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Reference type: Journal
Authors: Pradhan S, Boopathi M, Kumar O, Baghel A, Pandey P, Mahato TH, Singh B, Vijayaraghavan R
Article Title: Molecularly imprinted nanopatterns for the recognition of biological warfare agent ricin.
Publication date: 2009
Journal: Biosensors and Bioelectronics
Volume: 25
Issue: (3)
Page numbers: 592-598.
DOI: 10.1016/j.bios.2009.03.041
Alternative URL: http://www.sciencedirect.com/science/article/B6TFC-4W0SJY2-1/2/a37c7e48c9c05b208e7537cee4955b89

Abstract: Molecularly imprinted polymer (MIP) for biological warfare agent (BWA) ricin was synthesized using silanes in order to avoid harsh environments during the synthesis of MIP. The synthesized MIP was utilized for the recognition of ricin. The complete removal of ricin from polymer was confirmed by fluorescence spectrometer and SEM-EDAX. SEM and EDAX studies confirmed the attachment of silane polymer on the surface of silica gel matrix. SEM image of Ricin-MIP exhibited nanopatterns and it was found to be entirely different from the SEM image of non-imprinted polymer (NIP). BET surface area analysis revealed more surface area (227ám2/g) for Ricin-MIP than that of NIP (143ám2/g). In addition, surface area study also showed more pore volume (0.5010ácm3/g) for Ricin-MIP than that of NIP (0.2828ácm3/g) at 12ánm pore diameter confirming the presence of imprinted sites for ricin as the reported diameter of ricin is 12ánm. The recognition and rebinding ability of the Ricin-MIP was tested in aqueous solution. Ricin-MIP rebound more ricin when compared to the NIP. Chromatogram obtained with Ricin-MIP exhibited two peaks due to imprinting, however, chromatogram of NIP exhibited only one peak for free ricin. SDS-PAGE result confirmed the second peak observed in chromatogram of Ricin-MIP as ricin peak. Ricin-MIP exhibited an imprinting efficiency of 1.76 and it also showed 10% interference from the structurally similar protein abrin
Template and target information: protein, ricin
Author keywords: MIP, BWA, ricin, Nanopatterns, Nanopores, protein

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