1R3L

potassium channel KcsA-Fab complex in Cs+


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.41 Å
  • R-Value Free: 0.249
  • R-Value Work: 0.219

Literature

Macromolecules
Sequence Display for 1R3L

Classification: MEMBRANE PROTEIN

Total Structure Weight: 61492.36

Macromolecule Entities
Molecule Chains Length Organism Details
Antibody Fab fragment light chain A 212 Mus musculus Gene Name(s):
Metabolic Pathways
Maps:       
Reactions:
ESCHER  BiGG
Antibody Fab fragment heavy chain B 219 Mus musculus Gene Name(s): Ighg1 Igh-4
Metabolic Pathways
Maps:       
Reactions:
ESCHER  BiGG
Voltage-gated potassium channel C 124 Streptomyces lividans Mutation: P2A, 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 3 Unique
ID Chains Name / Formula / InChI Key 2D Diagram 3D Interactions
DGA
Query on DGA

C DIACYL GLYCEROL
C39 H76 O5
UHUSDOQQWJGJQS-QNGWXLTQSA-N
Ligand Explorer NGL
 
Binding Pocket (JSmol)
 
Electron Density (JSmol)
F09
Query on F09

B NONAN-1-OL
C9 H20 O
ZWRUINPWMLAQRD-UHFFFAOYSA-N
Ligand Explorer NGL
 
Binding Pocket (JSmol)
 
Electron Density (JSmol)
CS
Query on CS

C CESIUM ION
Cs
NCMHKCKGHRPLCM-UHFFFAOYSA-N
Ligand Explorer NGL
 
Binding Pocket (JSmol)
 
Electron Density (JSmol)

Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.41 Å
  • R-Value Free: 0.249
  • R-Value Work: 0.219
  • Space Group: I 4

Unit Cell:

Length (Å) Angle (°)
a = 154.91 α = 90.00
b = 154.91 β = 90.00
c = 75.49 γ = 90.00

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History

Deposition Data

  • Deposited Date: 2003-10-02
  • Released Date: 2003-11-25
  • Deposition author(s): Zhou, Y., MacKinnon, R.

Revision History

  • 2008-04-29
    Type: Version format compliance
  • 2011-07-13
    Type: Version format compliance
  • 2011-11-16
    Type: Atomic model