Image of blue dCas9 with a lock, representing its lost endonuclease activity.
Glossary

dCas9

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Catalytically inactive, or “dead,” Cas9. This mutated version of the Cas9 protein cannot cut, but still binds tightly to a particular DNA sequence specified by the guide RNA. Can be used to physically block the process of transcription, turning off a specific gene, or to shuttle other proteins to a particular site in the genome.

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