1G9O

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


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.50 Å
  • R-Value Free: 0.201 
  • R-Value Work: 0.181 
  • R-Value Observed: 0.186 

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
  • Structures With Same Primary Citation

  • 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 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-RFA91Homo sapiensMutation(s): 0 
Gene Names: NHERFSLC9A3R1NHERF1
Find proteins for O14745 (Homo sapiens)
Explore O14745 
Go to UniProtKB:  O14745
NIH Common Fund Data Resources
PHAROS  O14745
Protein Feature View
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  • Reference Sequence
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.50 Å
  • R-Value Free: 0.201 
  • R-Value Work: 0.181 
  • R-Value Observed: 0.186 
  • Space Group: P 32 2 1
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 51.568α = 90
b = 51.568β = 90
c = 58.947γ = 120
Software Package:
Software NamePurpose
SOLVEphasing
CNSrefinement
DENZOdata reduction
SCALEPACKdata scaling

Structure Validation

View Full Validation Report



Entry History 

Deposition Data

Revision History 

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