2MBH

NMR structure of EKLF(22-40)/Ubiquitin Complex


Experimental Data Snapshot

  • Method: SOLUTION NMR
  • Conformers Calculated: 100 
  • Conformers Submitted: 20 
  • Selection Criteria: structures with the lowest energy 

wwPDB Validation 3D Report Full Report


This is version 1.1 of the entry. See complete history

Literature

Structural Characterization of a Noncovalent Complex between Ubiquitin and the Transactivation Domain of the Erythroid-Specific Factor EKLF.

Raiola, L.Lussier-Price, M.Gagnon, D.Lafrance-Vanasse, J.Mascle, X.Arseneault, G.Legault, P.Archambault, J.Omichinski, J.G.

(2013) Structure 21: 2014-2024

  • DOI: 10.1016/j.str.2013.08.027

  • PubMed Abstract: 
  • Like other acidic transactivation domains (TAD), the minimal TAD from the erythroid-specific transcription factor EKLF (EKLFTAD) has been shown to contribute both to its transcriptional activity as well as to its ubiquitin(UBI)-mediated degradation. ...

    Like other acidic transactivation domains (TAD), the minimal TAD from the erythroid-specific transcription factor EKLF (EKLFTAD) has been shown to contribute both to its transcriptional activity as well as to its ubiquitin(UBI)-mediated degradation. In this article, we examine the activation-degradation role of the acidic TAD of EKLF and demonstrate that the first 40 residues (EKLFTAD1) within this region form a noncovalent interaction with UBI. Nuclear magnetic resonance (NMR) structural studies of an EKLFTAD1-UBI complex show that EKLFTAD1 adopts a 14-residue α helix that forms the recognition interface with UBI in a similar manner as the UBI-interacting helix of Rabex5. We also identify a similar interaction between UBI and the activation-degradation region of SREBP1a, but not with the activation-degradation regions of p53, GAL4, and VP16. These results suggest that select activation-degradation regions like the ones found in EKLF and SREBP1a function in part through their ability to form noncovalent interactions with UBI.


    Organizational Affiliation

    Département de Biochimie, Université de Montréal, C.P. 6128 Succursale Centre-Ville, Montréal, QC H3C 3J7, Canada.




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
Krueppel-like factor 1
B
41Homo sapiensGene Names: KLF1 (EKLF)
Find proteins for Q13351 (Homo sapiens)
Go to Gene View: KLF1
Go to UniProtKB:  Q13351
Entity ID: 2
MoleculeChainsSequence LengthOrganismDetails
Ubiquitin
A
76Homo sapiensGene Names: UBA52 (UBCEP2)
Find proteins for P62987 (Homo sapiens)
Go to Gene View: UBA52
Go to UniProtKB:  P62987
Experimental Data & Validation

Experimental Data

  • Method: SOLUTION NMR
  • Conformers Calculated: 100 
  • Conformers Submitted: 20 
  • Selection Criteria: structures with the lowest energy 

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History 

Deposition Data

Revision History 

  • Version 1.0: 2013-10-09
    Type: Initial release
  • Version 1.1: 2013-11-27
    Type: Database references