2D2Z

Crystal structure of Soluble Form Of CLIC4


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.2 Å
  • R-Value Free: 0.262 
  • R-Value Work: 0.216 

wwPDB Validation 3D Report Full Report


This is version 1.3 of the entry. See complete history

Literature

Trimeric structure of the wild soluble chloride intracellular ion channel CLIC4 observed in crystals

Li, Y.F.Li, D.F.Zeng, Z.H.Wang, D.C.

(2006) Biochem.Biophys.Res.Commun. 343: 1272-1278

  • DOI: 10.1016/j.bbrc.2006.03.099

  • PubMed Abstract: 
  • The crystal structure of a wild type of the human soluble chloride intracellular ion channel CLIC4 (wCLIC4) has been determined at a resolution of 2.2A. The structure shows a homotrimer in an asymmetric unit, which is first observed in CLICs. The ass ...

    The crystal structure of a wild type of the human soluble chloride intracellular ion channel CLIC4 (wCLIC4) has been determined at a resolution of 2.2A. The structure shows a homotrimer in an asymmetric unit, which is first observed in CLICs. The assembly of the trimer takes a unique triple interaction mode between three monomers with a hydrogen-bond network and hydrophobic contacts. Through such complicated interactions, the homotrimer of wCLIC4 is firmly stabilized. The structure shows an oligomeric mode with a unique assembly mechanism by which the oligomerization of CLIC4 can be performed without any intramolecular disulfide bond formation. It indicated a possibility that CLIC4 may take a unique structural organization distinct from CLIC1 for docking with lipid bilayers. In addition, the structure shows distinct conformational states of the h2 region for respective monomers of the trimer, which reveal an intrinsic conformational susceptibility for this significant region in the structural transition.


    Organizational Affiliation

    National Laboratory of Biomacromolecules, Institute of Biophysics, Chinese Academy of Sciences, Beijing 100101, People's Republic of China.




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
Chloride intracellular channel protein 4
A, B, C
261Homo sapiensMutation(s): 0 
Gene Names: CLIC4
Find proteins for Q9Y696 (Homo sapiens)
Go to Gene View: CLIC4
Go to UniProtKB:  Q9Y696
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.2 Å
  • R-Value Free: 0.262 
  • R-Value Work: 0.216 
  • Space Group: P 1 21 1
Unit Cell:
Length (Å)Angle (°)
a = 73.190α = 90.00
b = 86.050β = 112.99
c = 73.380γ = 90.00
Software Package:
Software NamePurpose
CNSrefinement
CrystalCleardata reduction
CCP4model building
CCP4phasing
SCALAdata scaling
crystaldata collection
CCP4data scaling

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History 

Deposition Data

Revision History 

  • Version 1.0: 2006-05-16
    Type: Initial release
  • Version 1.1: 2008-04-30
    Type: Version format compliance
  • Version 1.2: 2011-07-13
    Type: Version format compliance
  • Version 1.3: 2017-10-11
    Type: Refinement description