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CRISPR header icon CRISPR/Cas 9 Plasmids for use in Xenopus


Addgene is working with the leading scientists in the field to assemble the reagents and information you need to use the CRISPR/Cas9 technology in your own lab. The following Cas9 and gRNA expression plasmids have been designed for use in Xenopus.

Cut

Fully functional Cas9 enzymes designed to introduce a double-strand break (DSBs) at a specific location based on a co-expressed gRNA-defined target sequence. DSBs are preferentially repaired in the cell by non-homologous end joining (NHEJ); a mechanism which frequently causes insertions or deletions (InDels) in the DNA, possibly resulting in frameshifts. If a repair template with high homology to the DNA surrounding the DSB is introduced along with the Cas9 and gRNA plasmids, the cell may instead repair the break using homology-directed repair (HDR). HDR is much less error-prone than NHEJ and can be used to faithfully introduce specific genomic changes.

Plasmid Gene/Insert Promoter Selectable Marker PI Publication Hidden Extra Search Info
pCS2-3xFLAG-NLS-SpCas9-NLS3xFLAG-NLS-SpCas9-NLSCMV Chen Efficient RNA/Cas9-mediated genome editing in Xenopus tropicalis. Development. 2014 Jan 8. Cas9 expression plasmid pCS2+

Empty gRNA Expression Vectors

Select a gRNA expression plasmid based on factors such as selectable marker or cloning method. When using the CRISPR/Cas system, you will need to express both a Cas9 protein and a target-specific gRNA in the same cell at the same time. Single plasmids containing both the gRNA and Cas9 act as an all-in-one vector, but their function (cut, nick, activate, interfere...) is limited to that of the Cas9 present on the plasmid. gRNA plasmids that do not co-express Cas9 require a separate plasmid that does so; however, these independent gRNA plasmids can be paired with a wide variety of Cas9 plasmids and therefore are not limited to a single Cas9 function.

   gRNA Plasmid Promoter Cloning
Enzyme(s)
Delivery Resistance Co-expressed Cas9 Depositing lab
Cas9 species = S. pyogenes (PAM = NGG)
pUC57-Simple-gRNA backbone T7 BsaI In vitro transcription none, need Cas9 plasmid Chen

Last Updated: February 20, 2015

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