Skip to main content



CRISPR Plasmids: Xenopus

The following CRISPR plasmids have been designed for use in Xenopus.


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 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 CRISPR, you will need to express both a Cas protein and a target-specific gRNA in the same cell at the same time. Single plasmids containing both the gRNA and Cas protein act as all-in-one vectors, but their function is often limited to a single category (cut, nick, etc.) On the other hand, gRNA plasmids that do not co-express a Cas protein can be paired with a wide variety of Cas-containing plasmids.

   gRNA Plasmid Promoter Cloning
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
Addgene Blugene icon

