2R9R

Shaker family voltage dependent potassium channel (kv1.2-kv2.1 paddle chimera channel) in association with beta subunit


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.4 Å
  • R-Value Free: 0.244 
  • R-Value Work: 0.212 

wwPDB Validation 3D Report Full Report


This is version 1.1 of the entry. See complete history

Literature

Atomic structure of a voltage-dependent K+ channel in a lipid membrane-like environment.

Long, S.B.Tao, X.Campbell, E.B.MacKinnon, R.

(2007) Nature 450: 376-382

  • DOI: 10.1038/nature06265
  • Also Cited By: 3LUT

  • PubMed Abstract: 
  • Voltage-dependent K+ (Kv) channels repolarize the action potential in neurons and muscle. This type of channel is gated directly by membrane voltage through protein domains known as voltage sensors, which are molecular voltmeters that read the membra ...

    Voltage-dependent K+ (Kv) channels repolarize the action potential in neurons and muscle. This type of channel is gated directly by membrane voltage through protein domains known as voltage sensors, which are molecular voltmeters that read the membrane voltage and regulate the pore. Here we describe the structure of a chimaeric voltage-dependent K+ channel, which we call the 'paddle-chimaera channel', in which the voltage-sensor paddle has been transferred from Kv2.1 to Kv1.2. Crystallized in complex with lipids, the complete structure at 2.4 ångström resolution reveals the pore and voltage sensors embedded in a membrane-like arrangement of lipid molecules. The detailed structure, which can be compared directly to a large body of functional data, explains charge stabilization within the membrane and suggests a mechanism for voltage-sensor movements and pore gating.


    Related Citations: 
    • Crystal Structure of a Mammalian Voltage-Dependent Shaker Family K+ Channel
      Long, S.B.,Campbell, E.B.,Mackinnon, R.
      (2005) Science 309: 897


    Organizational Affiliation

    Howard Hughes Medical Institute, Laboratory of Molecular Neurobiology and Biophysics, Rockefeller University, 1230 York Avenue, New York, New York 10065, USA.




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
Voltage-gated potassium channel subunit beta-2
A, G
333Rattus norvegicusMutation(s): 0 
Gene Names: Kcnab2 (Ckbeta2, Kcnb3)
EC: 1.1.1.-
Membrane protein
mpstruct
Group: 
TRANSMEMBRANE PROTEINS: ALPHA-HELICAL
Sub Group: 
Channels: Potassium, Sodium, & Proton Ion-Selective
Protein: 
Kv1.2/Kv2.1 Voltage-gated potassium channel chimera
Find proteins for P62483 (Rattus norvegicus)
Go to UniProtKB:  P62483
Entity ID: 2
MoleculeChainsSequence LengthOrganismDetails
Paddle chimera voltage gated potassium channel Kv1.2-Kv2.1
B, H
514N/AMutation(s): 0 
Protein Feature View is not available: No corresponding UniProt sequence found.
Small Molecules
Ligands 3 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
K
Query on K

Download SDF File 
Download CCD File 
B, H
POTASSIUM ION
K
NPYPAHLBTDXSSS-UHFFFAOYSA-N
 Ligand Interaction
NAP
Query on NAP

Download SDF File 
Download CCD File 
A, G
NADP NICOTINAMIDE-ADENINE-DINUCLEOTIDE PHOSPHATE
2'-MONOPHOSPHOADENOSINE 5'-DIPHOSPHORIBOSE
C21 H28 N7 O17 P3
XJLXINKUBYWONI-NNYOXOHSSA-N
 Ligand Interaction
PGW
Query on PGW

Download SDF File 
Download CCD File 
B, H
(1R)-2-{[(S)-{[(2S)-2,3-dihydroxypropyl]oxy}(hydroxy)phosphoryl]oxy}-1-[(hexadecanoyloxy)methyl]ethyl (9Z)-octadec-9-enoate
1-Palmitoyl-2-Oleoyl-sn-Glycero-3-[Phospho-(1-glycerol)]; PHOSPHATIDYLGLYCEROL
C40 H77 O10 P
PAZGBAOHGQRCBP-HGWHEPCSSA-N
 Ligand Interaction
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.4 Å
  • R-Value Free: 0.244 
  • R-Value Work: 0.212 
  • Space Group: P 4 21 2
Unit Cell:
Length (Å)Angle (°)
a = 144.049α = 90.00
b = 144.049β = 90.00
c = 284.397γ = 90.00
Software Package:
Software NamePurpose
SCALEPACKdata scaling
CNSrefinement
MOLREPphasing
DENZOdata reduction
ADSCdata collection

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History 

Deposition Data

Revision History 

  • Version 1.0: 2007-11-20
    Type: Initial release
  • Version 1.1: 2011-07-13
    Type: Derived calculations, Version format compliance