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BioAssay: AID 639337

Inhibition of human recombinant His-tagged PCAF HAT domain expressed in Escherichia coli BL21(DE3) cells using [14C]Ac-AoA and histone H4 as substrate at 200 uM after 5 mins by scintillation counting

Histone acetyltransferases are important enzymes that regulate various cellular functions, such as epigenetic control of DNA transcription. Development of HAT inhibitors with high selectivity and potency will provide powerful mechanistic tools for the elucidation of the biological functions of HATs and may also have pharmacological value for potential new therapies. In this work, analogs of the more ..
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 Tested Compounds
 Tested Compounds
All(7)
 
 
Unspecified(7)
 
 
 Tested Substances
 Tested Substances
All(7)
 
 
Unspecified(7)
 
 
 Related BioAssays
 Related BioAssays
AID: 639337
Data Source: ChEMBL (796785)
Depositor Category: Literature, Extracted
BioAssay Version:
Deposit Date: 2012-09-09
Modify Date: 2013-11-17

Data Table ( Complete ):           All
Target
Sequence: RecName: Full=Histone acetyltransferase KAT2B; AltName: Full=Histone acetyltransferase PCAF; Short=Histone acetylase PCAF; AltName: Full=Lysine acetyltransferase 2B; AltName: Full=P300/CBP-associated factor; Short=P/CAF
Description ..   
Protein Family: PCAF (P300/CBP-associated factor) N-terminal domain
Comment ..   

Gene:KAT2B          More BioActivity Data..
Tested Compounds:
Description:
Title: 6-alkylsalicylates are selective Tip60 inhibitors and target the acetyl-CoA binding site.

Abstract: Histone acetyltransferases are important enzymes that regulate various cellular functions, such as epigenetic control of DNA transcription. Development of HAT inhibitors with high selectivity and potency will provide powerful mechanistic tools for the elucidation of the biological functions of HATs and may also have pharmacological value for potential new therapies. In this work, analogs of the known HAT inhibitor anacardic acid were synthesized and evaluated for inhibition of HAT activity. Biochemical assays revealed novel anacardic acid analogs that inhibited the human recombinant enzyme Tip60 selectively compared to PCAF and p300. Enzyme kinetics studies demonstrated that inhibition of Tip60 by one such novel anacardic acid derive, 20, was essentially competitive with Ac-CoA and non-competitive with the histone substrate. In addition, these HAT inhibitors effectively inhibited acetyltransferase activity of nuclear extracts on the histone H3 and H4 at micromolar concentrations.
(PMID: 22100137)
Categorized Comment
ChEMBL Assay Type: Binding

ChEMBL Assay Data Source: Scientific Literature

ChEMBL Assay Cell Type: H4

ChEMBL Target ID: 100875

ChEMBL Target Type: Target is a single protein chain

Result Definitions
TIDNameDescriptionHistogramTypeUnit
OutcomeThe BioAssay activity outcomeOutcome
1Inhibition activity commentInhibition activity commentString
2Inhibition standard flagInhibition standard flagInteger
3Inhibition qualifierInhibition qualifierString
4Inhibition published valueInhibition published valueFloat%
5Inhibition standard valueInhibition standard valueFloat%

Data Table (Concise)
Classification
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