3N7D

Crystal structure of CopK bound to Cu(I) and Cu(II)

• PDB DOI: https://doi.org/10.2210/pdb3N7D/pdb

• Classification: METAL BINDING PROTEIN
• Organism(s): Cupriavidus metallidurans CH34
• Expression System: Escherichia coli BL21(DE3)
• Mutation(s): No 


• Deposited: 2010-05-27 Released: 2011-06-01 
• Deposition Author(s): Ash, M.-R., Maher, M.J.

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Experimental Data Snapshot

• Method: X-RAY DIFFRACTION
• Resolution: 2.15 Å
• R-Value Free: 0.276 
• R-Value Work: 0.219 
• R-Value Observed: 0.224 

Literature

Two new crystal forms of copper resistance protein CopK

Ash, M.-R., Maher, M.J.

To be published.

Biological Assembly 1  

Global Symmetry: Cyclic - C2  (Explore in 3D)
Global Stoichiometry: Homo 2-mer - A2 

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

Macromolecule Content

• Total Structure Weight: 16.78 kDa 
• Atom Count: 877 
• Modelled Residue Count: 114 
• Deposited Residue Count: 148 
• Unique protein chains: 1

Macromolecules

Entity ID: 1
Molecule	Chains	Sequence Length	Organism	Details	Image
Copper resistance protein K	A, B	74	Cupriavidus metallidurans CH34	Mutation(s): 0  Gene Names: copK
UniProt
Find proteins for Q58AD3 (Cupriavidus metallidurans (strain ATCC 43123 / DSM 2839 / NBRC 102507 / CH34)) Explore Q58AD3  Go to UniProtKB:  Q58AD3

Small Molecules

Ligands 2 Unique
ID	Chains	Name / Formula / InChI Key	2D Diagram
CU	C [auth A], E [auth B]	COPPER (II) ION Cu JPVYNHNXODAKFH-UHFFFAOYSA-N
CU1	D [auth A]	COPPER (I) ION Cu VMQMZMRVKUZKQL-UHFFFAOYSA-N

Experimental Data & Validation

Experimental Data

• Method: X-RAY DIFFRACTION
• Resolution: 2.15 Å
• R-Value Free: 0.276 
• R-Value Work: 0.219 
• R-Value Observed: 0.224 
• Space Group: C 1 2 1

Unit Cell:

Length ( Å )	Angle ( ˚ )
a = 49.725	α = 90
b = 50.343	β = 116.88
c = 52.053	γ = 90

Software Package:

Software Name	Purpose
DENZO	data reduction
SCALEPACK	data scaling
PHASER	phasing
PHENIX	refinement
PDB_EXTRACT	data extraction
HKL-2000	data reduction
HKL-2000	data scaling

Structure Validation

Entry History 

Deposition Data

• Released Date: 2011-06-01 
Deposition Author(s): Ash, M.-R., Maher, M.J.

Revision History  

• Version 1.0: 2011-06-01
  Type: Initial release
  
• Version 1.1: 2011-07-13
  Changes: Version format compliance
• Version 1.2: 2017-11-08
  Changes: Refinement description
• Version 1.3: 2023-11-01
  Changes: Data collection, Database references, Derived calculations, Refinement description