A947   Click here for help

GtoPdb Ligand ID: 12308

Compound class: Synthetic organic
Comment: A947 is a selective degrader of SMARCA2 [1]. It is a PROTAC class molecule that targets SMARCA2 protein for degradation via ligation with the VHL E3 ubiquitin ligase. Its target protein binding component interacts with the bromodomains of SMARCA2 and -4 and the 5th bromodomain of polybromo 1 (PBRM1). A947 was developed by Arvinas/Genentech to assess the utility of targeting SMARCA2 in SMARCA4-mutated cancers that become dependent on the SMARCA2 paralog for survival.
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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 4
Rotatable bonds 19
Topological polar surface area 253.14
Molecular weight 1120.57
XLogP 8.76
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]1CN([C@@H](C1)C(=O)N[C@H](c1ccc(cc1)c1scnc1C)C)C(=O)[C@@H](c1onc(c1)N1CCC(CC1)CN1CCC(CC1)OC1CC(C1)Oc1nccc(c1)N1C2CCC1CN(C2)c1cc(nnc1N)c1ccccc1O)C(C)C
Isomeric SMILES Cc1c(scn1)c1ccc(cc1)[C@H](C)NC(=O)[C@@H]1C[C@H](CN1C(=O)[C@@H](c1cc(no1)N1CCC(CC1)CN1CCC(CC1)OC1CC(C1)Oc1nccc(c1)N1C2CCC1CN(C2)c1cc(nnc1N)c1ccccc1O)C(C)C)O
InChI InChI=1S/C61H76N12O7S/c1-36(2)57(61(77)72-34-45(74)26-52(72)60(76)65-37(3)40-9-11-41(12-10-40)58-38(4)64-35-81-58)54-30-55(68-80-54)70-23-16-39(17-24-70)31-69-21-18-46(19-22-69)78-47-27-48(28-47)79-56-25-42(15-20-63-56)73-43-13-14-44(73)33-71(32-43)51-29-50(66-67-59(51)62)49-7-5-6-8-53(49)75/h5-12,15,20,25,29-30,35-37,39,43-48,52,57,74-75H,13-14,16-19,21-24,26-28,31-34H2,1-4H3,(H2,62,67)(H,65,76)/t37-,43?,44?,45+,47?,48?,52-,57+/m0/s1
InChI Key QQVCUSPUMMUFTD-NCXNEFEISA-N
Bioactivity Comments
The DC50 for A947-mediated SMARCA2 degradation in SW1573 cells is 39 pM, and a maximum protein degradation of 96% is achieved at 10 nM [1]. The DC50 for SMARCA4 is 1.1 nM in the same cells.
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
SWI/SNF related, matrix associated, actin dependent regulator of chromatin, subfamily a, member 4 Hs None Binding 7.2 pKd - 1
⤷ pKd 7.2 (Kd 6.5x10-8 M) [1]
Description: Binding affinity for SMARCA4 bromodomain.
SWI/SNF related, matrix associated, actin dependent regulator of chromatin, subfamily a, member 2 Hs None Binding 7.0 pKd - 1
⤷ pKd 7.0 (Kd 9.3x10-8 M) [1]
Description: Binding affinity for SMARCA2 bromodomain.