Macromolecule Content

• Total Structure Weight: 7.80 kDa 
• Atom Count: 543 
• Residue Count: 73 
• Unique protein chains: 1

1P8G

The solution structure of apo CopZ from Bacillus subtilis

• DOI: 10.2210/pdb1P8G/pdb

• Classification: CHAPERONE
• Organism(s): Bacillus subtilis
• Expression System: Escherichia coli BL21
• Mutation(s): No 


• Deposited: 2003-05-07 Released: 2003-11-25 
• Deposition Author(s): Banci, L., Bertini, I., Del Conte, R.

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Experimental Data Snapshot

• Method: SOLUTION NMR
• Conformers Calculated: 30 
• Conformers Submitted: 30 
• Selection Criteria: structure with the lowest energy target function 

Literature

Solution Structure of Apo CopZ from Bacillus subtilis: Further Analysis of the Changes Associated with the Presence of Copper

Banci, L., Bertini, I., Del Conte, R.

(2003) Biochemistry 42: 13422-13428

• PubMed: 14621987 
• DOI: 10.1021/bi0353326
• Primary Citation of Related Structures:  
  1P8G


• PubMed Abstract: 
  

The solution structure of apo CopZ from Bacillus subtilis has been determined with the aim of investigating the changes in the hydrophobic interactions around the M-X-C-X-X-C copper(I) binding motif upon metal binding. The methionine of this motif (Met 11 in CopZ) points toward the solvent in apo CopZ, whereas its sulfur atom is close to the metal ion in the metal-loaded protein, though probably not at binding distance. This change is associated with the weakening of the interaction between Leu 37 and Cys 16, present in the apo form, and the formation of an interaction between Met 11 and Tyr 65. Loops 1, 3, and 5 are affected by metal binding. Comparison with the structure of other homologous proteins confirms that often metal binding affects a hydrophobic patch around the metal site, possibly for optimizing and tuning the hydrophobic interactions with the partners. It is also shown that copper(I) exchanges among apo CopZ molecules in slow exchange on the NMR time scale, whereas it is known that such exchange between partner molecules (i.e., metallochaperones and metal pumps) is fast.

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Organizational Affiliation: 

Department of Chemistry and Centro di Risonanze Magnetiche, University of Florence, Via Luigi Sacconi 6, 50019, Sesto Fiorentino, Italy.

Macromolecules

Entity ID: 1
Molecule	Chains	Sequence Length	Organism	Details	Image
similar to mercuric transport protein	A	73	Bacillus subtilis	Mutation(s): 0  Gene Names: bscopz
Find proteins for O32221 (Bacillus subtilis (strain 168)) Explore O32221  Go to UniProtKB:  O32221

Experimental Data & Validation

Experimental Data

• Method: SOLUTION NMR
• Conformers Calculated: 30 
• Conformers Submitted: 30 
• Selection Criteria: structure with the lowest energy target function 
• OLDERADO: 1P8G Olderado

Structure Validation

Entry History 

Deposition Data

• Deposited Date: 2003-05-07 
• Released Date: 2003-11-25 
Deposition Author(s): Banci, L., Bertini, I., Del Conte, R.

Revision History 

• Version 1.0: 2003-11-25
  Type: Initial release
  
• Version 1.1: 2008-04-29
  Changes: Version format compliance
• Version 1.2: 2011-07-13
  Changes: Version format compliance