7SI7

Structure of ATP7B in state 2


Experimental Data Snapshot

  • Method: ELECTRON MICROSCOPY
  • Resolution: 3.49 Å
  • Aggregation State: PARTICLE 
  • Reconstruction Method: SINGLE PARTICLE 

Starting Model: experimental
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wwPDB Validation   3D Report Full Report


This is version 1.1 of the entry. See complete history


Literature

Structure of the Wilson disease copper transporter ATP7B.

Bitter, R.M.Oh, S.Deng, Z.Rahman, S.Hite, R.K.Yuan, P.

(2022) Sci Adv 8: eabl5508-eabl5508

  • DOI: https://doi.org/10.1126/sciadv.abl5508
  • Primary Citation of Related Structures:  
    7SI3, 7SI6, 7SI7

  • PubMed Abstract: 

    ATP7A and ATP7B, two homologous copper-transporting P1B-type ATPases, play crucial roles in cellular copper homeostasis, and mutations cause Menkes and Wilson diseases, respectively. ATP7A/B contains a P-type ATPase core consisting of a membrane transport domain and three cytoplasmic domains, the A, P, and N domains, and a unique amino terminus comprising six consecutive metal-binding domains. Here, we present a cryo-electron microscopy structure of frog ATP7B in a copper-free state. Interacting with both the A and P domains, the metal-binding domains are poised to exert copper-dependent regulation of ATP hydrolysis coupled to transmembrane copper transport. A ring of negatively charged residues lines the cytoplasmic copper entrance that is presumably gated by a conserved basic residue sitting at the center. Within the membrane, a network of copper-coordinating ligands delineates a stepwise copper transport pathway. This work provides the first glimpse into the structure and function of ATP7 proteins and facilitates understanding of disease mechanisms and development of rational therapies.


  • Organizational Affiliation

    Department of Cell Biology and Physiology, Washington University School of Medicine, St. Louis, MO 63110, USA.


Macromolecules
Find similar proteins by:  (by identity cutoff)  |  3D Structure
Entity ID: 1
MoleculeChains Sequence LengthOrganismDetailsImage
P-type Cu(+) transporter1,467Xenopus tropicalisMutation(s): 0 
Gene Names: atp7b
EC: 7.2.2.8
Membrane Entity: Yes 
UniProt
Find proteins for A0A6I8R0A5 (Xenopus tropicalis)
Explore A0A6I8R0A5 
Go to UniProtKB:  A0A6I8R0A5
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt GroupA0A6I8R0A5
Sequence Annotations
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  • Reference Sequence
Experimental Data & Validation

Experimental Data

  • Method: ELECTRON MICROSCOPY
  • Resolution: 3.49 Å
  • Aggregation State: PARTICLE 
  • Reconstruction Method: SINGLE PARTICLE 
EM Software:
TaskSoftware PackageVersion
MODEL REFINEMENTPHENIX
RECONSTRUCTIONcryoSPARC3.2

Structure Validation

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Entry History & Funding Information

Deposition Data


Funding OrganizationLocationGrant Number
National Institutes of Health/National Institute of Neurological Disorders and Stroke (NIH/NINDS)United StatesNS109307
National Institutes of Health/National Cancer Institute (NIH/NCI)United StatesP30 CA008748

Revision History  (Full details and data files)

  • Version 1.0: 2022-03-16
    Type: Initial release
  • Version 1.1: 2024-06-05
    Changes: Data collection, Refinement description