1K4C

Potassium Channel KcsA-Fab complex in high concentration of K+

Structural Biology Knowledgebase: 1K4C SBKB.org


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.0 Å
  • R-Value Free: 0.233
  • R-Value Work: 0.218

wwPDB Validation Full Report


Literature

Macromolecules
Sequence Display for 1K4C

Classification: MEMBRANE PROTEIN

Total Structure Weight: 61101.99

Macromolecule Entities
Molecule Chains Length Organism Details
antibody Fab fragment heavy chain A 219 Mus musculus
antibody Fab fragment light chain B 212 Mus musculus
potassium channel KcsA C 124 Streptomyces lividans Fragment: potassium channel KcsA
Mutation: P2A, L90C
Gene Name(s): kcsA skc1
Metabolic Pathways
Maps:       
Reactions:
ESCHER  BiGG

Membrane Protein

Source: mpstruc | 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
 
Binding Pocket (JSmol)
 
Electron Density (JSmol)
F09
Query on F09

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

C POTASSIUM ION
K
NPYPAHLBTDXSSS-UHFFFAOYSA-N
Ligand Explorer
 
Binding Pocket (JSmol)
 
Electron Density (JSmol)

Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.0 Å
  • R-Value Free: 0.233
  • R-Value Work: 0.218
  • Space Group: I 4
  • Electron Density Server: EDS EDS

Unit Cell:

Length (Å) Angle (°)
a = 155.33 α = 90.00
b = 155.33 β = 90.00
c = 76.27 γ = 90.00

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History

Deposition Data

  • Deposited Date: 2001-10-07
  • Released Date: 2001-11-14
  • Deposition author(s): Zhou, Y., Morais-Cabral, J.H., Kaufman, A., MacKinnon, R.

Revision History

  • 2011-11-16
    Type: Atom occupancy | Details: Atom occupancy
  • 2011-07-13
    Type: Version format compliance | Details: compliance with PDB Exchange Dictionary V4