2Q81

Crystal Structure of the Miz-1 BTB/POZ domain


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.1 Å
  • R-Value Free: 0.229 
  • R-Value Work: 0.181 

wwPDB Validation 3D Report Full Report


This is version 1.1 of the entry. See complete history

Literature

A Beta-Sheet Interaction Interface Directs the Tetramerisation of the Miz-1 POZ Domain

Stead, M.A.Trinh, C.H.Garnett, J.A.Carr, S.B.Baron, A.J.Edwards, T.A.Wright, S.C.

(2007) J.Mol.Biol. 373: 820-826

  • DOI: 10.1016/j.jmb.2007.08.026

  • PubMed Abstract: 
  • The POZ/BTB domain is an evolutionarily conserved motif found in approximately 40 zinc-finger transcription factors (POZ-ZF factors). Several POZ-ZF factors are implicated in human cancer, and POZ domain interaction interfaces represent an attractive ...

    The POZ/BTB domain is an evolutionarily conserved motif found in approximately 40 zinc-finger transcription factors (POZ-ZF factors). Several POZ-ZF factors are implicated in human cancer, and POZ domain interaction interfaces represent an attractive target for therapeutic intervention. Miz-1 (Myc-interacting zinc-finger protein) is a POZ-ZF factor that regulates DNA-damage-induced cell cycle arrest and plays an important role in human cancer by virtue of its interaction with the c-Myc and BCL6 oncogene products. The Miz-1 POZ domain mediates both self-association and the recruitment of non-POZ partners. POZ-ZF factors generally function as homodimers, although higher-order associations and heteromeric interactions are known to be physiologically important; crucially, the interaction interfaces in such large complexes have not been characterised. We report here the crystal structure of the Miz-1 POZ domain up to 2.1 A resolution. The tetrameric organisation of Miz-1 POZ reveals two types of interaction interface between subunits; an interface of alpha-helices resembles the dimerisation interface of reported POZ domain structures, whereas a novel beta-sheet interface directs the association of two POZ domain dimers. We show that the beta-sheet interface directs the tetramerisation of the Miz-1 POZ domain in solution and therefore represents a newly described candidate interface for the higher-order homo- and hetero-oligomerisation of POZ-ZF proteins in vivo.


    Organizational Affiliation

    Molecular Cell Biology Research Group, Institute of Molecular and Cellular Biology, Faculty of Biological Sciences, University of Leeds, Garstang/Astbury Buildings, Leeds LS2 9JT, UK.




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
Miz-1 protein
A, B, C, D
119Homo sapiensGene Names: ZBTB17 (MIZ1, ZNF151, ZNF60)
Find proteins for Q13105 (Homo sapiens)
Go to Gene View: ZBTB17
Go to UniProtKB:  Q13105
Small Molecules
Ligands 1 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
PG4
Query on PG4

Download SDF File 
Download CCD File 
B
TETRAETHYLENE GLYCOL
C8 H18 O5
UWHCKJMYHZGTIT-UHFFFAOYSA-N
 Ligand Interaction
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.1 Å
  • R-Value Free: 0.229 
  • R-Value Work: 0.181 
  • Space Group: C 2 2 21
Unit Cell:
Length (Å)Angle (°)
a = 65.535α = 90.00
b = 128.522β = 90.00
c = 116.038γ = 90.00
Software Package:
Software NamePurpose
ADSCdata collection
REFMACrefinement
SCALAdata scaling
PDB_EXTRACTdata extraction
MOSFLMdata reduction
MrBUMPphasing

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History 

Deposition Data

Revision History 

  • Version 1.0: 2007-11-06
    Type: Initial release
  • Version 1.1: 2011-07-13
    Type: Advisory, Derived calculations, Version format compliance