3FB5

KcsA potassium channel in the partially open state with 14.5 A opening at T112


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.8 Å
  • R-Value Free: 0.252
  • R-Value Work: 0.243

Literature

Macromolecules
Sequence Display for 3FB5

Classification: membrane protein / metal transport

Total Structure Weight: 58009.14

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
Voltage-gated potassium channel C 104 Streptomyces lividans Fragment: UNP residues 21-124
Mutation: H25Q, L90C, R117Q, E120Q, R121Q, R122Q, H124Q
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 1 Unique
ID Chains Name / Formula / InChI Key 2D Diagram 3D Interactions
K
Query on K

C 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: 0.252
  • R-Value Work: 0.243
  • Space Group: I 4

Unit Cell:

Length (Å) Angle (°)
a = 157.48 α = 90.00
b = 157.48 β = 90.00
c = 74.76 γ = 90.00

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History

Deposition Data

  • Deposited Date: 2008-11-18
  • Released Date: 2010-05-19
  • Deposition author(s): Cuello, L.G., Jogini, V., Cortes, D.M., Perozo, E.

Revision History

  • 2011-07-13
    Type: Version format compliance