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We narrowed to 35 results for: pyogenes Cas9

Showing: 1 - 20 of 35 results
  1. The PAM Requirement and Expanding CRISPR Beyond SpCas9

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    ...use of novel S. pyogenes Cas9 variants with varying PAM sequences, 2) the use of Cas9 homologs derived...as a binding signal for Cas9 and this sequence is a strict requirement for Cas9-mediated DNA cleavage. ...While PAM sequences for the commonly used S. pyogenes Cas9 (3'-NGG) are abundant throughout the human genome...derived from species other than S. pyogenes, and 3) the use of non-Cas9 enzymes. (For more details on the PAM...check out this video from IGI!) Synthetic S. pyogenes Cas9s with novel PAM recognition In 2015, Keith Joung...screens in bacteria to identify mutants of S. pyogenes Cas9 that were able to cleave target DNA sequences...2020). Characterization of Cas9 from additional bacterial species Many more Cas9 orthologs have been isolated...
  2. A Needle in a Base-Stack: Cas9 Structural Biology

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    ...Streptococcus pyogenes.   Figure 2:  Crystal structure of S. pyogenes Cas9 in the apo state (PDB ID...the basic parts of the Cas9 enzyme.   Figure 1: A cartoon depiction of Cas9’s two major lobes, REC...   Unbound Cas9 Now that we know what we’re looking at, let’s peek at unbound—“apo”—Cas9 from Streptococcus...   Figure 3: Crystal structure of S. pyogenes Cas9 bound to guide RNA (PDB ID 4ZT0), shown opaque...isn’t in place yet.     Figure 4: S. pyogenes Cas9 in the apo state (PDB ID 4CMP, top) compared...residues in the CTD can get cozy with DNA. S. pyogenes Cas9 recognizes the PAM sequence 5’-NGG-3’, where...strand is mismatched.   Figure 5: S. pyogenes Cas9 bound to guide RNA and target DNA (PDB ID 7S4X...
  3. A New Generation of Adenine Base Editors Improves Editing in Primary Human Cells

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    ...replaced S. pyogenes Cas9 in the ABE complex with PAM-variant Cas9 proteins: the S. pyogenes NG-Cas9 (PAM: ... constructs using a catalytically “dead” S. pyogenes Cas9 (dC9-ABE8.x-m/d). The dC9-ABE8.x-m/d constructs...adenine base editors The most commonly used S. pyogenes Cas9 requires the target site in the genomic DNA ...frequency more than 90% compared to ABE7.10. Choosing Cas9 proteins to increase the targeting scope of adenine...: NG) to create NG-ABE8.xm/d and the S. aureus Cas9 (PAM: NNGRRT) to create Sa-ABE8.x-m/d. With these ...frequency over ABE7.10. The ability to use non-standard Cas9 in the ABE8 complexes enables a broader targeting...about another evolved base editor: ABE8e Read about xCas9, a CRISPR variant with PAM flexibility Resources...
  4. 15 Years of Addgene: The Top 15 Plasmids

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    ...Addgene!) pX330-U6-Chimeric_BB-CBh-hSpCas9 - The S. pyogenes Cas9 (SpCas9) has been widely popular in genome... with lentiCas9-Blast or with cell lines already expressing Cas9. Find lentiGuide-Puro. pSpCas9n(BB)-2A-GFP... Similar to pSpCas9(BB)-2A-Puro (PX458), pSpCas9n(BB)-2A-GFP (PX461) expresses both a Cas9 protein and...Find pMD2.G. pSpCas9(BB)-2A-GFP (PX458) - This plasmid from the Zhang lab expresses Cas9 from Streptococcus...and a gRNA. But instead of Cas9, this plasmid expresses Cas9n (a D10A nickase mutant) to nick, rather than...Streptococcus pyogenes with an invariant sgRNA scaffold and cloning sites for inserting the guide sequence (...vector also from the Zhang lab is used to deliver Cas9 and your gRNA of interest into mammalian cells. ...
  5. CRISPR References and Information

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    ... sites for S. pyogenes Cas9, S. aureus Cas9, S. thermophilus Cas9, N. meningitidis Cas9, or Cas12a from...vectors using ssDNA oligos p201G Cas9 ; p201B Cas9 ; p201H Cas9 ; p201N Cas9 ; pUC gRNA Shuttle PDF, 500 KB...CRISPR RNA array: Cas9 (pX260) or Cas9 D10A (pX334) ; tracrRNA: Cas9 (pX330) or Cas9 D10A (pX335) PDF,...binding and can work for S. pyogenes , S. thermophilus , or N. meningitidis Cas9 PAMs. Currently supports...118 KB Church gRNA design and cloning for Cas9 orthologs Cas9 plasmids PDF, 107 KB Chen and Wente Zebrafish...vitro transcription, injection gRNA core ; Cas9 ; optimized Cas9 PDF, 66.8 KB Fujii gRNA design and cloning... Injection and selection for Cas9-triggered homologous recombination Cas9-sgRNA target construct ; pMA122...
  6. Hot Plasmids - March 2019 - Anti-CRISPR, 2in1 Cloning, Fluorescent Voltage Indicators, and Photoswitchable Proteins

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    ...CASANOVA? It works with the S. pyogenes Cas9, dCas9-effector fusions, and xCas9, and requires no additional... II CRISPR systems including the popular S. pyogenes Cas9 (Rauch et al., 2017, Hynes et al., 2017). However...episode of Hot Plasmids! Optogenetic control of CRISPR-Cas9 by CASANOVA Article contributed by Cary Valley  ..., they have developed a system to control CRISPR-Cas9 activity using blue light (Bubeck et al., 2018)...., inhibiting function of Acr. This allows CRISPR-Cas9 to function on its target.  They name their most...Acr-LOV fusion protein inhibitor CASANOVA for “CRISPR-Cas9 activity switching via a novel optogenetic variant...
  7. What's New in CRISPR - Winter 2018

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    ...dual-nuclease Cas9-Cas9 chimeras Scot Wolfe’s lab has developed dual-nuclease Cas9-Cas9 chimeras with ...compared to monomeric Cas9’s. Read the paper in Nature Communications Find the Cas9-Cas9 chimera plasmids...optogenetic control of CRISPR-Cas9. By combining AcrIIA4, a Streptococcus pyogenes Cas9 inhibitor, with the LOV2...Anti-CRISPR proteins for optogenetic control of CRISPR-Cas9 Anti-CRISPR proteins that inhibit type II CRISPR...
  8. Zhang Lab CRISPR Page

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    ...vector system uses S. pyogenes Cas9 (SpCas9), using one vector to express SpCas9, and another to express...mammalian cells by co-expressing the S. pyogenes Cas9 (SpCas9) nuclease along with the guide RNA. For ...Return to top Cas9 SAM transcriptional activation plasmids and screening library CRISPR/Cas9 Synergistic...of cells and nuclei. Return to top AAV - Cas9 mouse CRISPR-Cas9 is a versatile genome editing technology...constitutively expressing Cas9 knockin mice (Platt et al ., Cell 2014). In these mice the CRISPR-Cas9 system can be...constitutively Cas9-expressing mouse. Described here are AAV vectors that can be combined with Cas9 in a wide...are below. The Cas9 knockin mouse can be purchased from Jackson Labs: Cre-dependent Cas9 mouse Constitutively...
  9. Lentiviral Prep Service

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    ... 52962 lentiCas9-Blast Sp Cas9 Cut Blasticidin Expresses human codon-optimized S. pyogenes Cas9 protein...Root Cas9 Lentivirus Cas9 viruses can be used to interrogate the genome in a variety of ways. Cas9 proteins...backbone. Zhang Cas9 and Accessories for Activating Gene Expression Catalytically-dead Cas9 (dCas9) can be fused...plasmids resource page . Cas9 for Editing Genomic Sequences To perform genome edits, Cas9 nuclease is used to...Browse In-Stock Lentivirus Pooled CRISPR Libraries Cas9 Pooled Barcoding Libraries Control Addgene's lentiviruses...Resistance Activity PI 61422 dCAS9-VP64_GFP dCAS9 (D10A, H840A) none Expresses dCAS9-VP64 activator with 2A ...-targeting controls. This backbone contains SpCas9. SpCas9 and 76,441 unique sgRNAs targeting 19,114 human...
  10. What's New in CRISPR - December 2019

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    ...) to a catalytically impaired Streptococcus pyogenes Cas9. They called this editor Target-ACE (adenine...toolkit for epitope tagging Lentiviral capsid-based Cas9/gRNA ribonucleoprotein delivery Cytosine deaminase...Read the paper in bioRxiv Find Target-ACE   CRISPR/Cas9-based toolkit for epitope tagging in neurons Harold... the paper in bioRxiv Find the ORANGE toolkit   Cas9/gRNA ribonucleoprotein delivery by lentiviral capsid-based...capsid-based bionanoparticle Transient expression of CRISPR/Cas9 in cells has advantages like reduced off-target ...off-target activity and decreased immune response to Cas9. Recently, Baisong Lu’s lab developed a lentiviral capsid-based...capsid-based bionanoparticle system for packaging Cas9/gRNA ribonucleoproteins for transient expression...
  11. Generating Mouse Models Using CRISPR/Cas9

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    ...editing system derived from Streptococcus pyogenes. An alternative Cas9, from Streptococcus aureus, is as effective...effective at editing mouse embryos as Cas9 from S. pyogenes and has the advantage of being smaller (Zhang...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...
  12. Your Top Requested Plasmid in 2016!

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    ...plasmid expresses Streptococcus pyogenes (Sp) Cas9 from a Cbh promoter. Cbh is a modified version of CAG promoter...has tested in a variety of mammalian cell lines. Cas9, of course, is the key component of most CRISPR ...cleaving" peptide causes the ribosome to translate Cas9-2A and the Puromycin resistance gene as separate...Ann, et al. "Genome engineering using the CRISPR-Cas9 system." Nature protocols 8.11 (2013): 2281-2308... un-tagged versions of SpCas9 and further variants replace SpCas9 with SpCas9n (nickase), which nicks ... express both SpCas9 and your gRNA in a variety of mammalian cell types. Purpose  SpCas9 This plasmid ... as is obvious from our most requested plasmid, SpCas9 is still going strong as the basis for many genome...
  13. Some Like it Hot: Thermostable GeoCas9

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    ...loving) bacteria, such as Streptococcus pyogene’s SpCas9. These Cas9 proteins don’t work well at high temperatures... 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 ...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... Cas9 is the genome editing tool of choice for a number of model organisms: mammalian cells, yeast, drosophila...
  14. Components of CRISPR/Cas9

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    ...sequence, Cas9 will neither bind nor cut the target. Cas9 homologs from different organisms or Cas9 mutants...basic level, CRISPR/Cas9 genome editing systems use a non-specific endonuclease (Cas9 or closely related...the PAM sequence. Cas9 Species/Variants and PAM Sequences Species/Variant of Cas9 PAM Sequence ...genomic target for Cas9, and the tracrRNA which acts as a scaffold linking the crRNA to Cas9 and facilitates... to direct Cas9 to a specific genomic locus and the scaffolding sequence necessary for Cas9 binding. When...CRISPR/Cas9 for genome editing, researchers simply need to express a gRNA designed to direct Cas9 to their...tracrRNA and Cas9, bind to these transcripts and C) cleave them leaving mature crRNAs bound to the Cas9/tracrRNA...
  15. What's New in CRISPR - March 2020

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    ... lower average Cas9-independent off-target DNA editing, ~5–50-fold lower levels of Cas9-dependent off-...Caulobacter genes using a catalytically dead Cas9 (dCas9) derived from Streptococcus pasteurianus  or ...s lab identified and validated CBEs with reduced Cas9-independent deamination. They generated these editors...Streptococcus thermophilus (the popular Streptococcus pyogenes system does not work well in Caulobacter). To ...fluorescent dCas9-KRAB and dCas9-VPR for quantifying and tracking cells that express both the dCas9 construct...Saccharomyces cerevisiae. The system consists of dCas9, the mammalian transcriptional repressor Mxi1, and...accessible and the complex enters the nucleus where dCas9-Mxi1 can repress gene expression. In the dark, the...
  16. Choosing a CRISPR Nuclease: Site Accessibility, Specificity, and Sensitivity

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    ...frequently used Cas9, spCas9 from Streptococcus pyogenes, this sequence is 3’-NGG. But Cas9s found in other...assessment of the off-target activity of Cas9. This can occur when Cas9 cleaves a site that is not a perfect...the PAM specificity of Cas9s isolated from different organisms and engineered Cas9 variants that were able...consideration when choosing a Cas9 is balancing specificity and sensitivity. Wild-type Cas9 exhibits high on-target... directed evolution to generate Sniper-Cas9 resulting in a Cas9 with improved specificity. They compared...on-site and off-site activity of Sniper-Cas9 to different Cas9 variants using gRNAs of different lengths...loci and gRNA lengths. Recent alternatives to Cas9 While Cas9 remains the most widely used CRISPR nuclease...
  17. Hot Plasmids - September 2019 - CRISPR, Auxin Inducible Degradation, MerMAID Channelrhodopsins, and Genome Looping

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    ...sequence targeted by the Cas9 nuclease. The Streptococcus pyogenes Cas9 (SpCas9) requires an NGG PAM to...range of CRISPRCas9 by engineering SpCas9 Article contributed by Shreya Vedantam CRISPR/Cas9 is widely...  The Kanemaki lab previously developed a CRISPR/Cas9 based method to tag endogenous proteins in HCT116...widely used genome editing tool. However, Cas9’s endonuclease activity can be limited by the need for a specific...recognize the target. Osamu Nureki’s lab engineered SpCas9 (SpCas9-NG) with relaxed preferences for the third ...NGG. In addition to the engineered SpCas9, they also fused the SpCas9-NG with the activation-induced cytidine...cells. The increased versatility of the engineered SpCas9-NG and its variants can be used to engineer specific...
  18. CRISPR Guide

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    ...Plasmids: Purify Cas9 Alternatives for CRISPR Genome Engineering S. pyogenes Cas9 (SpCas9) is the most commonly... 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...Species/Variant of Cas9 PAM Sequence* Streptococcus pyogenes (SP); SpCas9 3' NGG SpCas9 D1135E variant 3...design, engineered Cas9s can enhance CRISPR specificity. SpCas9 (from Streptococcus pyogenes ) is the most ...more Cas9 fusion tools later in the guide. Figure 3: Overview of Cas9n. Increasing fidelity of Cas9 Researchers...enhanced specificity by engineering Cas9 into high fidelity Cas9s (hfCas9) . There is currently no defined...
  19. Truncated gRNAs for Regulating Gene Expression

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    ... 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...repression with nuclease-competent Cas9. When complexed with a truncated gRNA, Cas9 is still able to bind DNA ...tight control over Cas9 nuclease activity while eliminating the reliance on orthogonal Cas9 species. Within...capability, and this nuclease-null or “dead” Cas9 (dCas9) variant can then be fused to effector domains...importantly, most Cas9 orthologs are less well characterized than the conventionally used SpCas9 (derived from...nuclease-competent Cas9, obviating the need to generate new cell lines or transgenic animals expressing dCas9 as a ...
  20. Adenoviral Delivery of CRISPR/Cas9 Aims to Expand Genome Editing to Primary Cells

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    ... out the plasmids at Addgene: pAdSh.PGK.Cas9 (expresses S. pyogenes Cas9 from the PGK promoter) and U6...DNA Adenoviral CRISPR/Cas9 genome editing tools can also be used to deliver Cas9 and DNA templates in ... CRISPR/Cas9 research! To find more information about the adenoviral delivery of CRISPRS/Cas9 using the...Genome Editing of Pten by CRISPR/Cas9 in Mouse Liver in Spite of Cas9-Specific Immune Responses. Human...left) and targeted DNA knock-in (right) by CRISPR/Cas9. Adenoviral CRISPR vectors (left) or CRISPR vectors...transduced to target cells. Within target cells, Cas9 machinery is transiently expressed and binds to ...; made with BioRender.   Delivering gRNA and Cas9 using adenoviral vectors As compared to other viral...
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