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BioAssay: AID 626570

Inhibition of mushroom tyrosinase activity using L-tyrosine as substrate by spectrometric analysis

Effect of a series of 1-phenylthioureas 1a-k and 1,3-disubstituted thioureas 2a-k were evaluated against melanin formation in melanoma B16 cell line and mushroom tyrosinase. Inhibitory activity of tyrosinase of 1-phenylthioureas 1a-k is parallel to their melanogenic inhibition. Thus, the melanogenic inhibition in melanoma B16 cells of 1-phenylthioureas could be the result of inhibition of more ..
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 Tested Compounds
 Tested Compounds
All(25)
 
 
Active(8)
 
 
Unspecified(17)
 
 
 Tested Substances
 Tested Substances
All(25)
 
 
Active(8)
 
 
Unspecified(17)
 
 
AID: 626570
Data Source: ChEMBL (776076)
BioAssay Type: Confirmatory, Concentration-Response Relationship Observed
Depositor Category: Literature, Extracted
BioAssay Version:
Deposit Date: 2012-09-09
Modify Date: 2014-05-26

Data Table ( Complete ):           Active    All
Target
Sequence: RecName: Full=Polyphenol oxidase 2; Short=PPO2; Short=Phenolase 2; AltName: Full=Cresolase 2; AltName: Full=Tyrosinase 2; Flags: Precursor
Description ..   
Protein Family: Common central domain of tyrosinase
Comment ..   

Related Protein 3D Structures     More BioActivity Data..
BioActive Compounds: 8
Description:
Title: Structural requirement of phenylthiourea analogs for their inhibitory activity of melanogenesis and tyrosinase.

Abstract: Effect of a series of 1-phenylthioureas 1a-k and 1,3-disubstituted thioureas 2a-k were evaluated against melanin formation in melanoma B16 cell line and mushroom tyrosinase. Inhibitory activity of tyrosinase of 1-phenylthioureas 1a-k is parallel to their melanogenic inhibition. Thus, the melanogenic inhibition in melanoma B16 cells of 1-phenylthioureas could be the result of inhibition of tyrosinase. However, 1,3-diaryl or 1-phenyl-3-alkylthioureas, 2a-k, appears as melanogenic inhibitor without inhibition of tyrosinase. The molecular docking study of 1e and 2b to binding pocket of tyrosinase provided convincing explanation regarding the necessity of direct connection of planar phenyl to thiourea unit without N'-substitution of phenylthioureas 1 as tyrosinase inhibitor and 2 as non-tyrosinase inhibitor.
(PMID: 21978680)
Comment
Compounds with activity <= 50uM or explicitly reported as active by ChEMBL are flagged as active in this PubChem assay presentation.

Categorized Comment
Assay Type: Binding

Assay Data Source: Scientific Literature

BAO: Assay Format: biochemical format

Target Type: Target is a single protein chain

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 binding domainsIC50 binding domainsString

* Activity Concentration.

Data Table (Concise)
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