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Title 

Mixed-type inhibition of tyrosinase from agaricus bisporus by terephthalic acid: Computational simulations and kinetics

Authors 

S J YinY X SiY F ChenG Y QianZ R LuS OhJ LeeSanghyuk LeeJ M YangD Y LeeY D Park

Publisher 

Springer Verlag (Germany)

Issue Date 

2011

Citation 

Protein Journal, vol. 30, no. 4, pp. 273-280

Keywords 

Docking simulationHydroxyl groupInhibition kineticsTerephthalic acidTyrosinase

Abstract 

Tyrosinase inhibition studies are needed due to the agricultural and medicinal applications. For probing effective inhibitors of tyrosinase, a combination of computational prediction and enzymatic assay via kinetics were important. We predicted the 3D structure of tyrosinase from Agaricus bisporus, used a docking algorithm to simulate binding between tyrosinase and terephthalic acid (TPA) and studied the reversible inhibition of tyrosinase by TPA. Simulation was successful (binding energies for Autodock4 = -1.54 and Fred2.0 = -3.19 kcal/mol), suggesting that TPA interacts with histidine residues that are known to bind with copper ions at the active site. TPA inhibited tyrosinase in a mixed-type manner with a K i = 11.01 ± 2.12 mM. Measurements of intrinsic and ANS-binding fluorescences showed that TPA induced no changes in tertiary structure. The present study suggested that the strategy of predicting tyrosinase inhibition based on hydroxyl groups and orientation may prove useful for screening of potential tyrosinase inhibitors.

ISSN 

1572-3887

Link 

http://dx.doi.org/10.1007/s10930-011-9329-x

Appears in Collections

1. Journal Articles > Journal Articles

Registered Date

2019-05-02


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