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Reference type: Journal
Authors: Gupta N, Singh RS, Shah K, Prasad R, Singh M
Article Title: Epitope imprinting of iron binding protein of Neisseria meningitidis bacteria through multiple monomers imprinting approach.
Publication date: 2018
Journal: Journal of Molecular Recognition
Volume: 31
Issue: (7)
Page numbers: ArticleNoe2709.
DOI: 10.1002/jmr.2709

Abstract: Epitope imprinting is a promising technique for fabrication of novel diagnostic tools. In this study, an epitope imprinted methodology for recognition of target epitope sequence as well as targeted protein infused by bacterial infection in blood samples of patients suffering from brain fever is developed. Template sequence chosen is a ferric iron binding fbp A protein present in Neisseria meningitidis bacteria. To orient the imprinting template peptide sequence on gold surface of electrochemical quartz crystal microbalance (EQCM), thiol chemistry was utilized to form the self-assembled monolayer on EQCM electrode. Here, synergistic effects induced by various noncovalent interactions extended by multiple monomers (3-sulfopropyl methacrylate potassium-salt and benzyl methacrylate) were used in fabricating the imprinting polymeric matrix with additional firmness provided by N,N-methylene-bis-acrylamide as cross-linker and azo-isobutyronitrile as initiator. Extraction of template molecule was carried out with phosphate buffer solution. After extraction of epitope molecules from the polymeric film, epitope molecularly imprinted polymeric films were fabricated on EQCM electrode surface. Nonimprinted polymers were also synthesized in the similar manner without epitope molecule. Detection limit of epitope molecularly imprinted polymers and imprinting factor (epitope molecularly imprinted polymers/nonimprinted polymers) was calculated 1.39-áng-ámL-1 and 12.27 respectively showing high binding capacity and specific recognition behavior toward template molecule. Simplicity of present method would put forward a fast, facile, cost-effective diagnostic tool for mass health care
Template and target information: epitope, peptide, protein, ferric iron binding protein, fbp A
Author keywords: diagnostic tool, epitope molecularly imprinted polymers, epitope sequence, Neisseria meningitidis, quartz crystal microbalance


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