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We narrowed to 1,020 results for: NTS;

Showing: 361 - 380 of 1020 results

  1. Fluorescent Proteins 101: Photoactivatable Fluorescent Proteins

    Type
    Blog Post
    ...designed 2 variants of EosFP that can withstand these conditions- mEos4a and mEos4b (12). Both variants are ... random mutagenesis screening for enhanced RFP variants. PA-mCherry (E26V / A58T / K69N / L84F / N99K ...respectively. When illuminated with violet light, both variants are photoconverted to forms that emit brighter...temperature below 30°C and this is not ideal for experiments in mammalian cells. Dendra2 is another monomeric...PA-FPs. Several other irreversible PA-FP spectral variants have been discovered such as Kaede and PS-CFP2...protein for your experiment Similar to performing experiments with standard FPs, before choosing a PA-FP for...even begins! If you are performing multicolor experiments, you will want to be sure that the light used...

  2. Live and Let Dye: Self-Labeling Protein Tags

    Type
    Blog Post
    ...with different fusion proteins for different experiments over the years — a green fluorescent protein,...choose different colors or ligands for different experiments without having to clone a whole new construct...Live-cell labeling strategies. The green structure represents a fluorophore or other useful ligand, gray structure...HaloTag is actually HaloTag7, and recent specialized variants run up to HaloTag11. HaloTag is now the most popular...the results right away. Or perform pulse-chase experiments by sequentially adding different ligands to the...between different colored ligands at different time points.   Figure 3: Single-molecule tracking of...assembly-regulating proteins in vitro reveals complex events. a) Micrographs of a fluorescently-labeled actin...

  3. Advancing Biology with Zebrafish: Genetic Tools for Developmental Studies and More

    Type
    Blog Post
    ..., including investigations into environmental pollutants and health, embryo growth, brain function, and...visualize expression data in useful ways. Zebrafish mutants In the 1990’s, two revolutionary large-scale random... mutagenesis screens produced ~1,500 zebrafish mutants that are still used in labs across the globe (Nüsslein-Volhard... in congenital heart defects and cancer. These mutants are used extensively to study development and disease... Database ZFIN actively curates information on mutants and other resources. Targeted gene deactivation...deactivate genes without spending months generating mutants. Unexpectedly, phenotypes sometimes differ depending...embryogenesis live. The origins, divisions, and movements of each of the thousands of cells in the developing...

  4. Neuronal labeling with Spaghetti Monster

    Type
    Blog Post
    ...processes enabling organisms to control their movements and behavior. These functions and others are controlled..., that facilitate immunohistochemistry (IHC) experiments with tag-specific antibodies. The most famous... cannot be detected directly in live imaging experiments. It is therefore difficult to use epitope tags...fluorescent and can therefore be used in live imaging experiments crucial to studying neuronal circuits and dynamics...protein localization, isolation, and tracking experiments (Rizzo, 2009). With many different FPs that emit...researchers can also use multiple FPs in single experiments and visualize numerous molecules or structures...only a single channel. In multi-color imaging experiments, the second color is usually provided by red ...

  5. Bricking Science: Portraying Scientific Reality Through LEGO

    Type
    Blog Post
    ...researchers and PhD students. Everybody in science knows that there are many ways your experiments can go wrong...researcher doing some experiments in Brazil can have the same issues as one doing experiments in France. We can...samples, or a dysregulated water bath boiling your experiments, just about anything can disrupt your bench work...research. Find Protocols Lab Tips to Keep Your Experiments Running Smoothly and "Gnome-Proof" This is why...laboratory has never faced an odd situation with experiments? Our art simply mirrors our lives at this point...discovered that it can be good for you and your experiments to think outside the box, be creative, and put...

  6. Thoughts on the Future of Research 2015 Boston Symposium

    Type
    Blog Post
    ...on during the symposium was “How many graduate students/post-docs?” You can find some of the more detailed...even than the $21/h [on the low end] that grad students are paid before fringe benefits); what they don...receive as postdocs is not transferrable to other environments. Slide from Paula Stephan’s Talk (All slides...standard option for scientists by requiring graduate students to pay for part of their tuition. Having trainees...postdoc salaries be paid on fellowships instead of grants such that PIs no longer save grant money by paying... still be there without restructuring. Positive Points for Trainees - Taking Steps to Achieve a Successful... all traits you are likely to find in graduate students and postdocs. Trainees however, need to be made...

  7. 5 Uncommon Ways to Gain Career Skills During an Uncommon Time

    Type
    Blog Post
    ...that find events stressful. Video chatting makes it pretty easy to make 30 minute appointments with people...academia is run by grant funding. Learning to write grants quickly, efficiently and effectively is a valuable...valuable skill. There are many different kinds of grants that you can apply for. If you are in a lab, your...practicing and getting familiar with the process. Bonus points for being able to just look at a paragraph and ...Here are some sites that have compiled lists of grants: Science: Where to Search for Funding The Ohio...For Your Research University of Florida: Training Grants and Other Funding Opportunities L’oreal USA For...that you've been working on, let us know in the comments below! Additional resources on the Addgene blog...

  8. Reagent Repositories Are Speeding up Science During the Pandemic

    Type
    Blog Post
    ...the pandemic, it’s hard to get these reagents. However, when reagents have been made available through a...because they provide rapid access to validated reagents, especially during a time when these materials...Everyone. Case study 1: Cell lines Many of the reagents used to investigate SARS-CoV-2 were developed ...endeavor. Case study 2: Plasmids Another example of reagents that have broad applications but have proven useful...plasmids and resources! Case study 3: Mouse strains Reagents developed during the SARS-CoV pandemic more than...from the scientific community. Deposits of new reagents, policies from journals and granting agencies ...for storing, validating, and distributing such reagents are all ways in which the scientific community...

  9. R Bodies: Membrane-Rupturing Microscopic Tools

    Type
    Blog Post
    ...muscle contractions) are produced by orchestrated movements of networks of proteins consuming molecular fuel...undergoing local conformational changes. These tiny movements are then amplified tens or hundreds of thousands...decades, and they were known to be resistant to detergents and degradation under a variety of conditions...see figure to the right), we identified R-body mutants that extend at both lower and higher pH. We initially...initially used this screen to find R body mutants that couldn’t extend at a normal pH and later realized...F. R. Organization and expression of genetic determinants for synthesis and assembly of type 51 R bodies...

  10. Hot Plasmids: Spring 2025

    Type
    Blog Post
    ...large library of iGluSnFR3 mutants, identifying the two  best-performing variants as iGluSnFR4f (fast deactivation...iGluSnFR4f is well-suited for imaging rapid synaptic events such as in the somatosensory cortex, while iGluSnFR4s...display, they recommend the NGR vectors for most experiments. These new tools promise to be a popular choice...line creation a breeze. Modular by design: Key elements (promoter, tag, polyA site) are flanked by unique...insertion through targeted CRISPR homing of retroelements." The Abudayyeh-Gootenberg Lab developed this...based on several new site-specific retrotransposon elements they identified and characterized (Fell et al....untranslated regions (UTRs) outside of the homology elements allowed for scarless insertion — no UTR sequence...

  11. Finding Your Perfect Job After University

    Type
    Blog Post
    ...of the work, such as physically carrying out experiments like PCR and running gels, but in research you...in Ghana. My role involved teaching the nursing students and community health workers some basic biology...spreadsheets. It was great to be in the lab doing experiments  without the constant fear of failure because...company carries out clinical trials of drugs and treatments for external companies. It was really exciting... particular situation, communication between departments was sometimes difficult and the solution attempted... companies which are reliant on contracts with clients is that, when those contracts fall through or are...pancreatic cancer where one drug does not work for all patients, leading to very high mortality. I really loved...

  12. Sweating the Small Stuff: Details in the Lab

    Type
    Blog Post
    ...small errors that significantly impacts your experiments. What do you do when you’re in the lab and you're... steps like “check drawers for light-sensitive reagents” or “re-sterilize now.” Have a physical copy of...Have a physical copy on hand as you run your experiments. Try drawing out a protocol as you read it, or...an investment in accuracy.  Bench setup Small adjustments in the physical organization of your workspace...you track samples as you add them. Moving your reagents from your left side to your right as you use them...are endless.    Fig. 2: Blugene moves reagents from left to right as they use them.    Prevent...focus, which was extremely effective. Others ran experiments at odd hours, used more secluded workspaces, ...

  13. Viral Vectors 101: Inverted Terminal Repeats

    Type
    Blog Post
    ... model. AAV plasmids contain several important elements, but among the most important are the inverted...inverted terminal repeats (ITRs). ITRs are the elements that make an AAV plasmid an AAV plasmid.  Within the... and initiate replication. ITRs are cis-acting elements, which means that they are in the same DNA molecule...types  Since ITRs are one of the most important elements of AAV and rAAV vectors, modifications can affect...prevent unwanted mutations?  During propagation, mutants rapidly replicate in a growth culture and result... sequencing is also helpful in quantifying ITR mutants since analysis of individual reads allows for identification...the Addgene blog Viral Vectors 101: Viral Vector Elements Viral Vectors 101: Pseudotyping Viral Vectors ...

  14. Sharing is Caring: But How to Distribute Open Hardware?

    Type
    Blog Post
    ...consumer-grade components. In this field, often referred to as 'frugal science', existing components are adapted...opportunities) to modify the device for individual experiments. Manufacturers rarely provide the construction... by the manufacturers and enables customized experiments. Projects such as the OpenFlexure Microscope ...   Taking this all together, the essential ingredients of open-source microscopy are as follows: Detailed...around the use of commercially available tools and components. Rapid prototyping techniques such as 3D printing...can literally put their work on the shoulders of giants. The still relatively young movement of sharing...similar goal. The sharing of modules, ideas, and blueprints has the potential not only to accelerate scientific...

  15. Protein Tagging with CRISPR/Cas9: A Conversation with Mendenhall and Myers

    Type
    Blog Post
    ...of DNA Elements Project (ENCODE), an NIH-funded effort to define all of the functional elements in the...similar. There may be other variants of this that are better for some experiments than those we’ve put up....Eric Mendenhall of the University of Alabama in Huntsville explains it, a major goal in his laboratory is...groups got together to adapt CRISPR for tagging experiments and it’s already looking like it’s making a big... system is really quite simple but it offers improvements in efficiency and throughput. In adapting the...developed their own system or who use and adapt our reagents to think about adding them to Addgene’s special...

  16. Back to Bacteria: CRISPR gRNA Multiplexing Using tRNAs

    Type
    Blog Post
    ... just that as part of their CRISPR work in rice plants. Yang was intrigued by the tRNA processing machinery... in eukaryotes (E in bacteria), and only a few elements of tRNAs are necessary for recognition and cleavage...addition, tRNAs contain internal transcriptional elements that enhance pol III transcription, potentially...also examined editing efficiency in intact rice plants, comparing traditional gRNA constructs with PTGs... five gRNAs were tested, they found that 50% of plants had biallelic mutations at all five loci. This ...Although Xie et. al characterized the system in plants, PTGs will likely work well in many different biological... regions, such as noncoding RNAs or regulatory elements, to examine their function. Bacteria and viruses...

  17. Form Your Own Peer Mentoring Group: A How-To Guide for Scientists

    Type
    Blog Post
    ...Mentoring Group all participants act as both mentors and mentees. Because the participants are at a similar...make mentoring less mysterious and train the participants in skills useful for future mentoring relationships...at the same time Broadens the network of the participants Can be a lot of fun! Form your own peer mentoring...mentoring group In my travels speaking to grad students and postdocs I have started to talk to trainees....g. all women, all men, all postdocs, all grad students) or mixed for one or both of these criteria. If...you can, include people from different labs, departments or organizations as it brings a diversity of ...perhaps a 3 hour breakfast once a month. All participants must commit to making the meetings a scheduling...

  18. Human Germline Editing Using CRISPR

    Type
    Blog Post
    ...Nature gives us even more to talk about, as it represents another step towards CRISPR germline editing ... the field will move forward from this work. Experiments & major findings Let’s start with the paper itself...forward with gRNA 1 to conduct microinjection experiments in S phase zygotes at 18 hr post fertilization...are needed for proper development. Ma et al.’s experiments showed a 3% mosaic rate, and this rate would ...to correct the hype when we see it. This paper represents a huge advancement in our understanding of how...perform in embryos but also shows that many more experiments are needed before we can consider clinical applications...applications for germline editing. Although this paper represents a large step forward in the CRISPR field, it’...

  19. Giving gRNAs a Facelift - Synthetic and Beyond

    Type
    Blog Post
    ...that stability of the RNA used in CRISPR-Cas9 experiments – the “gRNA” – suffers from the same issues as...nuclease-resistant, resulting in less off-target events. While both have similar advantages, bridged nucleic... Editing). This is particularly important in experiments in which viability is being compromised by introduction...CRISPR-Cas9 system can initiate targeted editing events. Both technologies utilize chemical modifications...gRNAs? Dye labeling the RNA in your targeting experiments allows you to visualize transfection efficiency...efficiency and even track localization in cellular experiments. There are many suitable dyes to choose from ...-703 (2020). https://pubs.acs.org/doi/10.1021/acscentsci.9b01093 More resources on addgene.org  View ...

  20. Announcing the Winners of the 2021 Michael Davidson and Roger Tsien Commemorative Conference Awards

    Type
    Blog Post
    ...We are excited to announce the recipients of this year’s Michael Davidson and Roger Tsien Commemorative...researchers, in addition to postdocs and graduate students as we have done in the past. Below, read about...Filip Tomaska and Tim Hanson, are characterizing variants of iGluSnFR3 in vivo and have used it to detect...post-transfection, excited at 505 nm (right). Scalebar represents 100 µm. Image from Abhi Aggarwal.   Brandán...providing insight into new methods for treating patients in recovery from opioid use disorder,” says Hubbard...line engineered to be electrically excitable. The mutants are co-expressed with a photoconvertible fluorescent...photoconverted, sorted, and sequenced to identify the mutants for further enrichment. Tian notes that this platform...
Showing: 361 - 380 of 1020 results