1J95

KCSA potassium channel with TBA (tetrabutylammonium) and potassium

Structural Biology Knowledgebase: 1J95 SBKB.org


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.8 Å
  • R-Value Free: 0.322
  • R-Value Work: 0.298

Literature

Macromolecules
Sequence Display for 1J95

Classification: MEMBRANE PROTEIN

Total Structure Weight: 53938.51

Macromolecule Entities
Molecule Chains Length Organism Details
VOLTAGE-GATED POTASSIUM CHANNEL A, B, C, D 125 Streptomyces lividans Fragment: Residues 1-125
Mutation: L90C
Gene Name(s): kcsA skc1
Metabolic Pathways
Maps:       
Reactions:
ESCHER  BiGG

Membrane Protein

Source: inferred by homology | Group: ALPHA-HELICAL

Subgroup Name: Channels: Potassium, Sodium, & Proton Ion-Selective

Protein Name: KcsA Potassium channel, H+ gated


Small Molecules
Ligands 2 Unique
ID Chains Name / Formula / InChI Key 2D Diagram 3D Interactions
TBA
Query on TBA

A TETRABUTYLAMMONIUM ION
C16 H36 N
DZLFLBLQUQXARW-UHFFFAOYSA-N
Ligand Explorer NGL
 
Binding Pocket (JSmol)
 
Electron Density (JSmol)
K
Query on K

A, B POTASSIUM ION
K
NPYPAHLBTDXSSS-UHFFFAOYSA-N
Ligand Explorer NGL
 
Binding Pocket (JSmol)
 
Electron Density (JSmol)

Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.8 Å
  • R-Value Free: 0.322
  • R-Value Work: 0.298
  • Space Group: C 1 2 1
  • Electron Density Server: EDS EDS

Unit Cell:

Length (Å) Angle (°)
a = 128.90 α = 90.00
b = 67.40 β = 125.30
c = 112.00 γ = 90.00

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History

Deposition Data

  • Deposited Date: 2001-05-23
  • Released Date: 2001-06-13
  • Deposition author(s): Morais-Cabral, J.H., MacKinnon, R., Zhou, M.

Revision History

  • 2011-07-13
    Type: Version format compliance | Details: compliance with PDB Exchange Dictionary V4