2A90 | pdb_00002a90

Crystal Structure of the tandem WWE domain of Drosophila Deltex

• PDB DOI: https://doi.org/10.2210/pdb2A90/pdb

• Classification: METAL BINDING PROTEIN
• Organism(s): Drosophila melanogaster
• Expression System: Escherichia coli
• Mutation(s): Yes 


• Deposited: 2005-07-10 Released: 2005-11-22 
• Deposition Author(s): Zweifel, M.E., Leahy, D.J., Barrick, D.

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Experimental Data Snapshot

• Method: X-RAY DIFFRACTION
• Resolution: 2.15 Å
• R-Value Free: 
  0.247 (Depositor), 0.265 (DCC) 
• R-Value Work: 
  0.230 (Depositor), 0.246 (DCC) 

Literature

Structure and Notch Receptor Binding of the Tandem WWE Domain of Deltex.

Zweifel, M.E., Leahy, D.J., Barrick, D.

(2005) Structure 13: 1599-1611

• PubMed: 16271883 
• DOI: https://doi.org/10.1016/j.str.2005.07.015
• Primary Citation of Related Structures:  
  2A90


• PubMed Abstract: 
  

  Deltex is a cytosolic effector of Notch signaling thought to bind through its N-terminal domain to the Notch receptor. Here we report the structure of the Drosophila Deltex N-terminal domain, which contains two tandem WWE sequence repeats. The WWE repeats, which adopt a novel fold, are related by an approximate two-fold axis of rotation. Although the WWE repeats are structurally distinct, they interact extensively and form a deep cleft at their junction that appears well suited for ligand binding. The two repeats are thermodynamically coupled; this coupling is mediated in part by a conserved segment that is immediately C-terminal to the second WWE domain. We demonstrate that although the Deltex WWE tandem is monomeric in solution, it forms a heterodimer with the ankyrin domain of the Notch receptor. These results provide structural and functional insight into how Deltex modulates Notch signaling, and how WWE modules recognize targets for ubiquitination.

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Organizational Affiliation: 
• T.C. Jenkins Department of Biophysics, Johns Hopkins University, Baltimore, Maryland 21218, USA.

Biological Assembly 1  

Global Symmetry: Asymmetric - C1 
Global Stoichiometry: Monomer - A1 

Biological assembly 1 assigned by authors.

Macromolecule Content 

• Total Structure Weight: 26.81 kDa 
• Atom Count: 1,340 
• Modeled Residue Count: 160 
• Deposited Residue Count: 240 
• Unique protein chains: 1

Macromolecules

Entity ID: 1
Molecule	Chains	Sequence Length	Organism	Details	Image
Deltex protein	A	240	Drosophila melanogaster	Mutation(s): 5  Gene Names: dx EC: 2.3.2.27
UniProt
Find proteins for Q23985 (Drosophila melanogaster) Explore Q23985  Go to UniProtKB:  Q23985

Small Molecules

Modified Residues  1 Unique
ID	Chains	Type	Formula	2D Diagram	Parent
MSE	A	L-PEPTIDE LINKING	C5 H11 N O2 Se		MET

Experimental Data & Validation

Experimental Data

• Method: X-RAY DIFFRACTION
• Resolution: 2.15 Å
• R-Value Free:  0.247 (Depositor), 0.265 (DCC) 
• R-Value Work:  0.230 (Depositor), 0.246 (DCC) 

Space Group: P 4₁

Unit Cell:

Length ( Å )	Angle ( ˚ )
a = 57.76	α = 90
b = 57.76	β = 90
c = 80.02	γ = 90

Software Package:

Software Name	Purpose
CNS	refinement
PDB_EXTRACT	data extraction
DENZO	data reduction
SCALEPACK	data scaling
SOLVE	phasing

Structure Validation

Entry History 

Deposition Data

• Released Date: 2005-11-22 
Deposition Author(s): Zweifel, M.E., Leahy, D.J., Barrick, D.

Revision History  

• Version 1.0: 2005-11-22
  Type: Initial release
  
• Version 1.1: 2008-04-30
  Changes: Version format compliance
• Version 1.2: 2011-07-13
  Changes: Version format compliance
• Version 1.3: 2024-11-13
  Changes: Data collection, Database references, Derived calculations, Structure summary