3IFX Membrane Protein date Jul 26, 2009
title Crystal Structure Of The Spin-Labeled Kcsa Mutant V48r1
authors J.A.Cieslak, P.J.Focia, A.Gross
compound source
Molecule: Voltage-Gated Potassium Channel
Chain: A, B, C, D
Fragment: Pore Domain: Unp Residues 1-124
Engineered: Yes
Mutation: Yes
 Organism_scientific: Streptomyces Lividans
Organism_taxid: 1916
Gene: Kcsa, Skc1
Expression_system: Escherichia Coli
Expression_system_taxid: 562
Expression_system_vector_type: Plasmid
Expression_system_plasmid: Pqe60
symmetry Space Group: C 1 2 1
R_factor 0.271 R_Free 0.302
crystal
cell
length a length b length c angle alpha angle beta angle gamma
130.970 76.630 112.970 90.00 125.83 90.00
method X-Ray Diffraction; Eprresolution 3.56 Å
ligand K, MTN, TBA enzyme
Gene
Ontology
ChainFunctionProcessComponent
A, D, C, B


Primary referenceElectron Spin-Echo Envelope Modulation (ESEEM) Reveals Water and Phosphate Interactions with the KcsA Potassium Channel (,)., Cieslak JA, Focia PJ, Gross A, Biochemistry. 2010 Feb 2. PMID:20092291
Data retrieval
  • Asymmetric unit, PDB entry: [header only] [complete with coordinates] (66 Kb) [Save to disk]
  • Biological Unit Coordinates (3ifx.pdb1.gz) 58 Kb
  • Biological Unit Coordinates (3ifx.pdb2.gz) 114 Kb
  • LPC: Ligand-Protein Contacts for 3IFX
  • CSU: Contacts of Structural Units for 3IFX
  • Structure Factors (160 Kb)
  • Retrieve 3IFX in mmCIF format [Save to disk]
  • SEQRES to COORDINATES correlation for 3IFX from S2C, [Save to disk]
  • Re-refined 3ifx structure from PDB_REDO, a databank with updated and optimised macromolecular X-ray diffraction structure models
    • View 3IFX 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 3IFX
  • 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 3IFX, from MSDmotif at EBI
    • Sequence-derived information
  • View one-letter amino acid or nucleotide sequence for each chain: [3ifx_D] [3ifx_A] [3ifx] [3ifx_C] [3ifx_B]
  • SWISS-PROT database:
  • Domain organization of by SWISSPFAM
    • Other resources with information on 3IFX
  • Community annotation for 3IFX 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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