Crystal structure of the zinc finger associated domain of the Drosophila transcription factor Grauzone

Experimental Data Snapshot

  • Resolution: 2.00 Å
  • R-Value Free: 0.267 
  • R-Value Work: 0.241 
  • R-Value Observed: 0.242 

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The zinc finger-associated domain of the Drosophila transcription factor grauzone is a novel zinc-coordinating protein-protein interaction module

Jauch, R.Bourenkov, G.P.Chung, H.-R.Urlaub, H.Reidt, U.Wahl, M.C.

(2003) Structure 11: 1393-1402

  • DOI: https://doi.org/10.1016/j.str.2003.09.015
  • Primary Citation of Related Structures:  

  • PubMed Abstract: 

    About one-third of the more than 300 C2H2 zinc finger proteins of Drosophila contain a conserved sequence motif, the zinc finger-associated domain (ZAD). Genes that encode ZAD proteins are specific for and expanded in the genomes of insects. Only three ZAD-encoding gene functions are established, and the role of ZAD is unknown. Here we present the crystal structure of the ZAD of Grauzone (ZAD(Grau)), a Drosophila transcription factor that specifically controls the maternal Cdc20-like APC subunit Cortex. ZAD forms an atypical treble-clef-like zinc-coordinating fold. Head-to-tail arrangement of two ZAD(Grau) molecules in the crystals suggests dimer formation, an observation supported by crosslinking and dynamic light scattering. The results indicate that ZAD provides a novel protein-protein interaction module that characterizes a large family of insect transcription factors.

  • Organizational Affiliation

    Max-Planck Institut für biophysikalische Chemie, Abteilung Molekulare Entwicklungsbiologie, Röntgenkristallographie, Am Fassberg 11, D-37077 Göttingen, Germany.

Find similar proteins by:  (by identity cutoff)  |  3D Structure
Entity ID: 1
MoleculeChains Sequence LengthOrganismDetailsImage
Transcription factor grauzone80Drosophila melanogasterMutation(s): 0 
Gene Names: grauzone
Find proteins for Q9U405 (Drosophila melanogaster)
Explore Q9U405 
Go to UniProtKB:  Q9U405
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt GroupQ9U405
Sequence Annotations
  • Reference Sequence
Small Molecules
Ligands 1 Unique
IDChains Name / Formula / InChI Key2D Diagram3D Interactions
Query on ZN

Download Ideal Coordinates CCD File 
B [auth A]ZINC ION
Experimental Data & Validation

Experimental Data

  • Resolution: 2.00 Å
  • R-Value Free: 0.267 
  • R-Value Work: 0.241 
  • R-Value Observed: 0.242 
  • Space Group: P 41 21 2
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 48.66α = 90
b = 48.66β = 90
c = 82.123γ = 90
Software Package:
Software NamePurpose
SCALEPACKdata scaling
HKL-2000data collection
HKL-2000data reduction

Structure Validation

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Entry History 

Deposition Data

Revision History  (Full details and data files)

  • Version 1.0: 2003-11-04
    Type: Initial release
  • Version 1.1: 2008-04-29
    Changes: Version format compliance
  • Version 1.2: 2011-07-13
    Changes: Advisory, Derived calculations, Version format compliance
  • Version 1.3: 2019-07-24
    Changes: Data collection, Refinement description
  • Version 1.4: 2024-02-14
    Changes: Data collection, Database references, Derived calculations