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Immobilized RNA switches for the analysis of complex chemical and biological mixtures

Immobilized RNA switches for the analysis of complex chemical and biological mixtures A prototype biosensor array has been assembled from engineered RNA molecular switches that undergo ribozyme-mediated self-cleavage when triggered by specific effectors. Each type of switch is prepared with a 5′-thiotriphosphate moiety that permits immobilization on gold to form individually addressable pixels. The ribozymes comprising each pixel become active only when presented with their corresponding effector, such that each type of switch serves as a specific analyte sensor. An addressed array created with seven different RNA switches was used to report the status of targets in complex mixtures containing metal ion, enzyme cofactor, metabolite, and drug analytes. The RNA switch array also was used to determine the phenotypes of Escherichia coli strains for adenylate cyclase function by detecting naturally produced 3′,5′- cyclic adenosine monophosphate (cAMP) in bacterial culture media. http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Nature Biotechnology Springer Journals

Immobilized RNA switches for the analysis of complex chemical and biological mixtures

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References (42)

Publisher
Springer Journals
Copyright
Copyright © 2001 by Nature Publishing Group
Subject
Life Sciences; Life Sciences, general; Biotechnology; Biomedicine, general; Agriculture; Biomedical Engineering/Biotechnology; Bioinformatics
ISSN
1087-0156
eISSN
1546-1696
DOI
10.1038/86723
Publisher site
See Article on Publisher Site

Abstract

A prototype biosensor array has been assembled from engineered RNA molecular switches that undergo ribozyme-mediated self-cleavage when triggered by specific effectors. Each type of switch is prepared with a 5′-thiotriphosphate moiety that permits immobilization on gold to form individually addressable pixels. The ribozymes comprising each pixel become active only when presented with their corresponding effector, such that each type of switch serves as a specific analyte sensor. An addressed array created with seven different RNA switches was used to report the status of targets in complex mixtures containing metal ion, enzyme cofactor, metabolite, and drug analytes. The RNA switch array also was used to determine the phenotypes of Escherichia coli strains for adenylate cyclase function by detecting naturally produced 3′,5′- cyclic adenosine monophosphate (cAMP) in bacterial culture media.

Journal

Nature Biotechnology – Springer Journals

Published: Apr 1, 2001

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