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[donny]

I want to subclone a gene from the E coli genomic DNA into an expression vector. Can I simply do a colony PCR with primers containing the restriction sites to amplify the gene or do I have to purify the genomic DNA first? Thanks!

[HomeBrew]

If your primers produce a single well-isolated band of sufficient quantity when used in colony PCR, you can recover this band from a gel and clone it.