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Showing: 161 - 180 of 438 results
  1. GCE4All: Making Genetic Code Expansion Accessible

    Type
    Blog Post
    Published
    June 15, 2023, 1:15 p.m.
    ...proteins in E. coli (Zhu et al., 2022). It uses the TAG codon for the phosphoserine and, because it uses ...protocol to work. Or, to quote Ryan Mehl, PhD, GCE has “10x the impact of PCR. But it’s 100x more complicated...essentially those needed to make site-directed mutagenesis, many researchers new to GCE aren’t able to successfully...
  2. Optogenetics + CRISPR, Using Light to Control Genome Editing

    Type
    Blog Post
    Published
    Sept. 3, 2020, 12:15 p.m.
    ... dCas9 fusion protein with three red fluorescent tags in U2OS cells. Upon light activation, dCas9 is released... add the PCK upon reaching the amber stop codon, TAG. (To learn more about site-specific incorporation...light is of particular interest since blue light has limited applications in vivo. UV and blue light is...domain from A. sativa (Bubeck et al., 2018). LOV2 has a C-terminal helix that unfolds when stimulated by...gene expression. Both of these techniques take advantage of light-induced dimerization to activate their...
  3. CRISPR 101: Engineering the Plant Genome Using CRISPR/Cas9

    Type
    Blog Post
    Published
    Oct. 11, 2016, 2:30 p.m.
    ...information on multiplexing gRNAs here). Cas9 is commonly tagged with a nuclear localization sequence to enhance...last updated Dec 22, 2020 by Benoit Giquel. CRISPR has taken the genome engineering world by storm owing...that regulate a desired phenotype. In fact, CRISPR has already been used to engineer the genome of many ...to protoplast cells (plant cells whose cell wall has been removed). Another common delivery method is ...developed for plants and prime editing for plants has been developed for rice by Yiping Qi’s lab and for...2013) Plant genome editing made easy: targeted mutagenesis in model and crop plants using the CRISPR/Cas...Rice Blast Resistance by CRISPR/Cas9-Targeted Mutagenesis of the ERF Transcription Factor Gene OsERF922...
  4. Mycoplasma Contamination: Where Does It Come From and How to Prevent It

    Type
    Blog Post
    Published
    Oct. 8, 2020, 1:15 p.m.
    ...PCR based detection, DNA staining, fluorescent tagging, agar plating, etc. Be wise to choose any of the...facilities, tissue culture labs and every cell culturist has to deal with this problem. It is estimated that mycoplasma...this induces a noticeable color change. This method has high sensitivity but low specificity (Degeling, 2012...affect the cell growth and viability. If mycoplasma has made permanent damage to the cell culture it is irreparable...Institute of Biosciences and Technology in India. Jadhav has a Master's degree in Molecular Biology (University...
  5. Plasmids 101: Biotinylation

    Type
    Blog Post
    Published
    Nov. 15, 2018, 1:50 p.m.
    ...fusion in which AviTag is added to either the N or C terminus of the protein. BirA has been shown to effectively...Efficient biotinylation and single-step purification of tagged transcription factors in mammalian cells and transgenic...with the macromolecules it is added to. Biotin also has an exposed side chain that can be easily manipulated...coated with avidin. The biotin-avidin interaction has also been adapted for use in immunohistochemistry...biotinylation. This 13 amino acid sequence is termed AviTag. Using AviTag, one can label a protein of interest with...Scientific's Biotinylation Reagent Selection Tool. AviTag and BirA Proteins can also be biotinylated by exploiting... effectively biotinylate AviTag expressing proteins in bacteria, yeast, insect and mammalian cells. Check...
  6. New Optogenetic Tools for Cytoskeleton and Membrane Control

    Type
    Blog Post
    Published
    Sept. 28, 2023, 1:15 p.m.
    ...membrane-localized iLID along with your chosen SspB-tag-GEF and your cells will be ready for the spotlight...localized, rapid and reversible microtubule severing and has very low dark-state activity and toxicity. All of...could be extended to other GTPases. The Chow Lab has also generated a variety of membrane-recruitment ...engineering other enzymes. Conclusion We hope this post has illuminated some of the many tools available for ...disrupt microtubules in cells, they have various disadvantages and limitations – for example, microtubule-destabilizing...on BcLOV4. These single-component systems take advantage of BcLOV4’s light-induced binding of the plasma...dissect the roles of three Rab proteins during a key stage of zebrafish development (Aljiboury et al., 2023...
  7. Choosing the B(right)est Fluorescent Protein: Photostability

    Type
    Blog Post
    Published
    June 8, 2017, 2:30 p.m.
    ...Addgene.org Find Empty Backbones with Fluorescent Tags Find Plasmids for Subcellular Localization Browse... 2008) occasionally and certainly after a set-up has been changed (for instance after replacing a broken...
  8. Antibodies 101: Conjugation

    Type
    Blog Post
    Published
    March 26, 2024, 1:15 p.m.
    ...inclusion of non-canonical amino acids or peptide tags. 5) Strong protein-protein interactions with other...or capable of producing a visible signal, but it has a strong affinity for avidin and streptavidin, both...through several different mechanisms. Most take advantage of chemical groups intrinsically present on antibodies...
  9. Plasmids 101: Modular Cloning

    Type
    Blog Post
    Published
    March 12, 2024, 1:15 p.m.
    ... Cloning of basic parts (promoters, UTRs, genes, tags, etc.) into MoClo-compatible vectors. Level 1: Assembly...afterwards. To engineer these production pathways, MoClo has been used to assemble multigene constructs capable...
  10. CRISPR 101: Multiplex Expression of gRNAs

    Type
    Blog Post
    Published
    Sept. 10, 2020, 11:45 a.m.
    ...DNA glycosylase inhibitor with a degradation tag (LVA tag) to achieve specific point mutations in E. coli...multiple gRNAs on one plasmid. Sound good? Addgene has many tools to help you multiplex - we’ll use mammalian...multiple promoter-gRNA cassettes, making them advantageous for small capacity vectors like AAV. In addition.... Yin, Linlin, et al. “Multiplex Conditional Mutagenesis Using Transgenic Expression of Cas9 and sgRNAs...
  11. CRISPR Methods for Bacteria: Genome Engineering, CRISPRa, CRISPRi, Base Editing, and More

    Type
    Blog Post
    Published
    Sept. 28, 2020, noon
    ...similar to the original pCas/pTargetF but has many other advantages including shorter plasmid curing time....uracil DNA glycosylase inhibitor and degradation tag on the fusion protein to limit the activity of the...in bacteria, most CRISPR-based genome engineering has taken place in other organisms. In many bacteria,... targets cells in which homologous recombination has not occurred. This powerful negative selection system...plasmids Noting that the more common spCas9 system has generally low efficiencies or can be proteotoxic ...system can be delivered a number of ways but success has been observed with Phagemids (Selle et al., 2020,...microbiome Beyond the human gut, the Barrick lab has deposited plasmids that can be used to engineer the...
  12. Antibodies 101: Multiplex Immunofluorescence

    Type
    Blog Post
    Published
    May 23, 2023, 1:15 p.m.
    ...against your target protein, consider fusing a protein tag to the target and using an epitope-based strategy...different species/isotypes and that each secondary has a different color fluorophore that you can image ...abundant in your samples (with a primary antibody that has the same species and isotype as the primary antibody...
  13. Technique: Probe Phage Genomes for Host Binding Proteins

    Type
    Blog Post
    Published
    Sept. 29, 2016, 2:30 p.m.
    ...Alberta studying with the Szymanski lab (though she’s tagged along with the lab during its recent move to the...cost-effective method that our lab (the Szymanski lab, which has recently moved from the University of Alberta in ...Edmonton, Canada, to the University of Georgia, USA) has developed that allows for a phage genome to be probed...library construction for functional genomic and metagenomic screening." Applied and environmental microbiology...
  14. Plasmids 101: E. coli Strains for Protein Expression

    Type
    Blog Post
    Published
    Feb. 10, 2015, 3:06 p.m.
    ...the concentration of inducer or adding an affinity tag such as GST may help with solubility issues. We ... BL21 (DE3) pLysE* Chloramphenicol (pLysE) pLysE has higher T7 lysozyme expression than pLysS; expression...
  15. Using AAV for Neuronal Tracing

    Type
    Blog Post
    Published
    Aug. 9, 2018, 1:04 p.m.
    ...(2017). AAV-mediated Anterograde Transsynaptic Tagging: Mapping Input-Defined Functional Neural Pathways...auditory neuronal circuitry in vivo. A variant of RABV has been developed to only label a neuronal connection...example only dopaminergic neurons, neuronal tracing has the added benefit of only labelling the subset of... regions used. Evidence for retrograde transport has been found for AAV1, -2, -5, -7, -8 (Taymans et al...AAV5 (Aschauer et al., 2013). Anterograde transport has been observed for AAV1, -5, -8 (McFarland et al.,...variability compared to chemical tracers. rAAV2-retro also has lower affinity for heparin, which possibly explains...vectors cover some of these attributes and their use has allowed for the visualization of single connection...
  16. Plasmids 101: Common Lab E. coli Strains

    Type
    Blog Post
    Published
    Nov. 7, 2014, 2:56 p.m.
    ...perfect empty backbone, made sure to add the right tags to your gene, and may have even put a fluorescent...OpenWetWare's E.coli genotype resource. Additionally, NEB has a great list of genetic markers for your reference...
  17. Antibodies 101: Introduction to Antibodies

    Type
    Blog Post
    Published
    Jan. 19, 2021, 2:15 p.m.
    ...of antibody and production strategy has advantages and disadvantages compared to each other. Polyclonal...Experimentally, antibodies conjugated to fluorescent tags or other markers can be injected into an animal,...produced for research purposes, some of which take advantage of natural immune system production and many more...as polyclonal. Polyclonal antibodies have the advantage of more robustly recognizing the target protein...proteins are also plasmid-derived. However, a disadvantage to ScFv is their lower affinity for their target...antigen as canonical antibodies. They also have the advantage of being significantly smaller, meaning they can...proteins you can investigate in each panel. An advantage of flow cytometry is the ability to use multiple...
  18. Mesothelioma - Causes, Symptoms, and Treatment

    Type
    Blog Post
    Published
    Dec. 13, 2016, 3:30 p.m.
    ...time it has caught it has usually started to spread (metastasize) and turned into Stage 3 or Stage 4 cancer...and treatments such as these has brought a lot of promise to a field that has historically been full of ...size and may have spread while Stage 4 indicates that the cancer has spread from where it originated to...However, as the U.S. Environmental Protection Agency has noted, there is no safe level of asbestos exposure...abdominal cavity. This targeted chemotherapy approach has been shown to be successful in killing many (if not...patients: early detection and immunotherapy.  It has long been known that one of the best ways to improve...standard treatments and early detection, mesothelioma has proven itself to be susceptible to up and coming ...
  19. CRISPR 101: Drug discovery and CRISPR

    Type
    Blog Post
    Published
    May 4, 2023, 1 p.m.
    ...the target. CRISPR has revolutionized the generation of knockout cell lines which has made this control...multiple stages of the drug discovery pipeline.   CRISPR and drugs in the future While CRISPR has already...In this blog we will review how CRISPR technology has brought drug and genetic screens together and expedited...candidate genes! Disease model generation CRISPR has made the generation of genome edits accessible, fast... have the precise disease genetics. Since CRISPR has been adapted for use in primary cells, many tissue...drug is equally toxic to both lines, it probably has either high toxicity or high off target effects, ...engineered to have many unique capabilities which has advanced what type of edits can be made in the contexts...
  20. CRISPR 101: Epigenetics and Editing the Epigenome

    Type
    Blog Post
    Published
    June 24, 2020, 5:45 p.m.
    ...sum of epigenetic modifications across the genome) has been implicated in disease states, and targeting ...genomic loci is possible using CRISPR, and Addgene has a number of tools for this purpose. Epigenetics began...many TALEN-based technologies, the advent of CRISPR has made targeting much easier! With the help of guide...modification at specified loci. Charles Gersbach’s lab has deposited mammalian expression constructs including...BioRender.com. Tet1 demethylase Ronggui Hu’s lab has created pdCas9-Tet1-CD for targeted cytosine demethylation...Methyltransferase 3 Alpha (DNMT3A) Vlatka Zoldoš’ lab has deposited pdCas9-DNMT3A-EGFP and pdCas9-DNMT3A-PuroR...DNA Methyltransferase MQ1 Margaret Goodell's lab has deposited pcDNA3.1-dCas9-MQ1(Q147L)-EGFP, a fusion...
Showing: 161 - 180 of 438 results