Targeted, genome-scale overexpression in Proteobacteria.

CRISPR transposition and overexpression (CRISPRtOE) enables targeted, genome-scale gene upregulation in Proteobacteria, including Escherichia coli and Zymomonas mobilis.

• Why it matters: Understanding gene function and improving bacterial strains require precise overexpression tools, but current methods are limited, especially at the genome scale.
• What they did: The authors developed CRISPRtOE by leveraging CRISPR-associated transposons to insert synthetic promoters upstream of target genes, demonstrating its effectiveness in Proteobacteria through genome-scale screens.
• The result: CRISPRtOE successfully overexpressed genes, revealing known and novel antibiotic and bioengineering targets, and offers a versatile platform for bacterial gene function studies and industrial strain optimization.