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In this book, seven chapters describe studies aimed at understanding and exploiting the key features of such molecular RNA and DNA devices. In the first section of the book, four chapters are devoted to artificial nucleic acid switches and sensors. These chapters introduce the concept of allosteric ribozymes as molecular switches and sensors; describe nucleic acid enzymes that are switched by oligonucleotides and other nucleic acid enzymes that are switched by proteins; and illustrate how switching elements can be integrated ration-ally into fluorescently signaling molecular sensors made out of nucleic acids. In the second section of the book, three chapters show that nature has been as crafty a molecular-scale engineer as any modern scientist via evolution of natural nucleic acid switches and sensors. RNAs have been found whose activities are modulated either by proteins or by small-molecule metabolites, and both kinds of system are described. Finally, the notion of exploiting naturally occurring RNA switches for drug development is discussed.

Biomedicine. --- Human Genetics. --- Medical Microbiology. --- Medicine. --- Human genetics. --- Microbiology. --- Médecine --- Génétique humaine --- Microbiologie --- Biosensors. --- Catalytic RNA. --- RNA -- Biotechnology. --- Catalytic RNA --- Biosensors --- RNA --- Enzymes --- Nucleic Acids, Nucleotides, and Nucleosides --- RNA, Untranslated --- Genes, Regulator --- Molecular Probe Techniques --- Metabolic Phenomena --- RNA, Catalytic --- Biosensing Techniques --- Metabolism --- Genes, Switch --- Nucleic Acids --- Investigative Techniques --- Genes --- Chemicals and Drugs --- Enzymes and Coenzymes --- Phenomena and Processes --- Analytical, Diagnostic and Therapeutic Techniques and Equipment --- Genome Components --- Genome --- Genetic Structures --- Genetic Phenomena --- Human Anatomy & Physiology --- Biology --- Medicine --- Pathology --- Animal Biochemistry --- Genetics --- Health & Biological Sciences --- Biotechnology --- Biotechnology. --- Biodetectors --- Biological detectors --- Biological sensors --- Biomedical detectors --- Biomedical sensors --- Ribonucleic acid enzymes --- Ribozymes --- RNA enzymes --- Medical microbiology. --- Detectors --- Medical instruments and apparatus --- Physiological apparatus --- Non-coding RNA --- Nucleases