1KEF

PDZ1 of SAP90


Experimental Data Snapshot

  • Method: SOLUTION NMR
  • Conformers Calculated: 100 
  • Conformers Submitted: 
  • Selection Criteria: average structure from ensemble of 28 structures, chosen by energy and penalty function 

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This is version 1.2 of the entry. See complete history


Literature

The PDZ1 domain of SAP90. Characterization of structure and binding.

Piserchio, A.Pellegrini, M.Mehta, S.Blackman, S.M.Garcia, E.P.Marshall, J.Mierke, D.F.

(2002) J Biol Chem 277: 6967-6973

  • DOI: 10.1074/jbc.M109453200
  • Primary Citation of Related Structures:  
    1KEF

  • PubMed Abstract: 
  • The structural features of the PDZ1 domain of the synapse-associated protein SAP90 have been characterized by NMR. A comparison with the structures of the PDZ2 and PDZ3 domains of SAP90 illustrates significant differences, which may account for the u ...

    The structural features of the PDZ1 domain of the synapse-associated protein SAP90 have been characterized by NMR. A comparison with the structures of the PDZ2 and PDZ3 domains of SAP90 illustrates significant differences, which may account for the unique binding properties of these homologous domains. Within the postsynaptic density, SAP90 functions as a molecular scaffold with a number of the protein-protein interactions mediated through the PDZ1 domain. Here, using fluorescence anisotropy and NMR chemical shift analysis, we have characterized the association of PDZ1 to the C-terminal peptides of the GluR6 subunit of the kainate receptor, voltage-gated K(+) channel Kv1.4, and microtubule-associate protein CRIPT, all of which are known to associate with SAP90. The latter two, which possess the consensus sequence for binding to PDZ domains (T/S-X-V-oh), have low micromolar binding affinities (1.5-15 microm). The C terminus of GluR6, RLPGKETMA-oh, lacking the consensus sequence, binds to PDZ1 of SAP90 with an affinity of 160 microm. The NMR data illustrate that although all three peptides occupy the binding groove capped by the GLGF loop of PDZ1, specific differences are present, consistent with the variation in binding affinities.


    Organizational Affiliation

    Department of Chemistry, Division of Biology and Medicine, Brown University, Providence, RI 02912, USA.



Macromolecules
Find similar proteins by:  (by identity cutoff)  |  Structure
Entity ID: 1
MoleculeChainsSequence LengthOrganismDetailsImage
synapse associated protein-90A93Homo sapiensMutation(s): 0 
Gene Names: DLG4PSD95
Find proteins for P78352 (Homo sapiens)
Explore P78352 
Go to UniProtKB:  P78352
NIH Common Fund Data Resources
PHAROS  P78352
Protein Feature View
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  • Reference Sequence
Experimental Data & Validation

Experimental Data

  • Method: SOLUTION NMR
  • Conformers Calculated: 100 
  • Conformers Submitted: 
  • Selection Criteria: average structure from ensemble of 28 structures, chosen by energy and penalty function 
  • OLDERADO: 1KEF Olderado

Structure Validation

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Entry History 

Deposition Data

Revision History 

  • Version 1.0: 2002-03-06
    Type: Initial release
  • Version 1.1: 2008-04-27
    Changes: Version format compliance
  • Version 1.2: 2011-07-13
    Changes: Version format compliance