TBK1 PROTAC 3i   Click here for help

GtoPdb Ligand ID: 11661

Synonyms: compound 3i [PMID: 28692295]
Compound class: Synthetic organic
Comment: This compound (3i) is a TANK-binding kinase 1 (TBK1) PROTAC degrader [1]. The TBK1 inhibitor portion of the molecule binds the kinase and the Von Hippel-Lindau (VHL) binding portion of the molecule recruits an E3 ubiquitin ligase to the bound kinase and this leads to proteasomal degradation of the kinase protein. This PROTAC was used to evaluate TBK1 as a target in mutant KRAS cancer cells. 3i does not promote degradation of closely related IKKε which has 65% sequence homology with TBK1.
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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 17
Hydrogen bond donors 5
Rotatable bonds 35
Topological polar surface area 246.94
Molecular weight 1091.45
XLogP 5.61
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 O[C@@H]1C[C@H](N(C1)C(=O)[C@H](C(C)(C)C)NC(=O)COCCCOCCCCOCCCOc1ccc(cc1)Nc1ncc(c(n1)NCCCN(C(=O)C1CCC1)C)Br)C(=O)NCc1ccc(cc1)c1scnc1C
Isomeric SMILES Cc1c(scn1)c1ccc(cc1)CNC(=O)[C@@H]1C[C@H](CN1C(=O)[C@H](C(C)(C)C)NC(=O)COCCCOCCCCOCCCOc1ccc(cc1)Nc1ncc(c(n1)NCCCN(C)C(=O)C1CCC1)Br)O
InChI InChI=1S/C53H74BrN9O9S/c1-36-46(73-35-58-36)38-16-14-37(15-17-38)31-56-49(66)44-30-41(64)33-63(44)51(68)47(53(2,3)4)60-45(65)34-71-28-10-26-69-24-6-7-25-70-27-11-29-72-42-20-18-40(19-21-42)59-52-57-32-43(54)48(61-52)55-22-9-23-62(5)50(67)39-12-8-13-39/h14-21,32,35,39,41,44,47,64H,6-13,22-31,33-34H2,1-5H3,(H,56,66)(H,60,65)(H2,55,57,59,61)/t41-,44+,47-/m1/s1
InChI Key QMGHHBHPDDAGGO-IIWOMYBWSA-N
Bioactivity Comments
The TBK1 DC50 for this compound is 12 nM, and it achieves a maximum reduction in TBK1 protein of 96% [1].
Selectivity at enzymes
Key to terms and symbols Click column headers to sort
Target Sp. Type Action Value Parameter Concentration range (M) Reference
TANK binding kinase 1 Hs Inhibitor Inhibition 8.9 pKd - 1
⤷ pKd 8.9 (Kd 1.3x10-9 M) [1]
Description: BInding affinity for the TBK1 binding moeity of the PROTAC