1K0M

Crystal structure of a soluble monomeric form of CLIC1 at 1.4 angstroms


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.4 Å
  • R-Value Free: 0.178 
  • R-Value Work: 0.138 

wwPDB Validation 3D Report Full Report


This is version 1.2 of the entry. See complete history

Literature

Crystal structure of a soluble form of the intracellular chloride ion channel CLIC1 (NCC27) at 1.4-A resolution.

Harrop, S.J.DeMaere, M.Z.Fairlie, W.D.Reztsova, T.Valenzuela, S.M.Mazzanti, M.Tonini, R.Qiu, M.R.Jankova, L.Warton, K.Bauskin, A.R.Wu, W.M.Pankhurst, S.Campbell, T.J.Breit, S.N.Curmi, P.M.

(2001) J.Biol.Chem. 276: 44993-45000

  • DOI: 10.1074/jbc.M107804200
  • Primary Citation of Related Structures:  

  • PubMed Abstract: 
  • CLIC1 (NCC27) is a member of the highly conserved class of chloride ion channels that exists in both soluble and integral membrane forms. Purified CLIC1 can integrate into synthetic lipid bilayers forming a chloride channel with similar properties to ...

    CLIC1 (NCC27) is a member of the highly conserved class of chloride ion channels that exists in both soluble and integral membrane forms. Purified CLIC1 can integrate into synthetic lipid bilayers forming a chloride channel with similar properties to those observed in vivo. The structure of the soluble form of CLIC1 has been determined at 1.4-A resolution. The protein is monomeric and structurally homologous to the glutathione S-transferase superfamily, and it has a redox-active site resembling glutaredoxin. The structure of the complex of CLIC1 with glutathione shows that glutathione occupies the redox-active site, which is adjacent to an open, elongated slot lined by basic residues. Integration of CLIC1 into the membrane is likely to require a major structural rearrangement, probably of the N-domain (residues 1-90), with the putative transmembrane helix arising from residues in the vicinity of the redox-active site. The structure indicates that CLIC1 is likely to be controlled by redox-dependent processes.


    Organizational Affiliation

    Initiative for Biomolecular Structure, School of Physics and the Department of Medicine, University of New South Wales, New South Wales 2052, Australia.




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
CHLORIDE INTRACELLULAR CHANNEL PROTEIN 1
A, B
241Homo sapiensMutation(s): 1 
Gene Names: CLIC1 (G6, NCC27)
Find proteins for O00299 (Homo sapiens)
Go to Gene View: CLIC1
Go to UniProtKB:  O00299
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.4 Å
  • R-Value Free: 0.178 
  • R-Value Work: 0.138 
  • Space Group: P 1 21 1
Unit Cell:
Length (Å)Angle (°)
a = 45.271α = 90.00
b = 55.332β = 90.02
c = 89.140γ = 90.00
Software Package:
Software NamePurpose
MLPHAREphasing
DENZOdata reduction
REFMACrefinement
SCALEPACKdata scaling

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History 

Revision History 

  • Version 1.0: 2001-12-12
    Type: Initial release
  • Version 1.1: 2008-04-27
    Type: Version format compliance
  • Version 1.2: 2011-07-13
    Type: Version format compliance