1JD6

Crystal Structure of DIAP1-BIR2/Hid Complex


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.7 Å
  • R-Value Free: 0.287 
  • R-Value Work: 0.217 

wwPDB Validation 3D Report Full Report


This is version 1.3 of the entry. See complete history

Literature

Structural analysis of a functional DIAP1 fragment bound to grim and hid peptides.

Wu, J.W.Cocina, A.E.Chai, J.Hay, B.A.Shi, Y.

(2001) Mol.Cell 8: 95-104

  • Primary Citation of Related Structures:  

  • PubMed Abstract: 
  • The inhibitor of apoptosis protein DIAP1 suppresses apoptosis in Drosophila, with the second BIR domain (BIR2) playing an important role. Three proteins, Hid, Grim, and Reaper, promote apoptosis, in part by binding to DIAP1 through their conserved N- ...

    The inhibitor of apoptosis protein DIAP1 suppresses apoptosis in Drosophila, with the second BIR domain (BIR2) playing an important role. Three proteins, Hid, Grim, and Reaper, promote apoptosis, in part by binding to DIAP1 through their conserved N-terminal sequences. The crystal structures of DIAP1-BIR2 by itself and in complex with the N-terminal peptides from Hid and Grim reveal that these peptides bind a surface groove on DIAP1, with the first four amino acids mimicking the binding of the Smac tetrapeptide to XIAP. The next 3 residues also contribute to binding through hydrophobic interactions. Interestingly, peptide binding induces the formation of an additional alpha helix in DIAP1. Our study reveals the structural conservation and diversity necessary for the binding of IAPs by the Drosophila Hid/Grim/Reaper and the mammalian Smac proteins.


    Organizational Affiliation

    Department of Molecular Biology, Lewis Thomas Laboratory, Princeton University, Princeton, NJ 08544, USA.




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
APOPTOSIS 1 INHIBITOR
A
124Drosophila melanogasterGene Names: Diap1 (Iap1, th)
EC: 2.3.2.27
Find proteins for Q24306 (Drosophila melanogaster)
Go to UniProtKB:  Q24306
Entity ID: 2
MoleculeChainsSequence LengthOrganismDetails
head involution defective protein
B
10Drosophila melanogasterGene Names: hid (W)
Find proteins for Q24106 (Drosophila melanogaster)
Go to UniProtKB:  Q24106
Small Molecules
Ligands 1 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
ZN
Query on ZN

Download SDF File 
Download CCD File 
A
ZINC ION
Zn
PTFCDOFLOPIGGS-UHFFFAOYSA-N
 Ligand Interaction
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.7 Å
  • R-Value Free: 0.287 
  • R-Value Work: 0.217 
  • Space Group: P 65 2 2
Unit Cell:
Length (Å)Angle (°)
a = 62.700α = 90.00
b = 62.700β = 90.00
c = 130.700γ = 120.00
Software Package:
Software NamePurpose
AMoREphasing
SCALEPACKdata scaling
X-PLORrefinement
DENZOdata reduction

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History 

Deposition Data

Revision History 

  • Version 1.0: 2001-12-05
    Type: Initial release
  • Version 1.1: 2008-04-27
    Type: Version format compliance
  • Version 1.2: 2011-07-13
    Type: Version format compliance
  • Version 1.3: 2018-04-04
    Type: Data collection