2ARF

Solution structure of the Wilson ATPase N-domain in the presence of ATP


Experimental Data Snapshot

  • Method: SOLUTION NMR
  • Conformers Calculated: 100 
  • Conformers Submitted: 10 
  • Selection Criteria: target function 

wwPDB Validation   3D Report Full Report


This is version 1.4 of the entry. See complete history


Literature

Solution structure of the N-domain of Wilson disease protein: Distinct nucleotide-binding environment and effects of disease mutations

Dmitriev, O.Tsivkovskii, R.Abildgaard, F.Morgan, C.T.Markley, J.L.Lutsenko, S.

(2006) Proc Natl Acad Sci U S A 103: 5302-5307

  • DOI: https://doi.org/10.1073/pnas.0507416103
  • Primary Citation of Related Structures:  
    2ARF

  • PubMed Abstract: 

    Wilson disease protein (ATP7B) is a copper-transporting P(1B)-type ATPase that regulates copper homeostasis and biosynthesis of copper-containing enzymes in human tissues. Inactivation of ATP7B or related ATP7A leads to severe neurodegenerative disorders, whereas their overexpression contributes to cancer cell resistance to chemotherapeutics. Copper-transporting ATPases differ from other P-type ATPases in their topology and the sequence of their nucleotide-binding domain (N-domain). To gain insight into the structural basis of ATP7B function, we have solved the structure of the ATP7B N-domain in the presence of ATP by using heteronuclear multidimensional NMR spectroscopy. The N-domain consists of a six-stranded beta-sheet with two adjacent alpha-helical hairpins and, unexpectedly, shows higher similarity to the bacterial K(+)-transporting ATPase KdpB than to the mammalian Ca(2+)-ATPase or Na(+),K(+)-ATPase. The common core structure of P-type ATPases is retained in the 3D fold of the N-domain; however, the nucleotide coordination environment of ATP7B within this fold is different. The residues H1069, G1099, G1101, I1102, G1149, and N1150 conserved in the P(1B)-ATPase subfamily contribute to ATP binding. Analysis of the frequent disease mutation H1069Q demonstrates that this mutation does not significantly affect the structure of the N-domain but prevents tight binding of ATP. The structure of the N-domain accounts for the disruptive effects of >30 known Wilson disease mutations. The unique features of the N-domain provide a structural basis for the development of specific inhibitors and regulators of ATP7B.


  • Organizational Affiliation

    Department of Biomolecular Chemistry, University of Wisconsin, Madison, WI 53706, USA. dmitriev@usask.ca


Macromolecules
Find similar proteins by:  (by identity cutoff)  |  3D Structure
Entity ID: 1
MoleculeChains Sequence LengthOrganismDetailsImage
WILSON DISEASE ATPASE165Homo sapiensMutation(s): 3 
Gene Names: ATP7B
EC: 3.6.3.4 (PDB Primary Data), 7.2.2.8 (UniProt)
UniProt & NIH Common Fund Data Resources
Find proteins for P35670 (Homo sapiens)
Explore P35670 
Go to UniProtKB:  P35670
PHAROS:  P35670
GTEx:  ENSG00000123191 
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt GroupP35670
Sequence Annotations
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  • Reference Sequence
Experimental Data & Validation

Experimental Data

  • Method: SOLUTION NMR
  • Conformers Calculated: 100 
  • Conformers Submitted: 10 
  • Selection Criteria: target function 

Structure Validation

View Full Validation Report



Entry History 

Deposition Data

Revision History  (Full details and data files)

  • Version 1.0: 2006-02-28
    Type: Initial release
  • Version 1.1: 2008-04-30
    Changes: Version format compliance
  • Version 1.2: 2011-07-13
    Changes: Version format compliance
  • Version 1.3: 2021-10-20
    Changes: Data collection, Database references, Derived calculations
  • Version 1.4: 2024-05-22
    Changes: Data collection