7LU8

Structure of the cryptic HMA domain of the human copper transporter ATP7A


Experimental Data Snapshot

  • Method: SOLUTION NMR
  • Conformers Calculated: 2000 
  • Conformers Submitted: 20 
  • Selection Criteria: structures with the lowest energy 

wwPDB Validation   3D Report Full Report


This is version 1.3 of the entry. See complete history


Literature

At sixes and sevens: cryptic domain in the metal binding chain of the human copper transporter ATP7A.

Uhlemann, E.E.Lee, W.Tonelli, M.Dmitriev, O.Y.

(2021) Biophys J 120: 4600-4607

  • DOI: https://doi.org/10.1016/j.bpj.2021.08.029
  • Primary Citation of Related Structures:  
    7LU8

  • PubMed Abstract: 

    ATP7A and ATP7B are structurally similar but functionally distinct active copper transporters that regulate copper levels in the human cells and deliver copper to the biosynthetic pathways. Both proteins have a chain of six cytosolic metal-binding domains (MBDs) believed to be involved in the copper-dependent regulation of the activity and intracellular localization of these enzymes. Although all the MBDs are quite similar in structure, their spacing differs markedly between ATP7A and ATP7B. We show by NMR that the long polypeptide between MBD1 and MBD2 of ATP7A forms an additional seventh metastable domain, which we called HMA1A (heavy metal associated domain 1A). The structure of HMA1A resembles the MBDs but contains no copper-binding site. The HMA1A domain, which is unique to ATP7A, may modulate regulatory interactions between MBD1-3, contributing to the distinct functional properties of ATP7A and ATP7B.


  • Organizational Affiliation

    Department of Biochemistry, Microbiology and Immunology, University of Saskatchewan, Saskatoon, Saskatchewan, Canada.


Macromolecules
Find similar proteins by:  (by identity cutoff)  |  3D Structure
Entity ID: 1
MoleculeChains Sequence LengthOrganismDetailsImage
Copper-transporting ATPase 176Homo sapiensMutation(s): 0 
Gene Names: ATP7AMC1MNK
EC: 7.2.2.8
UniProt & NIH Common Fund Data Resources
Find proteins for Q04656 (Homo sapiens)
Explore Q04656 
Go to UniProtKB:  Q04656
PHAROS:  Q04656
GTEx:  ENSG00000165240 
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt GroupQ04656
Sequence Annotations
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  • Reference Sequence
Experimental Data & Validation

Experimental Data

  • Method: SOLUTION NMR
  • Conformers Calculated: 2000 
  • Conformers Submitted: 20 
  • Selection Criteria: structures with the lowest energy 

Structure Validation

View Full Validation Report



Entry History & Funding Information

Deposition Data


Funding OrganizationLocationGrant Number
Natural Sciences and Engineering Research Council (NSERC, Canada)CanadaRGPIN-2017-06822

Revision History  (Full details and data files)

  • Version 1.0: 2021-09-15
    Type: Initial release
  • Version 1.1: 2021-11-10
    Changes: Database references
  • Version 1.2: 2023-06-14
    Changes: Other
  • Version 1.3: 2024-05-15
    Changes: Data collection, Database references