Crystal structure of a complex of the Miz1- and BCL6 POZ domains.

Experimental Data Snapshot

  • Resolution: 2.23 Å
  • R-Value Free: 0.240 
  • R-Value Work: 0.211 
  • R-Value Observed: 0.213 

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Structures of heterodimeric POZ domains of Miz1/BCL6 and Miz1/NAC1.

Stead, M.A.Wright, S.C.

(2014) Acta Crystallogr F Struct Biol Commun 70: 1591-1596

  • DOI: https://doi.org/10.1107/S2053230X14023449
  • Primary Citation of Related Structures:  
    4U2M, 4U2N

  • PubMed Abstract: 

    The POZ domain is an evolutionarily conserved protein-protein interaction domain that is found in approximately 40 mammalian transcription factors. POZ domains mediate both homodimerization and the heteromeric interactions of different POZ-domain transcription factors with each other. Miz1 is a POZ-domain transcription factor that regulates cell-cycle arrest and DNA-damage responses. The activities of Miz1 are altered by its interaction with the POZ-domain transcriptional repressors BCL6 and NAC1, and these interactions have been implicated in tumourigenesis in B-cell lymphomas and in ovarian serous carcinomas that overexpress BCL6 and NAC1, respectively. A strategy for the purification of tethered POZ domains that form forced heterodimers is described, and crystal structures of the heterodimeric POZ domains of Miz1/BCL6 and of Miz1/NAC1 are reported. These structures will be relevant for the design of therapeutics that target POZ-domain interaction interfaces.

  • Organizational Affiliation

    School of Biology, University of Leeds, Leeds LS2 9JT, England.

Find similar proteins by:  (by identity cutoff)  |  3D Structure
Entity ID: 1
MoleculeChains Sequence LengthOrganismDetailsImage
Zinc finger and BTB domain-containing protein 17,B-cell lymphoma 6 protein
A, B, C, D
256Homo sapiensMutation(s): 0 
UniProt & NIH Common Fund Data Resources
Find proteins for Q13105 (Homo sapiens)
Explore Q13105 
Go to UniProtKB:  Q13105
PHAROS:  Q13105
GTEx:  ENSG00000116809 
Find proteins for P41182 (Homo sapiens)
Explore P41182 
Go to UniProtKB:  P41182
PHAROS:  P41182
GTEx:  ENSG00000113916 
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt GroupsQ13105P41182
Sequence Annotations
  • Reference Sequence
Experimental Data & Validation

Experimental Data

  • Resolution: 2.23 Å
  • R-Value Free: 0.240 
  • R-Value Work: 0.211 
  • R-Value Observed: 0.213 
  • Space Group: P 21 21 21
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 91.85α = 90
b = 97.88β = 90
c = 119.88γ = 90
Software Package:
Software NamePurpose
Aimlessdata scaling
XDSdata reduction
PDB_EXTRACTdata extraction
ARPmodel building
XSCALEdata reduction

Structure Validation

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Entry History & Funding Information

Deposition Data

Funding OrganizationLocationGrant Number
Yorkshire Cancer ResearchUnited KingdomL334

Revision History  (Full details and data files)

  • Version 1.0: 2014-12-10
    Type: Initial release
  • Version 1.1: 2014-12-17
    Changes: Database references
  • Version 1.2: 2024-05-08
    Changes: Data collection, Database references