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Showing: 101 - 120 of 124 results
  1. CRISPR 101: Cas9 vs. The Other Cas(s)

    Type
    Blog Post
    Published
    Dec. 8, 2022, 2:15 p.m.
    ...good reason. It is guided by an RNA molecule, the gRNA, to a complementary site in the genome where it ...in one direction. Cas3 is thus not helpful for designer genome edits, but it is effective at wiping out...
  2. Plasmids 101: Modular Cloning Applications and Kits

    Type
    Blog Post
    Published
    May 14, 2024, 1:15 p.m.
    ...many MoClo kits are designed with specific model organisms in mind, others are designed for flexibility. ...Synthetic biology in bacteria MoClo is commonly used to design TUs and multi-TU constructs for synthetic biology.... phaffii, then the MoClo YTK Kit specifically designed for S. cerevisiae is at your service (Lee et al...repurposed for CRISPR applications (gene insert = Cas9 + gRNA), Addgene distributes specialized CRISPR kits too... the Multi-Kingdom (MK) Golden Gate system was designed to work in fungi, bacteria, protists, plants, ...E. Coli Part Library Enable Rapid Combinatorial Design for Synthetic and Traditional Biology.” ACS Synthetic...Mammalian Modular Assembly Toolkit for the Rapid Design and Production of Diverse Expression Vectors.” ...
  3. dTAG - You're it!

    Type
    Blog Post
    Published
    June 21, 2018, 2:06 p.m.
    ...Conditional Mouse Models CRISPR 101: Cas9 Nickase Design and Homology Directed Repair Plasmids for endogenous...CRISPR plasmids for protein tagging Find validated gRNAs ...
  4. SARS-CoV-2/COVID-19 Detection Methods Based on CRISPR/Cas

    Type
    Blog Post
    Published
    May 5, 2020, 1:15 p.m.
    ...one temperature. Two Cas12a-crRNA complexes are designed, each binding to one strand of the reverse-transcribed... Cas13, upon finding complementarity between the gRNA and a given fluorescently labelled substrate, gets... E and the N2 gene of SARS-CoV-2. If the Cas12a-sgRNA complex binds to the target sequences, Cas12a activity...Fluorescently labelled dCas9 complexes containing sgRNA that have no mismatches bind to the immobilised ...
  5. CRISPR-mediated Plant Base Editors

    Type
    Blog Post
    Published
    Jan. 3, 2019, 1:35 p.m.
    ...expression system. We use a single polycistronic tRNA-gRNA (PTG) gene system to clone multiple protospacers... SpCas9-VRER TadA-TadA* NGCG 8  Tips for designing base editing experiments in plants Choose a base...
  6. CRISPR 101: Epigenetics and Editing the Epigenome

    Type
    Blog Post
    Published
    June 24, 2020, 5:45 p.m.
    ...certainly not the only CRISPR-based technology designed to alter gene expression. Fusing dCas9 to a transcriptional...Check out Our CRISPR Guide Pages Find Validated gRNAs to Target Your Genomic Locus of Interest Browse ...
  7. CRISPR 101: Cytosine Transversion Editors

    Type
    Blog Post
    Published
    March 25, 2025, 1:15 p.m.
    ... Acronym Full name Notes CRISPR terms gRNA/sgRNA Guide RNA RNA used by Cas9 to locate a matching... the DNA strand that does not base pair with the gRNA. Base editors target this “non-target strand.” To... predicting CGBE editing outcomes and assisting sgRNA selection is available at http://www.sunlab.fun:... in different cell types, available at www.crisprbehive.design. CGBEs fused to pioneer factors to improve...
  8. New Optimized Genome-wide CRISPRko, CRISPRi, and CRISPRa Libraries

    Type
    Blog Post
    Published
    Oct. 4, 2018, 12:44 p.m.
    ...CRISPR library with 6 sgRNAS, highlighting the benefit of sgRNA design in CRISPR libraries. Thus, the Brunello...2018). These libraries utilize optimized sgRNAs that were designed based on the rules identified in Doench...gene and 1,000 non-coding control sgRNAs. This library was designed to improve on-target activity while...confirming again that sgRNA design plays a significant role in library efficiency. Try the Dolcetto library...uses an improved activator design that consists of inactive Cas9-VP64, a sgRNA with two MS2 RNA aptamers.... Doench, John G., et al. "Rational design of highly active sgRNAs for CRISPR-Cas9–mediated gene inactivation...MC4262738. 2. Doench, John G., et al. "Optimized sgRNA design to maximize activity and minimize off-target...
  9. Rewiring Metabolic Circuitry with CRISPR RNA Scaffolds [Video]

    Type
    Blog Post
    Published
    April 7, 2015, 4:21 p.m.
    ...stepwise protocol on designing and using RNA scaffolds: Delebecque, C. J. et al. Designing and using RNA scaffolds... of transcriptional regulator or the number of designed scaffold binding sites. With hundreds of characterized...tunability of transcription is possible. From a design perspective, this is appealing since the RNA scaffold...pairing, allowing for rational, straightforward design. Since the technique relies on base pairing, it...and multidirectional multiplex control via scRNA design is readily apparent in metabolic engineering. The...targeted site. Multiple scaffold RNAs can be designed to allow simultaneous, multidirectional and tunable...activity coupled with a customizable single guide RNA (sgRNA) that bears complementarity to a 20bp target sequence...
  10. Uncovering Ancestral Bias in CRISPR Research

    Type
    Blog Post
    Published
    Nov. 29, 2022, 2:15 p.m.
    ...they designed a tool that could analyze CRISPR sgRNAs and report the likelihood of any given sgRNA having... guides used in the screens they analyzed were designed to have a perfect match to the reference genome...Brown from Broad's Genetic Perturbation Platform to design a new library that is agnostic to ancestry which...CRISpick algorithm to prevent guides from being designed that target regions with high genomic variability...actually an artifact introduced by bias within the design of the experiment or dataset itself. It is important...scientists to be aware of and actively use tools designed to help reduce or eliminate bias, just like the...indicating loci where SNPs reside on sgRNA target sequences for sgRNAs that target ancestry-associated genes...
  11. 28 Hot Plasmid Technologies from 2015

    Type
    Blog Post
    Published
    Dec. 23, 2015, 3:30 p.m.
    ... endogenous loci using validated gRNAs from Addgene and well designed homology directed repair templates...cell events Three years ago, Brian Kuhlman’s lab designed photoswitchable dimers by fusing the SsrA peptide...the authors recently used computational protein design, phage display and high throughput binding assays...gene is inserted. It is important that primers be designed to minimize the possibility of dimer formation...platform for imaging and flow cytometry applications Designing customized fluorescent reporters can be challenging...preposterous. Luckily, the Pierre Neveu laboratory designed a new iterative, chaining-based cloning method...the field of all-optical electrophysiology is designing the perfect voltage indicator and optogenetic ...
  12. Pooled CRISPR Libraries Offer Genome-Wide Control for Large-Scale Functional Screens

    Type
    Blog Post
    Published
    Feb. 24, 2015, 7:50 p.m.
    ...first generation of CRISPR-Cas9 plasmids were not designed with gene activation in mind. “We had not managed...from the structure to guide and improve activator design,” she said. “Before it was a little like tapping...instead of at the protein’s C terminus. With that new design in place, Konermann immediately saw an order of... activator (CRISPRa) sgRNA library uses the sunCas9 system and contains 10 sgRNAs for each transcription...nucleolytically inactive Cas9-VP64 fusion; 2. A sgRNA incorporating two MS2 RNA aptamers at the tetraloop...gain-of-function screening when combined with a compact pooled sgRNA library. Our SAM-mediated screens exhibited a high...transcriptional repressor (CRISPRi) library contains 10 sgRNAs for each transcription start site in those 15,977...
  13. Hot Plasmids: Fall 2024

    Type
    Blog Post
    Published
    Nov. 21, 2024, 1:30 p.m.
    ...promising tool for future structure-guided drug design and studies of protein ubiquitination and degradation...CRBNmidi plasmid here!   Kroupova, A. et al. (2024). Design of a Cereblon construct for crystallographic and...specifically for C. elegans (Cao et al., 2024). The team designed coding sequences for mScarlet3 and mScarlet-I3...recombination methods). By using mCherry for selection of sgRNA plasmid transformants, they avoid M. abscessus’ ...Using an inducible Cas9 expression and removing the sgRNA plasmid after identifying successful knockouts limits... KanR. This strain is then transformed with the sgRNA cassette on a plasmid expressing mCherry and resistance... of the target gene. Lastly, curing the mCherry-sgRNA plasmid leaves an edited strain carrying Cas9 to...
  14. Hot Plasmids and Viral Preps - September 2021

    Type
    Blog Post
    Published
    Sept. 21, 2021, 1:15 p.m.
    ...without end-point sequencing assays.  This tool was designed by putting together the coding sequence of a mCherry...MYC-CRISPR library targets E-boxes genome-wide. It was designed based on MYC-ChIP-seq data from several MYC-dependent...Veening is now available with one sgRNA per operon or gene. The sgRNA pool can also target core operons... cell lines. The Turner Lab Human messenger-RBP sgRNA Library targets human mRNA binding proteins with...operons in other pneumococcal strains. The BARBEKO sgRNA library uses CRISPR cytosine base editors to disrupt...
  15. A History of Genome Engineering in Popular Culture

    Type
    Blog Post
    Published
    Feb. 25, 2020, 2:15 p.m.
    ...domain (FokI). Zinc finger nucleases were first designed in 2005. The DNA-binding domain can be engineered...editors, new amino acid recognition sites had to be designed each time we wanted to target new genomic sites...chasing an anti-villain geneticist named Zobrist who designs a virus that can potentially kill one-third of ... in genome editing is prime editing, which was designed in 2019. It’s based on a prime editor which is... Using an elongated template + guide RNA called pegRNA (prime editing RNA), the prime editor can install...
  16. Prime Editing: Adding Precision and Flexibility to CRISPR Editing

    Type
    Blog Post
    Published
    Jan. 13, 2025, 9:49 p.m.
    ...nicking increases indel formation slightly. Designing the sgRNA with a spacer that only binds the edited ...different constraints and affect how you select and design your prime editing tools. Here, we’ll briefly cover...engineered pegRNA” or epegRNA. Although the addition of the RNA pseudoknot sometimes altered epegRNA expression...does just this by including an additional sgRNA. Using this sgRNA, the prime editor nicks the unedited strand...4.0 license. epegRNAs: Structured RNAs with improved stability Traditional sgRNAs are protected from...degraded, the truncated pegRNA can still guide Cas9 and compete with full pegRNAs for access to the target... compared to PEmax with normal pegRNAs, but combining PE7 with epegRNAs resulted in similar or reduced...
  17. A Needle in a Base-Stack: Cas9 Structural Biology

    Type
    Blog Post
    Published
    June 4, 2024, 1:15 p.m.
    ...Have you ever designed a CRISPR guide RNA and wondered why it is limited to only 20 bases, or why it’...understand the parameters of CRISPR experimental design. Let’s dive into some structural biology! Major...Once supplied with a guide RNA — whether it’s an sgRNA or a crRNA:tracrRNA duplex — Cas9’s two lobes move...yellow; REC lobe, light blue; bridge helix, purple; sgRNA, dark blue.   The REC lobe binds tightly to ...yellow; REC lobe, light blue; bridge helix, purple; sgRNA, dark blue.   DNA sequence recognition Once ...yellow; REC lobe, light blue; bridge helix, purple; sgRNA, dark blue; target DNA strand, light gray; non-target... and marks the transition back to a DNA duplex. sgRNA, dark blue; target DNA strand, light gray; non-target...
  18. Transgenic Organisms, Cas9 Gene Drives, and Appropriate Safeguards

    Type
    Blog Post
    Published
    May 22, 2015, 4:58 p.m.
    ...one mistake can be enough. Reversal drives are designed to overwrite a previous gene drive and thereby...cassette encoding the cas9 gene and single guide RNAs (sgRNAs) with appropriate flanking homology into a germline...don't use a DNA vector that encodes both Cas9 and sgRNA. What if I want to work with gene drives? Then do...organisms but not wild organisms. For example, an sgRNA-only drive will spread exclusively through populations...express Cas9 from an unlinked locus, while a Cas9+sgRNA drive targeting a synthetic sequence will only spread...restore the wild-type sequence (save for the residual sgRNAs and possibly cas9 gene). An immunizing reversal...
Showing: 101 - 120 of 124 results