5IZU

A new binding site outside the canonical PDZ domain determines the specific interaction between Shank and SAPAP and their function


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.494 Å
  • R-Value Free: 0.251 
  • R-Value Work: 0.183 

wwPDB Validation 3D Report Full Report


This is version 1.3 of the entry. See complete history

Literature

A binding site outside the canonical PDZ domain determines the specific interaction between Shank and SAPAP and their function

Zeng, M.Shang, Y.Guo, T.He, Q.Yung, W.H.Liu, K.Zhang, M.

(2016) Proc.Natl.Acad.Sci.USA 113: E3081-E3090

  • DOI: 10.1073/pnas.1523265113

  • PubMed Abstract: 
  • Shank and SAPAP (synapse-associated protein 90/postsynaptic density-95-associated protein) are two highly abundant scaffold proteins that directly interact with each other to regulate excitatory synapse development and plasticity. Mutations of SAPAP, ...

    Shank and SAPAP (synapse-associated protein 90/postsynaptic density-95-associated protein) are two highly abundant scaffold proteins that directly interact with each other to regulate excitatory synapse development and plasticity. Mutations of SAPAP, but not other reported Shank PDZ domain binders, share a significant overlap on behavioral abnormalities with the mutations of Shank both in patients and in animal models. The molecular mechanism governing the exquisite specificity of the Shank/SAPAP interaction is not clear, however. Here we report that a sequence preceding the canonical PDZ domain of Shank, together with the elongated PDZ BC loop, form another binding site for a sequence upstream of the SAPAP PDZ-binding motif, leading to a several hundred-fold increase in the affinity of the Shank/SAPAP interaction. We provide evidence that the specific interaction afforded by this newly identified site is required for Shank synaptic targeting and the Shank-induced synaptic activity increase. Our study provides a molecular explanation of how Shank and SAPAP dosage changes due to their gene copy number variations can contribute to different psychiatric disorders.


    Organizational Affiliation

    Division of Life Science, State Key Laboratory of Molecular Neuroscience, Hong Kong University of Science and Technology, Hong Kong, China;




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
SH3 and multiple ankyrin repeat domains protein 3
A, C
139Mus musculusMutation(s): 0 
Gene Names: Shank3 (Kiaa1650, Prosap2)
Find proteins for Q4ACU6 (Mus musculus)
Go to UniProtKB:  Q4ACU6
Entity ID: 2
MoleculeChainsSequence LengthOrganismDetails
peptide from Disks large-associated protein 3
B, D
15Mus musculusMutation(s): 0 
Gene Names: Dlgap3 (Dap3)
Find proteins for Q6PFD5 (Mus musculus)
Go to UniProtKB:  Q6PFD5
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.494 Å
  • R-Value Free: 0.251 
  • R-Value Work: 0.183 
  • Space Group: P 31 1 2
Unit Cell:
Length (Å)Angle (°)
a = 72.824α = 90.00
b = 72.824β = 90.00
c = 116.360γ = 120.00
Software Package:
Software NamePurpose
HKL-2000data scaling
HKL-2000data reduction
PHENIXrefinement
PHASERphasing

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History & Funding Information

Deposition Data


Funding OrganizationLocationGrant Number
Research Grants CouncilHong Kong663811
Research Grants CouncilHong Kong663812
Research Grants CouncilHong KongT13-607/12R
Research Grants CouncilHong KongAoE-M09-12
Ministry of Science and Technology of the People's Republic of China (Chinese Ministry of Science and Technology)China2014CB910204

Revision History 

  • Version 1.0: 2016-05-18
    Type: Initial release
  • Version 1.1: 2016-06-01
    Type: Database references
  • Version 1.2: 2016-06-15
    Type: Database references
  • Version 1.3: 2016-08-24
    Type: Source and taxonomy