Biological Assembly 1  

 3D View: Structure

Standalone Viewers  
Protein Workshop | Ligand Explorer

Global Symmetry: Asymmetric - C1 
Global Stoichiometry: Monomer - A 

Biological assembly 1 assigned by authors.

Macromolecule Content

• Total Structure Weight: 13020.64 
• Atom Count: 768 
• Residue Count: 117 
• Unique protein chains: 2

2MBH

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

• DOI: 10.2210/pdb2MBH/pdb
• BMRB: 19399

• Classification: TRANSCRIPTION
• Organism(s): Homo sapiens
• Expression System: Escherichia coli


• Deposited: 2013-07-31 Released: 2013-10-09 
• Deposition Author(s): Raiola, L., Omichinski, J.G.

---

Experimental Data Snapshot

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

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

• PubMed: 24139988 
• 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. 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
Molecule	Chains	Sequence Length	Organism	Details
Krueppel-like factor 1	B	41	Homo sapiens	Mutation(s): 0  Gene Names: KLF1 (EKLF)
Find proteins for Q13351 (Homo sapiens) Go to Gene View: KLF1 Go to UniProtKB:  Q13351

Entity ID: 2
Molecule	Chains	Sequence Length	Organism	Details
Ubiquitin	A	76	Homo sapiens	Mutation(s): 0  Gene 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

Entry History 

Deposition Data

• Deposited Date: 2013-07-31 
• Released Date: 2013-10-09 
• Deposition Author(s): Raiola, L., Omichinski, J.G.

Revision History 

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