3CJK

Crystal structure of the adduct HAH1-Cd(II)-MNK1.


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.8 Å
  • R-Value Free: 0.283 
  • R-Value Work: 0.226 

wwPDB Validation 3D Report Full Report


This is version 1.1 of the entry. See complete history

Literature

Copper(I)-mediated protein-protein interactions result from suboptimal interaction surfaces.

Banci, L.Bertini, I.Calderone, V.Della-Malva, N.Felli, I.C.Neri, S.Pavelkova, A.Rosato, A.

(2009) Biochem.J. 422: 37-42

  • DOI: 10.1042/BJ20090422

  • PubMed Abstract: 
  • The homoeostasis of metal ions in cells is the result of the contribution of several cellular pathways that involve transient, often weak, protein-protein interactions. Metal transfer typically implies the formation of adducts where the metal itself ...

    The homoeostasis of metal ions in cells is the result of the contribution of several cellular pathways that involve transient, often weak, protein-protein interactions. Metal transfer typically implies the formation of adducts where the metal itself acts as a bridge between proteins, by co-ordinating residues of both interacting partners. In the present study we address the interaction between the human copper(I)-chaperone HAH1 (human ATX1 homologue) and a metal-binding domain in one of its partners, namely the P-type copper-transporting ATPase, ATP7A (ATPase, Cu+ transporting, alpha polypeptide). The adduct was structurally characterized in solution, in the presence of copper(I), and through X-ray crystallography, upon replacing copper(I) with cadmium(II). Further insight was obtained through molecular modelling techniques and site-directed mutagenesis. It was found that the interaction involves a relatively small interface (less than 1000 A(2), 1 A=0.1 nm) with a low fraction of non-polar atoms. These observations provide a possible explanation for the low affinity of the two apoproteins. It appears that electrostatics is important in selecting which domain of the ATPase is able to form detectable amounts of the metal-mediated adduct with HAH1.


    Related Citations: 
    • A NMR study of the interaction of a three-domain construct of ATP7A with copper(I) and copper(I)-HAH1: the interplay of domains.
      Banci, L.,Bertini, I.,Cantini, F.,Chasapis, C.,Hadjiliadis, N.,Rosato, A.
      (2005) J.Biol.Chem. 280: 38259
    • Structural basis for copper transfer by the metallochaperone for the Menkes/Wilson disease proteins.
      Wernimont, A.K.,Huffman, D.L.,Lamb, A.L.,O'Halloran, T.V.,Rosenzweig, A.C.
      (2000) Nat.Struct.Mol.Biol. 7: 766


    Organizational Affiliation

    Magnetic Resonance Center (CERM), University of Florence, Sesto Fiorentino, Italy.




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
Copper transport protein ATOX1
A
68Homo sapiensMutation(s): 0 
Gene Names: ATOX1 (HAH1)
Find proteins for O00244 (Homo sapiens)
Go to Gene View: ATOX1
Go to UniProtKB:  O00244
Entity ID: 2
MoleculeChainsSequence LengthOrganismDetails
Copper-transporting ATPase 1
B
75Homo sapiensMutation(s): 0 
Gene Names: ATP7A (MC1, MNK)
EC: 7.2.2.8
Find proteins for Q04656 (Homo sapiens)
Go to Gene View: ATP7A
Go to UniProtKB:  Q04656
Small Molecules
Ligands 1 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
CD
Query on CD

Download SDF File 
Download CCD File 
B
CADMIUM ION
Cd
WLZRMCYVCSSEQC-UHFFFAOYSA-N
 Ligand Interaction
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.8 Å
  • R-Value Free: 0.283 
  • R-Value Work: 0.226 
  • Space Group: P 21 21 21
Unit Cell:
Length (Å)Angle (°)
a = 47.707α = 90.00
b = 55.274β = 90.00
c = 63.241γ = 90.00
Software Package:
Software NamePurpose
REFMACrefinement
ADSCdata collection
MOSFLMdata reduction
SCALAdata scaling
MOLREPphasing

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History 

Deposition Data

Revision History 

  • Version 1.0: 2008-12-30
    Type: Initial release
  • Version 1.1: 2011-07-13
    Type: Version format compliance