2N18

Dominant form of the low-affinity complex of yeast cytochrome c and cytochrome c peroxidase


Experimental Data Snapshot

  • Method: SOLUTION NMR
  • Conformers Calculated: 100 
  • Conformers Submitted: 15 
  • Selection Criteria: structures with the lowest energy 

wwPDB Validation   3D Report Full Report


This is version 1.2 of the entry. See complete history


Literature

The low-affinity complex of cytochrome c and its peroxidase.

Van de Water, K.Sterckx, Y.G.Volkov, A.N.

(2015) Nat Commun 6: 7073-7073

  • DOI: https://doi.org/10.1038/ncomms8073
  • Primary Citation of Related Structures:  
    2N18

  • PubMed Abstract: 

    The complex of yeast cytochrome c peroxidase and cytochrome c is a paradigm of the biological electron transfer (ET). Building on seven decades of research, two different models have been proposed to explain its functional redox activity. One postulates that the intermolecular ET occurs only in the dominant, high-affinity protein-protein orientation, while the other posits formation of an additional, low-affinity complex, which is much more active than the dominant one. Unlike the high-affinity interaction-extensively studied by X-ray crystallography and NMR spectroscopy-until now the binding of cytochrome c to the low-affinity site has not been observed directly, but inferred mainly from kinetics experiments. Here we report the structure of this elusive, weak protein complex and show that it consists of a dominant, inactive bound species and an ensemble of minor, ET-competent protein-protein orientations, which summarily account for the experimentally determined value of the ET rate constant.


  • Organizational Affiliation

    1] Jean Jeener NMR Centre, Structural Biology Brussels, Vrije Universiteit Brussel, Pleinlaan 2, Brussels 1050, Belgium [2] Structural Biology Research Center, VIB, Pleinlaan 2, Brussels 1050, Belgium.


Macromolecules
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Entity ID: 1
MoleculeChains Sequence LengthOrganismDetailsImage
Cytochrome c peroxidase, mitochondrial294Saccharomyces cerevisiae S288CMutation(s): 2 
Gene Names: CCP1CCPCPOYKR066C
EC: 1.11.1.5
UniProt
Find proteins for P00431 (Saccharomyces cerevisiae (strain ATCC 204508 / S288c))
Explore P00431 
Go to UniProtKB:  P00431
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt GroupP00431
Sequence Annotations
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  • Reference Sequence
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Entity ID: 2
MoleculeChains Sequence LengthOrganismDetailsImage
Cytochrome c iso-1108Saccharomyces cerevisiae S288CMutation(s): 2 
Gene Names: CYC1YJR048WJ1653
UniProt
Find proteins for P00044 (Saccharomyces cerevisiae (strain ATCC 204508 / S288c))
Explore P00044 
Go to UniProtKB:  P00044
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt GroupP00044
Sequence Annotations
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  • Reference Sequence
Find similar proteins by:  (by identity cutoff)  |  3D Structure
Entity ID: 3
MoleculeChains Sequence LengthOrganismDetailsImage
Cytochrome c iso-1108Saccharomyces cerevisiae S288CMutation(s): 0 
Gene Names: CYC1YJR048WJ1653
UniProt
Find proteins for P00044 (Saccharomyces cerevisiae (strain ATCC 204508 / S288c))
Explore P00044 
Go to UniProtKB:  P00044
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt GroupP00044
Sequence Annotations
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  • Reference Sequence
Experimental Data & Validation

Experimental Data

  • Method: SOLUTION NMR
  • Conformers Calculated: 100 
  • Conformers Submitted: 15 
  • Selection Criteria: structures with the lowest energy 

Structure Validation

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Entry History 

Deposition Data

Revision History  (Full details and data files)

  • Version 1.0: 2015-05-13
    Type: Initial release
  • Version 1.1: 2015-05-20
    Changes: Database references
  • Version 1.2: 2024-10-09
    Changes: Data collection, Database references, Derived calculations, Structure summary