1KPK Membrane Protein date Dec 31, 2001
title Crystal Structure Of The Clc Chloride Channel From E. Coli
authors R.Dutzler, E.B.Campbell, M.Cadene, B.T.Chait, R.Mackinnon
compound source
Molecule: Putative Channel Transporter
Chain: A, B, C, D, E, F
Synonym: Clc Chloride Channel Subunit
Engineered: Yes
 Organism_scientific: Escherichia Coli
Organism_taxid: 562
Gene: Yadq
Expression_system: Escherichia Coli Bl21(De3)
Expression_system_taxid: 469008
Expression_system_strain: Bl21 De3
Expression_system_vector_type: Plasmid
Expression_system_plasmid: Pet28b+
symmetry Space Group: P 21 21 21
R_factor 0.290 R_Free 0.301
crystal
cell
length a length b length c angle alpha angle beta angle gamma
105.660 152.525 263.064 90.00 90.00 90.00
method X-Ray Diffractionresolution 3.50 Å
Gene
Ontology
ChainFunctionProcessComponent
F, A, D, C, E, B


Primary referenceX-ray structure of a ClC chloride channel at 3.0 A reveals the molecular basis of anion selectivity., Dutzler R, Campbell EB, Cadene M, Chait BT, MacKinnon R, Nature 2002 Jan 17;415(6869):287-94. PMID:11796999
Data retrieval
  • Asymmetric unit, PDB entry: [header only] [complete with coordinates] (414 Kb) [Save to disk]
  • Biological Unit Coordinates (1kpk.pdb1.gz) 138 Kb
  • Biological Unit Coordinates (1kpk.pdb2.gz) 139 Kb
  • Biological Unit Coordinates (1kpk.pdb3.gz) 139 Kb
  • CSU: Contacts of Structural Units for 1KPK
  • Likely Quarternary Molecular Structure file(s) for 1KPK
  • Structure Factors (457 Kb)
  • Retrieve 1KPK in mmCIF format [Save to disk]
  • SEQRES to COORDINATES correlation for 1KPK from S2C, [Save to disk]
  • Re-refined 1kpk structure from PDB_REDO, a databank with updated and optimised macromolecular X-ray diffraction structure models
    • View 1KPK in 3D
  • Proteopedia, because life has more than 2D.
  • On Jmol, a nice Rasmol like molecule viewer. This is good for easiest viewing of basic structure.
  • On FirstGlance, an excellent tool for a guided tour on the structure components, by E. Martz.
    • Visual 3D analysis of 1KPK
  • Ramachandran plot from PDBSum
    • Structure-derived information
  • Electron Density related parameters from EDS Electron Density Server, at Upsala
  • Dipole moment, from Dipole Server at Weizmann Institute
  • 3D motif for 1KPK, from MSDmotif at EBI
  • Classification of representative domains in scop (Structural Classification of Proteins)
        - Domain d1kpka_, region A [Jmol] [rasmolscript] [script source]
        - Domain d1kpkb_, region B [Jmol] [rasmolscript] [script source]
        - Domain d1kpkc_, region C [Jmol] [rasmolscript] [script source]
        - Domain d1kpkd_, region D [Jmol] [rasmolscript] [script source]
        - Domain d1kpke_, region E [Jmol] [rasmolscript] [script source]
        - Domain d1kpkf_, region F [Jmol] [rasmolscript] [script source]
    • Sequence-derived information
  • View one-letter amino acid or nucleotide sequence for each chain: [1kpk_E] [1kpk_B] [1kpk_D] [1kpk_F] [1kpk_A] [1kpk_C] [1kpk]
  • SWISS-PROT database: [P37019]
  • Belongs to the chloride carrier/channel (clc) family according to TCDB.
  • Domain organization of [CLCA_ECOLI] by SWISSPFAM
    • Other resources with information on 1KPK
  • Community annotation for 1KPK at PDBWiki (http://pdbwiki.org)
  • MMDB (Entrez's Structure Database)
    • Movements, Movies and Images
  • Images from IMB Jena Image Library of Biological Macromolecules.

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