Nicking Mutagenesis: comprehensive single-site saturation mutagenesis
The purpose of this method is to generate comprehensive single-site saturation mutagenesis libraries. The required input for Nicking Mutagenesis is double-stranded plasmid DNA, and any plasmid dsDNA can be used provided that it contains a 7-base pair BbvCI recognition site. The method works by first creating an ssDNA template using a site and strand specific nicking endonuclease (Nt.BbvCI) followed by exonuclease digestion of the nicked strand. After creation of a heteroduplex by thermal cycling template with mutagenic oligos, the parental template ssDNA is destroyed by employing the opposite strand nicking endonuclease (Nb.BbvCI) followed by exonuclease digestion. A schematic of the method is outlined in Figure 1. The protocol can be completed in a single day (with transformation) and libraries can be harvested the following day.
Figure 1
This is a list of supplementary files associated with this preprint. Click to download.
Table 1 Time required for nicking mutagenesis Estimated time required for comprehensive library construction using nicking mutagenesis. Steps follow numbering in Figure 1.
Table 2 Sample library coverage statistics Nicking mutagenesis coverage statistics
Posted 06 Sep, 2016
Nicking Mutagenesis: comprehensive single-site saturation mutagenesis
Posted 06 Sep, 2016
The purpose of this method is to generate comprehensive single-site saturation mutagenesis libraries. The required input for Nicking Mutagenesis is double-stranded plasmid DNA, and any plasmid dsDNA can be used provided that it contains a 7-base pair BbvCI recognition site. The method works by first creating an ssDNA template using a site and strand specific nicking endonuclease (Nt.BbvCI) followed by exonuclease digestion of the nicked strand. After creation of a heteroduplex by thermal cycling template with mutagenic oligos, the parental template ssDNA is destroyed by employing the opposite strand nicking endonuclease (Nb.BbvCI) followed by exonuclease digestion. A schematic of the method is outlined in Figure 1. The protocol can be completed in a single day (with transformation) and libraries can be harvested the following day.
Figure 1