8D3V

Human alpha3 Na+/K+-ATPase in its cytoplasmic side-open state


Experimental Data Snapshot

  • Method: ELECTRON MICROSCOPY
  • Resolution: 3.40 Å
  • Aggregation State: PARTICLE 
  • Reconstruction Method: SINGLE PARTICLE 

wwPDB Validation   3D Report Full Report


This is version 1.0 of the entry. See complete history


Literature

Structural basis for gating mechanism of the human sodium-potassium pump.

Nguyen, P.T.Deisl, C.Fine, M.Tippetts, T.S.Uchikawa, E.Bai, X.C.Levine, B.

(2022) Nat Commun 13: 5293-5293

  • DOI: 10.1038/s41467-022-32990-x
  • Primary Citation of Related Structures:  
    8D3U, 8D3V, 8D3W, 8D3X, 8D3Y

  • PubMed Abstract: 
  • P2-type ATPase sodium-potassium pumps (Na + /K + -ATPases) are ion-transporting enzymes that use ATP to transport Na + and K + on opposite sides of the lipid bilayer against their electrochemical gradients to maintain ion concentration gradients across the membranes in all animal cells ...

    P2-type ATPase sodium-potassium pumps (Na + /K + -ATPases) are ion-transporting enzymes that use ATP to transport Na + and K + on opposite sides of the lipid bilayer against their electrochemical gradients to maintain ion concentration gradients across the membranes in all animal cells. Despite the available molecular architecture of the Na + /K + -ATPases, a complete molecular mechanism by which the Na + and K + ions access into and are released from the pump remains unknown. Here we report five cryo-electron microscopy (cryo-EM) structures of the human alpha3 Na + /K + -ATPase in its cytoplasmic side-open (E1), ATP-bound cytoplasmic side-open (E1•ATP), ADP-AlF 4 - trapped Na + -occluded (E1•P-ADP), BeF 3 - trapped exoplasmic side-open (E2P) and MgF 4 2- trapped K + -occluded (E2•P i ) states. Our work reveals the atomically resolved structural detail of the cytoplasmic gating mechanism of the Na + /K + -ATPase.


    Organizational Affiliation

    Howard Hughes Medical Institute and Department of Internal Medicine, University of Texas Southwestern Medical Center, Dallas, TX, USA.



Macromolecules
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Entity ID: 1
MoleculeChainsSequence LengthOrganismDetailsImage
Sodium/potassium-transporting ATPase subunit alpha-3A1,013Homo sapiensMutation(s): 0 
Gene Names: ATP1A3
EC: 7.2.2.13
Membrane Entity: Yes 
UniProt & NIH Common Fund Data Resources
Find proteins for P13637 (Homo sapiens)
Explore P13637 
Go to UniProtKB:  P13637
PHAROS:  P13637
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UniProt GroupP13637
Protein Feature View
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Entity ID: 2
MoleculeChainsSequence LengthOrganismDetailsImage
Sodium/potassium-transporting ATPase subunit beta-1B303Homo sapiensMutation(s): 0 
Gene Names: ATP1B1ATP1B
Membrane Entity: Yes 
UniProt & NIH Common Fund Data Resources
Find proteins for P05026 (Homo sapiens)
Explore P05026 
Go to UniProtKB:  P05026
PHAROS:  P05026
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UniProt GroupP05026
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Entity ID: 3
MoleculeChainsSequence LengthOrganismDetailsImage
FXYD domain-containing ion transport regulator 6C [auth G]98Homo sapiensMutation(s): 0 
Gene Names: FXYD6UNQ521/PRO1056
Membrane Entity: Yes 
UniProt & NIH Common Fund Data Resources
Find proteins for Q9H0Q3 (Homo sapiens)
Explore Q9H0Q3 
Go to UniProtKB:  Q9H0Q3
PHAROS:  Q9H0Q3
Entity Groups  
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UniProt GroupQ9H0Q3
Protein Feature View
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  • Reference Sequence
Experimental Data & Validation

Experimental Data

  • Method: ELECTRON MICROSCOPY
  • Resolution: 3.40 Å
  • Aggregation State: PARTICLE 
  • Reconstruction Method: SINGLE PARTICLE 

Structure Validation

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Entry History & Funding Information

Deposition Data


Funding OrganizationLocationGrant Number
National Institutes of Health/National Institute of General Medical Sciences (NIH/NIGMS)United StatesR01GM136976
Welch FoundationUnited StatesI-1944

Revision History  (Full details and data files)

  • Version 1.0: 2022-09-21
    Type: Initial release