Modified Shipping Schedule: Addgene will be closed November 23rd & 24th for the Thanksgiving holiday. Order processing and shipping may be delayed the week of Nov 20 - 24. If you have any questions, please contact us at [email protected].
This website uses cookies to ensure you get the best experience. By continuing to use this site, you agree to the use of cookies.

Please note: Your browser does not support the features used on Addgene's website. You may not be able to create an account or request plasmids through this website until you upgrade your browser. Learn more

Please note: Your browser does not fully support some of the features used on Addgene's website. If you run into any problems registering, depositing, or ordering please contact us at [email protected] Learn more

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.


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
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

Addgene Blugene icon

Do you have suggestions for other plasmids that should be added to this list?

Fill out our Suggest a Plasmid form or e-mail [email protected] to help us improve this resource!