... 1. Comparing SpCas9 and GeoCas9. *For in vitro Cas9 RNP activity or longevity. GeoCas9 is active at high...used to make eSpCas9 and SpCas9-HF1. By mining the treasure trove of naturally occurring Cas9 diversity ...bacteria, such as Streptococcus pyogene’s SpCas9. These Cas9 proteins don’t work well at high temperatures...discovery of GeoCas9 by the Doudna lab has opened up the field of thermophilic bacteria to CRISPR/Cas9 genome...discovered a Cas9 protein from the thermophilic bacteria Geobacillus stearothermophilus (GeoCas9). G. stearothermophilus...human plasma. The discovery of GeoCas9 clears the way for CRISPR/Cas9 genome editing in facultative and... below. And if you want to give GeoCas9 a try, as always, the plasmids are available from Addgene. Happy...

...They went on to show that their CRISPR/Cas9-nuclease and CRISPR/Cas9-nickase vectors work successfully to...based on earlier evidence showing that a CRISPR/Cas9 plasmid could be injected directly into mice for genome...versions of Cas9, nuclease and nickase, but we are now adopting dCas9, dCas9-VP64, and dCas9-KRAB in our...all-in-one vector construction system for CRISPR/Cas9-mediated multiplex genome engineering is now available...one of the most advantageous properties of CRISPR/Cas9 compared to ZFNs and TALENs,” said Tetsushi Sakuma...offers ease and efficiency for all-in-one CRISPR/Cas9 vectors expressing up to seven guide RNAs (gRNAs...Figure 1: Schematic overview of the all-in-one CRISPR/Cas9 vector construction system for multiplex genome ...

...modification. Plasmid ID Plasmid Name Cas9 Variant Speacial Features 85169  pJL-SaBE3  SaCas9 (NNGRRT)   ...highlight a subset of the new plasmids in the repository through our hot plasmids articles. These brief articles...articles provide a synopsis of a plasmid or group of plasmids' functions and applications. We hope that... you to find and use the plasmids you need. You can find all the hot plasmids from 2017 below. With over...over 50,000 plasmids, we can't write posts for every great plasmid that comes into the repository, but...write about your plasmids in a future blog post. No time to read? Listen to our hot plasmids segment on the..., a base editor containing high fidelity Cas9 variant HF-Cas9. They subsequently tested the original BE3...

... a colorful Cas9 toolbox, Ma et al. turned to SpCas9 and its orthologs NmCas9 and St1Cas9. Each ortholog...states. dCas9 gets a colorful makeover Even without its nuclease activity, catalytically dead Cas9 (dCas9... colorful system that uses fluorescently labeled Cas9 to label multiple genomic loci in live cells. While...hybridization (FISH) or fluorescently labeled TALEs, CRISPR/Cas9’s ease of use and ability to label live cells make... chromatin organization. This fluorescent CRISPR/Cas9-based method is a great step forward in live cell...As this study joins the pantheon of useful CRISPR/Cas9 techniques, we at Addgene are excited to see what....1420024112. Epub 2015 Feb 23. Pubmed. Find the plasmids from this publication at Addgene. Dynamic imaging...

...express Cas9 and a gRNA from the same plasmid. LentiCas9-blast virus can be used to generate Cas9-expressing... this plasmid Cas9 expression is typically cytotoxic, which makes generation of high titer Cas9 lentiviruses...While various Cas9 mutants have been engineered to perform unique editing tasks, classic Cas9 nuclease, which...gRNAs in a monoclonal Cas9 background because you’ll have more consistent levels of Cas9 expression between... expressed from lentiCas9-Blast. Purpose of LentiCas9-blast LentiCas9-blast is a Cas9 expression vector...Secondly, you can use a LentiCas9-Blast viral prep to create a single stable Cas9-expressing cell line and...growth rate variability when using lentiCas9-blast to generate Cas9-expressing cells. To ensure that this...

...fully functional Cas9 upon dimerization. Splitting wild-type Cas9 into n-terminal (Cas9(N)-2xNLS) and c-terminal...Rapamycin-inducible Cas9 sets (Addgene plasmids 62883 &62884; 62885 & 62886) Rapamycin-inducible dCas9-VP64 activator...amazing plasmid technologies developed by our community of depositors. With over 40,000 plasmids avaliable...amazing new plasmid tools that have come through our doors in 2015. Do you have a favorite new plasmid tool ... 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...

... to construct plasmid vectors or synthesize/purify IVT sgRNA in the lab. Figure 2: Cas9 RNP complexed...genes more effectively than Cas9 complexed with sgRNA. Direct comparison of Cas9 RNPs prepared with an in...Enhanced CRISPR/Cas9-mediated precise genome editing by improved design and delivery of gRNA, Cas9 nuclease,...on the Addgene Blog Plasmids for endogenous gene tagging in human cells Plasmids 101: Protein Tags Fluorescent...Addgene.org Browse CRISPR plasmids Check out our CRISPR guide pages Find ready-to-use Cas9 lentivirus ...target site. With the widespread adoption of CRISPR/Cas9 technology and rapid improvements in the field, ...from many pitfalls: they require construction of plasmid vectors and/or rely on cumbersome in vitro synthesis...

...single base editing by APOBEC-Cas9 Though the ACE reporter quantifies APOBEC-Cas9 efficiency in real-time, ...efficiency of plasmid delivery to a cell. In contrast, TREE provides a read out for plasmid delivery and...and enrichment of DNA editing by APOBEC–Cas9 or cleavage by Cas9 in living cells. Nucleic Acids Research... a APOBEC-Cas9n-UGI complex. So how exactly does this work? Figure 1: APOBEC- and Cas9-mediated ...genome, but they’re inefficient compared to CRISPR/Cas9 edits that rely on double strand DNA breaks. Due...can help you do just that. Monitoring APOBEC and Cas9-mediated editing in real time The Harris lab created...APOBEC (a family of cytidine deaminase proteins) and Cas9-mediated editing in real time (St. Martin et al....

... CHIME works through transduction of Cas9-expressing (Rosa26-Cas9) hematopoietic stem cells with a lentiviral...Table 1). The four systems Name Function Plasmid Transduction Marker Mouse Strain C-CHIME...genes pXPR_219 Violet-excited GFP (vex) Rosa26-Cas9 I-CHIME Inducible knockout of a single gene...Violet-excited GFP (vex) Rosa26-FlpO-ERT2; H11-Cas9 L-CHIME Knocks out a single gene in defined... Violet-excited GFP (vex) Lineage-Cre; Rosa26-Cas9 S-CHIME Knocks out pairs of genes sequentially...Violet-excited GFP (vex) Rosa26-FlpO-ERT2; H11-Cas9 Table 1: X-CHIME systems Proof of Concept These...  The X-CHIME deposit also includes pXPR_071, a plasmid that leads to higher titer lentivirus preparations...

...highlight a subset of the new plasmids in the repository through our hot plasmids articles. These articles ...recent plasmid deposits and we hope they'll make it easier for you to find and use the plasmids you need... recent plasmid deposit please sign up here.          Listen to this episode of Hot Plasmids! Optogenetic...Grefen and Blatt, 2012). The 2in1 Plasmid Toolkit consists of 4 plasmid toolkits generated with 4 different...deposited the resulting optogenetic plasmid tools which includes plasmids encoding a fusion between cPYP and... It works with the S. pyogenes Cas9, dCas9-effector fusions, and xCas9, and requires no additional chemicals...Optogenetic control of CRISPR-Cas9 by CASANOVA Article contributed by Cary Valley  Listen to the anti-CRISPR...

...subset of the new plasmids and viral preps in the repository through our hot plasmids articles. These articles...recent plasmid deposits and we hope they'll make it easier for you to find and use the plasmids you need...need. If you'd ever like to write about a recent plasmid deposit please sign up here.  Here's what you'...CRISPR-based genetic screening methods have primarily used Cas9 to knock out genes, researchers at the Genetic Pertubation... a single expression cassette is advantageous to Cas9’s larger expression requirements (Figure 1), but... guides. While two guides require two arrays for Cas9, two guides can be streamlined into a single array...-wide library capable of performing similarly to Cas9 screens in a compacted library. Overall, Cas12a’...

... kit to CRISPR/Cas9? When would you choose one or the other? Musunuru: The CRISPR/Cas9 system is easier...kit includes 834 plasmids for the pieces you need to assemble. Our system for CRISPR/Cas9 (also available...two plasmids. In many cases, CRISPR may be more efficient. You might often start with CRISPR/Cas9, but...effector nuclease (TALEN) kit consisting of 834 plasmids. The researchers showed they could use their TALEN...makes possible, and how it compares to his CRISPR/Cas9 system. Addgene: For people unfamiliar with this...particular DNA sequence? Musunuru: The kit includes 832 plasmids containing prefabricated pieces that allow you...the genome in rapid fashion. The two remaining plasmids in the kit have the rest of the protein in place...

...and select for Cas9 mutants with PAM flexibility. In this system, the mutagenesis plasmid (MP6) permits...transcription from the accessory plasmid (AP) encoding phage gene III. The accessory plasmid library contained all...enrich for Cas9 variants with activity on non-NGG PAMs, generating xCas9 3.0-3.13. To test xCas9 3.0-3.13...In order to bind DNA, Cas9 and other CRISPR enzymes require a short PAM sequence adjacent to the targeted...problem, researchers have engineered alternative Cas9s binding distinct PAM sequences. Now, Hu et al., ...low predicted on-target efficiency. In cases where Cas9 won’t work, there are other options. Commonly used..., improve targeting in AT-rich loci or genomes. Cas9s from other species, like S. aureus and N. meningitidis...

...of the second plasmid can be done in one day in one assembly reaction. This second plasmid saves you a ...alerts when plasmids become available.  We’ve also had some requests for variations on the plasmids we’ve developed...and Myers for speaking with us! Find the Plasmids: Plasmids for protein tagging with CRISPR Additional...efficiently, they’ve recently adapted the CRISPR/Cas9 system for protein tagging. We spoke with Mendenhall... available at Addgene. For more details on the plasmids that are currently available along with detailed...system, what we are doing is adding in a second plasmid to target an epitope tag onto the transcription...second vector is a homology directed repair donor plasmid with homology arms and a selection marker. If things...

... enzyme with a fully active Cas9 enzyme. PE-Cas9 comprises an active Cas9 fused to the reverse transcriptase...CRISPR guide Find CRISPR plasmids by function Find recently deposited plasmids Topics: CRISPR, Other CRISPR... where we highlight a few of the newest CRISPR plasmids available at Addgene. If you want to read more...will cover: Miniature CRISPR-Cas systems SEND plasmids Prime editing improvements Miniature CRISPR-Cas...drawback to the commonly used S. pyogenes CRISPR/Cas9 system is that it is too large to be effectively...CasMINI system is less than half the size of the Cas9 or Cas12a based systems, making it well suited for...Read the paper in Molecular Cell Find the CasMINI plasmids Efficient CRISPR editing with a hypercompact ...

...express both SpCas9 and your gRNA in a variety of mammalian cell types. Purpose  SpCas9 This plasmid expresses...sure, as is obvious from our most requested plasmid, SpCas9 is still going strong as the basis for many...without further ado, the most request plasmid in 2016 was... pSpCas9(BB)-2A-Puro (PX459) V2.0       Similar...the top requested plasmid from 2016 is an expression vector for CRISPR nuclease, SpCas9 from the Zhang Lab...sequence as directed by a gRNA. 2A-Puro In this plasmid, SpCas9 is fused to the puromycin resistance gene through... V2.0. pSpCas9(BB)-2A-Puro (PX459) V2.0: What's not in the name? Not included in this plasmid's name are...expresses Streptococcus pyogenes (Sp) Cas9 from a Cbh promoter. Cbh is a modified version of CAG promoter that...

...Staphylococcus aureus Cas9 (Sa-Cas) and deposited plasmid IF311: pMAGIC (R4-R3) NLS-Sa dCas9-NLS-LSD1. LSD1 ...types. They have also fused LSD1 to x-Cas9(3.7). x-Cas9(3.7) is a SpCas9 mutant that exhibits increased PAM... Find plasmids from this publication at Addgene. Additional Resources on the Addgene Blog Cas9 Activators... created pdCas9-Tet1-CD for targeted cytosine demethylation in mammalian cells. This plasmid is used with...same modifier, Fuw-dCas9-Tet1CD, is available from Rudolf Jaenisch’s lab in plasmid form or as ready-to-use...larger pMVP/pMAGIC cloning system, which contains Cas9 fusions for several epigenetic modifiers, and is...experience with these constructs in the comments! Find Plasmids for Epigenetic Modification   Leah Schwiesow...

...Addgene.org Find CRISPR Plasmids for Your Research Interested in light-inducible Cas9 activity? Check out ...et al., 2016). While Streptococcus pyogenes Cas9 (SpyCas9) is the most used and well studied CRISPR system... study, the labs found that anti-CRISPR prevents Cas9 activity in HEK293 by reducing editing from ~30%...interact with CRISPR-Cas systems such as Cascade-Cas3, Cas9, Cas12, and Cas13 (Marino et al., 2020). Some Acr...ways: Inhibit DNA binding Example:  AcrIIA4 blocks Cas9’s interaction with the PAM site (Dong et al., 2017... crRNA loadingExample: AcrIIC2 interactions with Cas9 interferes and prevents the correct assembly of ... AcrIIC1 binds to the HNH endonuclease domain of Cas9 and prevents target DNA cleavage (Harrington et ...

...out our CRISPR Guide Find Plasmids for Cas9 Purification Find CRISPR Plasmids for Mammalian Expression ...editing. How to use Addgene plasmids for Easi-CRISPR You can use Addgene plasmids to create a repair template...of Addgene plasmid options for templates - see the example at right using blue flame plasmid pmScarlet_...in Figure 2.  You can also use Addgene plasmids to purify Cas9 protein. The table below contains some ...desired insert (e.g., mScarlet).   Plasmid ID Plasmid Name Tags 69090 pMJ915 MBP (N ... 47327 pET-28b-Cas9-His 6xHis (C terminal); NLS (C terminal) 62933 pET-Cas9-NLS-6xHis 6xHis...pre-CRISPR was very arduous. First, you’d construct a plasmid with your desired changes, long homology arms and...

...sequence targeted by the Cas9 nuclease. The Streptococcus pyogenes Cas9 (SpCas9) requires an NGG PAM to...highlight a subset of the new plasmids in the repository through our hot plasmids articles. These articles ...recent plasmid deposits and we hope they'll make it easier for you to find and use the plasmids you need...range of CRISPRCas9 by engineering SpCas9 Article contributed by Shreya Vedantam CRISPR/Cas9 is widely... were previously difficult. Find SpCas9 and Target-AID-NG plasmids at Addgene! Nishimasu H et al., Science...need. If you'd ever like to write about a recent plasmid deposit please sign up here.        New toolkit...  The Kanemaki lab previously developed a CRISPR/Cas9 based method to tag endogenous proteins in HCT116...