chaetocin   Click here for help

GtoPdb Ligand ID: 8388

Compound class: Natural product
Comment: Chaetocin is a fungal mycotoxin specifically inhibiting the histone methyltransferase (HMT), suppressor of variegation 3-9 homolog 1 (SUV39H1) [2-3]. SUV39H1 is the main enzyme responsible for the trimethylation of lysine 9 in histone H3.
We show the chemical structure here without any stereochemical specification. PubChem records various stereoisomers of this naturally ocurring metabolite.
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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

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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 12
Hydrogen bond donors 4
Rotatable bonds 3
Topological polar surface area 246.96
Molecular weight 696.1
XLogP -1.21
No. Lipinski's rules broken 1
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 OCC12SSC3(N(C1=O)C1Nc4c(C1(C3)C13CC56N(C3Nc3c1cccc3)C(=O)C(SS5)(N(C6=O)C)CO)cccc4)C(=O)N2C
Isomeric SMILES OCC12SSC3(N(C1=O)C1Nc4c(C1(C3)C13CC56N(C3Nc3c1cccc3)C(=O)C(SS5)(N(C6=O)C)CO)cccc4)C(=O)N2C
InChI InChI=1S/C30H28N6O6S4/c1-33-21(39)27-11-25(15-7-3-5-9-17(15)31-19(25)35(27)23(41)29(33,13-37)45-43-27)26-12-28-22(40)34(2)30(14-38,46-44-28)24(42)36(28)20(26)32-18-10-6-4-8-16(18)26/h3-10,19-20,31-32,37-38H,11-14H2,1-2H3
InChI Key PZPPOCZWRGNKIR-UHFFFAOYSA-N
Bioactivity Comments
Chaetocin is reported to inhibit SUV39H1 both directly, and indirectly via a reactive oxygen species (ROS)-dependent mechanism [4]. In acute myeloid leukemia (AML) cells the outcome of chaetocin exposure is death receptor-dependent apoptosis [1].
Selectivity at enzymes
Key to terms and symbols Click column headers to sort
Target Sp. Type Action Value Parameter Concentration range (M) Reference
SUV39H1 histone lysine methyltransferase Primary target of this compound Hs Inhibitor Inhibition 6.1 – 7.0 pIC50 - 2-3
⤷ pIC50 6.1 – 7.0 (IC50 8x10-7 – 1.1x10-7 M) [2-3]