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BioAssay: AID 648188

Binding affinity to COX2 by surface plasmon resonance spectroscopy

A series of fluorobenzoylated di- and tripeptides as potential leads for the development of molecular probes for imaging of COX-2 expression was prepared according to standard Fmoc-based solid-phase peptide synthesis. All peptides were assessed for their COX-2 inhibitory potency and selectivity profile in a fluorescence-based COX binding assay. Within the series of 15 peptides tested, more ..
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Active(1)
 
 
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AID: 648188
Data Source: ChEMBL (805636)
BioAssay Type: Confirmatory, Concentration-Response Relationship Observed
Depositor Category: Literature, Extracted
BioAssay Version:
Deposit Date: 2012-09-09
Modify Date: 2014-08-24

Data Table ( Complete ):           View Active Data    View All Data
BioActive Compound: 1
Description:
Title: Synthesis and evaluation of fluorobenzoylated di- and tripeptides as inhibitors of cyclooxygenase-2 (COX-2).

Abstract: A series of fluorobenzoylated di- and tripeptides as potential leads for the development of molecular probes for imaging of COX-2 expression was prepared according to standard Fmoc-based solid-phase peptide synthesis. All peptides were assessed for their COX-2 inhibitory potency and selectivity profile in a fluorescence-based COX binding assay. Within the series of 15 peptides tested, cysteine-containing peptides numbered 7, 8, 11 and 12, respectively, were the most potent COX-2 inhibitors possessing IC(50) values ranging from 5 to 85 muM. Fluorobenzoylated tripeptides 7 and 8 displayed some COX-2 selectivity (COX-2 selectivity index 2.1 and 1.6), whereas fluorobenzoylated dipeptides 11 and 12 were shown not to be COX-2 selective. Fluorbenzoylated tripeptide FB-Phe-Cys-Ser-OH was further used in molecular modeling docking studies to determine the binding mode within the active site of the COX-2 enzyme.
(PMID: 22386983)
Comment
Compounds with activity <= 50uM or explicitly reported as active by ChEMBL are flagged as active in this PubChem assay presentation.

Putative Target:

ChEMBL Target ID: 126
Target Type: SINGLE PROTEIN
Pref Name: Cyclooxygenase-2
Synonyms: COX-2;Cyclooxygenase-2;PGH synthase 2;PGHS-2;PHS II;Prostaglandin G/H synthase 2;Prostaglandin H2 synthase 2;Prostaglandin-endoperoxide synthase 2;
Gene Name: COX2;PTGS2;
Protein Accession: P35354;
Protein GI: 3915797;
Organism: Homo sapiens
Tax ID: 9606
Target Classification: enzyme reductase
Confidence: Homologous single protein target assigned
Relationship Type: Homologous protein target assigned
Categorized Comment - additional comments and annotations
From BioAssay Depositor:
Assay Type: Binding
Assay Data Source: Scientific Literature
Result Definitions
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TIDNameDescriptionHistogramTypeUnit
OutcomeThe BioAssay activity outcomeOutcome
1Kd*Kd PubChem standard valueFloatμM
3BEIBinding Efficiency Index(nM)Float
2SEISurface Efficiency Index(nM)Float
4LELigand EfficiencyFloat
5LLELipophilic Ligand EfficiencyFloat
6Kd activity commentKd activity commentString
7Kd standard flagKd standard flagInteger
8Kd qualifierKd qualifierString
9Kd published valueKd published valueFloatnM
10Kd standard valueKd standard valueFloatnM

* Activity Concentration.

Data Table (Concise)
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