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  1. What's New in CRISPR - November 2021

    Type
    Blog Post
    ... enzyme with a fully active Cas9 enzyme. PE-Cas9 comprises an active Cas9 fused to the reverse transcriptase...Pyhtila One 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...and delivery of specific RNAs, such as Cre mRNA or Cas9 mRNA and sgRNA, in human and mouse cells. They further...with these modified gRNAs is comparable to that of SpCas9. The group also confirmed that the Cas12f1 and ...
  2. 15 Hot Plasmids from 2017

    Type
    Blog Post
    ..., 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)   ...type II CRISPR systems, which include S. pyogenes (Spy) Cas9, been identified. In Rauch, et al. 2016 the...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...the effects of dCas9 binding to a genomic locus, or limiting the amount of time that Cas9 is active in ...
  3. CRISPR 101: Targeting RNA with Cas13a (C2c2)

    Type
    Blog Post
    ... 27, 2020. CRISPR, and specifically Cas9 from S. pyogenes (SpCas9), is truly an exceptional genome engineering...Abudayyeh et al., 2016). In the endogenous CRISPR/Cas9 system, Cas9 uses both a tracrRNA and crRNA to facilitate...Perhaps the biggest difference between Cas13a and Cas9 is that Cas13a binds and cleaves RNA rather than...enzymes - Cas13a contains two HEPN domains, whereas Cas9 uses HNH and RuvC domains to cleave target DNA. ...roles for HEPN domains in other proteins. As with Cas9, mutating key residues in the Cas13a molecule results... Guide RNA Target PAM (PFS) Cleavage Mechanism Cas9 HNH, RuvC TracrRNA, crRNA DNA 5' NGG Specific...conformational changes in the Cas13a molecule. Like Cas9, Cas13a tolerates single mismatches between the ...
  4. Overcoming the AAV Size Limitation for CRISPR Delivery

    Type
    Blog Post
    ...one AAV, Cas9 must be made smaller. Previous attempts to “shrink” Cas9 include the use of St1Cas9 (~3.3 ...amino acids in length, Cas9 from Campylobacter jejuni (CjCas9) is the smallest Cas9 ortholog characterized...vehicle for Cas9. However, to allow for more room for regulatory sequences while still fitting Cas9 and its...equally potent Cas9 protein, the Zhang lab took a different approach. They analyzed over 600 Cas9 orthologs... aureus Cas9 (SaCas9, 1053 amino acids) displayed cleavage activity in mammalian cells. SaCas9 produced... tissues. However, packaging Streptococcus pyogenes (SpCas9) and a gRNA together (~4.2 kb) into an AAV...truncated Cas9. Unfortunately, certain drawbacks limit the utility of these systems: St1Cas9 requires ...
  5. CRISPR Guide

    Type
    Guide
    ...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 ...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...
  6. Popular Retroviral Vectors and Their Uses in Scientific Research

    Type
    Blog Post
    ...lentiviral backbone from the Zhang lab expressing S. pyogenes Cas9 and a gRNA cassette. It can be used to produce...catalytically inactive (dead), human codon-optimized Cas9 under the control of Murine Stem Cell retrovirus... (shRNA, miR-30-shRNA), mutation/editing (CRISPR-Cas9) or deletion (Cre), together with expression of ...and selection marker removal. CRISPR technology pdCas9-humanized (Plasmid #44246) Expression of a catalytically...
  7. CRISPR 101: Engineering the Plant Genome Using CRISPR/Cas9

    Type
    Blog Post
    ...systems, expression of S. pyogenes Cas9 or Cas9 variants (hereafter referred to as Cas9) and a single stranded... gRNA backbones also contain Cas9, which enables expression of both Cas9 and the gRNA off of the same ...Nuclease dead Cas9 (dCas9) based activators (such as dCas9-VP64) or repressors (dCas9-KRAB or dCas9-SRDX) can...get more information on multiplexing gRNAs here). Cas9 is commonly tagged with a nuclear localization sequence...targeting to the nucleus, and several codon optimized Cas9 variants have been created in an effort to increase...repress target genes in plant cells, respectively. Cas9 expression is commonly driven by plant-derived RNA...Examples of commonly used RNA pol II promoters for Cas9 expression include the ubiquitously expressing cauliflower...
  8. CRISPR-based Genome Editing Systems For Editing in E. coli

    Type
    Blog Post
    ...consists of one plasmid that expresses the S. pyogenes Cas9, a temperature-sensitive replicon for self-curing...), which we presume caused pTargetF to be cut by Cas9. This would result in the lack of recovered transformants...Editing in the Escherichia coli Genome via the CRISPR-Cas9 System. Appl Environ Microbiol 81:2506–2514 . https...2021) A modified pCas/pTargetF system for CRISPR-Cas9-assisted genome editing in Escherichia coli. Acta...edits. Once you have all the edits you want, cure pCas9 by growing the cells at 37 °C.     The new pEcCas...  The updates involved the following changes. In pCas9, we 1) replaced the promoter of gRNA-pMB1 with PrhaB...
  9. CRISPR Plasmids - Xenopus

    Type
    Collection
    ...Delivery Resistance Co-expressed Cas9 Depositing lab Cas9 species = S. pyogenes (PAM = NGG) 51306 pUC57-Simple-gRNA...designed for use in Xenopus. Cut Fully functional Cas9 enzymes designed to introduce a double-strand break...surrounding the DSB is introduced along with the Cas9 and gRNA plasmids, the cell may instead repair the...backbone T7 BsaI In vitro transcription none, need Cas9 plasmid Chen Do you have suggestions for other plasmids...Editing Other Applications Purify Tag Visualize dCas9-FokI Screen Pooled Libraries gRNAs Empty gRNA Vectors...
  10. CRISPR References and Information

    Type
    Collection
    ...vectors using ssDNA oligos p201G Cas9 ; p201B Cas9 ; p201H Cas9 ; p201N Cas9 ; pUC gRNA Shuttle PDF 488.6 ...CRISPR RNA array: Cas9 (pX260) or Cas9 D10A (pX334) ; tracrRNA: Cas9 (pX330) or Cas9 D10A (pX335) ; PDF...identifies putative target sites for S. pyogenes Cas9, S. thermophilus Cas9, or Cpf from your input sequence ...binding and can work for S. pyogenes, S. thermophilus or N. meningitidis Cas9 PAMs. Currently supports: ....2 KB Church gRNA design and cloning for Cas9 orthologs Cas9 plasmids PDF 104.1 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...
  11. CRISPR Plasmids - Zebrafish

    Type
    Collection
    ...Delivery Resistance Co-expressed Cas9 Depositing lab Cas9 species = S. pyogenes (PAM = NGG) 46759 pT7-gRNA ...none, need Cas9 plasmid Chen and Wente 42250 DR274 T7 BsaI In vitro transcription none, need Cas9 plasmid...Editing Other Applications Purify Tag Visualize dCas9-FokI Screen Pooled Libraries gRNAs Empty gRNA Vectors...
  12. CRISPR Plasmids - C. elegans

    Type
    Collection
    ...Co-expressed Cas9 Depositing lab Cas9 species = S. pyogenes (PAM = NGG) 47549 pDD162 (Peft-3::Cas9 + Empty ...need Cas9 plasmid Joung 46170 PU6::klp-12_sgRNA cU6 PCR (see paper) Transfection none, need Cas9 plasmid... none, need Cas9 plasmid Boxem 47941 pMB60 T7 BsaI In vitro transcription none, need Cas9 plasmid Boxem...sgRNA-scaffold SP6 AflII In vitro transcription none, need Cas9 plasmid Sternberg 177783 L4440_BioBrick-sgRNA T7...T7 BbsI, BsaI Ingestion by C. elegans none, need Cas9 plasmid Ristow Do you have suggestions for other...Editing Other Applications Purify Tag Visualize dCas9-FokI Screen Pooled Libraries gRNAs Empty gRNA Vectors...Promoter PI Publication Activate Catalytically dead dCas9 fused to a transcriptional activator peptide can...
  13. How to Design Your gRNA for CRISPR Genome Editing

    Type
    Blog Post
    ...protein-coding capacity of a locus. When using S. pyogenes Cas9 (SpCas9), potential target sites are both [5’-20nt-NGG... (inhibition) technologies – a nuclease-dead Cas9 (dCas9) is directed near the promoter of a target gene...with CRISPR technology is usually accomplished by Cas9-mediated dsDNA breaks: following a cut, the error-prone...even more exquisite for the so-called base editor Cas9, which makes DNA changes in the absence of dsDNA...2019) Agreement between two large pan-cancer CRISPR-Cas9 gene dependency data sets. Nat Commun 10: . https...Incidence of Off-Target Mutations in Individual CRISPR-Cas9 and TALEN Targeted Human Stem Cell Clones Detected...widely-used Cas enzyme, the development of SaCas9, NmeCas9, Cas12a enzymes, and engineered variants thereof...
  14. Analyzing CRISPR Editing Results with ICE from Synthego

    Type
    Blog Post
    ...Currently, ICE is configured for Cas9 fromStreptococcus pyogenes (SpCas9). ICE Score - The editing efficiency...from single or multiplex CRISPR-Cas9 double-strand DNA breaks using SpCas9. More features will be added ...Addgene Blog Browse our CRISPR featured topic page xCas9: Engineering a CRISPR Variant with Pam Flexibility...
  15. CRISPR Plasmids - Drosophila

    Type
    Collection
    ...Delivery Resistance Co-expressed Cas9 Depositing lab Cas9 species = S. pyogenes (PAM = NGG) 49410 pCFD3-dU6...transcription Virmilion none, need Cas9 plasmid Bullock and Port 49330 pAc-sgRNA-Cas9 dU6 BspQI Transfection Puromycin..., need Cas9 plasmid Bullock and Port 51026 U6-BbsI-crRNA dU6 BbsI Transfection none, need Cas9 plasmid...Plasmid Gene/Insert Promoter PI Publication Prime Edit Cas9 H840A nickase fused to a reverse transcriptase (...Injection or in vitro transcription Virmilion none, need Cas9 plasmid Bullock and Port 49411 pCFD4-U6:1_U6:3tandemgRNAs...pU6-BbsI-chiRNA dU6 BbsI Transfection none, need Cas9 plasmid O'Connor-Giles, Harrison, Wildonger 49408...Injection or in vitro transcription Virmilion none, need Cas9 plasmid Bullock and Port 49409 pCFD2-dU6:2gRNA dU6...
  16. CRISPR Plasmids - gRNAs

    Type
    Collection
    ...off-target effect. Which species or variant of Cas9 ( S. pyogenes , S. aureus etc.) was this gRNA sequence ...species or PAM binding variant of Cas9. For instance, wild-type SpCas9 must be used with targets that are...Editing Other Applications Purify Tag Visualize dCas9-FokI Screen Pooled Libraries gRNAs Empty gRNA Vectors...
  17. Zhang Lab CRISPR Page

    Type
    Collection
    ...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...
  18. CRISPR Plasmids - Yeast

    Type
    Collection
    ... In Resistance Co-expressed Cas9 Depositing lab Cas9 species = S. pyogenes (PAM = NGG) 49014 pRPR1_gRNA... Publication Purify A catalytically inactive Cas9 (dCas9) can be used to purify a region of genomic DNA...immunoprecipitate FLAG-tagged Cas9. Design your gRNA sequence to direct dCas9 to a specific locus, avoiding...handle_RPR1t pRPR1 HindIII S. cerevisiae LEU2 none, need Cas9 plasmid Lu Do you have suggestions for other plasmids...PI Publication Interfere Catalytically dead dCas9, or dCas9 fused to a transcriptional repressor peptide...Editing Other Applications Purify Tag Visualize dCas9-FokI Screen Pooled Libraries gRNAs Empty gRNA Vectors...Marker PI Publication Base Edit Catalytically dead dCas9 fused to a cytidine deaminase protein becomes a ...
  19. Lentiviral Prep Service

    Type
    Collection
    ... 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...
  20. Typing CRISPR Systems

    Type
    Blog Post
    ...–C, with the beloved SpCas9 (from Streptococcus pyogenes) belonging in II-A. Cas9 was the first to be ...first time. The discovery and application of CRISPR-Cas9 kicked off over a decade of frenzied interest in...while Class 2 use single protein Cas effectors, like Cas9. The Cascade complex doesn’t usually carry out the...type VI, each relying on a unique Cas effector — Cas9, Cas12, or Cas13. If you’d like to explore Class...most popular and well-known type, as this is where Cas9 falls. The mechanism of type II is, unsurprisingly... Figure 3: Schematic of the basic CRISPR-Cas9 mechanism, representing type II-A. Created with ...effectors and is one of the most popular alternatives to Cas9. Cas12 is unique because it can process multiple...
Showing: 21 - 40 of 44 results