2M0T

Structural characterization of the extended PDZ1 domain from NHERF1


Experimental Data Snapshot

  • Method: SOLUTION NMR
  • Conformers Calculated: 1000 
  • Conformers Submitted: 20 
  • Selection Criteria: structures with the lowest energy 

wwPDB Validation   3D Report Full Report


This is version 1.3 of the entry. See complete history


Literature

Ligand-Induced Dynamic Changes in Extended PDZ Domains from NHERF1.

Bhattacharya, S.Ju, J.H.Orlova, N.Khajeh, J.A.Cowburn, D.Bu, Z.

(2013) J Mol Biol 425: 2509-2528

  • DOI: 10.1016/j.jmb.2013.04.001
  • Primary Citation of Related Structures:  
    2M0T, 2M0V, 2M0U

  • PubMed Abstract: 
  • The multi-domain scaffolding protein NHERF1 modulates the assembly and intracellular trafficking of various transmembrane receptors and ion-transport proteins. The two PDZ (postsynaptic density 95/disk large/zonula occluden 1) domains of NHERF1 posse ...

    The multi-domain scaffolding protein NHERF1 modulates the assembly and intracellular trafficking of various transmembrane receptors and ion-transport proteins. The two PDZ (postsynaptic density 95/disk large/zonula occluden 1) domains of NHERF1 possess very different ligand-binding capabilities: PDZ1 recognizes a variety of membrane proteins with high affinity, while PDZ2 only binds limited number of target proteins. Here using NMR, we have determined the structural and dynamic mechanisms that differentiate the binding affinities of the two PDZ domains, for the type 1 PDZ-binding motif (QDTRL) in the carboxyl terminus of cystic fibrosis transmembrane regulator. Similar to PDZ2, we have identified a helix-loop-helix subdomain coupled to the canonical PDZ1 domain. The extended PDZ1 domain is highly flexible with correlated backbone motions on fast and slow timescales, while the extended PDZ2 domain is relatively rigid. The malleability of the extended PDZ1 structure facilitates the transmission of conformational changes at the ligand-binding site to the remote helix-loop-helix extension. By contrast, ligand binding has only modest effects on the conformation and dynamics of the extended PDZ2 domain. The study shows that ligand-induced structural and dynamic changes coupled with sequence variation at the putative PDZ binding site dictate ligand selectivity and binding affinity of the two PDZ domains of NHERF1.


    Organizational Affiliation

    New York Structural Biology Center, 89 Convent Avenue, New York, NY 10027, USA.



Macromolecules
Find similar proteins by:  (by identity cutoff)  |  Structure
Entity ID: 1
MoleculeChainsSequence LengthOrganismDetailsImage
Na(+)/H(+) exchange regulatory cofactor NHE-RF1A117Homo sapiensMutation(s): 0 
Gene Names: SLC9A3R1NHERFNHERF1
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: SOLUTION NMR
  • Conformers Calculated: 1000 
  • Conformers Submitted: 20 
  • Selection Criteria: structures with the lowest energy 
  • OLDERADO: 2M0T Olderado

Structure Validation

View Full Validation Report



Entry History 

Deposition Data

Revision History 

  • Version 1.0: 2013-04-24
    Type: Initial release
  • Version 1.1: 2013-05-01
    Changes: Database references
  • Version 1.2: 2013-06-26
    Changes: Database references
  • Version 1.3: 2013-07-17
    Changes: Database references