLS KSESEDSIRR KSFHLG VEG HRRAHEKRLS TPNQSPLSIR GSLFSARRSS RTSLFSFKGR GRDIGSETEF ADDEHSIFGD NESRRGSLFV PHRPQER RS SNISQASRSP PMLPVNGKMH SAVDCNGVVS LVDGRSALML PNGQLLPEVI IDKATSDDSG TTNQIHKKRR CSSYLLSE D MLNDPNLRQR AMSRASILTN TVEELEESRQ KCPPWWYRFA HKFLIWNCSP YWIKFKKCIY FIVMDPFVDL AITICIVLN TLFMAMEHHP MTEEFKNVLA IGNLVFTGIF AAEMVLKLIA MDPYEYFQVG WNIFDSLIVT LSLVELFLAD VEGLSVLRSF RLLRVFKLA KSWPTLNMLI KIIGNSVGAF GNLTLVLAII VFIFAVVGMQ LFGKSYKECV CKINDDCTLP RWHMNDFFHS F LIVFRVLC GEWIETMWDC MEVAGQAMCL IVYMMVMVIG NLVVLNLFLA LLLSSFSSDN LTAIEEDPDA NNLQIAVTRI KK GINYVKQ TLREFILKAF SKKPKISREI RQAEDLNTKK ENYISNHTLA EMSKGHNFLK EKDKISGFGS SVDKHLMEDS DGQ SFIHNP SLTVTVPIAP GESDLENMNA EELSSDSDSE YSKVRLNRSS SSECSTVDNP LPGEGEEAEA EPMNSDEPEA CFTD GCVWR FSCCQVNIES GKGKIWWNIR KTCYKIVEHS WFESFIVLMI LLSSGALAFE DIYIERKKTI KIILEYADKI FTYIF ILEM LLKWIAYGYK TYFTNAWCWL DFLIVDVSLV TLVANTLGYS DLGPIKSLRT LRALRPLRAL SRFEGMRVVV NALIGA IPS IMNVLLVCLI FWLIFSIMGV NLFAGKFYEC INTTDGSRFP ASQVPNRSEC FALMNVSQNV RWKNLKVNFD NVGLGYL SL LQVATFKGWT IIMYAAVDSV NVDKQPKYEY SLYMYIYFVV FIIFGSFFTL NLFICVIIDN FNQQKKKLGG QDIFMTEE Q KKYYNAMKKL GSKKPQKPIP RPGNKIQGCI FDLVTNQAFD ISIMVLICLN MVTMMVEKEG QSQHMTEVLY WINVVFIIL FTGECVLKLI SLRHYYFTVG WNIFDFVVVI ISIVGMFLAD LIETYFVSPT LFRVIRLARI GRILRLVKGA KGIRTLLFAL MMSLPALFN IGLLLFLVMF IYAIFGMSNF AYVKKEDGIN DMFNFETFGN SMICLFQITT SAGWDGLLAP ILNSKPPDCD P KKVHPGSS VEGDCGNPSV GIFYFVSYII ISFLVVVNMY IAVILENFSV ATEESTEPLS EDDFEMFYEV WEKFDPDATQ FI EFSKLSD FAAALDPPLL IAKPNKVQLI AMDLPMVSGD RIHCLDILFA FTKRVLGESG EMDSLRSQME ERFMSANPSK VSY EPITTT LKRKQEDVSA TVIQRAYRRY RLRQNVKNIS SIYIKDGDRD DDLLNKKDMA FDNVNENSSP EKTDATSSTT SPPS YDSVT KPDKEKYEQD RTEKEDKGKD SKESKK

UniProtKB: Sodium channel protein type 9 subunit alpha

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Macromolecule #2: Sodium channel subunit beta-1

MacromoleculeName: Sodium channel subunit beta-1 / type: protein_or_peptide / ID: 2 / Number of copies: 1 / Enantiomer: LEVO
Source (natural)Organism: Homo sapiens (human)
Molecular weightTheoretical: 26.355857 KDa
Recombinant expressionOrganism: Homo sapiens (human)
SequenceString: MGRLLALVVG AALVSSACGG CVEVDSETEA VYGMTFKILC ISCKRRSETN AETFTEWTFR QKGTEEFVKI LRYENEVLQL EEDERFEGR VVWNGSRGTK DLQDLSIFIT NVTYNHSGDY ECHVYRLLFF ENYEHNTSVV KKIHIEVVDK ANRDMASIVS E IMMYVLIV ...String:
MGRLLALVVG AALVSSACGG CVEVDSETEA VYGMTFKILC ISCKRRSETN AETFTEWTFR QKGTEEFVKI LRYENEVLQL EEDERFEGR VVWNGSRGTK DLQDLSIFIT NVTYNHSGDY ECHVYRLLFF ENYEHNTSVV KKIHIEVVDK ANRDMASIVS E IMMYVLIV VLTIWLVAEM IYCYKKIAAA TETAAQENAS EYLAITSESK ENCTGVQVAE LEHHHHHHHH HH

UniProtKB: Sodium channel regulatory subunit beta-1

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Macromolecule #3: Sodium channel subunit beta-2

MacromoleculeName: Sodium channel subunit beta-2 / type: protein_or_peptide / ID: 3 / Number of copies: 1 / Enantiomer: LEVO
Source (natural)Organism: Homo sapiens (human)
Molecular weightTheoretical: 25.9796 KDa
Recombinant expressionOrganism: Homo sapiens (human)
SequenceString: MHRDAWLPRP AFSLTGLSLF FSLVPPGRSM EVTVPATLNV LNGSDARLPC TFNSCYTVNH KQFSLNWTYQ ECNNCSEEMF LQFRMKIIN LKLERFQDRV EFSGNPSKYD VSVMLRNVQP EDEGIYNCYI MNPPDRHRGH GKIHLQVLME EPPERDSTVA V IVGASVGG ...String:
MHRDAWLPRP AFSLTGLSLF FSLVPPGRSM EVTVPATLNV LNGSDARLPC TFNSCYTVNH KQFSLNWTYQ ECNNCSEEMF LQFRMKIIN LKLERFQDRV EFSGNPSKYD VSVMLRNVQP EDEGIYNCYI MNPPDRHRGH GKIHLQVLME EPPERDSTVA V IVGASVGG FLAVVILVLM VVKCVRRKKE QKLSTDDLKT EEEGKTDGEG NPDDGAKLEH HHHHHHHHH

UniProtKB: Sodium channel regulatory subunit beta-2

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Macromolecule #5: 2-acetamido-2-deoxy-beta-D-glucopyranose

MacromoleculeName: 2-acetamido-2-deoxy-beta-D-glucopyranose / type: ligand / ID: 5 / Number of copies: 6 / Formula: NAG
Molecular weightTheoretical: 221.208 Da
Chemical component information

ChemComp-NAG:
2-acetamido-2-deoxy-beta-D-glucopyranose

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Macromolecule #6: 1-O-OCTADECYL-SN-GLYCERO-3-PHOSPHOCHOLINE

MacromoleculeName: 1-O-OCTADECYL-SN-GLYCERO-3-PHOSPHOCHOLINE / type: ligand / ID: 6 / Number of copies: 5 / Formula: LPE
Molecular weightTheoretical: 510.708 Da
Chemical component information

ChemComp-LPE:
1-O-OCTADECYL-SN-GLYCERO-3-PHOSPHOCHOLINE

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Macromolecule #7: 1,2-DIOLEOYL-SN-GLYCERO-3-PHOSPHOCHOLINE

MacromoleculeName: 1,2-DIOLEOYL-SN-GLYCERO-3-PHOSPHOCHOLINE / type: ligand / ID: 7 / Number of copies: 3 / Formula: PCW
Molecular weightTheoretical: 787.121 Da
Chemical component information

ChemComp-PCW:
1,2-DIOLEOYL-SN-GLYCERO-3-PHOSPHOCHOLINE / DOPC, phospholipid*YM

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Experimental details

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Structure determination

Methodcryo EM
Processingsingle particle reconstruction
Aggregation stateparticle

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Sample preparation

BufferpH: 7.5
VitrificationCryogen name: ETHANE

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Electron microscopy

MicroscopeFEI TITAN KRIOS
Image recordingFilm or detector model: GATAN K3 (6k x 4k) / Average electron dose: 50.0 e/Å2
Electron beamAcceleration voltage: 300 kV / Electron source: FIELD EMISSION GUN
Electron opticsIllumination mode: FLOOD BEAM / Imaging mode: BRIGHT FIELD / Nominal defocus max: 1.8 µm / Nominal defocus min: 1.5 µm
Experimental equipment
Model: Titan Krios / Image courtesy: FEI Company

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Image processing

Startup modelType of model: NONE
Final reconstructionResolution.type: BY AUTHOR / Resolution: 3.37 Å / Resolution method: FSC 0.143 CUT-OFF / Number images used: 77511
Initial angle assignmentType: MAXIMUM LIKELIHOOD
Final angle assignmentType: MAXIMUM LIKELIHOOD

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