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Reference type: Journal
Authors: Huang X, Yin YZ, Liu Y, Bai XL, Zhang ZM, Xu JY, Shen JC, Liu JQ
Article Title: Incorporation of glutathione peroxidase active site into polymer based on imprinting strategy.
Publication date: 2009
Journal: Biosensors and Bioelectronics
Volume: 25
Issue: (3)
Page numbers: 657-660.
DOI: 10.1016/j.bios.2009.01.033
Alternative URL: http://www.sciencedirect.com/science/article/B6TFC-4VHGC26-7/2/6606088ff7d306935cf2ad1762a96020

Abstract: Glutathione peroxidase (GPx, EC is a key enzyme involved in scavenging of reactive oxygen species in biological system. For developing an efficient GPx-like antioxidant, catalytically necessary amino acid derivatives which located near the GPx active center were prepared as functional monomers. Via predetermined imprinting with substrate glutathione (GSH), a polymer-based GPx mimic with a similar structure of catalytic center of natural GPx was developed, and it demonstrated high-catalytic efficiency and substrate specificity. The imprinting polymer (I-PEM) exhibits GPx-like activity about three times higher than that of 2-SeCD, a cyclodextrin-based GPx mimic. The detailed studies on kinetics revealed that not only the substrate binding but also positional arrangement of reacting groups contribute significantly to the catalytic efficiency of the peroxidase model
Author keywords: artificial enzyme, imprinting, polymer, glutathione peroxidase

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