... 47327 pET-28b-Cas9-His 6xHis (C terminal); NLS (C terminal) 62933 pET-Cas9-NLS-6xHis ...6xHis (C terminal); NLS (C terminal) 62934 pET-NLS-Cas9-6xHis 6xHis (C terminal); NLS (N terminal).... recommend ribonucleoprotein (RNP) complexes of Cas9 protein and the separated guide RNA components (...increase T7 promoter activity. To avoid re-cutting by Cas9 after editing, make sure that the repair template... 2.  You can also use Addgene plasmids to purify Cas9 protein. The table below contains some of our favorites...PMCID: PMC3961003  Miura, Hiromi, et al. “CRISPR/Cas9-based generation of knockdown mice by intronic insertion...Learn about Homology Directed Repair Learn about Cas9 Ribonucleoprotein (RNP) Delivery Resources on Addgene.org...

...Technique PI Purpose pCas9 42876 CRISPR Luciano Marraffini Bacterial expression of Cas9 nuclease gRNA. For...Anhydrotetracycline inducible expression of wild-type Cas9 from S. pyogenes for inducing double stranded breaks. For...efficient enough that selection is not required. pET-HIS-Sangamo 40786 TALEN Gang Bao Gateway cloning .... coli codon optimized FokI endonuclease domain. pET-Sangamo-His 40787 TALEN Gang Bao Gateway cloning ...terminal, TEV cleavable 6x-His tag Ophear Gileadi pET-28-a based expression vector containing N-terminal...various epitope tags useful for protein purification. pET LIC Series Various Plasmids T7-lacO (lactose/IPTG...Anhydrotetracycline inducible expression of catalytically inactive Cas9 ( S. pyogenes ) which can be combined with expression...

...express and purify His-tagged Cas9 from E. coli using a plasmid such as pET-28b-Cas9-His from Alex Schier’s ... can occur due to prolonged Cas9 expression     The requirement for Cas9 transcription and translation...consisting of the Cas9 protein in complex with a targeting gRNA, to your cells of interest. Cas9 RNPs are capable...pathways. This makes Cas9 RNPs useful for CRISPR applications where limited expression of Cas9 is required and... of Cas9-gRNA RNPs by specific cell types (Rouet et al. 2018). This was accomplished using a Cas9 mutant...for experiments where stable Cas9 expression is required, such as when a Cas9 fusion to a fluorescent protein...and stability of the Cas9 protein in the host. Indeed, research has shown that a Cas9 protein from Geobacillus...

...Cre-dependent Cas9: Cre-dependent Cas9 can be knocked in to a mouse at the Rosa26 locus to facilitate Cas9 mediated...iRFP670, Cre, and GFP EFS Lentiviral Jacks 68468 Cas9-2A-Cre Cas9 and Cre CAG Mammalian Zhang 68477 pTRE:iRFP670...CMV Mammalian Sato 123128 pET-His-Cre 6xHis-Cre T7 Bacterial Liu 123131 pET-His-VCre 6xHis-VCre T7 Bacterial...sgRNA expression hSyn AAV Zhang 60820 pSECC Cre, Cas9 and sgRNA expression EF-1 alpha Lentiviral Jacks...Targeting vector Mouse Nxph4 Mammalian Zeng 62372 pET-(-30)GFP-9xGGS-Cre-6xHis Cre fused to supernegatively...62730 CRE recombinase Cre T7 Bacterial Geijsen 62938 pET-(pos36)GFP-9xGGS-Cre-6xHis Cre fused to highly cationic...cationic GFP variant T7 Bacterial Liu 62939 pET-Cre-6xHis Cre-6xHis T7 Bacterial Liu 63704 pRetroX GFP...

...plant, Dr. Robertson aims to make use of the CRISPR/Cas9 technology to engineer plants that are able to destroy... using a bacterial expression system such as the pET GFP LIC cloning vector and the pOKD plasmids. The...

...outperformed other 3D chromatin methods such as ChIA-PET or Hi-C, by increasing both the number of unique ...1st time CRISPR users Learn how to Choose the Best Cas9 Variant for Your Next Experiment Learn More About... Additional Resources on Addgene.org Find Other Cas9 Variants for Purifying Genomic Regions of Interest...co-expressed, the gRNA targets the dCas9 to the loci of interest and dCas9 is biotinylated by BirA. From here...To increase the resolution, the Xu lab created a dCas9-based CAPTURE (CRISPR Affinity Purification in situ... cell line that co-expresses three components: dCas9 with an added biotin acceptor site BirA, a biotin...be pulled down via streptavidin IP. Biotinylated dCas9 goes along for the ride throughout all of these ...

...repression with nuclease-competent Cas9. When complexed with a truncated gRNA, Cas9 is still able to bind... gRNA, Cas9 binds the target site, but does not cut either strand of DNA. Traditional Cas9 regulators... a potent Cas9-based transcriptional regulator without making any functional changes to Cas9. For instance...tight control over Cas9 nuclease activity while eliminating the reliance on orthogonal Cas9 species. Within... Figure 1: Schematic of native (nuclease-competent) Cas9 interacting with either a full-length gRNA ...capability, and this nuclease-null or “dead” Cas9 (dCas9) variant can then be fused to effector domains...system that relies on two distinct Cas9 variants—nuclease-competent or nuclease-null—in order to effect...

... available with multiple Cas9 variants, including high fidelity Cas9s, Cas9s with various PAM requirements...strand SpCas9-HF1 - disrupt Cas9’s interactions with DNA phosphate backbone HypaCas9 - increase Cas9 proofreading...new tools. Figure 3: Overview of Cas9n Nickase and dead Cas9 The two Cas9 nuclease domains, RuvC and HNH...enhanced specificity by engineering Cas9 into high fidelity Cas9s (hfCas9) . There is currently no defined...application. Cas9 Orthologs While SpCas9 is the most commonly used Cas enzyme, additional Cas9 orthologs ...constructs with Cas9 fused to proteins that modulate HDR or NHEJ components, like miCas9 , Cas9-DN1S , or others...Plasmids: Purify Cas9 Alternatives for CRISPR Genome Engineering S. pyogenes Cas9 (SpCas9) is the most commonly...

...A549 cells stably expressing Cas9. A549 cells were transduced with lentiCas9-Blast 1 and then selected with...Figure 2: Cas9 expression in monoclonal cell lines generated from A549 cells transduced with lentiCas9-Blast... express Cas9 and are included as a control (WT). Vinculin is a loading control. 1 lentiCas9-Blast was...additional 3 weeks under blasticidin selection. Anti-Cas9 Western blotting was performed on whole-cell extracts...single channel pipette 2–20 µL single channel pipette 20–200 µL single channel pipette 200–1000 µL single...single channel pipette CO 2 incubator Pipet controller Hazardous waste container Microscope Hemocytometer... by passing several times through a serological pipet or by passing through a 40 µm cell strainer mesh...

...as a binding signal for Cas9 and this sequence is a strict requirement for Cas9-mediated DNA cleavage. ...of novel S. pyogenes Cas9 variants with varying PAM sequences, 2) the use of Cas9 homologs derived from...2020). Characterization of Cas9 from additional bacterial species Many more Cas9 orthologs have been isolated...them more useful than SpCas9. For example, Cas9 from Staphylococcus aureus (SaCas9) is about 1 kilobase... in length, Cas9 from Campylobacter jejuni (CjCas9) is even smaller than SaCas9 and is also compatible...VQR, EQR and VRER SpCas9 variants effectively double the targeting range of CRISPR/Cas9 within the human... ~20 additional Cas9 species PAM sequence may not be characterized Non-SpCas9's bind a variety ...

...chromosome encodes a tracrRNA (in some systems including Cas9), Cas proteins, and a CRISPR array. The CRISPR array...bacteria, these crRNAs are bound by Cas proteins (Cas9 shown here). The repeat sequence base pairs with...“single-guide RNA” that performs both functions. Cas9 cuts both the target and nontarget DNA strands upstream...CRISPR-associated.” The most famous of these proteins is Cas9 nuclease, but there are many other Cas proteins ... strand: The paired strand of foreign DNA cut by Cas9, whose sequence is not checked. Assuming full complementarity...these sequences. Pro tip! Various labs have created Cas9 enzymes with looser PAM requirements, which are ...sequence is the RNA guide, like a wanted poster that Cas9 uses to track down its suspect—the target DNA. tracrRNA...

... Figure 2: Cas9 RNP complexed with 2-part cr:tracrRNA tags genes more effectively than Cas9 complexed ...Enhanced CRISPR/Cas9-mediated precise genome editing by improved design and delivery of gRNA, Cas9 nuclease,...target site. With the widespread adoption of CRISPR/Cas9 technology and rapid improvements in the field, ...set out to develop a hassle-free, highly efficient Cas9 protein-based method for epitope tagging in mammalian...genes at a time using Custom Synthetic cr:tracrRNA/Cas9 Ribonucleoprotein (csRNP) delivery Epitope tagging...delivery of three reagents to cells: a guide RNA, Cas9 protein, and a donor DNA that contains the tag sequence...annealed cr:tracrRNA is then mixed with recombinant Cas9 protein to form the ribonucleoprotein complex (csRNP...

...pCRISPomyces-1 includes Cas9, a tracrRNA, and a CRISPR array, while pCRISPomyces-2 contains Cas9 and a gRNA cassette...functions more similarly to CRISPR/Cas9 systems adapted for eukaryotes in that Cas9-mediated cleavage induces ...targeting either a catalytically dead Cas9 (dCas9) alone or a dCas9 fused to the omega subunit of RNA polymerase... from Addgene consists of two plasmids: pCas9: carries Cas9 and chloramphenicol resistance pCRISPR: carries.... They identified the Cas9 orthologue from Streptococcus thermophilus, Cas9sth1 as a robust and highly...when using a nickase version of Cas9, but were also successful using a dCas9 variant as well. Furthermore...unsuccessful and the wild-type sequence persists, Cas9 will cleave the gene of interest, inducing a lethal...

...overcome some of Cas9’s shortcomings. Cpf1’s preferred PAM is 5’-TTN, differing from that of Cas9 (3’-NGG) in...than that of the widely used SpCas9 and comparable to SaCas9. As seen with Cas9 orthologs, Cpf1 efficiency...rate is similar to that of high fidelity Cas9s eSpCas9 and SpCas9-HF1. Both AsCpf1 and LbCpf1 ribonucleoproteins...two Cpf1 nucleases, distant cousins of well-known Cas9. Cpf1 cleaves DNA in a staggered pattern and requires...rather than the two (tracrRNA and crRNA) needed by Cas9 for cleavage. Now, two new studies show that Cpf1...Cpf1 displays lower off-target editing than Cas9, confirming that this protein is well suited for genome...advantages of Cpf1 Type II CRISPR systems based on Cas9 were thought to be the simplest CRISPR systems and...

... preassembled Cas9/gRNA complexes or with guide RNA- and Cas9-expression plasmids. Cas9 guide RNA delivery...genome, which seem resistant to Cas9 cleavage (1). Both the CRISPR-Cas9 and NgAgo genome engineering methods...Targeting Specificity with eSpCas9 and SpCas9-HF1 See How Cpf1 Stacks Up to Cas9 and NgAgo Resources on ...engineer sharing the stage with much-lauded CRISPR-Cas9 is DNA-guided endonuclease NgAgo! We'll discuss ...head-to-head.  Exciting features of NgAgo First, unlike Cas9, NgAgo does not require a PAM sequence for target... guide sequence rather than an RNA guide as with Cas9. Third, it can be used to target “difficult” GC-...the other hand, the widespread success of CRISPR-Cas9 across multiple model organisms (3) lies in the ...

...alternative Cas9, from Streptococcus aureus, is as effective at editing mouse embryos as Cas9 from S. pyogenes...guest bloggers, Wenning Qin and Haoyi Wang. CRISPR/Cas9 is revolutionizing the mouse gene-targeting field...ever to manipulate the mouse genome using CRISPR/Cas9. Similar to the human genome, the mouse genome ...robust in performance. In its natural setting, CRISPR-Cas9 is an acquired immune system in bacteria and archaea...) of about 125 nt that specifies the target, the Cas9 endonuclease that creates the DNA double-strand ...model basics To create a mouse model, the gRNA, Cas9, and donor oligonucleotide or plasmid components...AAV can also be used as a vector to deliver CRISPR/Cas9 either through injection into either an oocyte or...

...indicates that like GeoCas9 and ThermoCas9, IgnaviCas9 is a type II-C Cas9. IgnaviCas9 is most similar to...thermostable Cas9 enzymes have previously been characterized: GeoCas9 from the Doudna lab and ThermoCas9 from ...Find IgnaviCas9 here! What can you do with IgnaviCas9? Why would a thermostable Cas9 be useful? It can enable...launched in the Quake Lab. Identifying IgnaviCas9, a hyperthermostable Cas9 This year it was wonderful to learn... Ignavibacteriae phylum genome. IgnaviCas9 is a hyperthermostable Cas9 CRISPR nuclease that is active ... our CRISPR blog posts Read about GeoCas9, another thermostable Cas9 Resources on Addgene.org Read our... to a type II-C Cas9 from Parvibaculum lavamentivorans, whose optimal growth temperature is 30°C. Find...

..., a base editor containing high fidelity Cas9 variant HF-Cas9. They subsequently tested the original BE3...-BE3  EQR-Cas9 (NGAG)  Lower off-target activity than BE3  85173  pBK-VRER-BE3  VRER-Cas9 (NGCG)   ...The popular CRISPR base editing technique uses dCas9/Cas9 nickase fused to a cytidine deaminase for targeted...Plasmid ID Plasmid Name Cas9 Variant Speacial Features 85169  pJL-SaBE3  SaCas9 (NNGRRT)    85170  pJL-SaKKH-BE3... pJL-SaKKH-BE3  SaCas9 (NNGRRT)    85171  pBK-VQR-BE3  VQR-Cas9 (NGA)  Lower off-target activity than...than BE3; editing window ~1-2 nt  87438  pET42b-HF-BE3  HF-Cas9 (NGG)  Very low off-target activity; protein...the effects of dCas9 binding to a genomic locus, or limiting the amount of time that Cas9 is active in ...

...at the Rockefeller University in NYC. The CRISPR/Cas9 system is a versatile tool for precise gene editing...organisms and model systems. We have used CRISPR/Cas9 extensively for the purpose of making sequence-specific...induced pluripotent stem cells (iPSCs). The CRISPR/Cas9 com­plex is very efficient at introducing double...Cas-blocking mutations After genome editing with CRISPR/Cas9 in human cells was described in 2013 (Cong et al...amounts of single cell clones. Furthermore, CRISPR/Cas9 editing is often bi-allelic, meaning that even if...systematically analyzed: introducing silent CRISPR/Cas9 blocking mutations in either the PAM (changing one...distance"  Even though we had controlled over-active Cas9 and repeated our experiments with blocking mutations...

...fully functional Cas9 upon dimerization. Splitting wild-type Cas9 into n-terminal (Cas9(N)-2xNLS) and c-terminal... can write a blog post about it! Split Cas9 system The Cas9 protein is composed of an n-terminal DNA... the bi-lobed architecture of Cas9 to engineer a series of "split" cas9 molecules that cannot function...activation, the c-terminal cas9 fragment was fused with FK 506 binding protein 12 (Cas9(C)-FKBP-2xNLS) and the... the n-terminal cas9 fragment with FKBP rapamycin binding domain of mTor (Cas9(N)-FRB-NES) resulting in...rapamycin-inducible Cas9 for genome editing. Without rapamycin treatment, the Cas9(N)-FRB-NES fragment...sequence. Treatment with rapamycin induces Cas9(N)-FRB-NES and Cas9(C)-FKBP-2xNLS dimerization and net influx...