milciclib   Click here for help

GtoPdb Ligand ID: 7938

Synonyms: PHA 848125 | PHA-848125 | PHA848125
PDB Ligand
Compound class: Synthetic organic
Comment: Milciclib is an orally bioavailable inhibitor of cyclin-dependent kinases (CDKs) and neurotrophic tyrosine kinase, receptor, type 1 (aka TRKA) [1]. It is compound 28 in Brasca et al (2009) [1]. Milciclib exhibits a notable level of promiscuity across the CDKs [2].
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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 8
Hydrogen bond donors 2
Rotatable bonds 5
Topological polar surface area 91.21
Molecular weight 460.27
XLogP 2.48
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 CNC(=O)c1nn(c2c1C(C)(C)Cc1c2nc(nc1)Nc1ccc(cc1)N1CCN(CC1)C)C
Isomeric SMILES CNC(=O)c1nn(c2c1C(C)(C)Cc1c2nc(nc1)Nc1ccc(cc1)N1CCN(CC1)C)C
InChI InChI=1S/C25H32N8O/c1-25(2)14-16-15-27-24(29-20(16)22-19(25)21(23(34)26-3)30-32(22)5)28-17-6-8-18(9-7-17)33-12-10-31(4)11-13-33/h6-9,15H,10-14H2,1-5H3,(H,26,34)(H,27,28,29)
InChI Key RXZMYLDMFYNEIM-UHFFFAOYSA-N
Bioactivity Comments
Inhibition of CDK4 by low dose milciclib has been confirmed by its ability to arrest HCT-116 colon carcinoma cells in the G1 phase [2]. Higher doses milciclib lead to G2/M arrest (most likely via inhibition of CDK2).
Selectivity at enzymes
Key to terms and symbols Click column headers to sort
Target Sp. Type Action Value Parameter Concentration range (M) Reference
cyclin dependent kinase 2 Hs Inhibitor Inhibition 6.2 – 7.3 pIC50 - 1-2
⤷ pIC50 7.3 (IC50 4.5x10-8 M) [1]
Description: CDK2/cyclin A complex
pIC50 7.0 (IC50 1.09x10-7 M) [2]
Description: In vitro inhibition of CDK2/cyclin A.
pIC50 6.2 (IC50 5.9x10-7 M) [2]
Description: In vitro inhibition of CDK2/cyclin E.
cyclin dependent kinase 4 Hs Inhibitor Inhibition 6.7 – 6.8 pIC50 - 1-2
⤷ pIC50 6.8 (IC50 1.6x10-7 M) [1]
Description: CDK4/cyclin D1 complex
pIC50 6.7 (IC50 2.2x10-7 M) [2]
Description: In vitro inhibition of CDK4/cyclin D.
cyclin dependent kinase 7 Hs Inhibitor Inhibition 6.6 – 6.8 pIC50 - 1-2
⤷ pIC50 6.8 (IC50 1.5x10-7 M) [1]
Description: CDK7/cyclin H complex
pIC50 6.6 (IC50 2.7x10-7 M) [2]
Description: In vitro inhibition of CDK7/cyclin H.
cyclin dependent kinase 5 Hs Inhibitor Inhibition 6.4 pIC50 - 2
⤷ pIC50 6.4 (IC50 3.83x10-7 M) [2]
Description: In vitro inhibition of CDK5/p25.
cyclin dependent kinase 1 Hs Inhibitor Inhibition 5.9 pIC50 - 2
⤷ pIC50 5.9 (IC50 1.2x10-6 M) [2]
Description: In vitro inhibition of CDK1/cyclin B.
cyclin dependent kinase 9 Hs Inhibitor Inhibition 5.1 pIC50 - 2
⤷ pIC50 5.1 (IC50 7.7x10-6 M) [2]
Description: In vitro inhibition of CDK9/cyclin T.
Selectivity at catalytic receptors
Key to terms and symbols Click column headers to sort
Target Sp. Type Action Value Parameter Concentration range (M) Reference
neurotrophic receptor tyrosine kinase 1 Primary target of this compound Hs Inhibitor Inhibition 7.3 pIC50 - 1
⤷ pIC50 7.3 (IC50 5.3x10-8 M) [1]