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: 19220.33 
• Atom Count: 1290 
• Residue Count: 167 
• Unique protein chains: 1

2L23

NMR structure of the ACID (ACtivator Interacting Domain) of the human mediator Med25 protein

• DOI: 10.2210/pdb2L23/pdb

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


• Deposited: 2010-08-10 Released: 2010-11-24 
• Deposition Author(s): Bontems, F., Monte, D., Dewitte, F., Villeret, V.

---

Experimental Data Snapshot

• Method: SOLUTION NMR
• Conformers Calculated: 20 
• Conformers Submitted: 20 
• Selection Criteria: all calculated structures submitted 

Literature

NMR structure of the human Mediator MED25 ACID domain.

Bontems, F., Verger, A., Dewitte, F., Lens, Z., Baert, J.L., Ferreira, E., Launoit, Y., Sizun, C., Guittet, E., Villeret, V., Monte, D.

(2011) J.Struct.Biol. 174: 245-251

• PubMed: 20974256 
• DOI: 10.1016/j.jsb.2010.10.011


• PubMed Abstract: 
  

MED25 (ARC92/ACID1) is a 747 residues subunit specific to higher eukaryote Mediator complex, an essential component of the RNA polymerase II general transcriptional machinery. MED25 is a target of the Herpes simplex virus transactivator protein VP16. MED25 interacts with VP16 through a central MED25 PTOV (Prostate tumour overexpressed)/ACID (Activator interacting domain) domain of unknown structure. As a first step towards understanding the mechanism of recruitment of transactivation domains by MED25, we report here the NMR structure of the MED25 ACID domain. The domain architecture consists of a closed β-barrel with seven strands (Β1-Β7) and three α-helices (H1-H3), an architecture showing similarities to that of the SPOC (Spen paralog and ortholog C-terminal domain) domain-like superfamily. Preliminary NMR chemical shift mapping showed that VP16 H2 (VP16C) interacts with MED25 ACID through one face of the β-barrel, defined by strands B4-B7-B6.

---

Organizational Affiliation: 

CNRS UPR 2301, Chimie et biochimie structurales, Institut de Chimie des Substances Naturelles, Centre de recherche de Gif-sur-Yvette, 91190 Gif-sur-Yvette, France.

Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
Molecule	Chains	Sequence Length	Organism	Details
Mediator of RNA polymerase II transcription subunit 25	A	167	Homo sapiens	Mutation(s): 0  Gene Names: MED25 (ACID1, ARC92, PTOV2)
Find proteins for Q71SY5 (Homo sapiens) Go to Gene View: MED25 Go to UniProtKB:  Q71SY5

Experimental Data & Validation

Experimental Data

• Method: SOLUTION NMR
• Conformers Calculated: 20 
• Conformers Submitted: 20 
• Selection Criteria: all calculated structures submitted 
• Olderado: 2L23 Olderado

Structure Validation

Entry History 

Deposition Data

• Deposited Date: 2010-08-10 
• Released Date: 2010-11-24 
• Deposition Author(s): Bontems, F., Monte, D., Dewitte, F., Villeret, V.

Revision History 

• Version 1.0: 2010-11-24
  Type: Initial release
• Version 1.1: 2011-07-13
  Type: Version format compliance