1IBX

NMR STRUCTURE OF DFF40 AND DFF45 N-TERMINAL DOMAIN COMPLEX


Experimental Data Snapshot

  • Method: SOLUTION NMR
  • Conformers Calculated: 30 
  • Conformers Submitted: 10 
  • Selection Criteria: structures with the least restraint violations 

wwPDB Validation 3D Report Full Report


This is version 1.2 of the entry. See complete history

Literature

Solution structure of DFF40 and DFF45 N-terminal domain complex and mutual chaperone activity of DFF40 and DFF45.

Zhou, P.Lugovskoy, A.A.McCarty, J.S.Li, P.Wagner, G.

(2001) Proc.Natl.Acad.Sci.USA 98: 6051-6055

  • DOI: 10.1073/pnas.111145098

  • PubMed Abstract: 
  • Apoptotic DNA fragmentation is mediated by a caspase-activated DNA fragmentation factor (DFF)40. Expression and folding of DFF40 require the presence of DFF45, which also acts as a nuclease inhibitor before DFF40 activation by execution caspases. The ...

    Apoptotic DNA fragmentation is mediated by a caspase-activated DNA fragmentation factor (DFF)40. Expression and folding of DFF40 require the presence of DFF45, which also acts as a nuclease inhibitor before DFF40 activation by execution caspases. The N-terminal domains (NTDs) of both proteins are homologous, and their interaction plays a key role in the proper functioning of this two-component system. Here we report that the NTD of DFF45 alone is unstructured in solution, and its folding is induced upon binding to DFF40 NTD. Therefore, folding of both proteins regulates the formation of the DFF40/DFF45 complex. The solution structure of the heterodimeric complex between NTDs of DFF40 and DFF45 reported here shows that the mutual chaperoning includes the formation of an extensive network of intermolecular interactions that bury a hydrophobic cluster inside the interface, surrounded by intermolecular salt bridges.


    Organizational Affiliation

    Department of Biological Chemistry and Molecular Pharmacology, Harvard Medical School, Boston, MA 02115, USA.




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
DNA FRAGMENTATION FACTOR 40
A
86Homo sapiensGene Names: DFFB (CAD, DFF2, DFF40)
EC: 3.-.-.-
Find proteins for O76075 (Homo sapiens)
Go to Gene View: DFFB
Go to UniProtKB:  O76075
Entity ID: 2
MoleculeChainsSequence LengthOrganismDetails
CHIMERA OF IGG BINDING PROTEIN G AND DNA FRAGMENTATION FACTOR 45
B
145Homo sapiensGene Names: DFFA (DFF1, DFF45)
Find proteins for O00273 (Homo sapiens)
Go to Gene View: DFFA
Go to UniProtKB:  O00273
Experimental Data & Validation

Experimental Data

  • Method: SOLUTION NMR
  • Conformers Calculated: 30 
  • Conformers Submitted: 10 
  • Selection Criteria: structures with the least restraint violations 
  • Olderado: 1IBX Olderado

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History 

Deposition Data

Revision History 

  • Version 1.0: 2001-05-02
    Type: Initial release
  • Version 1.1: 2008-04-27
    Type: Version format compliance
  • Version 1.2: 2011-07-13
    Type: Version format compliance