2IH1

Ion selectivity in a semi-synthetic K+ channel locked in the conductive conformation


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.4 Å
  • R-Value Free: 0.251
  • R-Value Work: 0.233

Literature

Macromolecules
Sequence Display for 2IH1

Classification: MEMBRANE PROTEIN

Total Structure Weight: 60513.58

Macromolecule Entities
Molecule Chains Length Organism Details
FAB Heavy Chain A 219 Mus musculus
FAB Light Chain B 212 Mus musculus
Voltage-gated potassium channel C 122 Streptomyces lividans Mutation: S69A, V70C, G77X
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
1EM
Query on 1EM

C (1S)-2-HYDROXY-1-[(NONANOYLOXY)METHYL]ETHYL MYRISTATE
C26 H50 O5
IHUWMVGHYXVIRN-DEOSSOPVSA-N
Ligand Explorer NGL
 
Binding Pocket (JSmol)
 
Electron Density (JSmol)
K
Query on K

C POTASSIUM ION
K
NPYPAHLBTDXSSS-UHFFFAOYSA-N
Ligand Explorer NGL
 
Binding Pocket (JSmol)
 
Electron Density (JSmol)
Modified Residues 1 Unique
ID Chains Type Formula 2D Diagram Parent
DAL
Query on DAL
C D-PEPTIDE LINKING C3 H7 N O2 --

Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.4 Å
  • R-Value Free: 0.251
  • R-Value Work: 0.233
  • Space Group: I 4

Unit Cell:

Length (Å) Angle (°)
a = 156.39 α = 90.00
b = 156.39 β = 90.00
c = 75.67 γ = 90.00

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History

Deposition Data

  • Deposited Date: 2006-09-25
  • Released Date: 2006-11-21
  • Deposition author(s): Valiyaveetil, F.I., Leonetti, M., Muir, T.W., MacKinnon, R.

Revision History

  • 2008-05-01
    Type: Version format compliance
  • 2011-07-13
    Type: Derived calculations, Version format compliance
  • 2011-11-16
    Type: Atomic model