5G4X

The crystal structure of the SHANK3 N-terminus


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.17 Å
  • R-Value Free: 0.186 
  • R-Value Work: 0.163 
  • R-Value Observed: 0.164 

wwPDB Validation   3D Report Full Report


This is version 1.2 of the entry. See complete history


Literature

SHANK proteins limit integrin activation by directly interacting with Rap1 and R-Ras.

Lilja, J.Zacharchenko, T.Georgiadou, M.Jacquemet, G.Franceschi, N.Peuhu, E.Hamidi, H.Pouwels, J.Martens, V.Nia, F.H.Beifuss, M.Boeckers, T.Kreienkamp, H.J.Barsukov, I.L.Ivaska, J.

(2017) Nat Cell Biol 19: 292-305

  • DOI: 10.1038/ncb3487
  • Primary Citation of Related Structures:  
    5G4X

  • PubMed Abstract: 
  • SHANK3, a synaptic scaffold protein and actin regulator, is widely expressed outside of the central nervous system with predominantly unknown function. Solving the structure of the SHANK3 N-terminal region revealed that the SPN domain is an unexpected Ras-association domain with high affinity for GTP-bound Ras and Rap G-proteins ...

    SHANK3, a synaptic scaffold protein and actin regulator, is widely expressed outside of the central nervous system with predominantly unknown function. Solving the structure of the SHANK3 N-terminal region revealed that the SPN domain is an unexpected Ras-association domain with high affinity for GTP-bound Ras and Rap G-proteins. The role of Rap1 in integrin activation is well established but the mechanisms to antagonize it remain largely unknown. Here, we show that SHANK1 and SHANK3 act as integrin activation inhibitors by sequestering active Rap1 and R-Ras via the SPN domain and thus limiting their bioavailability at the plasma membrane. Consistently, SHANK3 silencing triggers increased plasma membrane Rap1 activity, cell spreading, migration and invasion. Autism-related mutations within the SHANK3 SPN domain (R12C and L68P) disrupt G-protein interaction and fail to counteract integrin activation along the Rap1-RIAM-talin axis in cancer cells and neurons. Altogether, we establish SHANKs as critical regulators of G-protein signalling and integrin-dependent processes.


    Organizational Affiliation

    Department of Biochemistry and Food Chemistry, University of Turku, Turku, Finland.



Macromolecules
Find similar proteins by:  (by identity cutoff)  |  Structure
Entity ID: 1
MoleculeChainsSequence LengthOrganismDetailsImage
SH3 AND MULTIPLE ANKYRIN REPEAT DOMAINS PROTEIN 3 A348Rattus norvegicusMutation(s): 0 
Gene Names: Shank3Prosap2
Find proteins for Q9JLU4 (Rattus norvegicus)
Explore Q9JLU4 
Go to UniProtKB:  Q9JLU4
Protein Feature View
Expand
  • Reference Sequence
Small Molecules
Ligands 1 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
EDO
Query on EDO

Download Ideal Coordinates CCD File 
A
1,2-ETHANEDIOL
C2 H6 O2
LYCAIKOWRPUZTN-UHFFFAOYSA-N
 Ligand Interaction
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.17 Å
  • R-Value Free: 0.186 
  • R-Value Work: 0.163 
  • R-Value Observed: 0.164 
  • Space Group: P 41 21 2
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 86.76α = 90
b = 86.76β = 90
c = 158.73γ = 90
Software Package:
Software NamePurpose
PHENIXrefinement
MOSFLMdata reduction
SCALAdata scaling
PHASERphasing

Structure Validation

View Full Validation Report



Entry History 

Deposition Data

Revision History  (Full details and data files)

  • Version 1.0: 2017-01-25
    Type: Initial release
  • Version 1.1: 2017-03-22
    Changes: Database references
  • Version 1.2: 2017-04-12
    Changes: Database references