4BW5

Crystal structure of human two pore domain potassium ion channel TREK2 (K2P10.1)


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 3.2 Å
  • R-Value Free: 0.254 
  • R-Value Work: 0.237 

wwPDB Validation 3D Report Full Report


This is version 1.2 of the entry. See complete history

Literature

K2P Channel Gating Mechanisms Revealed by Structures of Trek-2 and a Complex with Prozac

Pike, A.C.W.Mackenzie, A.Mcclenaghan, C.Aryal, P.Dong, L.Quigley, A.Grieben, M.Goubin, S.Mukhopadhyay, S.Ruda, G.F.Clausen, M.V.Cao, L.Brennan, P.E.Burgess-Brown, N.A.Sansom, M.S.P.Tucker, S.J.Carpenter, E.P.

(2015) Science 347: 1256

  • DOI: 10.1126/science.1261512
  • Primary Citation of Related Structures:  

  • PubMed Abstract: 
  • TREK-2 (KCNK10/K2P10), a two-pore domain potassium (K2P) channel, is gated by multiple stimuli such as stretch, fatty acids, and pH and by several drugs. However, the mechanisms that control channel gating are unclear. Here we present crystal structu ...

    TREK-2 (KCNK10/K2P10), a two-pore domain potassium (K2P) channel, is gated by multiple stimuli such as stretch, fatty acids, and pH and by several drugs. However, the mechanisms that control channel gating are unclear. Here we present crystal structures of the human TREK-2 channel (up to 3.4 angstrom resolution) in two conformations and in complex with norfluoxetine, the active metabolite of fluoxetine (Prozac) and a state-dependent blocker of TREK channels. Norfluoxetine binds within intramembrane fenestrations found in only one of these two conformations. Channel activation by arachidonic acid and mechanical stretch involves conversion between these states through movement of the pore-lining helices. These results provide an explanation for TREK channel mechanosensitivity, regulation by diverse stimuli, and possible off-target effects of the serotonin reuptake inhibitor Prozac.


    Organizational Affiliation

    Structural Genomics Consortium, University of Oxford, Oxford OX3 7DQ, UK.




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
POTASSIUM CHANNEL SUBFAMILY K MEMBER 10
A, B, C, D
282Homo sapiensMutation(s): 0 
Gene Names: KCNK10 (TREK2)
Membrane protein
mpstruct
Group: 
TRANSMEMBRANE PROTEINS: ALPHA-HELICAL
Sub Group: 
Channels: Potassium, Sodium, & Proton Ion-Selective
Protein: 
Two-Pore Domain Potassium Channel K2P10.1 (TREK-2), up state
Find proteins for P57789 (Homo sapiens)
Go to Gene View: KCNK10
Go to UniProtKB:  P57789
Small Molecules
Ligands 3 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
K
Query on K

Download SDF File 
Download CCD File 
A, C
POTASSIUM ION
K
NPYPAHLBTDXSSS-UHFFFAOYSA-N
 Ligand Interaction
PC1
Query on PC1

Download SDF File 
Download CCD File 
A, B
1,2-DIACYL-SN-GLYCERO-3-PHOSPHOCHOLINE
3-SN-PHOSPHATIDYLCHOLINE
C44 H88 N O8 P
NRJAVPSFFCBXDT-HUESYALOSA-N
 Ligand Interaction
CD
Query on CD

Download SDF File 
Download CCD File 
A
CADMIUM ION
Cd
WLZRMCYVCSSEQC-UHFFFAOYSA-N
 Ligand Interaction
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 3.2 Å
  • R-Value Free: 0.254 
  • R-Value Work: 0.237 
  • Space Group: P 1 21 1
Unit Cell:
Length (Å)Angle (°)
a = 87.830α = 90.00
b = 96.960β = 92.58
c = 103.700γ = 90.00
Software Package:
Software NamePurpose
Aimlessdata scaling
BUSTERrefinement
PHASERphasing
XDSdata reduction

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History 

Revision History 

  • Version 1.0: 2013-07-31
    Type: Initial release
  • Version 1.1: 2015-03-18
    Type: Database references
  • Version 1.2: 2015-03-25
    Type: Database references