Experimental Data Snapshot

  • Method: SOLUTION NMR
  • Conformers Calculated: 35 
  • Conformers Submitted: 
  • Selection Criteria: LEAST RESTRAINT VIOLATION 

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Solution structure of oxidized horse heart cytochrome c.

Banci, L.Bertini, I.Gray, H.B.Luchinat, C.Reddig, T.Rosato, A.Turano, P.

(1997) Biochemistry 36: 9867-9877

  • DOI: https://doi.org/10.1021/bi970724w
  • Primary Citation of Related Structures:  

  • PubMed Abstract: 

    The solution structure of oxidized horse heart cytochrome c was obtained at pH 7.0 in 100 mM phosphate buffer from 2278 NOEs and 241 pseudocontact shift constraints. The final structure was refined through restrained energy minimization. A 35-member family, with RMSD values with respect to the average structure of 0.70 +/- 0.11 A and 1.21 +/- 0.14 A for the backbone and all heavy atoms, respectively, and with an average penalty function of 130 +/- 4.0 kJ/mol and 84 +/- 3.7 kJ/mol for NOE and pseudocontact shift constraints, respectively (corresponding to a target function of 0.9 A2 and 0.2 A2), was obtained. The solution structure is somewhat different from that recently reported (Qi et al., 1996) and appears to be similar to the X-ray structure of the same oxidation state (Bushnell et al., 1990). A noticeable difference is a rotation of 17 +/- 8 degrees of the imidazole plane between solid and solution structure. Detailed and accurate structural determinations are important within the frame of the current debate of the structural rearrangements occurring upon oxidation or reduction. From the obtained magnetic susceptibility tensor a separation of the hyperfine shifts into their contact and pseudocontact contributions is derived and compared to that of the analogous isoenzyme from S. cerevisiae and to previous results.

  • Organizational Affiliation

    Department of Chemistry, University of Florence, Italy.

Find similar proteins by:  (by identity cutoff)  |  3D Structure
Entity ID: 1
MoleculeChains Sequence LengthOrganismDetailsImage
CYTOCHROME C104Equus caballusMutation(s): 0 
Find proteins for P00004 (Equus caballus)
Explore P00004 
Go to UniProtKB:  P00004
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt GroupP00004
Sequence Annotations
  • Reference Sequence
Small Molecules
Ligands 1 Unique
IDChains Name / Formula / InChI Key2D Diagram3D Interactions
Query on HEC

Download Ideal Coordinates CCD File 
B [auth A]HEME C
C34 H34 Fe N4 O4
Experimental Data & Validation

Experimental Data

  • Method: SOLUTION NMR
  • Conformers Calculated: 35 
  • Conformers Submitted: 
  • Selection Criteria: LEAST RESTRAINT VIOLATION 

Structure Validation

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Entry History 

Deposition Data

Revision History  (Full details and data files)

  • Version 1.0: 1997-09-17
    Type: Initial release
  • Version 1.1: 2008-03-24
    Changes: Version format compliance
  • Version 1.2: 2011-07-13
    Changes: Version format compliance
  • Version 1.3: 2022-02-16
    Changes: Data collection, Database references, Derived calculations, Other