MLKL compound 1   Click here for help

GtoPdb Ligand ID: 9513

Synonyms: compound 23 [PMID: 15990302] | GW806742X
PDB Ligand
Compound class: Synthetic organic
Comment: This small molecule acts as an inhibitor of the activity of mixed lineage kinase domain like pseudokinase MLKL. The compound binds the nucleotide binding site within the MLKL pseudokinase domain and reduces MLKL translocation to the cell membrane, which has the effect of preventing MLKL-driven necroptosis (necroptosis being a form of regulated inflammatory cell death [2]) [1]. This effect is driven by blocking the conformational change in the N-terminal four-helix bundle (4HB) domain of the protein caused by nucleotide binding that is required for membrane translocation and killing activity. This compound was originally identified as a nanomolar potency inhibitor of VEGFR2 tyrosine kinase [3], but note that inhibition of VEGFR2 by another VEGFR2 inhibitor (sorafenib) does not prevent necroptosis, suggesting a direct role for MLKL in this form of cell death, and also demonstrates that targeting the nucleotide binding site of pseudokinases is a novel strategy for modulating signal transduction. In summary, MLKL compound 1 provides a useful tool for investigating necroptosis.
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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 10
Hydrogen bond donors 4
Rotatable bonds 11
Topological polar surface area 159.95
Molecular weight 573.14
XLogP 4.26
No. Lipinski's rules broken 0
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 O=C(Nc1ccc(cc1)OC(F)(F)F)Nc1ccc(cc1)N(c1ccnc(n1)Nc1cccc(c1)S(=O)(=O)N)C
Isomeric SMILES O=C(Nc1ccc(cc1)OC(F)(F)F)Nc1ccc(cc1)N(c1ccnc(n1)Nc1cccc(c1)S(=O)(=O)N)C
InChI InChI=1S/C25H22F3N7O4S/c1-35(22-13-14-30-23(34-22)31-18-3-2-4-21(15-18)40(29,37)38)19-9-5-16(6-10-19)32-24(36)33-17-7-11-20(12-8-17)39-25(26,27)28/h2-15H,1H3,(H2,29,37,38)(H,30,31,34)(H2,32,33,36)
InChI Key SNRUTMWCDZHKKM-UHFFFAOYSA-N
Selectivity at enzymes
Key to terms and symbols Click column headers to sort
Target Sp. Type Action Value Parameter Concentration range (M) Reference
mixed lineage kinase domain like pseudokinase Hs None Binding 5.0 pKd - 1
⤷ pKd 5.0 (Kd 9.3x10-6 M) [1]
Description: Surface plasmon resonance (SPR) assay.
mixed lineage kinase domain like pseudokinase Hs Inhibitor Inhibition 6.3 – 7.0 pIC50 - 1
⤷ pIC50 6.3 – 7.0 (IC50 5x10-7 – 1x10-7 M) [1]
Description: Inhibition of TSQ-induced necroptosis in cellular assays.
Selectivity at catalytic receptors
Key to terms and symbols Click column headers to sort
Target Sp. Type Action Value Parameter Concentration range (M) Reference
kinase insert domain receptor Hs Inhibitor Inhibition 8.7 pIC50 - 3
⤷ pIC50 8.7 (IC50 2x10-9 M) [3]