2LGQ | pdb_00002lgq

Human C30S/C59S-Cox17 mutant

• PDB DOI: https://doi.org/10.2210/pdb2LGQ/pdb
• BMRB: 17821

• Classification: METAL TRANSPORT
• Organism(s): Homo sapiens
• Expression System: Escherichia coli BL21(DE3)
• Mutation(s): Yes 


• Deposited: 2011-08-01 Released: 2011-08-17 
• Deposition Author(s): Bertini, I., Ciofi-Baffoni, S., Gallo, A.

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Experimental Data Snapshot

• Method: SOLUTION NMR
• Conformers Calculated: 400 
• Conformers Submitted: 20 
• Selection Criteria: target function 

Literature

Functional role of two interhelical disulfide bonds in human cox17 protein from a structural perspective.

Banci, L., Bertini, I., Cefaro, C., Ciofi-Baffoni, S., Gallo, A.

(2011) J Biological Chem 286: 34382-34390

• PubMed: 21816817 
• DOI: https://doi.org/10.1074/jbc.M111.246223
• Primary Citation Related Structures: 
  2LGQ


• PubMed Abstract: 
  

  Human Cox17 is the mitochondrial copper chaperone responsible for supplying copper ions, through the assistance of Sco1, Sco2, and Cox11, to cytochrome c oxidase, the terminal enzyme of the mitochondrial energy-transducing respiratory chain. It consists of a coiled coil-helix-coiled coil-helix domain stabilized by two disulfide bonds and binds one copper(I) ion through a Cys-Cys motif. Here, the structures and the backbone mobilities of two Cox17 mutated forms with only one interhelical disulfide bond have been analyzed. It appears that the inner disulfide bond (formed by Cys-36 and Cys-45) stabilizes interhelical hydrophobic interactions, providing a structure with essentially the same structural dynamic properties of the mature Cox17 state. On the contrary, the external disulfide bond (formed by Cys-26 and Cys-55) generates a conformationally flexible α-helical protein, indicating that it is not able to stabilize interhelical packing contacts, but is important for structurally organizing the copper-binding site region.

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Organizational Affiliation: 
• Magnetic Resonance Center Centro Risonanze Magnetiche and Department of Chemistry, University of Florence, Via Luigi Sacconi 6, 50019 Sesto Fiorentino, Florence, Italy.

Biological Assembly 1  

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

Biological assembly 1 assigned by authors.

Macromolecule Content 

• Total Structure Weight: 7.29 kDa 
• Atom Count: 506 
• Modeled Residue Count: 67 
• Deposited Residue Count: 67 
• Unique protein chains: 1

Macromolecules

Entity ID: 1
Molecule	Chains	Sequence Length	Organism	Details	Image
Cytochrome c oxidase copper chaperone	A	67	Homo sapiens	Mutation(s): 2  Gene Names: COX17
UniProt & NIH Common Fund Data Resources
Find proteins for Q14061 (Homo sapiens) Explore Q14061  Go to UniProtKB:  Q14061
PHAROS:  Q14061 GTEx:  ENSG00000138495

Experimental Data & Validation

Experimental Data

• Method: SOLUTION NMR
• Conformers Calculated: 400 
• Conformers Submitted: 20 
• Selection Criteria: target function 

Structure Validation

Entry History 

Deposition Data

• Released Date: 2011-08-17 
Deposition Author(s): Bertini, I., Ciofi-Baffoni, S., Gallo, A.

Revision History  

• Version 1.0: 2011-08-17
  Type: Initial release
  
• Version 1.1: 2011-10-12
  Changes: Database references
• Version 1.2: 2011-10-26
  Changes: Database references
• Version 1.3: 2023-06-14
  Changes: Data collection, Database references, Other
• Version 1.4: 2024-11-20
  Changes: Data collection, Database references, Structure summary