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An Allosteric Hammerhead Ribozyme

We have constructed an RNA molecule containing a hammerhead ribozyme that is under allosteric control. In the inactive state, the RNA enzyme is unable to cleave a suitable substrate.The formation of the active state of the ribozyme is triggered by a specific interaction with a DNA oligonucleotide effector that is complementary to a single-stranded loop in the RNA enzyme molecule.Other DNA or RNA molecules containing unrelated nucleotide sequences do not function as allosteric effectors. This work demonstrates the feasibility of designing RNA enzymes that are specifically activated in response to an artificially designed molecular recognition event. Such enzymes may have practical applications.

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Correspondence to Paul M. Lizardi.

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Porta, H., Lizardi, P. An Allosteric Hammerhead Ribozyme. Nat Biotechnol 13, 161–164 (1995). https://doi.org/10.1038/nbt0295-161

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