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We narrowed to 905 results for: NSI

Showing: 661 - 680 of 905 results
  1. Colony Formation Titering Assay

    Type
    Protocol
    ... in the lab by heating to 56 °C for 30 min. Considerations Before You Start The health of the target cell...pipetting or inverting. Aliquot 1.35 mL of the cell suspension into each well of the 6-well dish directly on... 48–72 h. Pro-Tip Different cells may be more sensitive to lentivirus or to polybrene, in which case this...
  2. Antibodies 101: Antibody Engineering and Directed Evolution

    Type
    Blog Post
    ...regions you want to evolve. With this added layer of insight, you can shrink your mutant library and increase... Biotin. The antibodies developed by IPI are extensively characterized and validated, with the application...
  3. 9 tips for a successful postdoctoral experience

    Type
    Blog Post
    ...training. Similarly, there are several factors to consider when selecting a postdoc mentor and lab. These... having sufficient data to write a manuscript. Consider questions like: What figures are missing? For ...
  4. AAV Purification by Iodixanol Gradient Ultracentrifugation

    Type
    Protocol
    ... In research, iodixanol is used as an isomolar density gradient medium suitable for virus purification...to mammalian cells. Therefore, and unlike other density gradient media, it is reportedly not necessary ...steps are used to remove contaminants with lower densities, including empty capsids. The 60% step serves ...
  5. Antibody Guide

    Type
    Guide
    ...Figure 1. The two arms of the Y structure are responsible for binding the antigen, and are called the antigen...isotype of the antibody. B cells, the immune cell responsible for producing antibodies, can change the constant...binding site. In B cells, the genetic region responsible for the variable region goes through a randomized...valency of 2 IgE Protects against parasites and is responsible for driving allergic reactions such as anaphylactic...requirements, monoclonal antibodies are typically more expensive than polyclonal antibodies. Environmental factors... Minibodies are engineered antibody fragments consisting of two scFvs bound to a CH3 domain. Fab fragments... protein. Fluorophores Fluorophores are light-sensitive molecules which emit a specific wavelength of ...
  6. Plan Your Experiment

    Type
    Guide
    ...Manipulation Application Cas Enzyme Additional Considerations Browse Plasmids Knockout Permanently disrupt...essentially function as a “knockout,” but be sure to consider potential consequences of having a non-functional...be no PAM site close to your desired edit site. Consider alternative Cas9 enzymes with different PAM sequences...completely avoid them. To increase specificity, consider using an engineered Cas enzyme with higher fidelity...to off-target activity, it is also important to consider factors that maximize cleavage of the desired ...with BioRender.com. When choosing your system, consider which Cas enzyme you are using (as species and...for your experiment) and the expression time (transient or stable). For plasmid and viral-based approaches...
  7. Personal Protective Equipment (PPE) for BSL-1 and BSL-2 Labs

    Type
    Protocol
    ..., be aware that some gloves may contain latex. Consider nitrile gloves as an alternative. For extra precautions...anyone else associated with Addgene, can be held responsible for your use of the information contained in ...
  8. Optogenetics Guide

    Type
    Guide
    ...switches harness light-responsive conformational changes in natural light-sensing domains to modulate a...animal GPCRs responsible for vision found in rod and cone photoreceptor cells are light-sensitive rhodopsins...opto-chemogenetic tools consisting of a light-emitting luciferase fused to a light-sensing element such as an...particular GPCR is to engineer a chimeric protein consisting of an opsin and the GPCR of interest (referred...the extracellular domain of an endogenous light-sensitive receptor, like mammalian rhodopsin, with the intracellular...from Halorubrum strain TP009; improved light sensitivity over Arch 566 eArchT 3.0 ArchT with addition ...cryptochromes, light oxygen voltage (LOV), and other photosensitive domains have been adapted to control many protein...
  9. Protocol - Over-Agar Antibiotic Plating

    Type
    Protocol
    ...satellite colonies will grow). It is, however, more expensive. With a 6 cm diameter petri plate containing solidified...Plate 50 µL of transformed E. coli /rescue media suspension onto the agar and gently spread over the surface...
  10. Centrifugation

    Type
    Protocol
    ...from a liquid or separate liquids of different densities is essential to many different experimental procedures...samples. If your samples are significantly higher density than water, then you may need to fill the blank...
  11. Gibson Assembly Protocol

    Type
    Protocol
    ...and molecular biologists now use this method extensively. Why Gibson Cloning? No need for specific restriction... Assembly master mix (isothermal reaction mix) consists of three different enzymes within a single buffer...
  12. General Transfection

    Type
    Protocol
    ...linear polyethylenimine. Transfections allow for transient expression of a gene of interest in a target cell...discard the tube and thaw a new working stock. Considerations Before You Start The health of the cell line...
  13. Immunocytochemistry

    Type
    Protocol
    ...well. Allow the HeLa cells to grow to the desired density before labeling. Section 2: Fixing and permeabilizing...instructions before starting your experiment and consider titrating your antibody to determine the optimal...
  14. Adeno-associated virus (AAV) Guide

    Type
    Guide
    ...the viral genetic material inside. The AAV genome is ~4.7 kb long and consists of two open reading frames...ITRs is limited by the physical space available inside of the small AAV capsid and directly correlates...Genome Integration Recombinant AAVs are generally considered to not integrate into the host genome. When wild-type...during production, as it carries the Cap region responsible for the production of capsid proteins. AAV2 is...it was the first to be well-characterized and extensively studied, and has a broad tissue tropism. Table...information. Self-complementary AAV (scAAV) One downside of the use of AAVs as viral vectors is their single-stranded...common points of entry. Biosafety should always be considered with respect to the precise nature of experiments...
  15. Chemogenetics Guide

    Type
    Guide
    ...molecule ligand. The ideal chemogenetic tools are unresponsive to native ligands and are engineered to respond... development of mutated receptors that while unresponsive to endogenous ligands, could be activated by... coupled receptors, but unlike RASSLs, show insensitivity to endogenous ligands, have low constitutive...proteins of a light-emitting luciferase and a light-sensing optogenetic element. When the luciferase substrate...luciferase-fluorescent protein fusions, to more-sensitive opsins has led to improved LMOs with increased...chemogenetics experiment, here are some things to consider: Activation or Inhibition? Do you want to turn... a study in rats using an hM4Di receptor might consider an alternative DREADD ligand such as DCZ versus...
  16. CRISPR Guide

    Type
    Guide
    ...fusing the anti-CRISPR protein AcrIIA4 with the photosensitive LOV2 domain . Several labs have also controlled...There are two main types of base edits: Base transitions — edit to same classification of nucleotide base...pyrimidine-to-pyrimidine), which catalyze base transitions. Cytosine base editors are created by fusing ...integrated along with the sequence, so the edit is not considered “scarless”. Figure 7: Overview of CRISPR transposases... target gene function. It has also been used extensively to screen for novel genes that regulate known...simplest dCas9-based activators and repressors consist of dCas9 fused directly to a single transcriptional...silencing across much of the human genome following transient expression of the dCas9 fusion, with the epigenetic...
Showing: 661 - 680 of 905 results