Abstract
We constructed IncP broad-host-range Gateway® entry cosmids pJC8 and pJC24, which replicate in diverse Proteobacteria. We demonstrate the functionality of these vectors by extracting, purifying, and size-selecting metagenomic DNA from agricultural corn and wheat soils, followed by cloning into pJC8. Metagenomic DNA libraries of 8×104 (corn soil) and 9×106 (wheat soil) clones were generated for functional screening. The DNA cloned in these libraries can be transferred from these recombinant cosmids to Gateway® destination vectors for specialized screening purposes. Those library clones are available from the Canadian MetaMicroBiome Library project (http://www.cm2bl.org/).
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