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  1. Hot Plasmids - February 2022

    Type
    Blog Post
    ... small epitope tag (FLAG is eight amino acids, HA is nine), multiple repeats of the tag can recruit multiple...SNAP-tag, and HaloTag fusions, while the anti-HA frankenbodies include mEGFP, mCherry, and HaloTag. ...separately. The proteins, which are purified via histidine tags, are optimized for SDS-PAGE gels and can be...b) Schematic of anti-FLAG-FB-GFP binding to FLAG-tag H2B for nuclear localization. (c) Applications of...blotting, and more. Given the popularity of FLAG and HA tags, you may not even need to clone new constructs to...editing within a single expression cassette is advantageous to Cas9’s larger expression requirements (Figure...
  2. Plasmids 101: Secondary Nanobody Toolbox

    Type
    Blog Post
    ...column due to their N-terminal His14-bdNEDD8 tag. After several washes, this tag can be cleaved by the bdNEDP1...sacrifice and precludes genetic engineering of a tag or fusion with a reporter enzyme. For multicolor ...and decreases the distance between a fluorescent tag and the target antigen to about 2 nm, which can lead...antibody can be “labeled” by incubating it with a tagged nanobody. After this pre-incubation step, the primary...Label the Nanobodies: Purified nanobodies are then tagged with a fluorescent dye or HRP via maleimide-labeling...Control Protein Activity Learn more about protein tags Read about E. coli strains for protein expression... Structural Comparison Functional Comparison Advantages of Nanobodies How to Use the Nanobody Toolbox...
  3. CRISPR Guide

    Type
    Guide
    ...DNA. The system can use common tags, like 3xFLAG-tag, PA, and biotin tags, or an anti-Cas9 antibody. The...in mammalian cells include: SunTag system - co-expression of epitope-tagged dCas9 and antibody-activator...acid, turn a promoter on/off, or add small protein tags. Precise Modifications Using Homology Directed Repair...genetic modification ). Browse Plasmids: Endogenous Tagging CRISPR Base Editing To overcome low HDR efficiency...also be fused to the gRNA to recruit fluorescently-tagged RNA-binding proteins (RBPs). Multicolor CRISPR ...dCas9s (e.g. S. pyogenes dCas9 and S. aureus dCas9) tagged with different fluorescent proteins or by fusing...sequence specified by a particular gRNA. Epitope tag(s) are fused to dCas9 or gRNA for efficient purification...
  4. CRISPR Activators: A Comparison Between dCas9-VP64, SAM, SunTag, VPR, and More!

    Type
    Blog Post
    ...combines components of SAM and SunTag activators, fusing the epitope tag of SunTag with the P65-HSF activation..., Qi LS, Weissman JS, Vale RD (2014) A Protein-Tagging System for Signal Amplification in Gene Expression...popular activation methods (VPR and SunTag) (Chavez et al., 2016). SunTag Description Rather than using a ...activation levels are similar to that of SunTag. An advantage to this method compared to other notable...-engineer components of Cas systems themselves. SunTag, SAM, and VPR have all shown significant improvements...a single copy of VP64 per each dCas9, SunTag uses a repeating peptide array to fused with multiple copies...to be recruited per targeted gene. Performance SunTag performs better than first generation activators...
  5. Identifying Sequence Elements with SnapGene's Feature Database

    Type
    Blog Post
    ... and conceived SnapGene because he needed it for his own lab.     Aline Glick is VP of Product Management...beginning, shepherding a new product from the idea stage through all of its post-launch iterations.     Additional...
  6. The Crispr Babies Saga Shows the Need for Action, Not More Delays

    Type
    Blog Post
    ...academic journal for exactly the critiques leveled at his CCR5 project. It was recognized as an unethical experimentation..., in vitro research, animal models, and several stages of human clinical trials. This model also demonstrates...to argue otherwise). To be sure, throughout the history of medical research, there have always been people...
  7. Hot Plasmids - March 2020 - base editors, GEVI, MoClo, and optogenetics

    Type
    Blog Post
    ...as well as cell lineage studies. Eisenhoffer and his colleagues evaluated CreLite for cell tracing using... encoded voltage indicator Article contributed by Shreya Vedantam Genetically encoded voltage indicators...GEVIs) are proteins that detect and output the voltage changes in neural activity when paired with appropriate...appropriate fluorescent optics. Existing red fluorescent voltage indicators, however, fall short compared to GFP-based...containing a red-shifted Ace-mScarlet, a fusion of a voltage-sensitive inhibitory rhodopsin (Ace2N) with the...amino acid linker between them. The Ace-mScarlet voltage indicator works like many FRET-opsin GEVIs. With...Figure 2: Ace-mScarlet is a fusion between the voltage-sensitive inhibitory rhodopsin Ace2N and mScarlet...
  8. Hot Plasmids - March 2019 - Anti-CRISPR, 2in1 Cloning, Fluorescent Voltage Indicators, and Photoswitchable Proteins

    Type
    Blog Post
    ...binary 2in1 vectors with all possible combinations of tag orientation (NN, NC, CN, and CC). The 4 kits also...fluorescent voltage indicator Archon Article contributed by Shreya Vedantam  Listen to the voltage indicator...turned to genetically encoded voltage indicators. To expand the voltage indicator toolbox, Ed Boyden’s...fluorescent voltage indicator. Archon1 can embed itself into the cell membrane where cell voltage can then...coordinate emotions, thoughts, and behavior. Historically, scientists study the electrical activity in...vectors (pUC57-L1L4 and pUC57-L3L2) that offer the advantage of using restriction digest cloning to introduce...
  9. No Llamas Required - Synthetic Nanobodies Against Membrane Proteins

    Type
    Blog Post
    ...which attaches a Myc-tag and a His6-tag to the end of each sybody candidate. These tags are used in a final...antibodies bound to an ELISA plate to capture Myc-tagged sybodies. Then, the biotinylated target protein...pBXNPHM3 expression plasmids for the production of tag-free proteins for further characterization and analysis...Walter et al., 2020). No llamas required. The advantages of synthetic nanobodies Nanobodies are small ...step using ribosome display because it has the advantage of starting out with a larger initial starting...
  10. Synthesized by Ginkgo Bioworks, Shared by Addgene: SARS-CoV-2 Plasmids for Many Expression Systems

    Type
    Blog Post
    ...optimized, untagged, cleavage sites (thrombin and TEV), and C-terminal tags (StrepII, 3xFLAG, 6xHIS, MBP, ...expression constructs contain protein coding genes, tags, truncations, and codon optimizations similar to... downstream experiments and offer flexibility in tag, cleavage, codon usage, and expression system. Mammalian...expression vector are also available. These contain no tags and are intended to be used in the production of...Resources Page! References Fukushi S, Watanabe R, Taguchi F (2008) Pseudotyped Vesicular Stomatitis Virus...
  11. Using CRISPR/Cas9 to Edit Disease Out of the Genome

    Type
    Blog Post
    ...diseases, Alzhiemer’s disease (AD).  Troy Rohn and his lab are researching a way to treat AD using CRISPR...of the cystic fibrosis report. “This is a big advantage over induced pluripotent stem cells, which need...
  12. Kiran Musunuru on the Newest TALEN Genome-Editing System

    Type
    Blog Post
    ...the kit now makes possible, and how it compares to his CRISPR/Cas9 system. Addgene: For people unfamiliar...together, there are occasional errors. That can be advantageous if you are trying to knock out a gene. One can...modeling in stem cells. Addgene: Tell me about the history. How had investigators done this kind of work before...
  13. Quick Guide to Working with Drosophila Part 3: Genome Engineering in Flies

    Type
    Blog Post
    ...our guest blogger Jon Chow. Jon Chow is finishing his immunology PhD at Harvard University. He has had ...transgene ends up (1): Random insertion has the advantage that you can get varying expression levels of ...derivatives suppress TH17 cell differentiation by antagonizing RORγt activity. Nature. 472, 486–90 (2011). ...
  14. Human Germline Editing Using CRISPR

    Type
    Blog Post
    ...paper to understand what Shoukhrat Mitalipov and his colleagues have achieved, and how the field will ... the edited embryos proceeded to the blastocyst stage at similar rates to untreated controls. Ma et al...results in fewer eggs. However, the potentially staggering costs of such a treatment on top of the expense...limited their whole genome sequencing to a small percentage of edited embryos. Since the embryos produced...had few predicted off-target effects, but this advantage likely won’t transfer to all genes we’d like to...worthwhile for a given disease if it increased the percentage of disease allele-free embryos to only 60%? Unfortunately...
  15. Antibodies 101: Immunoprecipitation

    Type
    Blog Post
    ...appealing, but the disadvantages must be carefully considered before using. For example, the tag may affect the... epitope such as c-Myc, GFP or V5 can be used to tag the protein of interest on the C- or N-terminus. ...called a pull-down assay, an antibody against the tag is used to isolate the protein of interest. The wide...interfere with protein interactions of interest. Tagged proteins are typically expressed at much higher...proteins. Data obtained from experiments using a tagged protein may not be translatable to the endogenous...with downstream assays. This is particularly advantageous if the antibody used for IP is derived from ... difference. Magnetic beads are particularly advantageous because they do not require centrifugation between...
  16. Allen Institute for Cell Science Plasmid Collection

    Type
    Collection
    ...Endogenous Gene Tagging in Human Cells on the Addgene Blog. Plasmids for Endogenous Gene Tagging in Human Cells...with endogenously-tagged cellular structures. Addgene ID Plasmid Allen Institute ID Tag Protein Structure...has deposited plasmids to generate fluorescently tagged proteins of key cellular structures in human cell...You May Also Like... CRISPR Guide CRISPR Protein Tagging Fluorescent Protein Guide Subcellular Localization...collection (Link opens in a new window) of fluorescently tagged, human, induced pluripotent stem cell (hiPSC) lines...researchers will be able to generate fluorescently tagged proteins of key cellular structures in human cell...TTN-mEGFP AICSDP-45 mEGFP Titin Sarcomeres (M-line tag) 114413 MYL7-mEGFP AICSDP-46 mEGFP MLC-2a Sarcomeric...
  17. Troubleshooting Your Plasmid Cloning Experiment

    Type
    Blog Post
    ...cloning of more than 10,000 DNA custom constructs. His work was acknowledged in hundreds of publications...many softwares out there than can help you at this stage and that can be used to simulate in silico cloning...
  18. 5 Steps to Writing Grant Proposals for Grad Students

    Type
    Blog Post
    ...this if he wants data by next week!”, and “This is his job!” filled my naive mind. Moving forward from that...of current methodologies. This section sets the stage for why your funded proposal will address these ...
Showing: 121 - 140 of 268 results