1FE4

CRYSTAL STRUCTURE OF MERCURY-HAH1


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.75 Å
  • R-Value Free: 0.218 
  • R-Value Work: 0.204 

wwPDB Validation 3D Report Full Report


This is version 1.2 of the entry. See complete history

Literature

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: 766-771

  • DOI: 10.1038/78999
  • Primary Citation of Related Structures:  1FE0, 1FEE

  • PubMed Abstract: 
  • The Hah1 metallochaperone protein is implicated in copper delivery to the Menkes and Wilson disease proteins. Hah1 and the N-termini of its target proteins belong to a family of metal binding domains characterized by a conserved MT/HCXXC sequence mot ...

    The Hah1 metallochaperone protein is implicated in copper delivery to the Menkes and Wilson disease proteins. Hah1 and the N-termini of its target proteins belong to a family of metal binding domains characterized by a conserved MT/HCXXC sequence motif. The crystal structure of Hah1 has been determined in the presence of Cu(I), Hg(II), and Cd(II). The 1.8 A resolution structure of CuHah1 reveals a copper ion coordinated by Cys residues from two adjacent Hah1 molecules. The CuHah1 crystal structure is the first of a copper chaperone bound to copper and provides structural support for direct metal ion exchange between conserved MT/HCXXC motifs in two domains. The structures of HgHah1 and CdHah1, determined to 1.75 A resolution, also reveal metal ion coordination by two MT/HCXXC motifs. An extended hydrogen bonding network, unique to the complex of two Hah1 molecules, stabilizes the metal binding sites and suggests specific roles for several conserved residues. Taken together, the structures provide models for intermediates in metal ion transfer and suggest a detailed molecular mechanism for protein recognition and metal ion exchange between MT/HCXXC containing domains.


    Organizational Affiliation

    Department of Biochemistry, Molecular Biology, and Cell Biology, Northwestern University, Evanston, Illinois 60208, USA.




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
COPPER TRANSPORT PROTEIN ATOX1
A, B
68Homo sapiensGene Names: ATOX1 (HAH1)
Find proteins for O00244 (Homo sapiens)
Go to Gene View: ATOX1
Go to UniProtKB:  O00244
Small Molecules
Ligands 4 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
SUC
Query on SUC

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A
SUCROSE
C12 H22 O11
CZMRCDWAGMRECN-UGDNZRGBSA-N
 Ligand Interaction
SO4
Query on SO4

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A, B
SULFATE ION
O4 S
QAOWNCQODCNURD-UHFFFAOYSA-L
 Ligand Interaction
IUM
Query on IUM

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A
URANYL (VI) ION
O2 U
IZLHQJIUOZHTLW-UHFFFAOYSA-N
 Ligand Interaction
HG
Query on HG

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A
MERCURY (II) ION
Hg
BQPIGGFYSBELGY-UHFFFAOYSA-N
 Ligand Interaction
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.75 Å
  • R-Value Free: 0.218 
  • R-Value Work: 0.204 
  • Space Group: P 65
Unit Cell:
Length (Å)Angle (°)
a = 79.950α = 90.00
b = 79.950β = 90.00
c = 55.610γ = 120.00
Software Package:
Software NamePurpose
CNSrefinement
AMoREphasing
SCALEPACKdata scaling
CNSphasing
DENZOdata reduction

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History 

Deposition Data

Revision History 

  • Version 1.0: 2001-01-24
    Type: Initial release
  • Version 1.1: 2008-04-27
    Type: Version format compliance
  • Version 1.2: 2011-07-13
    Type: Version format compliance