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BioAssay: AID 550024

Inhibition of human recombinant calmodulin assessed as inhibition of calmodulin-sensitive cAMP phosphodiesterase activation after 15 mins by spectrophotometric analysis

In our search for potential antihypertensive agents, a series of structurally-related flavonoids was screened. Ex vivo and in vitro biological evaluations indicated that compounds 1-7 displayed an important vasorelaxant effect on the endothelium-intact (E(+)) and -denuded (E(-)) aortic rings test. Their in vitro anti-calmodulin (CaM) properties were determined by means of the inhibitory effect on more ..
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 Tested Compounds
 Tested Compounds
All(9)
 
 
Active(5)
 
 
Inconclusive(2)
 
 
Unspecified(2)
 
 
 Tested Substances
 Tested Substances
All(9)
 
 
Active(5)
 
 
Inconclusive(2)
 
 
Unspecified(2)
 
 
AID: 550024
Data Source: ChEMBL (698552)
BioAssay Type: Confirmatory, Concentration-Response Relationship Observed
Depositor Category: Literature, Extracted
BioAssay Version:
Deposit Date: 2011-09-18
Modify Date: 2014-08-24

Data Table ( Complete ):           View Active Data    View All Data
Target
Sequence: RecName: Full=Calmodulin; Short=CaM
Description ..   
Protein Family: EFh
Comment ..   

Gene:CALM3     Related Protein 3D Structures     More BioActivity Data..
BioActive Compounds: 5
Description:
Title: Vasorelaxant effect of flavonoids through calmodulin inhibition: Ex vivo, in vitro, and in silico approaches.

Abstract: In our search for potential antihypertensive agents, a series of structurally-related flavonoids was screened. Ex vivo and in vitro biological evaluations indicated that compounds 1-7 displayed an important vasorelaxant effect on the endothelium-intact (E(+)) and -denuded (E(-)) aortic rings test. Their in vitro anti-calmodulin (CaM) properties were determined by means of the inhibitory effect on the activation of the calmodulin-sensitive cAMP phosphodiesterase (PDE1) assay. Molecular modeling experiments were also performed in order to explore the probable binding site of 1-7 with CaM, and the results indicated that they could bind to the protein in the same pocket as trifluoperazine (TFP), a well-known CaM inhibitor.
(PMID: 21129983)
Comment
Compounds with activity <= 50uM or explicitly reported as active by ChEMBL are flagged as active in this PubChem assay presentation.

Categorized Comment - additional comments and annotations
From BioAssay Depositor:
Assay Type: Binding
Target Type: Target is a single protein chain
Assay Data Source: Scientific Literature
Result Definitions
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TIDNameDescriptionHistogramTypeUnit
OutcomeThe BioAssay activity outcomeOutcome
1IC50*IC50 PubChem standard valueFloatμM
3BEIBinding Efficiency Index(nM)Float
2SEISurface Efficiency Index(nM)Float
4LELigand EfficiencyFloat
5LLELipophilic Ligand EfficiencyFloat
6IC50 activity commentIC50 activity commentString
7IC50 standard flagIC50 standard flagInteger
8IC50 qualifierIC50 qualifierString
9IC50 published valueIC50 published valueFloatμM
10IC50 standard valueIC50 standard valueFloatnM
11IC50 data validityIC50 data validityString
12Inhibition activity commentInhibition activity commentString
13Inhibition standard flagInhibition standard flagInteger
14Inhibition qualifierInhibition qualifierString
15Inhibition published valueInhibition published valueFloat
16Inhibition standard valueInhibition standard valueFloat
17Inhibition data validityInhibition data validityString

* Activity Concentration.

Data Table (Concise)
Data Table ( Complete ):     View Active Data    View All Data
Classification
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