5ED9

Crystal structure of CC1 of mouse SUN2


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.009 Å
  • R-Value Free: 0.257 
  • R-Value Work: 0.211 

wwPDB Validation 3D Report Full Report


This is version 1.1 of the entry. See complete history

Literature

Coiled-Coil Domains of SUN Proteins as Intrinsic Dynamic Regulators

Nie, S.Ke, H.Gao, F.Ren, J.Wang, M.Huo, L.Gong, W.Feng, W.

(2016) Structure 24: 80-91

  • DOI: 10.1016/j.str.2015.10.024
  • Primary Citation of Related Structures:  

  • PubMed Abstract: 
  • SUN proteins are the core components of LINC complexes that span across the nuclear envelope for nuclear positioning and migration. SUN proteins contain at least one predicted coiled-coil domain preceding the SUN domain. Here, we found that the two c ...

    SUN proteins are the core components of LINC complexes that span across the nuclear envelope for nuclear positioning and migration. SUN proteins contain at least one predicted coiled-coil domain preceding the SUN domain. Here, we found that the two coiled-coil domains (CC1 and CC2) of SUN2 exhibit distinct oligomeric states. CC2 is a monomer in solution. The structure of the CC2-SUN monomer revealed that CC2 unexpectedly folds as a three-helix bundle that interacts with the SUN domain and locks it in an inactive conformation. In contrast, CC1 is a trimer. The structure of the CC1 trimer demonstrated that CC1 is an imperfect coiled coil for the trimerization and activation of the SUN domain. Modulations of CC1 and CC2 dictate different oligomeric states of CC1-CC2-SUN, which is essential for LINC complex formation. Thus, the two coiled-coil domains of SUN2 act as the intrinsic dynamic regulators for controlling the SUN domain activity.


    Organizational Affiliation

    National Laboratory of Biomacromolecules, Institute of Biophysics, Chinese Academy of Sciences, 15 Datun Road, Beijing 100101, China.




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
SUN domain-containing protein 2
A, B, C
78Mus musculusMutation(s): 0 
Gene Names: Sun2 (Unc84b)
Find proteins for Q8BJS4 (Mus musculus)
Go to UniProtKB:  Q8BJS4
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.009 Å
  • R-Value Free: 0.257 
  • R-Value Work: 0.211 
  • Space Group: C 1 2 1
Unit Cell:
Length (Å)Angle (°)
a = 86.371α = 90.00
b = 34.743β = 101.49
c = 99.839γ = 90.00
Software Package:
Software NamePurpose
HKL-2000data collection
PHASERphasing
PDB_EXTRACTdata extraction
HKL-2000data reduction
REFMACrefinement
HKL-2000data scaling
SHELXCDphasing

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History 

Deposition Data

Revision History 

  • Version 1.0: 2016-01-13
    Type: Initial release
  • Version 1.1: 2016-01-20
    Type: Database references