1KJW

SH3-Guanylate Kinase Module from PSD-95

Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.80 Å
  • R-Value Free: 0.250 
  • R-Value Work: 0.230 

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This is version 1.3 of the entry. See complete history. 


Literature

Structure of the SH3-Guanylate Kinase Module from PSD-95 Suggests a Mechanism for Regulated Assembly of MAGUK Scaffolding Proteins

McGee, A.W., Dakoji, S.R., Olsen, O., Bredt, D.S., Lim, W.A., Prehoda, K.E.

(2001) Mol Cell 8: 1291-1301

  • DOI: 10.1016/s1097-2765(01)00411-7
  • Primary Citation of Related Structures:  
    1KJW

  • PubMed Abstract: 

    • Membrane-associated guanylate kinases (MAGUKs), such as PSD-95, are modular scaffolds that organize signaling complexes at synapses and other cell junctions. MAGUKs contain PDZ domains, which recruit signaling proteins, as well as a Src homology 3 (SH3) and a guanylate kinase-like (GK) domain, implicated in scaffold oligomerization ...

    Membrane-associated guanylate kinases (MAGUKs), such as PSD-95, are modular scaffolds that organize signaling complexes at synapses and other cell junctions. MAGUKs contain PDZ domains, which recruit signaling proteins, as well as a Src homology 3 (SH3) and a guanylate kinase-like (GK) domain, implicated in scaffold oligomerization. The crystal structure of the SH3-GK module from PSD-95 reveals that these domains form an integrated unit: the SH3 fold comprises noncontiguous sequence elements divided by a hinge region and the GK domain. These elements compose two subdomains that can assemble in either an intra- or intermolecular fashion to complete the SH3 fold. We propose a model for MAGUK oligomerization in which complementary SH3 subdomains associate by 3D domain swapping. This model provides a possible mechanism for ligand regulation of oligomerization.

    Organizational Affiliation: 

    Department of Physiology, University of California-San Francisco, San Francisco, CA 94143, USA.



Macromolecules
Find similar proteins by: 
(by identity cutoff)  |  Structure
Entity ID: 1
MoleculeChainsSequence LengthOrganismDetailsImage
POSTSYNAPTIC DENSITY PROTEIN 95A295Rattus norvegicusMutation(s): 0 
Gene Names: Dlg4, Dlgh4, Psd95
Find proteins for P31016 (Rattus norvegicus)
Explore P31016 
Go to UniProtKB:  P31016
Protein Feature View
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  • Reference Sequence
Small Molecules
Ligands 1 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
SO4
Query on SO4
Download Ideal Coordinates CCD File 
 B [auth A], C [auth A]SULFATE ION
O4 S
QAOWNCQODCNURD-UHFFFAOYSA-L		 Ligand Interaction
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.80 Å
  • R-Value Free: 0.250 
  • R-Value Work: 0.230 
  • Space Group: P 41 21 2
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 60.509α = 90
b = 60.509β = 90
c = 209.956γ = 90
Software Package:
Software NamePurpose
HKL-2000data collection
SCALEPACKdata scaling
SHARPphasing
CNSrefinement
HKL-2000data reduction

Structure Validation

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Entry History 

Deposition Data

Revision History  (Full details and data files)

  • Version 1.0: 2002-01-09
    Type: Initial release
  • Version 1.1: 2008-04-27
    Changes: Version format compliance
  • Version 1.2: 2011-07-13
    Changes: Version format compliance
  • Version 1.3: 2018-01-31
    Changes: Experimental preparation