2N3Y

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


Literature

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: 10.1073/pnas.1618008114
  • Primary Citation of Related Structures:  
    2N3Y

  • 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 ...

    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

    Instituto de Investigaciones Químicas, cicCartuja, Universidad de Sevilla-Spanish National Scientific Council (CSIC), 41092 Seville, Spain; idiazmoreno@us.es.



Macromolecules
Find similar proteins by:  (by identity cutoff)  |  Structure
Entity ID: 1
MoleculeChainsSequence LengthOrganismDetailsImage
Cytochrome cA104Homo 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
Protein Feature View
Expand
  • Reference Sequence
Small Molecules
Ligands 1 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
MH0
Query on MH0

Download Ideal Coordinates CCD File 
B [auth A]Mesoheme
C34 H36 Fe N4 O4
CKMCSMAXNUVLQI-RGGAHWMASA-N
 Ligand Interaction
Modified Residues  1 Unique
IDChainsTypeFormula2D DiagramParent
1PA
Query on 1PA
AL-PEPTIDE LINKINGC11 H13 N O4PHE
Experimental Data & Validation

Experimental Data

  • Method: SOLUTION NMR
  • Conformers Calculated: 200 
  • Conformers Submitted: 20 
  • Selection Criteria: target function 
  • OLDERADO: 2N3Y Olderado

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