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- EMDB-62254: Cryo-EM structure of human sodium pump E1003K in (2K+)E2-AlF state -

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Basic information

Entry
Database: EMDB / ID: EMD-62254
TitleCryo-EM structure of human sodium pump E1003K in (2K+)E2-AlF state
Map data
Sample
  • Complex: human sodium pump alpha-beta protomer
    • Protein or peptide: Sodium/potassium-transporting ATPase subunit alpha-1
    • Protein or peptide: Sodium/potassium-transporting ATPase subunit beta-3
  • Ligand: TETRAFLUOROALUMINATE ION
  • Ligand: MAGNESIUM ION
  • Ligand: POTASSIUM ION
  • Ligand: CHOLESTEROL
  • Ligand: water
KeywordsP-type ATPase / Na+ / K+-ATPase / sodium pump / human / MEMBRANE PROTEIN
Function / homology
Function and homology information


negative regulation of glucocorticoid biosynthetic process / Na+/K+-exchanging ATPase / positive regulation of striated muscle contraction / positive regulation of sodium ion export across plasma membrane / positive regulation of heart contraction / positive regulation of potassium ion import across plasma membrane / photoreceptor inner segment membrane / membrane repolarization during cardiac muscle cell action potential / steroid hormone binding / sodium ion binding ...negative regulation of glucocorticoid biosynthetic process / Na+/K+-exchanging ATPase / positive regulation of striated muscle contraction / positive regulation of sodium ion export across plasma membrane / positive regulation of heart contraction / positive regulation of potassium ion import across plasma membrane / photoreceptor inner segment membrane / membrane repolarization during cardiac muscle cell action potential / steroid hormone binding / sodium ion binding / P-type sodium:potassium-exchanging transporter activity / sodium:potassium-exchanging ATPase complex / negative regulation of heart contraction / membrane repolarization / establishment or maintenance of transmembrane electrochemical gradient / regulation of the force of heart contraction / cell communication by electrical coupling involved in cardiac conduction / sodium ion export across plasma membrane / osmosensory signaling pathway / intracellular sodium ion homeostasis / cardiac muscle cell action potential involved in contraction / relaxation of cardiac muscle / response to glycoside / Basigin interactions / cellular response to steroid hormone stimulus / organelle membrane / potassium ion import across plasma membrane / potassium ion binding / intracellular potassium ion homeostasis / phosphatase activity / ATPase activator activity / Ion transport by P-type ATPases / lateral plasma membrane / sperm flagellum / transporter activator activity / regulation of sodium ion transport / Ion homeostasis / potassium ion transmembrane transport / T-tubule / sodium ion transmembrane transport / proton transmembrane transport / protein localization to plasma membrane / sarcolemma / regulation of blood pressure / melanosome / extracellular vesicle / protein-folding chaperone binding / ATPase binding / protein-macromolecule adaptor activity / basolateral plasma membrane / Potential therapeutics for SARS / transmembrane transporter binding / postsynaptic density / protein stabilization / apical plasma membrane / membrane raft / response to xenobiotic stimulus / protein heterodimerization activity / axon / endoplasmic reticulum / Golgi apparatus / protein-containing complex / ATP hydrolysis activity / extracellular exosome / ATP binding / membrane / plasma membrane
Similarity search - Function
Sodium/potassium-transporting ATPase subunit beta / Sodium/potassium-transporting ATPase subunit beta superfamily / Sodium / potassium ATPase beta chain / Sodium and potassium ATPases beta subunits signature 1. / : / P-type ATPase subfamily IIC, subunit alpha / Cation-transporting P-type ATPase, C-terminal / Cation transporting ATPase, C-terminus / Cation transporter/ATPase, N-terminus / Cation-transporting P-type ATPase, N-terminal ...Sodium/potassium-transporting ATPase subunit beta / Sodium/potassium-transporting ATPase subunit beta superfamily / Sodium / potassium ATPase beta chain / Sodium and potassium ATPases beta subunits signature 1. / : / P-type ATPase subfamily IIC, subunit alpha / Cation-transporting P-type ATPase, C-terminal / Cation transporting ATPase, C-terminus / Cation transporter/ATPase, N-terminus / Cation-transporting P-type ATPase, N-terminal / Cation transporter/ATPase, N-terminus / P-type ATPase, cytoplasmic domain N / P-type ATPase actuator domain / P-type ATPase, haloacid dehalogenase domain / P-type ATPase, phosphorylation site / P-type ATPase, cytoplasmic domain N / E1-E2 ATPases phosphorylation site. / P-type ATPase, A domain superfamily / P-type ATPase / P-type ATPase, transmembrane domain superfamily / HAD superfamily / HAD-like superfamily
Similarity search - Domain/homology
Sodium/potassium-transporting ATPase subunit alpha-1 / Sodium/potassium-transporting ATPase subunit beta-3
Similarity search - Component
Biological speciesHomo sapiens (human)
Methodsingle particle reconstruction / cryo EM / Resolution: 2.9 Å
AuthorsAbe K / Dou Y / Suzuki J
Funding support Japan, 1 items
OrganizationGrant numberCountry
Japan Society for the Promotion of Science (JSPS)21H02426 Japan
CitationJournal: To Be Published
Title: Structural basis of a sodium pump quaternary complex leading phospholipid scrambling in the living cell
Authors: Dou Y / Abe K / Suzuki J
History
DepositionNov 1, 2024-
Header (metadata) releaseNov 12, 2025-
Map releaseNov 12, 2025-
UpdateNov 12, 2025-
Current statusNov 12, 2025Processing site: PDBj / Status: Released

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Structure visualization

Supplemental images

emd_62254.png

Downloads & links

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Map

FileDownload / File: emd_62254.map.gz / Format: CCP4 / Size: 64 MB / Type: IMAGE STORED AS FLOATING POINT NUMBER (4 BYTES)
Projections & slices

Image control

Size
Brightness
Contrast
Others
AxesZ (Sec.)Y (Row.)X (Col.)
0.83 Å/pix.
x 256 pix.
= 212.48 Å		0.83 Å/pix.
x 256 pix.
= 212.48 Å		0.83 Å/pix.
x 256 pix.
= 212.48 Å

Surface

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Images are generated by Spider.

Voxel sizeX=Y=Z: 0.83 Å
Density

Histogram

Histogram (log scale)
Contour LevelBy AUTHOR: 0.0279
Minimum - Maximum-0.08110539 - 0.15107086
Average (Standard dev.)0.00019584042 (±0.0039277915)
SymmetrySpace group: 1
Details

EMDB XML:

Map geometry
Axis orderXYZ
Origin000
Dimensions256256256
Spacing256256256
CellA=B=C: 212.48 Å
α=β=γ: 90.0 °

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Supplemental data

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Mask #1

Fileemd_62254_msk_1.map
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Half map: #1

Fileemd_62254_half_map_1.map
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Half map: #2

Fileemd_62254_half_map_2.map
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Sample components

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Entire : human sodium pump alpha-beta protomer

EntireName: human sodium pump alpha-beta protomer
Components
  • Complex: human sodium pump alpha-beta protomer
    • Protein or peptide: Sodium/potassium-transporting ATPase subunit alpha-1
    • Protein or peptide: Sodium/potassium-transporting ATPase subunit beta-3
  • Ligand: TETRAFLUOROALUMINATE ION
  • Ligand: MAGNESIUM ION
  • Ligand: POTASSIUM ION
  • Ligand: CHOLESTEROL
  • Ligand: water

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Supramolecule #1: human sodium pump alpha-beta protomer

SupramoleculeName: human sodium pump alpha-beta protomer / type: complex / ID: 1 / Parent: 0 / Macromolecule list: #1-#2
Source (natural)Organism: Homo sapiens (human)
Molecular weightTheoretical: 150 KDa

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Macromolecule #1: Sodium/potassium-transporting ATPase subunit alpha-1

MacromoleculeName: Sodium/potassium-transporting ATPase subunit alpha-1 / type: protein_or_peptide / ID: 1 / Number of copies: 1 / Enantiomer: LEVO / EC number: Na+/K+-exchanging ATPase
Source (natural)Organism: Homo sapiens (human)
Molecular weightTheoretical: 108.781023 KDa
Recombinant expressionOrganism: Homo sapiens (human)
SequenceString: VSMDDHKLSL DELHRKYGTD LSRGLTSARA AEILARDGPN ALTPPPTTPE WIKFCRQLFG GFSMLLWIGA ILCFLAYSIQ AATEEEPQN DNLYLGVVLS AVVIITGCFS YYQEAKSSKI MESFKNMVPQ QALVIRNGEK MSINAEEVVV GDLVEVKGGD R IPADLRII ...String:
VSMDDHKLSL DELHRKYGTD LSRGLTSARA AEILARDGPN ALTPPPTTPE WIKFCRQLFG GFSMLLWIGA ILCFLAYSIQ AATEEEPQN DNLYLGVVLS AVVIITGCFS YYQEAKSSKI MESFKNMVPQ QALVIRNGEK MSINAEEVVV GDLVEVKGGD R IPADLRII SANGCKVDNS SLTGESEPQT RSPDFTNENP LETRNIAFFS TNCVEGTARG IVVYTGDRTV MGRIATLASG LE GGQTPIA AEIEHFIHII TGVAVFLGVS FFILSLILEY TWLEAVIFLI GIIVANVPEG LLATVTVCLT LTAKRMARKN CLV KNLEAV ETLGSTSTIC SDKTGTLTQN RMTVAHMWFD NQIHEADTTE NQSGVSFDKT SATWLALSRI AGLCNRAVFQ ANQE NLPIL KRAVAGDASE SALLKCIELC CGSVKEMRER YAKIVEIPFN STNKYQLSIH KNPNTSEPQH LLVMKGAPER ILDRC SSIL LHGKEQPLDE ELKDAFQNAY LELGGLGERV LGFCHLFLPD EQFPEGFQFD TDDVNFPIDN LCFVGLISMI DPPRAA VPD AVGKCRSAGI KVIMVTGDHP ITAKAIAKGV GIISEGNETV EDIAARLNIP VSQVNPRDAK ACVVHGSDLK DMTSEQL DD ILKYHTEIVF ARTSPQQKLI IVEGCQRQGA IVAVTGDGVN DSPALKKADI GVAMGIAGSD VSKQAADMIL LDDNFASI V TGVEEGRLIF DNLKKSIAYT LTSNIPEITP FLIFIIANIP LPLGTVTILC IDLGTDMVPA ISLAYEQAES DIMKRQPRN PKTDKLVNER LISMAYGQIG MIQALGGFFT YFVILAENGF LPIHLLGLRV DWDDRWINDV EDSYGQQWTY EQRKIVEFTC HTAFFVSIV VVQWADLVIC KTRRNSVFQQ GMKNKILIFG LFEETALAAF LSYCPGMGVA LRMYPLKPTW WFCAFPYSLL I FVYDKVRK LIIRRRPGGW VEKETYY

UniProtKB: Sodium/potassium-transporting ATPase subunit alpha-1

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Macromolecule #2: Sodium/potassium-transporting ATPase subunit beta-3

MacromoleculeName: Sodium/potassium-transporting ATPase subunit beta-3 / type: protein_or_peptide / ID: 2 / Number of copies: 1 / Enantiomer: LEVO
Source (natural)Organism: Homo sapiens (human)
Molecular weightTheoretical: 31.545518 KDa
Recombinant expressionOrganism: Homo sapiens (human)
SequenceString: MTKNEKKSLN QSLAEWKLFI YNPTTGEFLG RTAKSWGLIL LFYLVFYGFL AALFSFTMWV MLQTLNDEVP KYRDQIPSPG LMVFPKPVT ALEYTFSRSD PTSYAGYIED LKKFLKPYTL EEQKNLTVCP DGALFEQKGP VYVACQFPIS LLQACSGMND P DFGYSQGN ...String:
MTKNEKKSLN QSLAEWKLFI YNPTTGEFLG RTAKSWGLIL LFYLVFYGFL AALFSFTMWV MLQTLNDEVP KYRDQIPSPG LMVFPKPVT ALEYTFSRSD PTSYAGYIED LKKFLKPYTL EEQKNLTVCP DGALFEQKGP VYVACQFPIS LLQACSGMND P DFGYSQGN PCILVKMNRI IGLKPEGVPR IDCVSKNEDI PNVAVYPHNG MIDLKYFPYY GKKLHVGYLQ PLVAVQVSFA PN NTGKEVT VECKIDGSAN LKSQDDRDKF LGRVMFKITA RA

UniProtKB: Sodium/potassium-transporting ATPase subunit beta-3

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Macromolecule #3: TETRAFLUOROALUMINATE ION

MacromoleculeName: TETRAFLUOROALUMINATE ION / type: ligand / ID: 3 / Number of copies: 1 / Formula: ALF
Molecular weightTheoretical: 102.975 Da
Chemical component information

ChemComp-ALF:
TETRAFLUOROALUMINATE ION

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Macromolecule #4: MAGNESIUM ION

MacromoleculeName: MAGNESIUM ION / type: ligand / ID: 4 / Number of copies: 1 / Formula: MG
Molecular weightTheoretical: 24.305 Da

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Macromolecule #5: POTASSIUM ION

MacromoleculeName: POTASSIUM ION / type: ligand / ID: 5 / Number of copies: 3 / Formula: K
Molecular weightTheoretical: 39.098 Da

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Macromolecule #6: CHOLESTEROL

MacromoleculeName: CHOLESTEROL / type: ligand / ID: 6 / Number of copies: 1 / Formula: CLR
Molecular weightTheoretical: 386.654 Da
Chemical component information

ChemComp-CLR:
CHOLESTEROL

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Macromolecule #7: water

MacromoleculeName: water / type: ligand / ID: 7 / Number of copies: 6 / Formula: HOH
Molecular weightTheoretical: 18.015 Da
Chemical component information

ChemComp-HOH:
WATER

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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: 6.5
VitrificationCryogen name: ETHANE

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Electron microscopy

MicroscopeTFS KRIOS
Image recordingFilm or detector model: GATAN K3 (6k x 4k) / Average electron dose: 48.0 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: 0.8 µm
Experimental equipment
Model: Titan Krios / Image courtesy: FEI Company

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Image processing

CTF correctionType: PHASE FLIPPING AND AMPLITUDE CORRECTION
Startup modelType of model: PDB ENTRY
PDB model - PDB ID:

3wgu

Final reconstructionResolution.type: BY AUTHOR / Resolution: 2.9 Å / Resolution method: FSC 0.143 CUT-OFF / Number images used: 55658
Initial angle assignmentType: MAXIMUM LIKELIHOOD
Final angle assignmentType: MAXIMUM LIKELIHOOD
FSC plot (resolution estimation)

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