1G9O

FIRST PDZ DOMAIN OF THE HUMAN NA+/H+ EXCHANGER REGULATORY FACTOR


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.5 Å
  • R-Value Free: 0.201 
  • R-Value Work: 0.181 

wwPDB Validation 3D Report Full Report


This is version 1.2 of the entry. See complete history

Literature

Crystal structure of the PDZ1 domain of human Na(+)/H(+) exchanger regulatory factor provides insights into the mechanism of carboxyl-terminal leucine recognition by class I PDZ domains.

Karthikeyan, S.Leung, T.Birrane, G.Webster, G.Ladias, J.A.

(2001) J.Mol.Biol. 308: 963-973

  • DOI: 10.1006/jmbi.2001.4634
  • Also Cited By: 1GQ5, 1GQ4

  • PubMed Abstract: 
  • The Na(+)/H(+) exchanger regulatory factor (NHERF; also known as EBP50) contains two PDZ domains that mediate the assembly of transmembrane and cytosolic proteins into functional signal transduction complexes. The NHERF PDZ1 domain interacts specific ...

    The Na(+)/H(+) exchanger regulatory factor (NHERF; also known as EBP50) contains two PDZ domains that mediate the assembly of transmembrane and cytosolic proteins into functional signal transduction complexes. The NHERF PDZ1 domain interacts specifically with the motifs DSLL, DSFL, and DTRL present at the carboxyl termini of the beta(2) adrenergic receptor (beta(2)AR), the platelet-derived growth factor receptor (PDGFR), and the cystic fibrosis transmembrane conductance regulator (CFTR), respectively, and plays a central role in the physiological regulation of these proteins. The crystal structure of the human NHERF PDZ1 has been determined at 1.5 A resolution using multiwavelength anomalous diffraction phasing. The overall structure is similar to known PDZ structures, with notable differences in the NHERF PDZ1 carboxylate-binding loop that contains the GYGF motif, and the variable loop between the beta2 and beta3 strands. In the crystalline state, the carboxyl-terminal sequence DEQL of PDZ1 occupies the peptide-binding pocket of a neighboring PDZ1 molecule related by 2-fold crystallographic symmetry. This structure reveals the molecular mechanism of carboxyl-terminal leucine recognition by class I PDZ domains, and provides insights into the specificity of NHERF interaction with the carboxyl termini of several membrane receptors and ion channels, including the beta(2)AR, PDGFR, and CFTR.


    Related Citations: 
    • NHE-RF, a regulatory cofactor for Na(+)-H+ exchange, is a common interactor for merlin and ERM (MERM) proteins;
      MURTHY, A.,GONZALEZ-AGOSTI, C.,CORDERO, E.,PINNEY, D.,CANDIA, C.,SOLOMON, F.,GUSELLA, J.,RAMESH, V.
      (1998) J.Biol.Chem. 273: 1273
    • Crystal structure of the hCASK PDZ domain reveals the structural basis of class II PDZ domain target recognition
      Daniels, D.L.,Cohen, A.R.,Anderson, J.M.,Brunger, A.T.
      (1998) Nat.Struct.Mol.Biol. 5: 317
    • Crystal structures of a complexed and peptide-free membrane protein-binding domain:Molecular basis of peptide recognition by PDZ
      Doyle, D.A.,Lee, A.,Lewis, J.,Kim, E.,Sheng, M.,MacKinnon, R.
      (1996) Cell 85: 1067
    • Crystal structure of a PDZ domain
      Morais Cabral, J.H.,Petosa, C.,Sutcliffe, M.J.,Raza, S.,Byron, O.,Poy, F.,Marfatia, S.M.,Chishti, A.H.,Liddington, R.C.
      (1996) Nature 382: 649


    Organizational Affiliation

    Molecular Medicine Laboratory and Macromolecular Crystallography Unit, Division of Experimental Medicine, Beth Israel Deaconess Medical Center, Boston, MA 02115, USA.




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
NHE-RF
A
91Homo sapiensMutation(s): 0 
Gene Names: SLC9A3R1 (NHERF, NHERF1)
Find proteins for O14745 (Homo sapiens)
Go to Gene View: SLC9A3R1
Go to UniProtKB:  O14745
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.5 Å
  • R-Value Free: 0.201 
  • R-Value Work: 0.181 
  • Space Group: P 32 2 1
Unit Cell:
Length (Å)Angle (°)
a = 51.568α = 90.00
b = 51.568β = 90.00
c = 58.947γ = 120.00
Software Package:
Software NamePurpose
SCALEPACKdata scaling
DENZOdata reduction
SOLVEphasing
CNSrefinement

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History 

Deposition Data

Revision History 

  • Version 1.0: 2001-05-23
    Type: Initial release
  • Version 1.1: 2008-04-27
    Type: Version format compliance
  • Version 1.2: 2011-07-13
    Type: Version format compliance