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Nucleic Acid Driven DNA Machineries Synthesizing Mg(2+) -Dependent DNAzymes: An Interplay between DNA Sensing and Logic-Gate Operations.
MedLine Citation:
PMID:  23015539     Owner:  NLM     Status:  Publisher    
Abstract/OtherAbstract:
Polymerase/nicking enzymes and nucleic-acid scaffolds are implemented as DNA machines for the development of amplified DNA-detection schemes, and for the design of logic gates. The analyte nucleic acid target acts, also, as input for the logic gates. In the presence of two DNA targets, acting as inputs, and appropriate DNA scaffolds, the polymerase-induced replication of the scaffolds, followed by the nicking of the replication products, are activated, leading to the autonomous synthesis of the Mg(2+) -dependent DNAzyme or the Mg(2+) -dependent DNAzyme subunits. These biocatalysts cleave a fluorophore/quencher-functionalized nucleic-acid substrate, thus providing fluorescence signals for the sensing events or outputs for the logic gates. The systems are used to develop OR, AND, and Controlled-AND gates, and the DNA-analyte targets represent two nucleic acid sequences of the smallpox viral genome.
Authors:
Ron Orbach; Lena Mostinski; Fuan Wang; Itamar Willner
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Publication Detail:
Type:  JOURNAL ARTICLE     Date:  2012-9-27
Journal Detail:
Title:  Chemistry (Weinheim an der Bergstrasse, Germany)     Volume:  -     ISSN:  1521-3765     ISO Abbreviation:  Chemistry     Publication Date:  2012 Sep 
Date Detail:
Created Date:  2012-9-27     Completed Date:  -     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  9513783     Medline TA:  Chemistry     Country:  -    
Other Details:
Languages:  ENG     Pagination:  -     Citation Subset:  -    
Copyright Information:
Copyright © 2012 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim.
Affiliation:
Institute of Chemistry, The Minerva Center for Complex Biohybrid Systems, The Hebrew University of Jerusalem, Jerusalem 91904 (Israel), Fax: (+972) 2-652-7715.
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