3D7V

Crystal structure of Mcl-1 in complex with an Mcl-1 selective BH3 ligand


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.03 Å
  • R-Value Free: 0.241 
  • R-Value Work: 0.192 
  • R-Value Observed: 0.194 

wwPDB Validation 3D Report Full Report


This is version 1.2 of the entry. See complete history


Literature

A novel BH3 ligand that selectively targets Mcl-1 reveals that apoptosis can proceed without Mcl-1 degradation.

Lee, E.F.Czabotar, P.E.van Delft, M.F.Michalak, E.M.Boyle, M.J.Willis, S.N.Puthalakath, H.Bouillet, P.Colman, P.M.Huang, D.C.S.Fairlie, W.D.

(2008) J Cell Biol 180: 341-355

  • DOI: 10.1083/jcb.200708096
  • Structures With Same Primary Citation

  • PubMed Abstract: 
  • Like Bcl-2, Mcl-1 is an important survival factor for many cancers, its expression contributing to chemoresistance and disease relapse. However, unlike other prosurvival Bcl-2-like proteins, Mcl-1 stability is acutely regulated. For example, the Bcl- ...

    Like Bcl-2, Mcl-1 is an important survival factor for many cancers, its expression contributing to chemoresistance and disease relapse. However, unlike other prosurvival Bcl-2-like proteins, Mcl-1 stability is acutely regulated. For example, the Bcl-2 homology 3 (BH3)-only protein Noxa, which preferentially binds to Mcl-1, also targets it for proteasomal degradation. In this paper, we describe the discovery and characterization of a novel BH3-like ligand derived from Bim, Bim(S)2A, which is highly selective for Mcl-1. Unlike Noxa, Bim(S)2A is unable to trigger Mcl-1 degradation, yet, like Noxa, Bim(S)2A promotes cell killing only when Bcl-x(L) is absent or neutralized. Furthermore, killing by endogenous Bim is not associated with Mcl-1 degradation. Thus, functional inactivation of Mcl-1 does not always require its elimination. Rather, it can be efficiently antagonized by a BH3-like ligand tightly engaging its binding groove, which is confirmed here with a structural study. Our data have important implications for the discovery of compounds that might kill cells whose survival depends on Mcl-1.


    Organizational Affiliation

    The Walter and Eliza Hall Institute of Medical Research, Parkville, Victoria 3050, Australia.



Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
Induced myeloid leukemia cell differentiation protein Mcl-1
A
162Mus musculusHomo sapiens
This entity is chimeric
Mutation(s): 0 
Gene Names: MCL1
Find proteins for P97287 (Mus musculus)
Go to UniProtKB:  P97287
NIH Common Fund Data Resources
IMPC  MGI:101769
Find proteins for Q07820 (Homo sapiens)
Go to UniProtKB:  Q07820
NIH Common Fund Data Resources
PHAROS  Q07820

Find similar proteins by: Sequence  |  Structure

Entity ID: 2
MoleculeChainsSequence LengthOrganismDetails
Bcl-2-like protein 11
B
26N/AMutation(s): 2 
Find proteins for O43521 (Homo sapiens)
Go to UniProtKB:  O43521
NIH Common Fund Data Resources
PHAROS  O43521
Small Molecules
Ligands 1 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
ZN
Query on ZN

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

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.03 Å
  • R-Value Free: 0.241 
  • R-Value Work: 0.192 
  • R-Value Observed: 0.194 
  • Space Group: I 2 2 2
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 51.171α = 90
b = 69.635β = 90
c = 120.654γ = 90
Software Package:
Software NamePurpose
REFMACrefinement
CrystalCleardata collection
HKL-2000data reduction
HKL-2000data scaling
PHASERphasing

Structure Validation

View Full Validation Report



Entry History 

Deposition Data

Revision History 

  • Version 1.0: 2008-06-24
    Type: Initial release
  • Version 1.1: 2011-07-13
    Changes: Version format compliance
  • Version 1.2: 2017-08-23
    Changes: Source and taxonomy