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We narrowed to 991 results for: igh

Showing: 281 - 300 of 991 results

  1. New and Upcoming Viral Vectors - Spring 2019

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    Blog Post
    ...with different properties (for example, overall brightness or on/off kinetics) that makes them suitable ...(pGP-AAV-syn-FLEX-jGCaMP7b-WPRE) exhibits the brightest resting fluorescence of the GCaMP7 family of calcium...pAAV.hSyn-FLEX.iGABASnFR) has good membrane localization and brightness. The F102G variant (pAAV.hSyn-FLEX.iGABASnFR....through imaging. Since it’s illuminated by red/orange light, Archon1 can also be used in conjunction with optogenetic... activators and inhibitors that respond to blue light. We recently released a constitutive (pAAV-Syn-Archon1...-jGCaMP7f-WPRE AAV1 with a CAG promoter exhibits high specificity for Purkinje neurons. 105321  AAV1...pGP-AAV-syn-jGCaMP7c variant 1513-WPRE 7c exhibits high contrast between peak fluorescence and resting fluorescence...

  2. Plasmids 101: Origin of Replication

    Type
    Blog Post
    ...Some common ones you might see include ColE1, pMB1 (which comes in a few slightly different but well known...make additional copies. ori sequences are generally high in As and Ts. Why, you ask? Well, A-T base pairs...make a lot of your plasmid? Is the gene toxic in high amounts? It is always good to keep in mind that ...propagate plasmids, but endA- E. coli are best for high yields of plasmids. Growth conditions The amount...culture inoculum Freshly streaked bacteria have higher copy numbers – for optimal results always pick ...cultures. Freshly transformed cells also give a higher plasmid yield that colonies streaked from a glycerol...stock. Incubation for 12-16 hours tends to give higher copy numbers since the bacteria have just reached...

  3. Hot Plasmids - December 2019 - CRISPR pooled library, LipoGlo, CRISPRa, and Voltage Imaging Tools

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    Blog Post
    ...fluorescence changes or a requirement for very high excitation light intensities have made these indicators difficult...Every few months we highlight a subset of the new plasmids in the repository through our hot plasmids...measure ApoB-LPs directly and develop a potentially high throughput in vivo model to identify drug candidates...Thierer et al, 2019). Zebrafish are a great model for high throughput study of ApoB-LPs because their ApoB ...amenable to use with other bEBP/UAS pairs, and displays high dynamic range. However, the promoter in question...lipid compositions of C. elegans membranes, which might beneficially influence the rhodopsin properties....

  4. The Power Behind NGS Plasmid Validation: seqWell

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    Blog Post
    ...projects in many labs. However, the high costs of sample preparation for high-throughput next generation (NGS...Addgene to develop a highly optimized bioinformatics pipeline that will return high-quality assembled and...quantities of library molecules for each sample remain highly normalized across a wide range of input DNA concentrations... vary by DNA input amount. plexWell™ + Addgene = high quality NGS-assembled plasmids Because of the enhanced... plasmids. The plexWell™ workflow also offers a highly efficient NGS-based alternative to Sanger sequencing...assembly pipeline. To date, this has resulted in high quality NGS-based assemblies for over 3000 plasmids...

  5. Creating accessible biology activities in schools with BioBits

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    Blog Post
    ...While I had always enjoyed learning about biology in high school, it wasn’t until I started working in my ...molecular biology-based activities making their way into high school classrooms, like gel electrophoresis to separate...led me to develop BioBits ExplorerTM and BioBits BrightTM, biology kits based on freeze-dried, cell-free... that students can easily sense, whether that’s bright fluorescent proteins that they can see, enzymes...initially developed the BioBits kit to be used in high school classrooms, but it could be widely adapted... a biology teacher at the elementary, middle, or high school level, feel free to check out one of our ...PMC6070312. 2. Stark, Jessica C., et al. "BioBits™ Bright: A fluorescent synthetic biology education kit....

  6. A Control for All Seasons

    Type
    Blog Post
    ...Antibodies 101: Choosing the Right Isotype Antibodies 101: Selecting the Right Antibody Resources on Addgene.org...groups on a western blot and look for the molecular weight shifts indicative of tau phosphorylation. By including...protein standard (P) to check for tau molecular weight shifts. A negative control is a sample or ...runs. If the results vary considerably, then the high degree of variability in the process could make ...signal from your target needs to be significantly higher than the background noise (Waters 2009). If the...the fluorescence from your target is extremely bright, then the noise likely will not interfere. If the...control for all new samples, protocol changes, or when high background labeling occurs (Burry 2011). Complex...

  7. Antibodies 101: The Basics of Western Blotting

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    Blog Post
    ...commonly used, PVDF tends to be slightly more popular due to its durability and high binding capacity. In addition... (HRP), that emits light upon reacting with a specific substrate. The emitted light, or chemiluminescence... samples, a protein standard of known molecular weight in a separate lane can help confirm the size of...acrylamide content of the gel. For small proteins, use a higher percentage of acrylamide to increase migration ...broad range of protein sizes but takes hours to overnight.  In contrast, a semi-dry transfer only requires...chain. Consequently, antibodies validated for IP might not work for a western and vice versa.  In addition...specific experimental condition you could look for a slight size shift in the protein band before and after...

  8. Building Global Connections with the International Mentorship Program USA-EUROPE

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    Blog Post
    ...junior faculty member at Harvard Medical School/Brigham and Women’s Hospital (BWH). Based on her experience...years ago looking for their career improvement) and bright students that will be the future of the country...to help build, together with the universities, a bright future. IMP provides matched one-on-one international...Although all mentorship relationships are valuable and highly recommended, a mentor with international experience...impressions of the IMP experience. Conference highlights included remarks by the Spanish Secretary of ...representatives from different Spanish universities and high level public and private institutions also showed...website Learn about the Mentor Circle Program at Brigham and Women's Hospital Visit the International Mentoring...

  9. Seven Tips for Using LinkedIn as a Scientist

    Type
    Blog Post
    ... be on LinkedIn?” For anyone who is planning or might need to plan for a career outside academia (that...business or follow up. Use the "Contact info" link right below their photo. 2) Personalize all connection...note, you waste an opportunity to start things out right. Also, many people on LinkedIn don’t appreciate ...connect button unless you’re on a profile page. You might be looking at a list of suggested connections and...connect people that want to meet or that you think might be helpful to each other. This is a quick way to... before you’ve had a chance to proof read. This might not be important for a good friend, but if you are...and it’s still connecting with a stranger so is highly discouraged. You should be using your network to...

  10. Corralling and Cornering the Goldilocks Antibody

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    Blog Post
    ...midst of a crisis. The “antibody crisis” came to light as antibodies became commercialized, revealing the...goldilocks antibodies. A goldilocks antibody is highly specific (minimal binding to off-target molecules...creating a public and accessible database for low-cost, high-quality antibodies for IHC. Working with collaborators...their recombinant forms (rAbs). mAbs and rAbs have higher homogeneity than polyclonal antibodies because ...from the negative control, such as showing a very bright signal only in the hippocampus compared to other...the amount of time the sample needs to be under light to discern the signal. If the exposure time is long...allowing scientists to find and utilize reliable, high-quality antibodies. We are creating a database for...

  11. Split Fluorescent Proteins for Studying Protein-Protein Interactions

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    Blog Post
    ...catalog to help you find the right split-FP plasmid for your experiment.  Highlighted Split-Fluorescent Protein...bimolecular fluorescence complementation assay with a high signal-to-noise ratio. Kodama Y, Hu CD. Biotechniques...amino-terminal acetylation system and novel in vivo high-throughput screen for molecules affecting alpha-...Improved sfCherry3C(1-10) for use with sfCherry2(11) Bright split red fluorescent proteins for the visualization... chromophore formation (abundant in eukaryotes) Bright monomeric near-infrared fluorescent proteins as... with exogenous fluorophores, which can even be bright enough for single-molecule tracking in live cells...

  12. Simple CRISPR-based Epigenetic Editing: dCas9-directed DNA Demethylation

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    Blog Post
    ...PAM) might work too.  High dCas9 and gRNA expression are key for complete DNA demethylation – tight binding...the Future, and big hair. To what was perhaps a slightly smaller population, something else was also suddenly...conference or a karaoke bar), you probably want to sigh. The problem is that many of these studies report... 2018). This means that off-target loci – in neighboring chromatin or throughout the genome – could be...reality, editing your target site is not as straightforward as expected. TET1 can have many effects independent...and pLM-CMV-R-Cre. Selection for cells stably and highly expressing these constructs can be achieved by ...

  13. Adenoviral Vector Production and Troubleshooting

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    Blog Post
    ...applications and gene therapy: they can be produced at high titers, can accommodate large transgenes, transduce...Gutless Ad vectors (helper-dependent (HD-Ad), or high-capacity (HC-Ad__ are devoid of viral genes and ...belongs to this category. 3rd Gen AdV (Gutless or high capacity AdV) are devoid of all viral coding sequences...proteins in trans. The Gutless AdV have generated high interest for gene therapy due their increased cloning...more HEK293 cells and produce more rAdV to reach higher titers. Successfully infected cells will become...separate rAdV from other cellular debris. Purified high-titer rAdV is then dialyzed and stored at -80C. ...account. You're now ready to use your purified, high-titer rAdV in your experiment. Enjoy! References...

  14. Common Injection Routes in Mice

    Type
    Blog Post
    ...injection site is straightforward, as it targets large muscle groups (usually the thigh), though it is important...injection, like you might after getting a vaccine. Restraint: mechanical restraint Location: thigh Gauge: 25–27...use depends on a number of factors. You have to weigh the pros and cons of various methods and choose ...circulation is slower, and more institutional oversight is required. Restraint: mechanical restraint or...such as experimental therapies or pain relief, straight to the stomach. This technique involves administering...Intermediate Intramuscular Mechanical restrainer Thigh 25–27 < 0.02–0.05 mL Beginner Subcutaneous Back...

  15. Antibodies 101: Flow Compensation

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    Blog Post
    ...emission spectra, meaning they will emit fluorescent light at similar wavelengths (See this handy emission ...against APC-Cy7, the populations are in more of a straight line and are only positive for APC (Figure 1B)...horizontal line, so our circled population on the right needs to shift towards the X axis to become a perpendicular... plot in 2A, the populations are not perfectly straight, but the center of each population is in a line... sample you are trying to compensate in the top right corner of a flow plot, meaning that it should be..., it will show up as a diagonal line in the top right corner of the plot and large compensation values...positive sample. The cell population in the top right corner of the plot is positive for both markers,...

  16. When is a Monomer not a Monomer? The Top Three Ways Your Favorite Fluorescent Protein Oligomerizes in Cells

    Type
    Blog Post
    ...for fusion proteins! Despite multiple studies in high profile journal articles, many researchers remain...primarily as a dimer in cells while a protein with a high micromolar or low millimolar Kd is unlikely to form... Following the simple logic outlined above, you might think EGFP is unlikely to form dimers in a cell....then their effective concentration will be much higher than if they are homogenously distributed and mobile...concentration of FPs around that fusion protein is very high. Real world examples of these situations in cells... the POI. These structures are large (microns), bright, non-physiological, and difficult to ignore [1,...normally self-associate into homodimers or even higher order oligomers. Unfortunately, FP dimerization...

  17. Typing CRISPR Systems

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    Blog Post
    ...and understanding of CRISPR, and perhaps provide insights and ideas for your own research! Classification...categories, arriving at a consensus was not as straightforward as it seems. There is not a single gene that... sequence similarity, phylogenetic analysis, neighborhood analysis of surrounding genes, and experimental...cutting up DNA after recruitment by Cascade. As you might imagine, this is handy for creating large genomic...adaptations for increased fidelity, activation/repression, high precision edits, and more. Figure 3: Schematic...Cas12 create short 3’ overhangs, which leads to slightly increased efficiency when conducting edits using...with BioRender.com.   What’s your type? It is highly unlikely that you will have to know and understand...

  18. Antibodies 101: Introduction to Antibodies

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    Blog Post
    ... completed with the Ig light chains. The variable region of the heavy and light chain determine what antigen...going to spot the whole, long word right off the bat, but you might see a few letters and be able to guess...Two immunoglobulin (Ig) heavy chains and two Ig light chains make up each antibody molecule. The Fc region... of an antibody including Fc, Fab, heavy chain, light chain, constant region, variable region   The...made up of the variable regions of the heavy and light chains fused together to form a single protein that.... The proteins are separated based on molecular weight by SDS-PAGE, and are subsequently transferred to...interest and detect its presence. Then, the amount of light that can pass through each well - the optical density...

  19. A Primer on Optogenetics: Introduction and Opsin Delivery

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    Blog Post
    ...accurate and reproducible. I also highly recommend spending the money on a high quality stereotaxic frame with...and versatility, the technique is remarkably straightforward to learn and relatively cheap (compared to ...manipulated a number of the opsin genes to alter the light spectrum for activation and the kinetics of opsin...above) include Channelrhodopsin2 (Chr2), a blue-light sensitive non-specific cation channel, activation...potential. Halorhodopsins (HR) are green/yellow-light sensitive chloride ion pumps, activation of which...expression alone is extremely limited. Therefore, highly expressing, generic neuronal promoters such as ...privately communicated to me as one of these extremely high expressing promoters). Conduct a time course experiment...

  20. Tips for Writing a Good Cover Letter

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    Blog Post
    ...and writing are key skills. Other fields, often highly technical or skills-based ones, may not use them...are less likely to require cover letters, while higher-level jobs are more likely to consider cover letters...that asks for strong organizational skills. You might think, “I’d be good at that! I organized my lab ...]. Notice that the intros above allow you to highlight what specific skills, qualities, or interests ...considered cover letters to be more important for higher-level positions. Many did not require cover letters...-neutral greeting like “Dear Hiring Manager.” Highlight your achievements with specific examples. Instead...
Showing: 281 - 300 of 991 results