4J44

Crystal structure of XIAP-BIR2 domain with AIAV bound


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.3 Å
  • R-Value Free: 0.193 
  • R-Value Work: 0.173 

wwPDB Validation 3D Report Full Report


This is version 1.1 of the entry. See complete history

Literature

The structure of XIAP BIR2: understanding the selectivity of the BIR domains.

Lukacs, C.Belunis, C.Crowther, R.Danho, W.Gao, L.Goggin, B.Janson, C.A.Li, S.Remiszewski, S.Schutt, A.Thakur, M.K.Singh, S.K.Swaminathan, S.Pandey, R.Tyagi, R.Gosu, R.Kamath, A.V.Kuglstatter, A.

(2013) Acta Crystallogr.,Sect.D 69: 1717-1725

  • DOI: 10.1107/S0907444913016284
  • Primary Citation of Related Structures:  

  • PubMed Abstract: 
  • XIAP, a member of the inhibitor of apoptosis family of proteins, is a critical regulator of apoptosis. Inhibition of the BIR domain-caspase interaction is a promising approach towards treating cancer. Previous work has been directed towards inhibitin ...

    XIAP, a member of the inhibitor of apoptosis family of proteins, is a critical regulator of apoptosis. Inhibition of the BIR domain-caspase interaction is a promising approach towards treating cancer. Previous work has been directed towards inhibiting the BIR3-caspase-9 interaction, which blocks the intrinsic apoptotic pathway; selectively inhibiting the BIR2-caspase-3 interaction would also block the extrinsic pathway. The BIR2 domain of XIAP has successfully been crystallized; peptides and small-molecule inhibitors can be soaked into these crystals, which diffract to high resolution. Here, the BIR2 apo crystal structure and the structures of five BIR2-tetrapeptide complexes are described. The structural flexibility observed on comparing these structures, along with a comparison with XIAP BIR3, affords an understanding of the structural elements that drive selectivity between BIR2 and BIR3 and which can be used to design BIR2-selective inhibitors.


    Organizational Affiliation

    Discovery Technologies, Hoffmann-La Roche, 340 Kingsland Street, Nutley, NJ 07110, USA.




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
E3 ubiquitin-protein ligase XIAP
A, C
86Homo sapiensMutation(s): 2 
Gene Names: XIAP (API3, BIRC4, IAP3)
EC: 2.3.2.27
Find proteins for P98170 (Homo sapiens)
Go to Gene View: XIAP
Go to UniProtKB:  P98170
Entity ID: 2
MoleculeChainsSequence LengthOrganismDetails
PEPTIDE (ALA-ILE-ALA-VAL)
B
4N/AMutation(s): 0 
Protein Feature View is not available: No corresponding UniProt sequence found.
Small Molecules
Ligands 1 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
ZN
Query on ZN

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

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.3 Å
  • R-Value Free: 0.193 
  • R-Value Work: 0.173 
  • Space Group: I 4 2 2
Unit Cell:
Length (Å)Angle (°)
a = 74.889α = 90.00
b = 74.889β = 90.00
c = 109.022γ = 90.00
Software Package:
Software NamePurpose
SCALAdata scaling
CNXrefinement
REFMACrefinement
XDSdata reduction

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History 

Deposition Data

Revision History 

  • Version 1.0: 2013-09-25
    Type: Initial release
  • Version 1.1: 2019-07-17
    Type: Data collection, Refinement description