Journal
BIOSENSORS & BIOELECTRONICS
Volume 21, Issue 8, Pages 1659-1663Publisher
ELSEVIER ADVANCED TECHNOLOGY
DOI: 10.1016/j.bios.2005.07.019
Keywords
interferometry; biosensor; proteomics; EPEC
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Funding
- PHS HHS [R24-AL054953] Funding Source: Medline
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The study of proteins and the molecules with which they interact on an organismwide scale is critical to understanding basic biology, and understanding and improving human health. New platform technologies allowing label-free, quantitative array-based analysis of proteins are particularly desirable. We have developed an analytical technology, reflective interferometry (RI), which provides specific, rapid, and label-free optical detection of biomolecules in complex mixtures. In order to evaluate the suitability of RI for proteomics, we have prepared a series of arrays bearing the extracellular domain of the secreted enteropathogenic Escherichia coli (EPEC) protein Translocated Intimin Receptor (Tir). These arrays are able to selectively detect the extracellular domain of the protein Intimin, Tir's natural binding partner. Furthermore, we demonstrate the use of RI and Tir-functionalized arrays for the selective detection of EPEC directly from Culture. (c) 2005 Elsevier B.V. All rights reserved.
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