2NN2

Crystal structure of the BTB domain from the LRF/ZBTB7 transcriptional regulator


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.1 Å
  • R-Value Free: 0.267 
  • R-Value Work: 0.214 

wwPDB Validation 3D Report Full Report


This is version 1.2 of the entry. See complete history

Literature

Crystal structure of the BTB domain from the LRF/ZBTB7 transcriptional regulator.

Stogios, P.J.Chen, L.Prive, G.G.

(2007) Protein Sci. 16: 336-342

  • DOI: 10.1110/ps.062660907

  • PubMed Abstract: 
  • BTB-zinc finger (BTB-ZF) proteins are transcription regulators with roles in development, differentiation, and oncogenesis. In these proteins, the BTB domain (also known as the POZ domain) is a protein-protein interaction motif that contains a dimeri ...

    BTB-zinc finger (BTB-ZF) proteins are transcription regulators with roles in development, differentiation, and oncogenesis. In these proteins, the BTB domain (also known as the POZ domain) is a protein-protein interaction motif that contains a dimerization interface, a possible oligomerization surface, and surfaces for interactions with other factors, including nuclear co-repressors and histone deacetylases. The BTB-ZF protein LRF (also known as ZBTB7, FBI-1, OCZF, and Pokemon) is a master regulator of oncogenesis, and represses the transcription of a variety of important genes, including the ARF, c-fos, and c-myc oncogenes and extracellular matrix genes. We determined the crystal structure of the BTB domain from human LRF to 2.1 A and observed the canonical BTB homodimer fold. However, novel features are apparent on the surface of the homodimer, including differences in the lateral groove and charged pocket regions. The residues that line the lateral groove have little similarity with the equivalent residues from the BCL6 BTB domain, and we show that the 17-residue BCL6 Binding Domain (BBD) from the SMRT co-repressor does not bind to the LRF BTB domain.


    Organizational Affiliation

    Department of Medical Biophysics, University of Toronto, 101 College Street, Toronto, Ontario, Canada.




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
Zinc finger and BTB domain-containing protein 7A
A, B
133Homo sapiensMutation(s): 0 
Gene Names: ZBTB7A (FBI1, LRF, ZBTB7, ZNF857A)
Find proteins for O95365 (Homo sapiens)
Go to Gene View: ZBTB7A
Go to UniProtKB:  O95365
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.1 Å
  • R-Value Free: 0.267 
  • R-Value Work: 0.214 
  • Space Group: P 41 21 2
Unit Cell:
Length (Å)Angle (°)
a = 72.143α = 90.00
b = 72.143β = 90.00
c = 116.048γ = 90.00
Software Package:
Software NamePurpose
HKL-2000data reduction
HKL-2000data collection
REFMACrefinement
PHASERphasing
SCALEPACKdata scaling

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History 

Deposition Data

Revision History 

  • Version 1.0: 2006-11-21
    Type: Initial release
  • Version 1.1: 2008-05-01
    Type: Version format compliance
  • Version 1.2: 2011-07-13
    Type: Version format compliance