Precision genome engineering in rice using prime editing system.

Making precise changes in the genomes of organisms is challenging for most genome editing tools. Recently, a search-and-replace method, also known as prime editing, was developed that can introduce user-defined sequence into a target site without requiring double-stranded breaks (DSBs) or repair templates (Anzalone et al., 2019). The prime editor contains a Moloney murine leukemia virus reverse transcriptase (M-MLV RT) fused to the C terminus of SpCas9 (H840A) nickase (Anzalone et al., 2019). This fusion protein is guided by a prime editing guide RNA (pegRNA) to the target site. This article is protected by copyright. All rights reserved.