4JGH

Structure of the SOCS2-Elongin BC complex bound to an N-terminal fragment of Cullin5


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 3 Å
  • R-Value Free: 0.248 
  • R-Value Work: 0.225 

wwPDB Validation 3D Report Full Report


This is version 1.0 of the entry. See complete history

Literature

Structural basis of intersubunit recognition in elongin BC-cullin 5-SOCS box ubiquitin-protein ligase complexes.

Kim, Y.K.Kwak, M.J.Ku, B.Suh, H.Y.Joo, K.Lee, J.Jung, J.U.Oh, B.H.

(2013) Acta Crystallogr.,Sect.D 69: 1587-1597

  • DOI: 10.1107/S0907444913011220

  • PubMed Abstract: 
  • The cullin-RING ubiquitin ligases are multisubunit complexes that ubiquitinate various proteins. Six different cullins encoded by the human genome selectively pair with different adaptors and substrate receptors. It is presently poorly understood how ...

    The cullin-RING ubiquitin ligases are multisubunit complexes that ubiquitinate various proteins. Six different cullins encoded by the human genome selectively pair with different adaptors and substrate receptors. It is presently poorly understood how cullin-2 (Cul2) and cullin-5 (Cul5) associate specifically with their adaptor elongin BC and a SOCS-box-containing substrate receptor. Here, crystallographic and mutational analyses of a quaternary complex between the N-terminal half of Cul5, elongin BC and SOCS2 are reported. Cul5 interacts extensively with elongin BC via residues that are highly conserved in Cul2 but not in other cullins. Cul5 also interacts with SOCS2, but via only two residues, Pro184 and Arg186, which are located in the C-terminal part of the SOCS box called the Cul5 box. Pro184 makes a ring-to-ring interaction with Trp53 of Cul5, which is substituted by alanine in Cul2. This interaction is shown to contribute significantly to the overall binding affinity between Cul5 and SOCS2-elongin BC. This study provides structural bases underlying the specificity of Cul5 and Cul2 for elongin BC and their preferential association with Cul5 or Cul2 box-containing substrate receptors.


    Organizational Affiliation

    Department of Biological Sciences, Korea Advanced Institute of Science and Technology, Daejeon 305-701, Republic of Korea.




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
Suppressor of cytokine signaling 2
A
173Homo sapiensMutation(s): 0 
Gene Names: SOCS2 (CIS2, SSI2, STATI2)
Find proteins for O14508 (Homo sapiens)
Go to Gene View: SOCS2
Go to UniProtKB:  O14508
Entity ID: 2
MoleculeChainsSequence LengthOrganismDetails
Transcription elongation factor B polypeptide 2
B
118Mus musculusMutation(s): 0 
Gene Names: Elob (Tceb2)
Find proteins for P62869 (Mus musculus)
Go to UniProtKB:  P62869
Entity ID: 3
MoleculeChainsSequence LengthOrganismDetails
Transcription elongation factor B polypeptide 1
C
96Mus musculusMutation(s): 0 
Gene Names: Eloc (Tceb1)
Find proteins for P83940 (Mus musculus)
Go to UniProtKB:  P83940
Entity ID: 4
MoleculeChainsSequence LengthOrganismDetails
Cullin-5
D
378Homo sapiensMutation(s): 2 
Gene Names: CUL5 (VACM1)
Find proteins for Q93034 (Homo sapiens)
Go to Gene View: CUL5
Go to UniProtKB:  Q93034
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 3 Å
  • R-Value Free: 0.248 
  • R-Value Work: 0.225 
  • Space Group: C 2 2 21
Unit Cell:
Length (Å)Angle (°)
a = 138.849α = 90.00
b = 141.456β = 90.00
c = 182.001γ = 90.00
Software Package:
Software NamePurpose
CNSphasing
HKL-2000data reduction
ADSCdata collection
CNSrefinement
HKL-2000data scaling

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History 

Deposition Data

Revision History 

  • Version 1.0: 2013-08-07
    Type: Initial release