2XP0

C-terminal cysteine-rich domain of human CHFR


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.978 Å
  • R-Value Free: 0.202 
  • R-Value Work: 0.161 

wwPDB Validation 3D Report Full Report


This is version 1.1 of the entry. See complete history

Literature

Structural Basis of Poly(Adp-Ribose) Recognition by the Multizinc Binding Domain of Checkpoint with Forkhead-Associated and Ring Domains (Chfr).

Oberoi, J.Richards, M.W.Crumpler, S.Brown, N.Blagg, J.Bayliss, R.

(2010) J.Biol.Chem. 285: 39348

  • DOI: 10.1074/jbc.M110.159855
  • Primary Citation of Related Structures:  

  • PubMed Abstract: 
  • Cellular stress in early mitosis activates the antephase checkpoint, resulting in the decondensation of chromosomes and delayed mitotic progression. Checkpoint with forkhead-associated and RING domains (CHFR) is central to this checkpoint, and its ac ...

    Cellular stress in early mitosis activates the antephase checkpoint, resulting in the decondensation of chromosomes and delayed mitotic progression. Checkpoint with forkhead-associated and RING domains (CHFR) is central to this checkpoint, and its activity is ablated in many tumors and cancer cell lines through promoter hypermethylation or mutation. The interaction between the PAR-binding zinc finger (PBZ) of CHFR and poly(ADP-ribose) (PAR) is crucial for a functional antephase checkpoint. We determined the crystal structure of the cysteine-rich region of human CHFR (amino acids 425-664) to 1.9 Å resolution, which revealed a multizinc binding domain of elaborate topology within which the PBZ is embedded. The PBZ of CHFR closely resembles the analogous motifs from aprataxin-like factor and CG1218-PA, which lie within unstructured regions of their respective proteins. Based on co-crystal structures of CHFR bound to several different PAR-like ligands (adenosine 5'-diphosphoribose, adenosine monophosphate, and P(1)P(2)-diadenosine 5'-pyrophosphate), we made a model of the CHFR-PAR interaction, which we validated using site-specific mutagenesis and surface plasmon resonance. The PBZ motif of CHFR recognizes two adenine-containing subunits of PAR and the phosphate backbone that connects them. More generally, PBZ motifs may recognize different numbers of PAR subunits as required to carry out their functions.


    Organizational Affiliation

    Section of Structural Biology, Institute of Cancer Research, Chester Beatty Laboratories, 237 Fulham Road, London SW3 6JB, United Kingdom.




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
E3 UBIQUITIN-PROTEIN LIGASE CHFR
A, B
274Homo sapiensMutation(s): 0 
Gene Names: CHFR (RNF196)
EC: 2.3.2.27
Find proteins for Q96EP1 (Homo sapiens)
Go to Gene View: CHFR
Go to UniProtKB:  Q96EP1
Small Molecules
Ligands 1 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
ZN
Query on ZN

Download SDF File 
Download CCD File 
A, B
ZINC ION
Zn
PTFCDOFLOPIGGS-UHFFFAOYSA-N
 Ligand Interaction
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.978 Å
  • R-Value Free: 0.202 
  • R-Value Work: 0.161 
  • Space Group: C 1 2 1
Unit Cell:
Length (Å)Angle (°)
a = 163.010α = 90.00
b = 52.030β = 105.73
c = 82.520γ = 90.00
Software Package:
Software NamePurpose
MOSFLMdata reduction
PHENIXrefinement
SCALAdata scaling
PHASERphasing

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History 

Deposition Data

Revision History 

  • Version 1.0: 2010-09-29
    Type: Initial release
  • Version 1.1: 2012-09-05
    Type: Derived calculations, Version format compliance