MS40   Click here for help

GtoPdb Ligand ID: 12000

Compound class: Synthetic organic
Comment: MS40 is a cereblon (CRBN)-based proteolysis targeting chimera (PROTAC) degrader of the onco-target WD repeat domain 5 (WDR5) [1]. WDR5 is an integral component of the MLL/KMT2A lysine methyltransferase protein complex. The WDR5-binding component of MS40 is the selective inhibitor OICR-9429, and the CRBN-targeting moiety is the immunomodulatory drug pomalidomide. MS40 promotes degradation of WDR5 and the pomalidomide transcription factor neo-substrates IKZF1 and IKZF3.
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Ligand Activity Visualisation Charts

These are box plot that provide a unique visualisation, summarising all the activity data for a ligand taken from ChEMBL and GtoPdb across multiple targets and species. Click on a plot to see the median, interquartile range, low and high data points. A value of zero indicates that no data are available. A separate chart is created for each target, and where possible the algorithm tries to merge ChEMBL and GtoPdb targets by matching them on name and UniProt accession, for each available species. However, please note that inconsistency in naming of targets may lead to data for the same target being reported across multiple charts.

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View interactive charts of activity data across species
2D Structure
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2D Structure

An image of the ligand's 2D structure. For small molecules with SMILES these are drawn using the NCI/CADD Chemical Identifier Resolver. Click on the image to access the chemical structure search tool with the ligand pre-loaded in the structure editor. For other types of ligands, e.g. longer nucleotides and peptides, a manually drawn representation of the molecule may be provided.

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Physico-chemical Properties
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Physico-chemical Properties

Calculated molecular properties are available for small molecules and natural products (not peptides). Properties were generated using the CDK toolkit. All properties were selected to enable the prediction of the Lipinski Rule-of-Five profile or ‘druglikeness’ for each ligand. For more info on each category see the help pages.

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Hydrogen bond acceptors 15
Hydrogen bond donors 5
Rotatable bonds 22
Topological polar surface area 199.6
Molecular weight 994.47
XLogP 5.68
No. Lipinski's rules broken 3
SMILES / InChI / InChIKey
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SMILES / InChI / InChIKey

SMILES (Simplified Molecular Input Line Entry Specification) A specification for unambiguously describing the structure of chemical molecules using short ASCII strings. Canonical SMILES specify a unique representation of the 2D structure without chiral or isotopic specifications. Isomeric SMILES include chiral specification and isotopes.

Standard InChI (IUPAC International Chemical Identifier) and InChIKey InChI is a non-proprietary, standard, textual identifier for chemical substances designed to facilitate linking of information and database searching. An InChIKey is a simplified version of a full InChI, designed for easier web searching.

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Canonical SMILES CN1CCN(CC1)c1ccc(cc1NC(=O)c1c[nH]c(=O)cc1C(F)(F)F)c1cccc(c1)CN1CCN(CC1)CCNC(=O)CCCCCCCNc1cccc2c1C(=O)N(C2=O)C1CCC(=O)NC1=O
Isomeric SMILES CN1CCN(CC1)c1ccc(cc1NC(=O)c1c[nH]c(=O)cc1C(F)(F)F)c1cc(CN2CCN(CCNC(=O)CCCCCCCNc3c4C(=O)N(C5CCC(=O)NC5=O)C(=O)c4ccc3)CC2)ccc1
InChI InChI=1S/C52H61F3N10O7/c1-61-21-27-64(28-22-61)42-15-14-36(30-41(42)59-48(69)38-32-58-46(68)31-39(38)52(53,54)55)35-10-7-9-34(29-35)33-63-25-23-62(24-26-63)20-19-57-44(66)13-5-3-2-4-6-18-56-40-12-8-11-37-47(40)51(72)65(50(37)71)43-16-17-45(67)60-49(43)70/h7-12,14-15,29-32,43,56H,2-6,13,16-28,33H2,1H3,(H,57,66)(H,58,68)(H,59,69)(H,60,67,70)
InChI Key STBAQMSNPQNEBZ-UHFFFAOYSA-N
Bioactivity Comments
MS40 suppresses proliferation of patient-derived primary leukemia patient cells in vitro and is active in a xenograft model [1].
Selectivity at enzymes
Key to terms and symbols Click column headers to sort
Target Sp. Type Action Value Parameter Concentration range (M) Reference
cereblon Hs None Binding 4.8 pKd - 1
⤷ pKd 4.8 (Kd 1.48x10-5 M) [1]
Description: Binding affinity for CRBN’s C-terminal thalidomide binding domain
Selectivity at other protein targets
Key to terms and symbols Click column headers to sort
Target Sp. Type Action Value Parameter Concentration range (M) Reference
WD repeat domain 5 Hs Inhibitor Binding 6.9 pKd - 1
⤷ pKd 6.9 (Kd 1.25x10-7 M) [1]