1CC7

CRYSTAL STRUCTURE OF THE ATX1 METALLOCHAPERONE PROTEIN

• PDB DOI: https://doi.org/10.2210/pdb1CC7/pdb

• Classification: METAL TRANSPORT
• Organism(s): Saccharomyces cerevisiae
• Expression System: Escherichia coli BL21(DE3)
• Mutation(s): No 


• Deposited: 1999-03-04 Released: 1999-12-12 
• Deposition Author(s): Rosenzweig, A.C., Huffman, D.L., Pufahl, M.Y.R.A., Hou, T.V.O., Wernimont, A.K.

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Experimental Data Snapshot

• Method: X-RAY DIFFRACTION
• Resolution: 1.20 Å
• R-Value Free: 0.211 
• R-Value Observed: 0.145 

Literature

Crystal structure of the Atx1 metallochaperone protein at 1.02 A resolution.

Rosenzweig, A.C., Huffman, D.L., Hou, M.Y., Wernimont, A.K., Pufahl, R.A., O'Halloran, T.V.

(1999) Structure 7: 605-617

• PubMed: 10404590 
• DOI: https://doi.org/10.1016/s0969-2126(99)80082-3
• Primary Citation of Related Structures:  
  1CC7, 1CC8


• PubMed Abstract: 
  

  Metallochaperone proteins function in the trafficking and delivery of essential, yet potentially toxic, metal ions to distinct locations and particular proteins in eukaryotic cells. The Atx1 protein shuttles copper to the transport ATPase Ccc2 in yeast cells. Molecular mechanisms for copper delivery by Atx1 and similar human chaperones have been proposed, but detailed structural characterization is necessary to elucidate how Atx1 binds metal ions and how it might interact with Ccc2 to facilitate metal ion transfer.

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Organizational Affiliation: 

Department of Biochemistry, Molecular Biology, and Cell Biology, Northwestern University, Evanston, IL 60208, USA. [e-mail]

Biological Assembly 1  

Global Symmetry: Asymmetric - C1 
Global Stoichiometry: Monomer - A1 

Biological assembly 1 assigned by authors.

Macromolecule Content

• Total Structure Weight: 8.35 kDa 
• Atom Count: 691 
• Modelled Residue Count: 72 
• Deposited Residue Count: 73 
• Unique protein chains: 1

Macromolecules

Entity ID: 1
Molecule	Chains	Sequence Length	Organism	Details	Image
PROTEIN (METALLOCHAPERONE ATX1)	A	73	Saccharomyces cerevisiae	Mutation(s): 0
UniProt
Find proteins for P38636 (Saccharomyces cerevisiae (strain ATCC 204508 / S288c)) Explore P38636  Go to UniProtKB:  P38636

Small Molecules

Ligands 1 Unique
ID	Chains	Name / Formula / InChI Key	2D Diagram
BEN	B [auth A]	BENZAMIDINE C7 H8 N2 PXXJHWLDUBFPOL-UHFFFAOYSA-N

Experimental Data & Validation

Experimental Data

• Method: X-RAY DIFFRACTION
• Resolution: 1.20 Å
• R-Value Free: 0.211 
• R-Value Observed: 0.145 
• Space Group: C 1 2 1

Unit Cell:

Length ( Å )	Angle ( ˚ )
a = 56.65	α = 90
b = 29.6	β = 114.83
c = 40.77	γ = 90

Software Package:

Software Name	Purpose
DENZO	data reduction
SCALEPACK	data scaling
SHELXL-97	refinement

Structure Validation

Entry History 

Deposition Data

• Released Date: 1999-12-12 
Deposition Author(s): Rosenzweig, A.C., Huffman, D.L., Pufahl, M.Y.R.A., Hou, T.V.O., Wernimont, A.K.

Revision History  

• Version 1.0: 1999-12-12
  Type: Initial release
  
• Version 1.1: 2008-04-26
  Changes: Version format compliance
• Version 1.2: 2011-07-13
  Changes: Version format compliance
• Version 1.3: 2023-12-27
  Changes: Data collection, Database references, Derived calculations
• Version 1.4: 2024-04-03
  Changes: Refinement description