Structure of an ML-IAP/XIAP chimera bound to a peptidomimetic

Experimental Data Snapshot

  • Resolution: 1.70 Å
  • R-Value Free: 0.193 
  • R-Value Work: 0.170 
  • R-Value Observed: 0.171 

wwPDB Validation   3D Report Full Report

This is version 1.5 of the entry. See complete history


Antagonists of inhibitor of apoptosis proteins based on thiazole amide isosteres.

Cohen, F.Koehler, M.F.Bergeron, P.Elliott, L.O.Flygare, J.A.Franklin, M.C.Gazzard, L.Keteltas, S.F.Lau, K.Ly, C.Q.Tsui, V.Fairbrother, W.J.

(2010) Bioorg Med Chem Lett 20: 2229-2233

  • DOI: https://doi.org/10.1016/j.bmcl.2010.02.021
  • Primary Citation of Related Structures:  
    3GT9, 3GTA

  • PubMed Abstract: 

    A series of IAP antagonists based on thiazole or benzothiazole amide isosteres was designed and synthesized. These compounds were tested for binding to the XIAP-BIR3 and ML-IAP BIR using a fluorescence polarization assay. The most potent of these compounds, 19a and 33b, were found to have K(i)'s of 20-30 nM against ML-IAP and 50-60 nM against XIAP-BIR3.

  • Organizational Affiliation

    Department of Discovery Chemistry, Genentech, Inc. 1 DNA Way, South San Francisco, CA 94080, USA. fcohen@gene.com

Find similar proteins by:  (by identity cutoff)  |  3D Structure
Entity ID: 1
MoleculeChains Sequence LengthOrganismDetailsImage
Baculoviral IAP repeat-containing 7
A, B
133Homo sapiensMutation(s): 11 
Gene Names: BIRC7
UniProt & NIH Common Fund Data Resources
Find proteins for Q96CA5 (Homo sapiens)
Explore Q96CA5 
Go to UniProtKB:  Q96CA5
GTEx:  ENSG00000101197 
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt GroupQ96CA5
Sequence Annotations
  • Reference Sequence
Small Molecules
Binding Affinity Annotations 
IDSourceBinding Affinity
516 PDBBind:  3GT9 Ki: 1.10e+5 (nM) from 1 assay(s)
BindingDB:  3GT9 Ki: 1.10e+5 (nM) from 1 assay(s)
Experimental Data & Validation

Experimental Data

  • Resolution: 1.70 Å
  • R-Value Free: 0.193 
  • R-Value Work: 0.170 
  • R-Value Observed: 0.171 
  • Space Group: P 41 21 2
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 87.531α = 90
b = 87.531β = 90
c = 73.464γ = 90
Software Package:
Software NamePurpose
MAR345data collection
DENZOdata reduction
SCALEPACKdata scaling

Structure Validation

View Full Validation Report

Entry History 

Deposition Data

Revision History  (Full details and data files)

  • Version 1.0: 2010-03-09
    Type: Initial release
  • Version 1.1: 2011-07-13
    Changes: Advisory, Version format compliance
  • Version 1.2: 2017-11-01
    Changes: Refinement description
  • Version 1.3: 2021-10-13
    Changes: Database references, Derived calculations
  • Version 1.4: 2024-02-21
    Changes: Data collection
  • Version 1.5: 2024-04-03
    Changes: Refinement description