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- EMDB-31519: structure of a channel -

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Basic information

Entry
Database: EMDB / ID: EMD-31519
Titlestructure of a channel
Map dataCryo-EM map of a channel
Sample
  • Complex: sodium channel with four homologous domains
    • Protein or peptide: Sodium channel protein type 5 subunit alpha,Sodium channel protein type 5 subunit alpha,Sodium channel protein type 5 subunit alpha,G protein/GFP fusion protein
  • Ligand: 2-acetamido-2-deoxy-beta-D-glucopyranose
  • Ligand: [(2~{R})-1-[2-azanylethoxy(oxidanyl)phosphoryl]oxy-3-hexadecanoyloxy-propan-2-yl] (~{Z})-octadec-9-enoate
  • Ligand: 1-[2-[(2R)-2-oxidanyl-3-(propylamino)propoxy]phenyl]-3-phenyl-propan-1-one
  • Ligand: (3beta,14beta,17beta,25R)-3-[4-methoxy-3-(methoxymethyl)butoxy]spirost-5-en
Keywordsion channel / four-domain / MEMBRANE PROTEIN
Function / homology
Function and homology information


voltage-gated sodium channel activity involved in AV node cell action potential / voltage-gated sodium channel activity involved in bundle of His cell action potential / voltage-gated sodium channel activity involved in Purkinje myocyte action potential / voltage-gated sodium channel activity involved in SA node cell action potential / bundle of His cell action potential / AV node cell action potential / SA node cell action potential / AV node cell to bundle of His cell communication / membrane depolarization during SA node cell action potential / sodium channel complex ...voltage-gated sodium channel activity involved in AV node cell action potential / voltage-gated sodium channel activity involved in bundle of His cell action potential / voltage-gated sodium channel activity involved in Purkinje myocyte action potential / voltage-gated sodium channel activity involved in SA node cell action potential / bundle of His cell action potential / AV node cell action potential / SA node cell action potential / AV node cell to bundle of His cell communication / membrane depolarization during SA node cell action potential / sodium channel complex / response to denervation involved in regulation of muscle adaptation / membrane depolarization during atrial cardiac muscle cell action potential / cardiac ventricle development / regulation of atrial cardiac muscle cell membrane repolarization / regulation of ventricular cardiac muscle cell membrane depolarization / voltage-gated sodium channel activity involved in cardiac muscle cell action potential / brainstem development / membrane depolarization during AV node cell action potential / positive regulation of action potential / membrane depolarization during bundle of His cell action potential / atrial cardiac muscle cell action potential / membrane depolarization during Purkinje myocyte cell action potential / telencephalon development / 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 / ventricular cardiac muscle cell action potential / cardiac muscle cell action potential involved in contraction / regulation of ventricular cardiac muscle cell membrane repolarization / voltage-gated sodium channel complex / sodium ion import across plasma membrane / regulation of cardiac muscle cell contraction / ankyrin binding / voltage-gated sodium channel activity / sodium ion transport / nitric-oxide synthase binding / fibroblast growth factor binding / odontogenesis of dentin-containing tooth / regulation of heart rate by cardiac conduction / membrane depolarization / intercalated disc / lateral plasma membrane / neuronal action potential / positive regulation of heart rate / cardiac muscle contraction / T-tubule / sodium ion transmembrane transport / cerebellum development / regulation of heart rate / cellular response to calcium ion / bioluminescence / positive regulation of epithelial cell proliferation / generation of precursor metabolites and energy / : / sarcolemma / caveola / Z disc / scaffold protein binding / transmembrane transporter binding / calmodulin binding / protein domain specific binding / symbiont entry into host cell / axon / viral envelope / ubiquitin protein ligase binding / protein kinase binding / virion attachment to host cell / perinuclear region of cytoplasm / enzyme binding / cell surface / endoplasmic reticulum / membrane / plasma membrane
Similarity search - Function
: / Rhabdovirus spike glycoprotein G central domain / Rhabdovirus glycoprotein / Rhabdovirus spike glycoprotein fusion domain / Voltage gated sodium channel, alpha-5 subunit / 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 ...: / Rhabdovirus spike glycoprotein G central domain / Rhabdovirus glycoprotein / Rhabdovirus spike glycoprotein fusion domain / Voltage gated sodium channel, alpha-5 subunit / 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 / Voltage-dependent channel domain superfamily / Green fluorescent protein, GFP / Green fluorescent protein-related / Green fluorescent protein / Green fluorescent protein / Ion transport domain / Ion transport protein
Similarity search - Domain/homology
G protein/GFP fusion protein / Sodium channel protein type 5 subunit alpha
Similarity search - Component
Biological speciesRattus norvegicus (Norway rat) / Recombinant vesicular stomatitis Indiana virus rVSV-G/GFP
Methodsingle particle reconstruction / cryo EM / Resolution: 3.4 Å
AuthorsJiang DJ / Catterall WA
Funding support United States, 1 items
OrganizationGrant numberCountry
National Institutes of Health/National Heart, Lung, and Blood Institute (NIH/NHLBI)R01 HL112808 United States
CitationJournal: Cell / Year: 2021
Title: Open-state structure and pore gating mechanism of the cardiac sodium channel.
Authors: Daohua Jiang / Richard Banh / Tamer M Gamal El-Din / Lige Tonggu / Michael J Lenaeus / Régis Pomès / Ning Zheng / William A Catterall /
Abstract: The heartbeat is initiated by voltage-gated sodium channel Na1.5, which opens rapidly and triggers the cardiac action potential; however, the structural basis for pore opening remains unknown. Here, ...The heartbeat is initiated by voltage-gated sodium channel Na1.5, which opens rapidly and triggers the cardiac action potential; however, the structural basis for pore opening remains unknown. Here, we blocked fast inactivation with a mutation and captured the elusive open-state structure. The fast inactivation gate moves away from its receptor, allowing asymmetric opening of pore-lining S6 segments, which bend and rotate at their intracellular ends to dilate the activation gate to ∼10 Å diameter. Molecular dynamics analyses predict physiological rates of Na conductance. The open-state pore blocker propafenone binds in a high-affinity pose, and drug-access pathways are revealed through the open activation gate and fenestrations. Comparison with mutagenesis results provides a structural map of arrhythmia mutations that target the activation and fast inactivation gates. These results give atomic-level insights into molecular events that underlie generation of the action potential, open-state drug block, and fast inactivation of cardiac sodium channels, which initiate the heartbeat.
History
DepositionJul 12, 2021-
Header (metadata) releaseSep 22, 2021-
Map releaseSep 22, 2021-
UpdateOct 16, 2024-
Current statusOct 16, 2024Processing site: PDBj / Status: Released

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Structure visualization

Movie
  • Surface view with section colored by density value
  • Surface level: 0.65
  • Imaged by UCSF Chimera
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  • Surface view colored by cylindrical radius
  • Surface level: 0.65
  • Imaged by UCSF Chimera
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  • Surface view with fitted model
  • Atomic models: PDB-7fbs
  • Surface level: 0.65
  • Imaged by UCSF Chimera
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Movie viewer
Structure viewerEM map:
SurfViewMolmilJmol/JSmol
Supplemental images

emd_31519.png

Downloads & links

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Map

FileDownload / File: emd_31519.map.gz / Format: CCP4 / Size: 125 MB / Type: IMAGE STORED AS FLOATING POINT NUMBER (4 BYTES)
AnnotationCryo-EM map of a channel
Projections & slices

Image control

Size
Brightness
Contrast
Others
AxesZ (Sec.)Y (Row.)X (Col.)
1.06 Å/pix.
x 320 pix.
= 337.92 Å		1.06 Å/pix.
x 320 pix.
= 337.92 Å		1.06 Å/pix.
x 320 pix.
= 337.92 Å

Surface

Projections

Slices (1/3)

Slices (1/2)

Slices (2/3)

Images are generated by Spider.

Voxel sizeX=Y=Z: 1.056 Å
Density

Histogram

Histogram (log scale)
Contour LevelBy AUTHOR: 0.65 / Movie #1: 0.65
Minimum - Maximum-3.7628493 - 6.485994
Average (Standard dev.)-0.0003415014 (±0.09603022)
SymmetrySpace group: 1
Details

EMDB XML:

Map geometry
Axis orderXYZ
Origin000
Dimensions320320320
Spacing320320320
CellA=B=C: 337.91998 Å
α=β=γ: 90.0 °

CCP4 map header:

modeImage stored as Reals
Å/pix. X/Y/Z1.0561.0561.056
M x/y/z320320320
origin x/y/z0.0000.0000.000
length x/y/z337.920337.920337.920
α/β/γ90.00090.00090.000
start NX/NY/NZ-140-140-140
NX/NY/NZ280280280
MAP C/R/S123
start NC/NR/NS000
NC/NR/NS320320320
D min/max/mean-3.7636.486-0.000

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Supplemental data

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Sample components

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Entire : sodium channel with four homologous domains

EntireName: sodium channel with four homologous domains
Components
  • Complex: sodium channel with four homologous domains
    • Protein or peptide: Sodium channel protein type 5 subunit alpha,Sodium channel protein type 5 subunit alpha,Sodium channel protein type 5 subunit alpha,G protein/GFP fusion protein
  • Ligand: 2-acetamido-2-deoxy-beta-D-glucopyranose
  • Ligand: [(2~{R})-1-[2-azanylethoxy(oxidanyl)phosphoryl]oxy-3-hexadecanoyloxy-propan-2-yl] (~{Z})-octadec-9-enoate
  • Ligand: 1-[2-[(2R)-2-oxidanyl-3-(propylamino)propoxy]phenyl]-3-phenyl-propan-1-one
  • Ligand: (3beta,14beta,17beta,25R)-3-[4-methoxy-3-(methoxymethyl)butoxy]spirost-5-en

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Supramolecule #1: sodium channel with four homologous domains

SupramoleculeName: sodium channel with four homologous domains / type: complex / ID: 1 / Parent: 0 / Macromolecule list: #1
Source (natural)Organism: Rattus norvegicus (Norway rat)
Molecular weightTheoretical: 250 KDa

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Macromolecule #1: Sodium channel protein type 5 subunit alpha,Sodium channel protei...

MacromoleculeName: Sodium channel protein type 5 subunit alpha,Sodium channel protein type 5 subunit alpha,Sodium channel protein type 5 subunit alpha,G protein/GFP fusion protein
type: protein_or_peptide / ID: 1 / Number of copies: 1 / Enantiomer: LEVO
Source (natural)Organism: Recombinant vesicular stomatitis Indiana virus rVSV-G/GFP
Molecular weightTheoretical: 209.030625 KDa
Recombinant expressionOrganism: Mammalian 1 orthobornavirus
SequenceString: MANLLLPRGT SSFRRFTRES LAAIEKRMAE KQARGGSATS QESREGLQEE EAPRPQLDLQ ASKKLPDLYG NPPRELIGEP LEDLDPFYS TQKTFIVLNK GKTIFRFSAT NALYVLSPFH PVRRAAVKIL VHSLFSMLIM CTILTNCVFM AQHDPPPWTK Y VEYTFTAI ...String:
MANLLLPRGT SSFRRFTRES LAAIEKRMAE KQARGGSATS QESREGLQEE EAPRPQLDLQ ASKKLPDLYG NPPRELIGEP LEDLDPFYS TQKTFIVLNK GKTIFRFSAT NALYVLSPFH PVRRAAVKIL VHSLFSMLIM CTILTNCVFM AQHDPPPWTK Y VEYTFTAI YTFESLVKIL ARGFCLHAFT FLRDPWNWLD FSVIVMAYTT EFVDLGNVSA LRTFRVLRAL KTISVISGLK TI VGALIQS VKKLADVMVL TVFCLSVFAL IGLQLFMGNL RHKCVRNFTE LNGTNGSVEA DGLVWNSLDV YLNDPANYLL KNG TTDVLL CGNSSDAGTC PEGYRCLKAG ENPDHGYTSF DSFAWAFLAL FRLMTQDCWE RLYQQTLRSA GKIYMIFFML VIFL GSFYL VNLILAVVAM AYEEQNQATI AETEEKEKRF QEAMEMLKKE HEALTIRGVD TVSRSSARQR ALSAVSVLTS ALEEL EESH RKCPPCWNRF AQHYLIWECC PLWMSIKQKV KFVVMDPFAD LTITMCIVLN TLFMALEHYN MTAEFEEMLQ VGNLVF TGI FTAEMTFKII ALDPYYYFQQ GWNIFDSIIV ILSLMELGLS RMGNLSVLRS FRLLRVFKLA KSWPTLNTLI KIIGNSV GA LGNLTLVLAI IVFIFAVVGM QLFGKNYSEL RHRISDSGLL PRWHMMDFFH AFLIIFRILC GEWIETMWDC MEVSGQSL C LLVFLLVMVI GNLVVLNLFL ALLLSSFSAD NLTAPDEDGE MNNLQLALAR IQRGLRFVKR TTWDFCCGIL RRRPKKPAA LATHSQLPSC ITAPRSPPPP EVEKVPPARK ETRFEEDKRP GQGTPGDSEP VCVPIAVAES DTEDQEEDEE NGKVWWRLRK TCYRIVEHS WFETFIIFMI LLSSGALAFE DIYLEERKTI KVLLEYADKM FTYVFVLEML LKWVAYGFKK YFTNAWCWLD F LIVDVSLV SLVANTLGFA EMGPIKSLRT LRALRPLRAL SRFEGMRVVV NALVGAIPSI MNVLLVCLIF WLIFSIMGVN LF AGKFGRC INQTEGDLPL NYTIVNNKSE CESFNVTGEL YWTKVKVNFD NVGAGYLALL QVATFKGWMD IMYAAVDSRG YEE QPQWED NLYMYIYFVV FIIFGSFFTL NLFIGVIIDN FNQQKKKLGG QDQQQTEEQK KYYNAMKKLG SKKPQKPIPR PLNK YQGFI FDIVTKQAFD VTIMFLICLN MVTMMVETDD QSPEKVNILA KINLLFVAIF TGECIVKMAA LRHYYFTNSW NIFDF VVVI LSIVGTVLSD IIQKYFFSPT LFRVIRLARI GRILRLIRGA KGIRTLLFAL MMSLPALFNI GLLLFLVMFI YSIFGM ANF AYVKWEAGID DMFNFQTFAN SMLCLFQITT SAGWDGLLSP ILNTGPPYCD PNLPNSNGSR GNCGSPAVGI LFFTTYI II SFLIVVNMYI AIILENFSVA TEESTEPLSE DDFDMFYEIW EKFDPEATQF IEYLALSDFA DALSEPLRIA KPNQISLI N MDLPMVSGDR IHCMDILFAF TKRVLGESGE MDALKIQMEE KFMAANPSKI SYEPITTTLE VLFQGPGSMV SKGEELFTG VVPILVELDG DVNGHKFSVS GEGEGDATYG KLTLKFICTT GKLPVPWPTL VTTLTYGVQC FSRYPDHMKQ HDFFKSAMPE GYVQERTIF FKDDGNYKTR AEVKFEGDTL VNRIELKGID FKEDGNILGH KLEYNYNSHN VYIMADKQKN GIKVNFKIRH N IEDGSVQL ADHYQQNTPI GDGPVLLPDN HYLSTQSALS KDPNEKRDHM VLLEFVTAAG ITLGMDELYK GSDYKDDDDK

UniProtKB: Sodium channel protein type 5 subunit alpha, Sodium channel protein type 5 subunit alpha, Sodium channel protein type 5 subunit alpha, G protein/GFP fusion protein

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

MacromoleculeName: 2-acetamido-2-deoxy-beta-D-glucopyranose / type: ligand / ID: 2 / Number of copies: 3 / Formula: NAG
Molecular weightTheoretical: 221.208 Da
Chemical component information

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

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Macromolecule #3: [(2~{R})-1-[2-azanylethoxy(oxidanyl)phosphoryl]oxy-3-hexadecanoyl...

MacromoleculeName: [(2~{R})-1-[2-azanylethoxy(oxidanyl)phosphoryl]oxy-3-hexadecanoyloxy-propan-2-yl] (~{Z})-octadec-9-enoate
type: ligand / ID: 3 / Number of copies: 11 / Formula: 6OU
Molecular weightTheoretical: 717.996 Da
Chemical component information

ChemComp-6OU:
[(2~{R})-1-[2-azanylethoxy(oxidanyl)phosphoryl]oxy-3-hexadecanoyloxy-propan-2-yl] (~{Z})-octadec-9-enoate / phospholipid*YM

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Macromolecule #4: 1-[2-[(2R)-2-oxidanyl-3-(propylamino)propoxy]phenyl]-3-phenyl-pro...

MacromoleculeName: 1-[2-[(2R)-2-oxidanyl-3-(propylamino)propoxy]phenyl]-3-phenyl-propan-1-one
type: ligand / ID: 4 / Number of copies: 1 / Formula: 4Y4
Molecular weightTheoretical: 341.444 Da
Chemical component information

ChemComp-4Y4:
1-[2-[(2R)-2-oxidanyl-3-(propylamino)propoxy]phenyl]-3-phenyl-propan-1-one

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Macromolecule #5: (3beta,14beta,17beta,25R)-3-[4-methoxy-3-(methoxymethyl)butoxy]sp...

MacromoleculeName: (3beta,14beta,17beta,25R)-3-[4-methoxy-3-(methoxymethyl)butoxy]spirost-5-en
type: ligand / ID: 5 / Number of copies: 2 / Formula: 9Z9
Molecular weightTheoretical: 544.805 Da
Chemical component information

ChemComp-9Z9:
(3beta,14beta,17beta,25R)-3-[4-methoxy-3-(methoxymethyl)butoxy]spirost-5-en / detergent*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

Concentration5 mg/mL
BufferpH: 6
GridMaterial: GOLD / Mesh: 300 / Pretreatment - Type: GLOW DISCHARGE / Pretreatment - Time: 60 sec.
VitrificationCryogen name: ETHANE

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Electron microscopy

MicroscopeFEI TITAN KRIOS
Specialist opticsEnergy filter - Name: GIF Quantum ER / Energy filter - Slit width: 20 eV
Image recordingFilm or detector model: GATAN K2 SUMMIT (4k x 4k) / Detector mode: SUPER-RESOLUTION / Average electron dose: 60.0 e/Å2
Electron beamAcceleration voltage: 300 kV / Electron source: FIELD EMISSION GUN
Electron opticsIllumination mode: FLOOD BEAM / Imaging mode: BRIGHT FIELD / Cs: 2.7 mm
Sample stageSpecimen holder model: FEI TITAN KRIOS AUTOGRID HOLDER / Cooling holder cryogen: NITROGEN
Experimental equipment
Model: Titan Krios / Image courtesy: FEI Company

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Image processing

Startup modelType of model: EMDB MAP
Final reconstructionResolution.type: BY AUTHOR / Resolution: 3.4 Å / Resolution method: FSC 0.143 CUT-OFF / Number images used: 287306
Initial angle assignmentType: ANGULAR RECONSTITUTION
Final angle assignmentType: MAXIMUM LIKELIHOOD
FSC plot (resolution estimation)

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Atomic model buiding 1

RefinementSpace: REAL / Protocol: RIGID BODY FIT
Output model

PDB-7fbs:
structure of a channel

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