5MEV

MCL1 FAB COMPLEX IN COMPLEX WITH COMPOUND 21


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.94 Å
  • R-Value Free: 0.302 
  • R-Value Work: 0.225 
  • R-Value Observed: 0.229 

wwPDB Validation 3D Report Full Report


This is version 1.2 of the entry. See complete history


Literature

Structure Based Design of Non-Natural Peptidic Macrocyclic Mcl-1 Inhibitors

Johannes, J.W.Bates, S.Beigie, C.Belmonte, M.Breen, J.Cao, S.Centrella, P.A.Clark, M.A.Cuozzo, J.W.Dumelin, C.E.Ferguson, A.D.Habeshian, S.Hargreaves, D.Joubran, C.Kazmirski, S.Keefe, A.Lamb, M.L.Lan, H.Li, Y.Ma, H.Mlynarski, S.Packer, M.J.Rawlins, P.Robbins, D.W.Shen, H.Sigel, E.A.Soutter, H.H.Su, N.Trost, D.M.Wang, H.Wickson, K.F.Wu, C.Zhang, Y.Zhao, Q.Zheng, X.Hird, A.

(2017) ACS Med Chem Lett 8: 239-244

  • DOI: 10.1021/acsmedchemlett.6b00464
  • Structures With Same Primary Citation

  • PubMed Abstract: 
  • Mcl-1 is a pro-apoptotic BH3 protein family member similar to Bcl-2 and Bcl-xL. Overexpression of Mcl-1 is often seen in various tumors and allows cancer cells to evade apoptosis. Here we report the discovery and optimization of a series of non-natur ...

    Mcl-1 is a pro-apoptotic BH3 protein family member similar to Bcl-2 and Bcl-xL. Overexpression of Mcl-1 is often seen in various tumors and allows cancer cells to evade apoptosis. Here we report the discovery and optimization of a series of non-natural peptide Mcl-1 inhibitors. Screening of DNA-encoded libraries resulted in hit compound 1 , a 1.5 μM Mcl-1 inhibitor. A subsequent crystal structure demonstrated that compound 1 bound to Mcl-1 in a β-turn conformation, such that the two ends of the peptide were close together. This proximity allowed for the linking of the two ends of the peptide to form a macrocycle. Macrocyclization resulted in an approximately 10-fold improvement in binding potency. Further exploration of a key hydrophobic interaction with Mcl-1 protein and also with the moiety that engages Arg256 led to additional potency improvements. The use of protein-ligand crystal structures and binding kinetics contributed to the design and understanding of the potency gains. Optimized compound 26 is a <3 nM Mcl-1 inhibitor, while inhibiting Bcl-2 at only 5 μM and Bcl-xL at >99 μM, and induces cleaved caspase-3 in MV4-11 cells with an IC 50 of 3 μM after 6 h.


    Organizational Affiliation

    AstraZeneca R&D Boston , 35 Gatehouse Drive, Waltham, Massachusetts 02451, United States.



Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
Induced myeloid leukemia cell differentiation protein Mcl-1 homolog,Induced myeloid leukemia cell differentiation protein Mcl-1A162Mus musculusHomo sapiens
This entity is chimeric
Mutation(s): 0 
Gene Names: MCL1
Find proteins for P97287 (Mus musculus)
Explore P97287 
Go to UniProtKB:  P97287
NIH Common Fund Data Resources
IMPC  MGI:101769
Find proteins for Q07820 (Homo sapiens)
Explore Q07820 
Go to UniProtKB:  Q07820
NIH Common Fund Data Resources
PHAROS  Q07820
Protein Feature View
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  • Reference Sequence

Find similar proteins by: Sequence  |  Structure

Entity ID: 2
MoleculeChainsSequence LengthOrganismDetails
Fab Heavy ChainH230Homo sapiensMutation(s): 0 
Protein Feature View
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  • Reference Sequence

Find similar proteins by: Sequence  |  Structure

Entity ID: 3
MoleculeChainsSequence LengthOrganismDetails
Fab Light ChainL226Homo sapiensMutation(s): 0 
Protein Feature View
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  • Reference Sequence
Small Molecules
Ligands 1 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
7LW
Query on 7LW

Download CCD File 
A
(5~{R},13~{S},17~{S})-5-[(3,4-dichlorophenyl)methyl]-8-methyl-13-[(4-methylsulfonylphenyl)methyl]-1,4,8,12,16-pentazatricyclo[15.8.1.0^{20,25}]hexacosa-20,22,24-triene-3,7,15,26-tetrone
C37 H43 Cl2 N5 O6 S
FBRYDBXOEZYXPV-NGKQEFFVSA-N
 Ligand Interaction
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.94 Å
  • R-Value Free: 0.302 
  • R-Value Work: 0.225 
  • R-Value Observed: 0.229 
  • Space Group: C 1 2 1
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 166.514α = 90
b = 39.705β = 125.74
c = 103.515γ = 90
Software Package:
Software NamePurpose
REFMACrefinement
MOSFLMdata reduction
SCALAdata scaling
PHASERphasing

Structure Validation

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Entry History 

Deposition Data

  • Deposited Date: 2016-11-16 
  • Released Date: 2017-01-18 
  • Deposition Author(s): Hargreaves, D.

Revision History 

  • Version 1.0: 2017-01-18
    Type: Initial release
  • Version 1.1: 2017-02-22
    Changes: Database references
  • Version 1.2: 2017-03-08
    Changes: Database references