4A46

Crosstalk between Cu(I) and Zn(II) homeostasis

• PDB DOI: https://doi.org/10.2210/pdb4A46/pdb

• Classification: TRANSPORT PROTEIN
• Organism(s): Synechocystis sp. PCC 6803
• Expression System: Escherichia coli BL21(DE3)
• Mutation(s): No 


• Deposited: 2011-10-07 Released: 2012-12-12 
• Deposition Author(s): Badarau, A., Basle, A., Firbank, S.J., Denninson, C.

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Experimental Data Snapshot

• Method: X-RAY DIFFRACTION
• Resolution: 1.85 Å
• R-Value Free: 0.243 
• R-Value Work: 0.192 
• R-Value Observed: 0.194 

Starting Model: experimental

Literature

Crosstalk between Cu(I) and Zn(II) Homeostasis Via Atx1 and Cognate Domains.

Badarau, A., Basle, A., Firbank, S.J., Dennison, C.

(2013) Chem Commun (Camb) 49: 8000

• PubMed: 23926594 
• DOI: https://doi.org/10.1039/c3cc42709a
• Primary Citation of Related Structures:  
  4A46


• PubMed Abstract: 
  

  The copper metallochaperone Atx1 and the N-terminal metal-binding domain of a copper-transporting ATP-ase can form tight Zn(II)-mediated hetero-complexes in both cyanobacteria and humans. Copper and zinc homeostasis could be linked by metal binding to these CXXC-containing proteins.

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Organizational Affiliation: 

Institute for Cell and Molecular Biosciences, Medical School, Newcastle University, Newcastle upon Tyne, NE2 4HH, UK.

Biological Assembly 1  

Global Symmetry: Cyclic - C2  (Explore in 3D)
Global Stoichiometry: Homo 4-mer - A4 

Biological assembly 1 assigned by authors and generated by PISA (software)

Macromolecule Content

• Total Structure Weight: 26.48 kDa 
• Atom Count: 1,937 
• Modelled Residue Count: 252 
• Deposited Residue Count: 252 
• Unique protein chains: 1

Macromolecules

Entity ID: 1
Molecule	Chains	Sequence Length	Organism	Details	Image
SSR2857 PROTEIN	A, B, C, D	63	Synechocystis sp. PCC 6803	Mutation(s): 0
UniProt
Find proteins for P73213 (Synechocystis sp. (strain ATCC 27184 / PCC 6803 / Kazusa)) Explore P73213  Go to UniProtKB:  P73213

Small Molecules

Ligands 3 Unique
ID	Chains	Name / Formula / InChI Key	2D Diagram
ZN	E [auth A], G [auth C]	ZINC ION Zn PTFCDOFLOPIGGS-UHFFFAOYSA-N
CL	H [auth C], J [auth D]	CHLORIDE ION Cl VEXZGXHMUGYJMC-UHFFFAOYSA-M
NA	F [auth A], I [auth C]	SODIUM ION Na FKNQFGJONOIPTF-UHFFFAOYSA-N

Experimental Data & Validation

Experimental Data

• Method: X-RAY DIFFRACTION
• Resolution: 1.85 Å
• R-Value Free: 0.243 
• R-Value Work: 0.192 
• R-Value Observed: 0.194 
• Space Group: P 1

Unit Cell:

Length ( Å )	Angle ( ˚ )
a = 30.71	α = 83.34
b = 41.99	β = 89.52
c = 45.24	γ = 75.28

Software Package:

Software Name	Purpose
REFMAC	refinement
iMOSFLM	data reduction
SCALA	data scaling
MOLREP	phasing

Structure Validation

Entry History 

Deposition Data

• Released Date: 2012-12-12 
Deposition Author(s): Badarau, A., Basle, A., Firbank, S.J., Denninson, C.

Revision History  

• Version 1.0: 2012-12-12
  Type: Initial release
  
• Version 1.1: 2014-02-05
  Changes: Database references, Source and taxonomy
• Version 1.2: 2023-12-20
  Changes: Data collection, Database references, Derived calculations, Other, Refinement description