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Recombineering in Vibrio natriegens

By Henry H Lee, Nili Ostrov, Michaela A Gold, George M. Church

Posted 24 Apr 2017
bioRxiv DOI: 10.1101/130088

Here, we show that λ-Red homologs found in the Vibrio-associated SXT mobile element potentiate allelic exchange in V. natriegens by 10,000-fold. Specifically, we show SXT-Beta (s065), SXT-Exo (s066), and λ-Gam proteins are sufficient to enable recombination of single- and double- stranded DNA with episomal and genomic loci. We characterize and optimize episomal oligonucleotide-mediated recombineering and demonstrate recombineering at genomic loci. We further show targeted genomic deletion of the extracellular nuclease gene dns using a double-stranded DNA cassette. Continued development of this recombination technology will advance high-throughput and large-scale genetic engineering efforts to domesticate V. natriegens and to investigate its rapid growth rate.

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