articleNatureJun 26, 2024HYBRID OA

Bridge RNAs direct programmable recombination of target and donor DNA

Palo Alto Institute · Arc Research Institute · +6 more institutions

PubMed
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Abstract

Abstract Genomic rearrangements, encompassing mutational changes in the genome such as insertions, deletions or inversions, are essential for genetic diversity. These rearrangements are typically orchestrated by enzymes that are involved in fundamental DNA repair processes, such as homologous recombination, or in the transposition of foreign genetic material by viruses and mobile genetic elements 1,2 . Here we report that IS110 insertion sequences, a family of minimal and autonomous mobile genetic elements, express a structured non-coding RNA that binds specifically to their encoded recombinase. This bridge RNA contains two internal loops encoding nucleotide stretches that base-pair with the target DNA and the…

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