2PKU

Solution structure of PICK1 PDZ in complex with the carboxyl tail peptide of GluR2


Experimental Data Snapshot

  • Method: SOLUTION NMR
  • Conformers Calculated: 200 
  • Conformers Submitted: 20 
  • Selection Criteria: structures with the lowest energy 

wwPDB Validation 3D Report Full Report


This is version 1.1 of the entry. See complete history

Literature

Clustering and synaptic targeting of PICK1 requires direct interaction between the PDZ domain and lipid membranes

Pan, L.Wu, H.Shen, C.Shi, Y.Jin, W.Xia, J.Zhang, M.

(2007) Embo J. 26: 4576-4587

  • DOI: 10.1038/sj.emboj.7601860

  • PubMed Abstract: 
  • Protein interacting with c kinase 1 (PICK1) regulates the trafficking of receptors and ion-channels such as AMPA receptors. Traditionally, the PICK1 PDZ domain is regarded as an adaptor capable of binding to receptors trafficked by PICK1, and the lip ...

    Protein interacting with c kinase 1 (PICK1) regulates the trafficking of receptors and ion-channels such as AMPA receptors. Traditionally, the PICK1 PDZ domain is regarded as an adaptor capable of binding to receptors trafficked by PICK1, and the lipid-binding BAR domain functions to tether PICK1 directly to membranes. Here, we show that the PICK1 PDZ domain can directly interact with lipid membranes. The PDZ domain and lipid membrane interaction is mediated by both a polybasic amino-acid cluster and a conserved 'Cys-Pro-Cys' motif located away from the peptide ligand-binding groove. Disruption of the PDZ and lipid membrane interaction totally abolished synaptic targeting of PICK1. Although mutation of the CPC motif did not affect the interaction between PICK1 and AMPA receptors, the mutant PICK1 was unable to cluster the GluR2 subunit of the receptor. In neurons, PICK1 containing the same mutation displayed dramatically compromised capacity in the trafficking of AMPA receptors. Taken together, our findings not only uncovered the novel lipid membrane-binding property of the PICK1 PDZ domain, but also provided direct evidence supporting the functional relevance of the PDZ-lipid interaction.


    Organizational Affiliation

    Department of Biochemistry, Molecular Neuroscience Center, Hong Kong University of Science and Technology, Kowloon, Hong Kong, PR China.




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
PRKCA-binding protein
A
87Rattus norvegicusMutation(s): 0 
Gene Names: Pick1 (Prkcabp)
Find proteins for Q9EP80 (Rattus norvegicus)
Go to UniProtKB:  Q9EP80
Entity ID: 2
MoleculeChainsSequence LengthOrganismDetails
peptide (GLU)(SER)(VAL)(LYS)(ILE)
B
5N/AMutation(s): 0 
Protein Feature View is not available: No corresponding UniProt sequence found.
Experimental Data & Validation

Experimental Data

  • Method: SOLUTION NMR
  • Conformers Calculated: 200 
  • Conformers Submitted: 20 
  • Selection Criteria: structures with the lowest energy 
  • Olderado: 2PKU Olderado

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: Version format compliance