3UAT

Guanylate Kinase Domains of the MAGUK Family Scaffold Proteins as Specific Phospho-Protein Binding Modules


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.7 Å
  • R-Value Free: 0.241 
  • R-Value Work: 0.187 

wwPDB Validation 3D Report Full Report


This is version 1.0 of the entry. See complete history

Literature

Guanylate kinase domains of the MAGUK family scaffold proteins as specific phospho-protein-binding modules

Zhu, J.Shang, Y.Xia, C.Wang, W.Wen, W.Zhang, M.

(2011) Embo J. --: --

  • DOI: 10.1038/emboj.2011.428

  • PubMed Abstract: 
  • Membrane-associated guanylate kinases (MAGUKs) are a large family of scaffold proteins that play essential roles in tissue developments, cell-cell communications, cell polarity control, and cellular signal transductions. Despite extensive studies ove ...

    Membrane-associated guanylate kinases (MAGUKs) are a large family of scaffold proteins that play essential roles in tissue developments, cell-cell communications, cell polarity control, and cellular signal transductions. Despite extensive studies over the past two decades, the functions of the signature guanylate kinase domain (GK) of MAGUKs are poorly understood. Here we show that the GK domain of DLG1/SAP97 binds to asymmetric cell division regulatory protein LGN in a phosphorylation-dependent manner. The structure of the DLG1 SH3-GK tandem in complex with a phospho-LGN peptide reveals that the GMP-binding site of GK has evolved into a specific pSer/pThr-binding pocket. Residues both N- and C-terminal to the pSer are also critical for the specific binding of the phospho-LGN peptide to GK. We further demonstrate that the previously reported GK domain-mediated interactions of DLGs with other targets, such as GKAP/DLGAP1/SAPAP1 and SPAR, are also phosphorylation dependent. Finally, we provide evidence that other MAGUK GKs also function as phospho-peptide-binding modules. The discovery of the phosphorylation-dependent MAGUK GK/target interactions indicates that MAGUK scaffold-mediated signalling complex organizations are dynamically regulated.


    Organizational Affiliation

    Department of Chemistry, and Institutes of Biomedical Sciences, Fudan University, Shanghai, PR China.




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
Disks large homolog 1
A
296Rattus norvegicusGene Names: Dlg1 (Dlgh1)
Find proteins for Q62696 (Rattus norvegicus)
Go to UniProtKB:  Q62696
Entity ID: 2
MoleculeChainsSequence LengthOrganismDetails
phosphor-LGN peptide
B
18Rattus norvegicusGene Names: Gpsm2
Find proteins for D3ZCE5 (Rattus norvegicus)
Go to UniProtKB:  D3ZCE5
Small Molecules
Modified Residues  1 Unique
IDChainsTypeFormula2D DiagramParent
SEP
Query on SEP
B
L-PEPTIDE LINKINGC3 H8 N O6 PSER
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.7 Å
  • R-Value Free: 0.241 
  • R-Value Work: 0.187 
  • Space Group: P 1 21 1
Unit Cell:
Length (Å)Angle (°)
a = 47.566α = 90.00
b = 66.155β = 102.44
c = 55.155γ = 90.00
Software Package:
Software NamePurpose
PHASESphasing
HKL-2000data scaling
PHENIXrefinement
HKL-2000data reduction
HKL-2000data collection

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History 

Deposition Data

Revision History 

  • Version 1.0: 2011-12-07
    Type: Initial release