NMR structure of the Y48pCMF variant of human cytochrome c in its reduced state

Experimental Data Snapshot

  • Method: SOLUTION NMR
  • Conformers Calculated: 200 
  • Conformers Submitted: 20 
  • Selection Criteria: target function 

wwPDB Validation   3D Report Full Report

This is version 1.3 of the entry. See complete history


Structural basis of mitochondrial dysfunction in response to cytochrome c phosphorylation at tyrosine 48.

Moreno-Beltran, B.Guerra-Castellano, A.Diaz-Quintana, A.Del Conte, R.Garcia-Maurino, S.M.Diaz-Moreno, S.Gonzalez-Arzola, K.Santos-Ocana, C.Velazquez-Campoy, A.De la Rosa, M.A.Turano, P.Diaz-Moreno, I.

(2017) Proc Natl Acad Sci U S A 114: E3041-E3050

  • DOI: https://doi.org/10.1073/pnas.1618008114
  • Primary Citation of Related Structures:  

  • PubMed Abstract: 

    Regulation of mitochondrial activity allows cells to adapt to changing conditions and to control oxidative stress, and its dysfunction can lead to hypoxia-dependent pathologies such as ischemia and cancer. Although cytochrome c phosphorylation-in particular, at tyrosine 48-is a key modulator of mitochondrial signaling, its action and molecular basis remain unknown. Here we mimic phosphorylation of cytochrome c by replacing tyrosine 48 with p -carboxy-methyl-l-phenylalanine ( p CMF). The NMR structure of the resulting mutant reveals significant conformational shifts and enhanced dynamics around p CMF that could explain changes observed in its functionality: The phosphomimetic mutation impairs cytochrome c diffusion between respiratory complexes, enhances hemeprotein peroxidase and reactive oxygen species scavenging activities, and hinders caspase-dependent apoptosis. Our findings provide a framework to further investigate the modulation of mitochondrial activity by phosphorylated cytochrome c and to develop novel therapeutic approaches based on its prosurvival effects.

  • Organizational Affiliation

    Institute of Biocomputation and Physics of Complex Systems (BIFI), Joint Unit BIFI-Instituto Química-Física Rocasolano (CSIC), Universidad de Zaragoza, 50018 Zaragoza, Spain.

Find similar proteins by:  (by identity cutoff)  |  3D Structure
Entity ID: 1
MoleculeChains Sequence LengthOrganismDetailsImage
Cytochrome c104Homo sapiensMutation(s): 1 
Gene Names: CYCSCYC
UniProt & NIH Common Fund Data Resources
Find proteins for P99999 (Homo sapiens)
Explore P99999 
Go to UniProtKB:  P99999
PHAROS:  P99999
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt GroupP99999
Sequence Annotations
  • Reference Sequence
Small Molecules
Ligands 1 Unique
IDChains Name / Formula / InChI Key2D Diagram3D Interactions
Query on MH0

Download Ideal Coordinates CCD File 
B [auth A]Mesoheme
C34 H36 Fe N4 O4
Modified Residues  1 Unique
IDChains TypeFormula2D DiagramParent
Query on 1PA
Experimental Data & Validation

Experimental Data

  • Method: SOLUTION NMR
  • Conformers Calculated: 200 
  • Conformers Submitted: 20 
  • Selection Criteria: target function 

Structure Validation

View Full Validation Report

Entry History 

Deposition Data

Revision History  (Full details and data files)

  • Version 1.0: 2016-12-14
    Type: Initial release
  • Version 1.1: 2017-03-29
    Changes: Database references
  • Version 1.2: 2017-04-19
    Changes: Database references
  • Version 1.3: 2017-04-26
    Changes: Database references