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Reference type: Journal
Authors: Lu Y, Yan CL, Wang XJ, Wang GK
Article Title: Protein imprinting and recognition via forming nanofilms on microbeads surfaces in aqueous media.
Publication date: 2009
Journal: Applied Surface Science
Volume: 256
Issue: (5)
Page numbers: 1341-1346.
DOI: 10.1016/j.apsusc.2009.08.003
Alternative URL: http://www.sciencedirect.com/science/article/B6THY-4WYDMTK-4/2/3bbedd8dddcfa0d8b8d9ec30cb545ff8

Abstract: In this paler, we present a technique of forming nanofilms of poly-3-aminophenylboronic acid (pAPBA) on the surfaces of polystyrene (PS) microbeads for proteins (papain and trypsin) in aqueous. Papain was chosen as a model to study the feasibility of the technique and trypsin as an extension. Obtained core-shell microbeads were characterized using scanning electron microscopy (SEM), Raman spectroscopy, X-ray photoelectron spectroscopy (XPS) and BET methods. The results show that pAPBA formed nanofilms (60-100 nm in thickness) on the surfaces of PS microbeads. The specific surface area of the papain-imprinted beads was about 180 m2 g-1 and its pore size was 31ánm. These imprinted microbeads exhibit high recognition specificity and fast mass transfer kinetics. The specificity of these imprinted beads mainly originates from the spatial effect of imprinted sites. Because the protein-imprinted sites were located at, or close to, the surface, the imprinted beads have good site accessibility toward the template molecules. The facility of the imprinting protocol and the high recognition properties of imprinted microbeads make the approach an attractive solution to problems in the field of biotechnology
Template and target information: protein, papain
Author keywords: Molecularly imprinted polymers, Nanofilm, protein, 3-aminophenylboronic acid

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