1SO9

Solution Structure of apoCox11, 30 structures


Experimental Data Snapshot

  • Method: SOLUTION NMR
  • Conformers Calculated: 400 
  • Conformers Submitted: 30 
  • Selection Criteria: target function 

wwPDB Validation 3D Report Full Report


This is version 1.2 of the entry. See complete history

Literature

Solution Structure of Cox11, a Novel Type of {beta}-Immunoglobulin-like Fold Involved in CuB Site Formation of Cytochrome c Oxidase.

Banci, L.Bertini, I.Cantini, F.Ciofi-Baffoni, S.Gonnelli, L.Mangani, S.

(2004) J.Biol.Chem. 279: 34833-34839

  • DOI: 10.1074/jbc.M403655200
  • Primary Citation of Related Structures:  

  • PubMed Abstract: 
  • Cytochrome c oxidase assembly process involves many accessory proteins including Cox11, which is a copper-binding protein required for Cu incorporation into the Cu(B) site of cytochrome c oxidase. In a genome wide search, a number of Cox11 homologs a ...

    Cytochrome c oxidase assembly process involves many accessory proteins including Cox11, which is a copper-binding protein required for Cu incorporation into the Cu(B) site of cytochrome c oxidase. In a genome wide search, a number of Cox11 homologs are found in all of the eukaryotes with complete genomes and in several Gram-negative bacteria. All of them possess a highly homologous soluble domain and contain an N-terminal fragment that anchors the protein to the membrane. An anchor-free construct of 164 amino acids was obtained from Sinorhizobium meliloti, and the first structure of this class of proteins is reported here. The apoform has an immunoglobulin-like fold with a novel type of beta-strand organization. The copper binding motif composed of two highly conserved cysteines is located on one side of the beta-barrel structure. The apoprotein is monomeric in the presence of dithiothreitol, whereas it dimerizes in the absence of the reductant. When copper(I) binds, NMR and extended x-ray absorption fine structure (EXAFS) data indicate a dimeric protein state with two thiolates bridging two copper(I) ions. The present results advance the knowledge on the poorly understood molecular aspects of cytochrome c oxidase assembly.


    Organizational Affiliation

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




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
Cytochrome C oxidase assembly protein ctaG
A
164Rhizobium meliloti (strain 1021)Mutation(s): 0 
Gene Names: ctaG
Find proteins for Q92RG6 (Rhizobium meliloti (strain 1021))
Go to UniProtKB:  Q92RG6
Experimental Data & Validation

Experimental Data

  • Method: SOLUTION NMR
  • Conformers Calculated: 400 
  • Conformers Submitted: 30 
  • Selection Criteria: target function 
  • Olderado: 1SO9 Olderado

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History 

Deposition Data

Revision History 

  • Version 1.0: 2004-08-10
    Type: Initial release
  • Version 1.1: 2008-04-29
    Type: Version format compliance
  • Version 1.2: 2011-07-13
    Type: Version format compliance