4ZBF image
Entry Detail
PDB ID:
4ZBF
Title:
Mcl-1 complexed with small molecules
Biological Source:
Source Organism:
Host Organism:
PDB Version:
Deposition Date:
2015-04-14
Release Date:
2015-04-29
Method Details:
Experimental Method:
Resolution:
2.20 Å
R-Value Free:
0.23
R-Value Work:
0.18
R-Value Observed:
0.18
Space Group:
P 1 21 1
Macromolecular Entities
Polymer Type:polypeptide(L)
Description:Induced myeloid leukemia cell differentiation protein Mcl-1
Chain IDs:A, B, C, D, E, F, G, H, I, J, K, L
Chain Length:157
Number of Molecules:12
Biological Source:Homo sapiens
Ligand Molecules
Primary Citation
Discovery of tricyclic indoles that potently inhibit mcl-1 using fragment-based methods and structure-based design.
J.Med.Chem. 58 3794 3805 (2015)
PMID: 25844895 DOI: 10.1021/jm501984f

Abstact

Myeloid cell leukemia-1 (Mcl-1) is an antiapoptotic member of the Bcl-2 family of proteins that is overexpressed and amplified in many cancers. Overexpression of Mcl-1 allows cancer cells to evade apoptosis and contributes to the resistance of cancer cells to be effectively treated with various chemotherapies. From an NMR-based screen of a large fragment library, several distinct chemical scaffolds that bind to Mcl-1 were discovered. Here, we describe the discovery of potent tricyclic 2-indole carboxylic acid inhibitors that exhibit single digit nanomolar binding affinity to Mcl-1 and greater than 1700-fold selectivity over Bcl-xL and greater than 100-fold selectivity over Bcl-2. X-ray structures of these compounds when complexed to Mcl-1 provide detailed information on how these small-molecules bind to the target, which was used to guide compound optimization.

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Primary Citation of related structures