1K4D Potassium Channel KcsA-Fab complex in low concentration of K+ date
authors Zhou, Y., Morais-Cabral, J.H., Kaufman, A., MacKinnon, R.
compound source
symmetry
R_factor
R_Free 0.235
crystal
cell
length a length b length c angle alpha angle beta angle gamma
method X-Ray Diffractionresolution 2.30
ligand DGA, F09, K, NA enzyme
related structures by homologous chain: 1C08, 1EJO, 1M7D, 1R3I, 1S5H, 1XF3
Gene
Ontology
ChainFunctionProcessComponent
B


C


Primary referenceChemistry of ion coordination and hydration revealed by a K+ channel-Fab complex at 2.0 A resolution., Zhou Y, Morais-Cabral JH, Kaufman A, MacKinnon R, Nature 2001 Nov 1;414(6859):43-8. PMID:11689936
Data retrieval
  • Asymmetric unit, PDB entry: [header only] [complete with coordinates] (93 Kb) [Save to disk]
  • Biological Unit Coordinates (1k4d.pdb1.gz) 339 Kb
  • LPC: Ligand-Protein Contacts for 1K4D
  • CSU: Contacts of Structural Units for 1K4D
  • Likely Quarternary Molecular Structure file(s) for 1K4D
  • Structure Factors (337 Kb)
  • Retrieve 1K4D in mmCIF format [Save to disk]
  • SEQRES to COORDINATES correlation for 1K4D from S2C, [Save to disk]
  • Re-refined 1k4d structure from PDB_REDO, a databank with updated and optimised macromolecular X-ray diffraction structure models
  • View 1K4D 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 1K4D
  • 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 1K4D, from MSDmotif at EBI
  • Classification of representative domains in scop (Structural Classification of Proteins)
        - Domain d1k4da1, region A:1-118 [Jmol] [rasmolscript] [script source]
        - Domain d1k4da2, region A:119-219 [Jmol] [rasmolscript] [script source]
        - Domain d1k4db1, region B:1-107 [Jmol] [rasmolscript] [script source]
        - Domain d1k4db2, region B:108-212 [Jmol] [rasmolscript] [script source]
        - Domain d1k4dc_, region C [Jmol] [rasmolscript] [script source]
  • Class (fold), Architecture (subfold), Topology, Homologous superfamily from CATH
  • Summaries and structural analyses of PDB data files from PDBSum
  • Identification of Protein Pockets & Cavities at CASTp
  • Sequence-derived information
  • View one-letter amino acid or nucleotide sequence for each chain: [1k4d_C] [1k4d_B] [1k4d] [1k4d_A]
  • SWISS-PROT database: [P01837] [P0A334]
  • Belongs to the voltage-gated ion channel (vic) superfamily according to TCDB.
  • Domain organization of [IGKC_MOUSE] [KCSA_STRLI] by SWISSPFAM
  • Domains found in 1K4D: [IG_like] [IGv ] by SMART
  • Other resources with information on 1K4D
  • Community annotation for 1K4D 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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