CRISPR

Our CRISPR/Cas9 System — Efficient, Modular, and Powerful

A moss vector system based on vectors previously developed for Rice (Miao et al., 2013).

Download Sequences and Protocol

No need for gene synthesis

Our CRISPR system eliminates the need to synthesize long stretches of DNA. Instead, simple oligonucleotides of your protospacer sequence can be ligated into our various entry clones using the Type IIS restriction enzyme, BsaI.

Transform up to 12 sgRNAs in one, transient transformation

Taking advantage of multisite Gateway™ cloning, it is possible to insert up to four sgRNAs into each of our three destination vectors for expression of up to 12 different sgRNAs in a single protoplast.

Co-transform a template for accurate repair

Introduce your own small- or large-scale changes using the endogenous Homology-Directed Repair pathway when you add a template containing regions of homology flanking the predicted double-strand break site.

Ensure a complete knockout using our Stop Codon Cassette

Co-transform our plasmid containing stop codons in all three open reading frames flanked by regions of homology to ensure a complete knockout of your gene of interest with easy genotyping.

sgRNA Entry Vectors

Each entry vector contains two BsaI sites downstream of the Physcomitrella U6 Promoter to create unique overhangs for seamless ligation of your protospacer oligo.

pENTR-U6P-sgRNA-L1L2

pENTR-U6P-sgRNA-L1R5

pENTR-U6P-sgRNA-L5L2

pENTR-U6P-sgRNA-L1L4

pENTR-U6P-sgRNA-R4R3

pENTR-U6P-sgRNA-L3L2

pENTR-U6P-sgRNA-L5L4

Destination Vectors

Each destination vector contains Cas9 driven by the Maize Ubiquitin Promoter, as well as a Gateway™ cassette for easy and directional recombination of each entry vector containing a unique sgRNA. Each plasmid expresses a different antibiotic resistance gene for selection in moss, allowing transformation of all three simultaneously. Each plasmid can also carry up to four sgRNAs with multisite Gateway™.

pMH-Cas9-Gate

Cas9 and sgRNA expression vector with hygromycin resistance.

pMK-Cas9-Gate

Cas9 and sgRNA expression vector with G418 resistance.

pZeo-Cas9-Gate

Cas9 and sgRNA expression vector with Zeocin resistance.

Homology-Directed Repair

These vectors can be used in the endogenous Homology-Directed Repair pathway when the Cas9 nuclease causes a double-strand break at your site of interest.

pGEM-gate

A generic destination vector containing the Gateway™ cassette with R1 and R2 sites for easy insertion of your homology regions with specific changes.

pENTR-R4R3-stop

A second-position entry vector containing stop codons in all three open reading frames and a multiple cloning site for easy genotyping.

Homology-Directed Repair Tagging Vectors

These second-position vectors can be inserted between homology regions to tag your gene of interest after the Cas9-induced double-strand break.

mEGFP Tagging Vectors

Each is available with or without a stop codon for C- and N-terminal tagging, respectively.

pENTR-R4R3-mEGFP

pENTR-R4R3-2xmEGFP

pENTR-R4R3-3xmEGFP

mRuby Tagging Vectors

Each is available with or without a stop codon for C- and N-terminal tagging, respectively.

pENTR-R4R3-mRuby

pENTR-R4R3-2xmRuby

pENTR-R4R3-3xmRuby

All CRISPR plasmids are available at AddGene. Each plasmid has a graphic map, raw sequence, and an annotated SerialCloner (.xdna) file available for download at the top of the page. SerialCloner is free to download here.