2LGQ

Human C30S/C59S-Cox17 mutant


Experimental Data Snapshot

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

wwPDB Validation   3D Report Full Report


This is version 1.2 of the entry. See complete history


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 Biol Chem 286: 34382-34390

  • DOI: 10.1074/jbc.M111.246223
  • Primary Citation of 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 ...

    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.


    Organizational Affiliation

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



Macromolecules
Find similar proteins by:  (by identity cutoff)  |  Structure
Entity ID: 1
MoleculeChainsSequence LengthOrganismDetailsImage
Cytochrome c oxidase copper chaperoneA67Homo sapiensMutation(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
Protein Feature View
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  • Reference Sequence
Experimental Data & Validation

Experimental Data

  • Method: SOLUTION NMR
  • Conformers Calculated: 400 
  • Conformers Submitted: 20 
  • Selection Criteria: target function 
  • OLDERADO: 2LGQ Olderado

Structure Validation

View Full Validation Report



Entry History 

Deposition Data

Revision History  (Full details and data files)

  • 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