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SOLUTION STRUCTURE OF REDUCED HORSE HEART CYTOCHROME C, NMR, MINIMIZED AVERAGE STRUCTURE


Experimental Data Snapshot

  • Method: SOLUTION NMR
  • Conformers Calculated: 40 
  • Conformers Submitted: 
  • Selection Criteria: LEAST RESTRAINT VIOLATION 

wwPDB Validation 3D Report Full Report


This is version 1.2 of the entry. See complete history

Literature

Solution structure of reduced horse heart cytochrome c.

Banci, L.Bertini, I.Huber, J.G.Spyroulias, G.A.Turano, P.

(1999) J.Biol.Inorg.Chem. 4: 21-31

  • Primary Citation of Related Structures:  

  • PubMed Abstract: 
  • In the frame of a broad study on the structural differences between the two redox forms of cytochromes to be related to the electron transfer process, the NMR solution structure of horse heart cytochrome c in the reduced form has been determined. The ...

    In the frame of a broad study on the structural differences between the two redox forms of cytochromes to be related to the electron transfer process, the NMR solution structure of horse heart cytochrome c in the reduced form has been determined. The structural data obtained in the present work are compared to those already available in the literature on the same protein and the presence of conformational differences is discussed in the light of the experimental method employed for the structure determination. Redox-state dependent changes are analyzed and in particular they are related to the role of propionate-7 of the heme. Also some hydrogen bonds are changed upon reduction of the heme iron. A substantial similarity is observed for the backbone fold, independently of the oxidation state. At variance, some meaningful differences are observed in the orientation of a few side chains. These changes are related to those found in the case of the highly homologous cytochrome c from Saccharomyces cerevisiae. The exchangeability of the NH protons has been investigated and found to be smaller than in the case of the oxidized protein. We think that this is a characteristic of reduced cytochromes and that mobility is a medium for molecular recognition in vivo.


    Related Citations: 
    • Solution Structure of Horse Heart Ferrocytochrome C Determined by High-Resolution NMR and Restrained Simulated Annealing
      Qi, P.X.,Di Stefano, D.L.,Wand, A.J.
      (1994) Biochemistry 33: 6408


    Organizational Affiliation

    Department of Chemistry, University of Florence, Italy.




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
CYTOCHROME C
A
104Equus caballusMutation(s): 0 
Gene Names: CYCS (CYC)
Find proteins for P00004 (Equus caballus)
Go to Gene View: CYCS
Go to UniProtKB:  P00004
Small Molecules
Ligands 1 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
HEC
Query on HEC

Download SDF File 
Download CCD File 
A
HEME C
C34 H34 Fe N4 O4
HXQIYSLZKNYNMH-LJNAALQVSA-N
 Ligand Interaction
Experimental Data & Validation

Experimental Data

  • Method: SOLUTION NMR
  • Conformers Calculated: 40 
  • Conformers Submitted: 
  • Selection Criteria: LEAST RESTRAINT VIOLATION 
Software Package:
Software NamePurpose
DYANArefinement
DYANAmodel building
AMBERrefinement

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History 

Deposition Data

Revision History 

  • Version 1.0: 1998-12-09
    Type: Initial release
  • Version 1.1: 2008-03-03
    Type: Version format compliance
  • Version 1.2: 2011-07-13
    Type: Version format compliance