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Showing: 361 - 380 of 812 results
  1. SpyLigase Irreversibly Locks Peptides Together for Efficient Cell Capture

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    Blog Post
    ...in a genetically encoded way. SpyTag is nice and small, just 13 amino acids, but SpyCatcher is a protein...Schwarz-Linek at St. Andrews discovered the domain. It is small, highly stable and has this amazing chemistry locking... types, like stem cells or cells infected with malaria or other parasites. Addgene: Do you have any particular...
  2. Sensing Neuronal Dopamine

    Type
    Blog Post
    ...method is that it can be performed in a live awake animal by surgical implantation of the probe into a specific...powerful and offers immediate measurements in a live animal that can be correlated to behavior, the technique... molecular tool to detect and image DA in live animals (Patriarchi et al., 2018). Similar to calcium and...
  3. History of CRISPR Cas - A tale of survival and evolution

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    Blog Post
    ...specialized Cas proteins snip the foreign DNA into small fragments approximately 30bp in length and paste...editing was initially described by Cong et al. and Mali et al. in January 2013 (7, 8). Nine months later...Zhang F. Science. 2013 Jan; 339 (6121): 819–23. Mali P, Yang L, Esvelt KM, Aach J, Guell M, DiCarlo JE...
  4. CRISPR Methods for Bacteria: Genome Engineering, CRISPRa, CRISPRi, Base Editing, and More

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    Blog Post
    ...efficiency for point mutations and 66% efficiency for small insertions. Multiplexing of two targets simultaneously.... coli; while the Marraffini lab used a native minimal CRISPR array (Bikard et al., 2013), the Qi lab ... plasmids Stanley Qi’s lab demonstrated that a minimal, regulatable CRISPR system effectively silenced...transcription of one or more genes in E. coli. and in a mammalian cell line (Qi et al., 2013). Two important features...
  5. CRISPR 101: Cytosine and Adenine Base Editors

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    Blog Post
    ...create SpCas9 base editors with editing windows as small as 1-2 nucleotides. To reduce off-target effects...Another way to improve base editing efficiency for mammalian edits is to ensure the editors make it into the... CBEs (called Td-CBEs, CBE-Ts, or TadCBEs) are smaller and less likely to cause off-target mutations than...2023). Evolution of an adenine base editor into a small, efficient cytosine base editor with low off-target...
  6. 10 Great Guest Posts We're Thankful For

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    Blog Post
    ... experiments. Better Dyeing Through Chemistry & Small Molecule Fluorophores In this post, Luke Lavis from... A Versatile Viral Tool for Gene Expression in Mammals Adeno-associated viruses (AAVs) are commonly used... MIT) shows how you can use CombiGEM to barcode small libraries of CRISPR gRNAs to use for screening experiments...
  7. Visualizing Genomic Loci with CRISPR-Sirius

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    Blog Post
    ...based multicolor labeling system to visualize chromosomal loci in human cells (Ma et al., 2015). To do ...aptamers are nucleic acid sequences that bind to the small molecule, DFHBI-1T to induce its fluorescence. They...Hanhui et al. “Multicolor CRISPR labeling of chromosomal loci in human cells.” Proceedings of the National...
  8. Learning Technical Skills at a Lab Central Workshop

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    Blog Post
    ...a DNA sample into many small components. Without proper processing, these small DNA strands can form concatemers... produced high yields of quality libraries from small amounts of DNA i.e 100 pg. At the start of the workshop...
  9. Science Career Options

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    Blog Post
    ... opportunity to advance, and how many jobs are normally available (as sectors such as forensics currently...the relevant skills and experience.You might not normally think about it, but hobbies and volunteer experiences...are willing to exercise these skills outside of a formal work environment also shows that you are passionate...
  10. DAP arrays for multiplex gene editing

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    Blog Post
    ...MBE) and multiplex prime editing (MPE) with only minimal payloads. DAP array  Although CRISPR-Cas12a, with...advantages in gene editing, while keeping the system to minimal size. To do so, they harnessed the tRNA processing...any cell type or organisms of interest with only minimal genetic payloads. Different from existing multiplex...
  11. Photosensitizer Induced Cell Ablation with FAP-TAP MG-2I-dL5**

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    Blog Post
    ...portion of the complex and is derived from the malachite green (MG) dye, but has been modified with the...et al also show that MG-2I-dL5** only generates small amounts of non-specific ROS when exposed to YFP ...Receive the Fluorescent Protein eBook Learn about Small Molecule Fluorophores Resources on Addgene.org ...
  12. Synthetic Photobiology: Optogenetics for E. coli

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    Blog Post
    ... biological processes. Chemical effectors are suboptimal for a number of reasons, including their potential...number of plasmids, with one RR (ompR) encoded chromosomally. Leakiness was also an issue; some promoter ...transcription factors, for which low expression levels are optimal. These tools are compatible with many strains of...
  13. Choosing Your Fluorescent Proteins for Multi-Color Imaging

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    Blog Post
    ...supplement your cells with biliverdin for maximal brightness. In mammalian cells, one of the improved folding...however, that there is no single fluorescent protein optimal for all organisms and that if you want the brightest...
  14. Fluorescent Proteins 101: Luciferase

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    Blog Post
    ...luciferase as a genetic reporter in plant and mammalian cells. Luciferase assays have since become a gold...plasmid, which is then introduced into the desired mammalian, plant or bacterial cells. Expression of luciferase...elements are cloned into a plasmid upstream of a minimal promoter linked to luciferase. Activation of the...
  15. Viral Vectors 101: Systemic Capsids

    Type
    Blog Post
    ...total dose between 1 x 1011 and 5 x 1011 vg per animal (i.e., 10 and 50 µL of vector at 1 x 1013 vg/mL... Hudry et al, 2023; Hinderer et al, 2018). The optimal dose for each particular experiment is determined...validate the capsid for your specific application and animal model.  Other model organisms Tropism and efficacy...transduces BALB/cJ, CBA/J, and FVB/NJ mice, with minimal liver transduction observed in both BALB/cJ and...and AAV-PHP.S, with a bias toward segments of the small intestine (Chen et al., 2022). Systemic capsid for...
  16. Plasmids 101: Transformation, Transduction, Bacterial Conjugation, and Transfection

    Type
    Blog Post
    ...infected bacterium can either exist as transient extrachromosomal DNA, like a plasmid, or it can integrate into...introduce foreign DNA into eukaryotic cells, like mammalian cell lines. This can be done with lentiviral and...chromosome and allows the donor bacterium to make a small “bridge” or sex pilus that attaches to the recipient...
  17. Screening for Successful Genome Editing with Digital PCR

    Type
    Blog Post
    ...cost-prohibitive for many labs, and are often impractical for small projects. Most researchers instead turn to so-called...frustrating to work with, time consuming, and minimally informative. In this blog post, we’ll introduce...one or no copies of the target DNA. Conventional thermal cycling is then performed to amplify the target...
Showing: 361 - 380 of 812 results