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Showing: 441 - 460 of 929 results
  1. Mobile-CRISPRi: Bringing CRISPRi to Diverse Bacteria

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    Blog Post
    ...when studying them since their complete knockdown is lethal. Incomplete or titratable knockdown, however...the tools scientists can use to study them. For example, gene knockdown with CRISPR interference (CRISPRi...pathogenic strains and environmental isolates. For example, Peters and colleagues used Mobile-CRISPRi to knockdown...if that gene is a target of an antibiotic. For example, let’s take a look at the essential gene folA which...
  2. Fluorescent Proteins 101: Fluorescent Protein Timers

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    Blog Post
    ...and look at them under a microscope, fractionate samples to isolate particular organelles and their contents...fluorescent proteins have usurped old methods or complemented them in ways that make them much easier. A special...localized to a specific region of the cell. For example, if the ratio of red/green fluorescence falls within...protein or protein fusion. This one protein method simplifies cloning and makes your experimental setup less...in gene expression. In a developing embryo, for example, a researcher could determine whether or not newly...
  3. Hot Plasmids and Viral Preps - May 2021

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    Blog Post
    ...many aaRSs exist within a multi-tRNA synthetase complex, the team investigated whether the generated antibodies...antibodies were able to immunoprecipitate the entire complex in three different cell lines. The Gräslund lab...jbc.RA120.01289     Novel protein cage provides simple enzyme protection in yeast bioproduction pathways... a reaction pathway, the MPyV system provides a simple, efficient method for protecting a single enzyme...SaCas9. A new yeast inducible CRISPRi library - Ampl133 targets S. cerevisiae genes with 6-12 guides per...
  4. PhD Applications After COVID

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    Blog Post
    ...know that this process only became even more complicated with COVID-19 and standards for hybrid, virtual... tends to go something like this:   However, as simply as it seems laid out above, there are many places...where the PhD application cycle becomes much more complex. “How do I reach out to potential mentors?” “Where...very valid questions, and often make an already complicated process even more difficult. I’ve learned that...potential programs and universities stressful or simply not feasible. Through the virtual systems created...
  5. Plasmids 101: Optimizing Plasmid Yields

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    Blog Post
    ...remove endonucleases (see figure at right for an example). Look out for carbohydrates Certain strains, including...the cell lysis process. To ensure that lysis is complete, use a reagent like Qiagen’s LyseBlue, which uses... uses color to show you if lysis is incomplete. Protein expression strains are not good for cloning Bacterial...yields. Why would volume make a difference? In the simplest of terms, more volume = more cells = more plasmid...the material used for inoculation. To further complicate matters, plasmid copy numbers are often ambiguous...
  6. Anatomy of a Plasmid Page at Addgene

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    Blog Post
    ... plasmid page is nested in. You can see in the example above that the bread crumbs trail starts in the...publication. Addgene makes this easy by providing a template citation for you to use in your Materials and ... Use the Addgene catalog number to easily find template citations for Addgene plasmids you have used in...  These sequences are provided in FASTA format (example) and can be analyzed using Addgene’s Analyze Sequence...Price of course! The price of some items vary, for example, plasmid kits are avaliable for less than than ...
  7. Isolating Genomic Regions of Interest with the CRISPR System

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    Blog Post
    ...engineered DNA-binding molecule such as the CRISPR complex is expressed in cells to be analyzed, the Fujii...another "in vitro" form. In this form, the CRISPR complex, consisting of a recombinant dCas9 protein and ...interest with dCas9 and a targeting gRNA. One such example by the Xu lab is CRISPR affinity purification in...purification of a specific genomic region is another example of the many tools based on targeting of a genomic...genomic locus through a specific gRNA-dCas9 complex. When combined with next-generation sequencing, this ...
  8. Plasmids 101: Secondary Nanobody Toolbox

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    Blog Post
    ...incubated together without forming large oligomeric complexes. Antibodies are also too large to be expressed...primary antibody-nanobody mix can be added to your sample, thus eliminating the secondary antibody incubation...two-step staining with antibodies. Nanobodies also simplify multicolor staining experiments because they don...568, or Alexa Fluor 647 before application to the sample. Staining with this multi-color staining workflow...imaging, rapid epitope-mapping and native protein complex isolation. eLife. PubMed PMID: 26633879 PubMed ...
  9. Transferable Skills Guide: Identifying Your Transferable Skills

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    Blog Post
    ...transferable skills you possess because any potential employers, collaborators, or co-workers want to know that...socks, persevered through a nerve wracking commute complete with a disabled train, and now you’re sitting ...sitting in the lobby of (hopefully) your future employer. Your heart is pounding, you’re short of breath, and...my wheelhouse”, take a second to reflect. For example, say your boss approaches your team with a project...these responsibilities. If you are in charge of completing many meticulous protocols or tasks, you’ve probably...
  10. The Effect of COVID-19 on Liu Lab Plasmid Requests From Addgene Data

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    Blog Post
    ...editing, base editing, PACE, and DNA-templated synthesis are four examples of technologies pioneered in his...lockdown for weeks to months, pausing or terminating employment for a significant fraction of the workforce. ...between Jan. 1 and Mar. 1, 2020. Figure 2: A simple approximation of the effect of COVID-19 on data...effects fairly well. However, we observed one complication in the China data – there is a period of 1 month...
  11. Introducing Addgene's New Search - Find Plasmids More Easily For Your Research!

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    Blog Post
    ...including depositing labs and institutions. For example, search for “Melina Fan” and you’ll be able to ...plasmids from a paper have been deposited? In this example we’re going to be looking for recombinant monoclonal...each filter is displayed in parentheses.  In this example I wanted to find a lentiviral plasmid to express... filters you do not need to start a new search. Simply click the ‘X’ next to any filter to clear it. ... plasmids that may be difficult to define for a simple search. These pages provide helpful information...
  12. Summer SciComm Series: Modes of Communication

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    Blog Post
    ... the start, or if you can begin simply and build up to more complexity if needed. And since we live in...socioeconomic status and geographic location. For example, not all social media platforms are available or...expertise needed can increase exponentially with complexity. Podcasts Medium Easy for audience to engage...Written works Low Flexible. Low barrier to entry. Ample distribution channels both digitally and physically...
  13. Sharing Your Lab Protocols: Using Apps to Save Time & Track Your Experiments

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    Blog Post
    ... to copy and modify templates (e.g. http://openwetware.org/wiki/Protocols/Template). Nature Protocol Exchange...happy to upload your newest resources. Here is an example of a plasmid with a downloadable protocol listed...have a record of your work. This feature further simplifies lab work if you like to bring your phone in the...of checking off each step as you painstakingly complete your experiment – one small victory in a long ...
  14. Healthcare Consulting: A Door to the Business of Life Sciences

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    Blog Post
    ...The types of projects mentioned above are just examples, and healthcare consulting firms can be involved...investments over the next 3, 5, or 10 years. Complicating these challenges is the fact that they occur...their jobs most, get pleasure from taking up such complex challenges, quickly breaking them up into smaller... the unpredictability of schedules can take on employee morale and productivity, and many have mechanisms...that, most consulting firms coach and counsel employees on the different personality and work styles (...
  15. Hot Plasmids Spring 2024

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    Blog Post
    ...#211756 (left panel) or #211757 (middle panel). Samples were also immunoblotted against vinculin as a loading...10.1016/j.neuron.2023.03.009. PMID: 37015225.  Simple and highly specific targeting of microglia with...further enhanced by packaging the virus as self-complementary AAV (scAAV). However, scAAV vectors have limited...combination with miR124T targeting sequences, provides a simple yet valuable tool for microglia research and broader...AAV plasmids here! Serrano, C., et al. (2023). Simple and Highly Specific Targeting of Resident Microglia...
  16. Hot Plasmids - November 2023

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    Blog Post
    ...were most efficient at complex edits, such as long or highly structured templates. Cas9 variants PE6e–g...PE6b was very efficient for short, unstructured templates and significantly reduced undesired edits (indels...also make CAR-T cell therapy more accessible by simplifying the production process and could even enable ...tet-responsive element (TRE) or the cFos promoter. For example, neurons treated with a phorbol ester activator...
  17. CRISPR 101: Which Cas9 Do I Choose for My CRISPR Experiment?

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    Blog Post
    ... relevant bases within the editing window, for example all C’s will edit to T’s. Thus, it’s important ...modifiers available. This system utilizes an RNA template containing the desired edit adjoined to the sgRNA...knocking out a particular gene isn’t feasible. For example, temporary repression or knockdown allow you to... target genes using dCas9-based activators The simplest of the dCas9 activators consists of dCas9 fused... proteins. The Synergistic Activation Mediator complex, generally the strongest activator, consists of...
  18. Getting the Most from Your Lentiviral Transduction

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    Blog Post
    ...Lentiviruses are a powerful laboratory tool often employed to establish cell lines that stably express a ... for using lentivirus, infect and select, seems simple, in actuality, many find using lentivirus to be...al. outline a do it yourself PCR-based approach complete with freely available positive controls. Routinely...buffers used, and other experimental parameters. For example, while freeze thaw is generally not recommended...circumvent this problem, transductions typically employ the positively charged polycation, polybrene. Interestingly...
  19. Five Popular Model Organisms, Part 2

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    Blog Post
    ...manipulated for use in molecular biology studies. For example the E. coli biotin ligase, BirA, has been used ...corresponds with human diseases and conditions. For example, the rat is frequently used to study human cardiovascular...abilities. The axolotl has the ability to regenerate complex structures such as limbs, the spinal cord, and ...them an ideal model organism; they are relatively simple to maintain and breed and they have large, easily... and microinjections. Injections of mRNAs, for example, can be analyzed to understand human disease alleles...
  20. Evolution of Brainbow: Using Cre-lox for Multicolor Labeling of Neurons

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    Blog Post
    ...Brainbow multicolor labeling system - a perfect example of the continued utility of Cre-lox. Check out ...recombinations cannot occur. While the Brainbow-1 system employs Cre-mediated deletion, the design of Brainbow-2.1...Brainbow-2 each contained a “default” state; for example, Brainbow-1.0 expresses RFP when the construct ...system, Sanes and Lichtman also developed a complementary Flpbow construct that is functionally similar...technique will provide important insights into the complicated physical organization of the brain and other ...
Showing: 441 - 460 of 929 results