1Q4Q

Crystal structure of a DIAP1-Dronc complex


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.1 Å
  • R-Value Free: 0.246 
  • R-Value Work: 0.199 

wwPDB Validation 3D Report Full Report


This is version 1.2 of the entry. See complete history

Literature

Molecular mechanism of Reaper-Grim-Hid-mediated suppression of DIAP1-dependent Dronc ubiquitination

Chai, J.Yan, N.Huh, J.R.Wu, J.-W.Li, W.Hay, B.A.Shi, Y.

(2003) Nat.Struct.Mol.Biol. 10: 892-898

  • DOI: 10.1038/nsb989

  • PubMed Abstract: 
  • The inhibitor of apoptosis protein DIAP1 inhibits Dronc-dependent cell death by ubiquitinating Dronc. The pro-death proteins Reaper, Hid and Grim (RHG) promote apoptosis by antagonizing DIAP1 function. Here we report the structural basis of Dronc rec ...

    The inhibitor of apoptosis protein DIAP1 inhibits Dronc-dependent cell death by ubiquitinating Dronc. The pro-death proteins Reaper, Hid and Grim (RHG) promote apoptosis by antagonizing DIAP1 function. Here we report the structural basis of Dronc recognition by DIAP1 as well as a novel mechanism by which the RHG proteins remove DIAP1-mediated downregulation of Dronc. Biochemical and structural analyses revealed that the second BIR (BIR2) domain of DIAP1 recognizes a 12-residue sequence in Dronc. This recognition is essential for DIAP1 binding to Dronc, and for targeting Dronc for ubiquitination. Notably, the Dronc-binding surface on BIR2 coincides with that required for binding to the N termini of the RHG proteins, which competitively eliminate DIAP1-mediated ubiquitination of Dronc. These observations reveal the molecular mechanisms of how DIAP1 recognizes Dronc, and more importantly, how the RHG proteins remove DIAP1-mediated ubiquitination of Dronc.


    Organizational Affiliation

    Department of Molecular Biology, Princeton University, Lewis Thomas Laboratory, Washington Road, Princeton, New Jersey 08544, USA.




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
Apoptosis 1 inhibitor
A, B, C, D, E, F, G, H, I, J
124Drosophila melanogasterGene Names: Diap1 (Iap1, th)
EC: 6.3.2.-
Find proteins for Q24306 (Drosophila melanogaster)
Go to UniProtKB:  Q24306
Entity ID: 2
MoleculeChainsSequence LengthOrganismDetails
Nedd2-like caspase CG8091-PA
K, L, M, N, O, P, Q, R, S, T
12Drosophila melanogasterGene Names: Dronc (Nc)
EC: 3.4.22.-
Find proteins for Q9XYF4 (Drosophila melanogaster)
Go to UniProtKB:  Q9XYF4
Small Molecules
Ligands 1 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
ZN
Query on ZN

Download SDF File 
Download CCD File 
A, B, C, D, E, F, G, H, I, J
ZINC ION
Zn
PTFCDOFLOPIGGS-UHFFFAOYSA-N
 Ligand Interaction
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.1 Å
  • R-Value Free: 0.246 
  • R-Value Work: 0.199 
  • Space Group: P 65
Unit Cell:
Length (Å)Angle (°)
a = 128.900α = 90.00
b = 128.900β = 90.00
c = 183.695γ = 120.00
Software Package:
Software NamePurpose
CNSrefinement

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History 

Deposition Data

Revision History 

  • Version 1.0: 2003-11-04
    Type: Initial release
  • Version 1.1: 2008-04-29
    Type: Version format compliance
  • Version 1.2: 2011-07-13
    Type: Version format compliance