Abstract
The creation of the nuclease-dead Cas protein (dCas9) offers a new platform for a plethora of new discoveries. The presently disclosed dCas9 and single-guide RNA, preassembled to form ribonucleoprotein dCas9-sgRNA (referred to as dRNPC), is capable of specifically and reversibly blocking the activity of DNA cleavage by restriction enzymes. The inhibition of restriction enzyme activities occurs when the sgRNA or the PAM sequence overlaps the recognition or the cleavage site of the DNA. The multiple dRNPC can simultaneously inhibit more than one restriction enzyme site. The disclosed method can be used to ligate inserts into vectors, and vice versa, whereby selective restriction enzyme sites are temporarily sheltered to allow the desired cloning.
| Original language | English |
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| Patent number | WO2022093056 |
| IPC | C12N 15/ 90 A I |
| Priority date | 26/10/20 |
| Publication status | Published - 5 May 2022 |