We narrowed to 920 results for: IRE

...instability at 37°C (Ouellet et al., 2016) and requires a tRNA scaffold to improve its stability in vivo...Ming Hammond’s group created Spinach2 using site-directed mutagenesis of Spinach. In doing so, they identified...green fluorescent aptamer, was identified through directed evolution. First, a pool of RNAs that activate...Fluorescence is observed when these RNAs complex and the entire aptamer can hybridize and fold. (Alam et al., 2017...fluorescent protein by fluorescence-based selection and directed evolution." Journal of the American Chemical Society...

...of sequence design tools that considered the requirements of both assays. The RPA primers and Cas12a sgRNA... protein biomarker. Sepsis is one of the main directions we've considered because it's a leading cause...SHIELD used CRISPR interference (a deactivated Cas9 paired with sgRNA) to silence genes in antibiotic-resistant...Diseases Research and Education Institute, which is directed by Dr. Nicole Baumgarth, who is the same Lyme ...'ve got our new team together and our project direction set. We're staying in the environmental space ...

...whether off-target effects exist, but what the required level of specificity is for a given application...in advance, so minimal experimental testing is required. So how can you do this? Testing all IFNs is completely...reduced off-target activity, and the whole screening required only minimal extra effort (Figure 3). This first-pass...variant. Screen and expand clones carrying the desired on-target modification. Using this approach, highly...promoter, remember that transcription typically requires a purine base (A or G) at the 5′ end. If your ...

...sample would directly correlate to protein abundance on your membrane, which would be directly reported by...housekeeping proteins.” Fully quantifying a western blot requires a standard curve with a pure sample of your protein...proteins may not transfer precisely evenly across the entire blot. So how can you accurately compare different...your approach) as your final blot. Quantifying the entire lane of protein provides a loading control that...

...Vitamin B7) is first an essential coenzyme that is required by all organisms for life. Biotin is only synthesized...Most organisms have less than five enzymes in the entire proteome that are biotinylated. In E.coli for example...responsible for biotinylating only one lysine in the entire organism on the biotin carboxyl carrier protein...recall, BirA biotinylates only one lysine in the entire E.coli proteome. Using this knowledge, scientists...scientists identified the 13 amino acid sequence required for BirA recognition and biotinylation. This 13 amino...

...system (OTS) for the incorporation of phosphoserine directly into recombinant proteins (5). Optimization of...of this system defined three components required for translation (Figure 1): A tRNA that recognizes a... The generation of pSer-incorporated proteins requires a molecular toolkit containing the OTS, an appropriate...phosphoserine OTS, Sep-OTS, contains the components required for the translation of pSer-incorporated proteins...phosphoserine must be recoded to ‘TGA’ using site-directed mutagenesis. In the C321.ΔA strain, this TGA will...

...depolarization of neurons upon exposure to light through direct stimulation of ion channels. Naturally occurring...Halorhodopsins Halorhodopsins are light-gated, inward-directed chloride pumps isolated from halobacteria. Wild-type...). Color of Illumination Light Different tools require different activation wavelengths, which may have...Principles for applying optogenetic tools derived from direct comparative analysis of microbial opsins. Nat Methods...

...studies, where it could potentially label cells not directly connected to the injection site, or when using...volume. You’ll often hear that “high titer” is required for efficient AAV transduction, usually without...the optimal number of viral particles per volume required to express the gene of interest, in the cells ...are a few factors to consider. First, the titer required is inversely related to transduction efficacy:... recommended to optimize to the “lowest number required” instead of using the first amount that looks ...

...transformants for single colonies (this usually requires 10-20 plates) (see box below). This initial transformation...growth, scrape up, pool and extract plasmid DNA directly from the colonies. Transform the resultant plasmid...a lysis buffer to release recombinant proteins directly onto the nitrocellulose for subsequent probing... can lead to high background that obscures the desired signal. We have successfully corrected this by ...organism, it can be helpful to spot this protein directly onto nitrocellulose and carry out the steps from...

...way to verify that the insert ended up in the direction you want - usually by Sanger sequencing or further...course there’s much more detail and verification required for the process to work well, so let’s go over... that the digest go until completion. The time required for complete digestion varies for different enzymes...associated manufacturers websites. These stains require you to either stain your gel after you run your...above, respectively). Some of the above stains require you to visualize your DNA using UV light – please...

... Material Transfer Agreement process that kits require; Nicole, the web master in charge of all our externally...You might find that your next paper is going to require help from a biochemist, a geneticist, a microscopist...world, so a process or project or mission that requires a broad knowledge base is going to necessarily...more things necessary to make a successful team. Entire books have been written about this! But this is...the type of team. Knowing what roles your team requires to function is certainly necessary, but equally...

... two very similar proteins. Additionally, they require variable expression of your target across samples...and it causes a large deletion that removes the entire exon that codes for the epitope recognized by your...expected target protein in a Western blot. You acquire a plasmid encoding your protein of interest, known...you very similar results, while the third looks entirely different (B), giving you confidence that your...amenable to high-throughput analyses, however, it requires access to a mass spec facility and the ability...

...Transposition protein: This is the protein that’s required for the transposon sequence to move from one DNA... transcriptase and integrase enzymes which are required for LTR retrotransposon transposition. Non-LTR...animals Transgenic animals are often generated by directly injecting DNA into the pronuclei of fertilized...dystrophin, the gene mutated in muscular dystrophy, require truncation to fit in viral vectors, but easily ... into eukaryotic and prokaryotic genomes. They require just two key components, the transposon’s DNA sequence...

...membrane, a threshold is reached and the neuron fires, sending the electrical signal down the axon (Lodish...subsequently photo-stimulated through fiberoptic cannulas directly implanted in the injection site and connected ... et al., 2008; Taylor et al., 2016; Hooper and Maguire, 2016). Recombinant adeno-associated viruses (rAAVs...Central PMCID: PMC4971574. Hooper, Andrew, and Jamie Maguire. "Characterization of a novel subtype of hippocampal...PubMed PMID: 4940442. Schnütgen, Frank, et al. "A directional strategy for monitoring Cre-mediated recombination...

...concentration of your reagent. Be aware that this approach requires excellent attention to detail, since you’ll end...Transfers are a little trickier than gels and may require multiple runs to optimize or troubleshoot.   Before...migrate…so don’t try eliminating one component entirely. If you are trying to transfer proteins of vastly...antibody.  Pro tip! If your antibodies are coming directly from tissue or supernatant, and you’re doing the... you don’t need to compare the protein amounts directly, stripping and reprobing. Just make sure to go...optimizing it. Blots for quantification generally require more optimization than blots used to confirm overexpression...

...in a hyper-competitive environment where getting hired hinges on performing near miracles. When evidence...defending the role of science in our democracies will require constant vigilance and actions beyond marches, ...idea, but they might feel disconnected from the entire scientific process.  I've spent a lot of time debating...debating how to fix this.  As scientists, we work tirelessly in the lab where the groundbreaking research ...training as an academic scientist. I’ve worked tirelessly to get the publications, grant funding, and teaching...

... a variety of Cas enzymes with different PAM requirements and editing abilities, such as base editing,...with multiplexed guides, mini screening libraries, direct edit optimization, and more. While there are many...modular nature of the Fragmid system allows for direct comparisons of CRISPR parts. The Fragmid system...fantastic way to save time and money on studies that require many assemblies or that compare the effects of ...construct. Once you’ve identified your experimental requirements, it’s a good idea to select an available kit...

... to optimize and troubleshoot the system. Site Directed Mutagenesis by PCR & Single Base Editing with ...Interestingly, this technology may make some uses of Site Directed Mutagenesis by PCR obsolete! Honorable mentions...give a great science talk from Addgene Executive Director Joanne Kamens. I highly recommend taking a look...August posts in chronological order here: Site Directed Mutagenesis by PCR Google Forums Round Up: First...

...the success of the company is attributed to the entire Addgene family; the depositors and requesting scientists..., Addgene supporters, and of course, Executive Director, Joanne Kamens, and founders, Melina Fan, Ken ...headed to the Museum of Science in Boston, where the entire Blue Wing was set aside for the event. As guests...family Perhaps the most heartfelt portion of the entire night was when Melina and Ken called their parents...

...community, Blugene will regularly be paired with a variety of science-inspired friends. As you can see on the... also made it hard for users to get where they desired. It became clear to us that we needed to improve... you can find what you need and feel happy and inspired to tackle your next science challenge. If you ...