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We narrowed to 616 results for: GAN

Showing: 91 - 120 of 616 results
  1. Tips for Writing a Good Cover Letter

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    Blog Post
    ...asks for strong organizational skills. You might think, “I’d be good at that! I organized my lab data so...important part of the application. Even within an organization, there can be variance. At Addgene, our content...explain why you are interested in working for that organization or group. This is particularly important for...want to talk about! You could describe your organizational system, your rationale for designing it the...title of the position] at [name of the company/organization]. I am a [adjective that describes you] scientist...that particular job, your commitment to the organization's mission, or your deep interest in the lab's...
  2. 27 Hot Plasmids from 2016

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    Blog Post
    ...orphan receptors meaning their ligands are unknown. Identifying new ligands for orphan GPCRs is of significant...Caenorhabditis elegans CRISPR/Cas9 technology has revolutionized genome editing in multiple organisms thanks ...construction of a so-called “genomically recoded organism” (3) but its portability to other bacterial strains...monitoring and analysing autophagy of cytosol and organelles in yeast cells. Named after the brightly-coloured... both in vitro cell systems and diverse model organisms. Addgene’s newest TALEN kit, the FusX assembly...screens required to identify correctly modified organisms has limited routine use of this technology. To...CRISPR/Cas9-based genetic tag insertion in the C. elegans genome, Erik Jorgensen’s lab from the University...
  3. Plasmids 101: Biotinylation

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    Blog Post
    ...an essential coenzyme that is required by all organisms for life. Biotin is only synthesized by plants...enzymes catalyze the transfer of carboxyl groups to organic acids to produce important cellular metabolites...post-translational protein modification. Most organisms have less than five enzymes in the entire proteome...for biotinylating only one lysine in the entire organism on the biotin carboxyl carrier protein (BCCP)....them is one of the strongest noncovalent protein-ligand interactions found in nature. Once the bond is ...is unaffected by changes in pH, temperature or organic solvents. Uses of biotin in molecular biology Biotin...these features it isn’t surprising that scientists began to exploit biotin and its strong interaction with...
  4. Multicolor Animals: Using Fluorescent Proteins to Understand Single Cell Behavior

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    Blog Post
    ... (XFP) of different colors to label an organ or entire organism. Because each cell can have multiple copies...The ability to track single cell dynamics at the organism level has been made possible by tools that allow.... Genes encoding the fluorescent proteins are organized in tandem with a single promoter, but only the...developed for tracking various cell types and organisms and for improving the level of detail possible...that allow for multicolor labeling of an entire organism or a specific tissue. XFPs are introduced using...systems allow single cell dynamics in a variety of organisms to be observed in more detail than ever before...
  5. Viral Vectors 101: Optogenetic Tools

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    Blog Post
    ...tethered ligands hold the ligand in close proximity to the receptor, when exposed to light, the ligand engages...photoswitchable tethered ligands (PTL), and photoswitchable, orthogonal, remotely-tethered ligands (PORTLs). OptoXRs... them. PORTLs use a similar concept, except the ligand is attached to a protein binding partner or nanobody..., McKnight, D. J., Yoshizawa, S., Kato, H. E., Ganguli, S., & Deisseroth, K. (2019). Cortical layer-specific...
  6. Addgene's a Nonprofit? Nonprofit Awareness Day 2017

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    Blog Post
    ...nonprofit" organization what do you think of? Maybe the term brings to mind a social service organization like... about a local food pantry or community arts organization. Many people are surprised to learn that Addgene...nonprofits do with their revenue. A nonprofit organization cannot distribute profits to private individuals...as a nonprofit, we attract partnerships with organizations that share our community-oriented values. Addgenies...Meron, Michael Lo., Michael Le., Michel, Michelle, Morgan, Natashia, Nicole, Olivia, Pamela, Racheal, Ramsey...
  7. Chemogenetics vs. Optogenetics: Which Method Should I Choose?

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    Blog Post
    ...designer ligands that can be simply introduced by injection. The main challenge in using ligands is ensuring...at broad tissue or system-wide targeting, as the ligand can reach target cells throughout the body. Controlling...chemogenetics, while different concentrations of ligands can be injected, this is not as precise and the...brain. One way to address this is by working with organisms with light accessible brains, such as zebrafish...while also being selective and effective. A new ligand from the Bryan Roth lab and Takafumi Minamimoto...
  8. Understanding GPCR Signaling Using TRUPATH

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    Blog Post
    ...transducer complexes that are activated in response to a ligand binding a GPCR of interest. How does TRUPATH work...intracellular surface of the GPCR. Binding of a ligand to the extracellular surface of the GPCR causes...coelenterazine, followed by the addition of the endogenous ligand or drug. In the inactive state, the luminescent...emission. Following activation in response to the ligand, the complex will disassociate, resulting in a ...across the transducerome for a specific receptor-ligand pair. They further used TRUPATH to analyze a panel...This collection can be used to study endogenous ligands, the pathways they activate, as well as the activation...
  9. In Vivo Biotinylation of Bacterial Fusion Proteins

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    Blog Post
    ...affinity for the ligand, especially if the modified amines are located near the ligand binding site. A ...unbound material to calculate the amount of bound ligand (after subtracting out non-specific binding). Historically...dimers, may influence binding kinetics of the target ligand. Another important consideration is whether the...the affinity of an experimental protein-ligand interaction approaches that of GST-glutathione. Biotin-...measurement of high affinity (i.e. sub-nanomolar) protein-ligand interactions. Avidin and its derivatives have four...
  10. A History of Genome Engineering in Popular Culture

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    Blog Post
    ...serve as slaves.  Meganucleases In 1989 the first ever DNA-editing enzymes, meganucleases, were discovered...capability of transforming the genetic code of living organisms and its societal implications even before the ...pneumoniae bacteria could be transformed from one organism to the other. This is now famed as the Griffith...genetics and SciFi.  Scientists around the world began looking for the magic molecule that serves as the...in 1990, just a year after the discovery of meganucleases. The storyline involves the resurrection of ...of all the endonuclease-based gene editors (meganucleases, ZFNs, TALENs, and CRISPR-Cas) is that they ...
  11. RNA Interference in Plant Biology: New Tools for an Old Favorite

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    Blog Post
    ...many organisms. When supplemented with adenine analogs such as 2-fluoroadenine (2-FA), organisms with ...Zurich. He is fascinated by how organisms exquisitely and robustly self-organize at the cellular and multicellular...Fortunately, researchers studying plants and other organisms lacking this innate immunity need not worry and...plants Once you’ve introduced your RNAi into your organism, how do you identify the actively silenced ones... of APT and any gene target of interest, only organisms that are actively silencing to a sufficient degree...
  12. Using CRISPR/Cas9 to Edit Disease Out of the Genome

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    Blog Post
    ... post was originally written in 2014 by Kendall Morgan and updated in 2022 by Lucie Wilson. Lucie is an...used to generate mutations in a wide range of organisms, but its potential to efficiently correct disease...functional correction of the gene in clonally expanded organoids. “CRISPR in adult stem cells has huge potential...potential, because the genomes of adult stem cells in organoid cultures are stable,” said Gerald Schwank, first..., however, because the disease affects multiple organ systems. Nevertheless, the findings are proof-of-principle...of CFTR by CRISPR/Cas9 in Intestinal Stem Cell Organoids of Cystic Fibrosis Patients." Cell Stem Cell. ...
  13. Viral Vectors 101: Viruses as Biological Tools

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    Blog Post
    ...easily deliver their “cargo” to target cells and organisms, and when that cargo is designed to make you sick...biological tools In nature, viruses infect cells and organisms (which we refer to as hosts) via viral particles...and fuse with. In nature, this determines which organisms and cells they infect. In the lab, this means ...can also be directly injected into hard-to-reach organs, such as the brain. Secondly, some viruses have... makes them ideal for applications with whole organisms. Finally, viral delivery is typically straightforward...strong immune response when introduced into an organism. This feature makes them an attractive tool for...
  14. Lighting Up Cell Signaling with Photoswitchable Kinases

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    Blog Post
    ... C. elegans, but activation of Raf-MEK-ERK signaling in the hypodermis and gut cells of C. elegans causes... a signaling pathway in the context of a whole organism, but also allows for precise activation of a kinases...utility of  photoswitchable kinases in vivo with C. elegans. Researchers commonly use rectal bacterial infection...Zhou et al also used a photoswitchable CDK5 in C. elegans. See figures 4B and C in Zhou et al for details..., but they need to be expressed in a tissue or organism that blue and violet light can penetrate. How ...
  15. Antibody Guide

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    Collection
    ...myeloma cells (immortalized B cells). The genetic reorganization that creates variety in the antibody allowing...the variable region goes through a randomized reorganization process, creating a unique binding site. This...
  16. Hot Plasmids - October 2020

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    Blog Post
    ...synaptic proteins Fluorescent protein system for C. elegans Fluorescent timers for studying cell cycle length...fluorescent proteins system for Caenorhabditis elegans By Jennifer Tsang Fluorescent proteins (FPs) traditionally...traditionally introduced in Caenorhabditis elegans on extrachromosomal arrays can lead to artifacts due...locus, but introducing large genetic changes in C. elegans with CRISPR can be difficult since it requires ...use CRISPR to introduce large FP genes into C. elegans? By using a split FP approach. Split-wrmScarlet...they fuse and fluoresce. The team engineered C. elegans cell lines to express wrmScarlet1-10 unattached...
  17. How-to: 5 Steps to a Great Panel Discussion

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    Blog Post
    ...result of the content. Here are some of my tips to organizing and running a memorable panel discussion. Check...make it look effortless to the audience, but the organizers and moderator should have a well-planned approach...panelists to the moderator. The moderator and organizers should develop a list of 4-6 pre-event interview...interview questions. The moderator (possibly with an organizer) should set up a 30 minute call with each panelist...example, at a recent event on nonprofit science organizations, I asked audience members to stand and describe...networking time. Both the moderator and program organizers can help make sure the event stays on schedule...
  18. Fluorescent Tagging of Endogenous Genes with SapTrap

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    Blog Post
    ...been an invaluable resource for studying the organization and function of cellular systems. FPs have been...engineering FP fusions associated with cellular organelles, scientists have been able to study many cellular... by evaluating visual phenotypes. Improving C. elegans fluorescent protein tagging with SapTrap The Jorgensen...SapTrap to improve CRISPR genomic tagging in C. elegans. SapTrap offers scientists a convenient one tube...tagging systems For those who do not work with C. elegans, several groups have designed modular toolkits ...CRISPR/Cas9 Gene Modification in Caenorhabditis elegans.” Genetics. 202(4) (2016):1277-88. PubMed PMID:...
  19. Sharing Your Lab Protocols: Using Apps to Save Time & Track Your Experiments

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    Blog Post
    ...annotating, and storing life science protocols. Since we began sharing this protocol on the Addgene website in ...About Developing Lab Management Software    Organizing and sharing your updated protocols So that’s ... mobile) tools are available for scientists to organize and share their scientific protocols. Here are... various academic labs, and now Addgene. I just began uploading our cloning protocols to the site and ...streamline your lab management and you want the works: organizing reagent storage and inventory, managing orders... can offer a one-stop solution to your lab's organization and management needs. With Quartzy you can share...
  20. Better Dyeing Through Chemistry & Small Molecule Fluorophores

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    Blog Post
    ...protein and (2) a synthetic fluorophore-contianing “ligand” that binds to the tag. Like most good ideas in...selective interaction between a bisarsenical dye ligand (e.g., FlAsH, ReAsH) and a short genetically encoded...specifically and irreversibly with a small substrate ligand motif attached to a fluorophore (Figure 1b). ...catalyze the covalent attachment of a fluorophore ligand to a peptide tag (Figure 1c). Click chemistry...labeling strategies is fluorogenicity, meaning the ligand exhibits low fluorescence when free in solution...the availability of fluorescent and fluorogenic ligands. New fluorophores As a corollary to these innovative...
  21. 5 Reasons to Use Reddit for Science Communication

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    Blog Post
    ...but, ummmm, what is it? Reddit is a volunteer-organized platform where users can participate in forum ...trolls. 3. The AMA process was simple and well organized. You can check out the r/Science AMA Submission...only small downside to the AMA from my end as an organizer/promoter was that I didn’t have the direct link... science talk here). Finally, my main content organizer is the amazing app Evernote. I have a paid account...which gives me all the features I need to save, organize and easily find the resources that I come across...do without it. So get yourself a good content organizer and build your own professional development etc...
  22. Fluorescent Proteins 101: Aptamer Fluorophores

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    Blog Post
    ...Using a technique called systematic evolution of ligands by exponential enrichment (SELEX), some 1010 oligonucleotides...of the next two decades, these nucleotide-based ligand binders would prove to be highly adaptable tools...structure (see Fig. 1a). When the aptamer binds its ligand, the stem loop is disrupted, removing the quencher... dimerization for activation, only in this case ligand binding would bring the relevant ends together ...aptamers fluoresce until they bind to the appropriate ligand, but relying on a lack of fluorescence for readout...response. Aptamers can be selected for these small ligands. References 1. Ma, Hanhui, et al. “Multicolor...
  23. Introducing Addgene's Microbiology Pages

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    ...Collection are sorted by organism (see screenshot above). Don’t see your favorite organism listed? Help us serve...serve you! Let us know about other organisms we should include by emailing us at [email protected]. If...to narrow your keyword search to one of these organisms. Help us continue to develop resources for your...like to get the word out about a particular microorganism, microbial technique, or microbial technology...
  24. CRISPR 101: Engineering the Plant Genome Using CRISPR/Cas9

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    Blog Post
    ... ease of use and utility in a wide variety of organisms.  While much of current CRISPR research focuses... plant species, including commonly used model organisms like Arabidopsis and Medicago truncatula and several...universal functionality of the CRISPR system in most organisms, some plant-specific changes to CRISPR components...experimental design principles developed in other model organisms (see our CRISPR guide for common CRISPR principles...sequence) is consistent between plants and other organisms, but the promoter used to drive gRNA expression...your gene of interest into a target cell line or organism (Presented in figure 1). More information on Agrobacterium-mediated...
  25. New Optogenetic Tools for Cytoskeleton and Membrane Control

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    Blog Post
    ...Optogenetics gives you the power to control cells or organisms with the flip of a switch. You may be familiar...chromosomes during mitosis, support transport of organelles and vesicles, and more. Although several strategies...that means this light-powered sword truly is an elegant tool. The authors demonstrated its use to probe...family proteins support vesicle trafficking and organelle dynamics, but with dozens of family members and...forming the cilia that help establish left-right organization of the embryo (Aljiboury et al., 2023). It’s...and cilia formation during zebrafish left-right organizer development. PLoS Genetics, 19(5), e1010765. https...
  26. Transferable Skills Guide: Conflict Resolution

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    Blog Post
    ...critical in the business world. Companies and organizations that avoid all conflict can fall into “groupthink...individuals involved, and also for the labs, organizations, or businesses as a whole. When I’m attempting... sharing gets more challenging the bigger an organization gets, and creating new avenues of communication...should be communicated is necessary in a large organization, because confirming that every person has read...attempting to resolve conflicts within a given organization, it can help tremendously to have as much context... solutions that benefit themselves and their organization. Resolving conflicts is great, but avoiding ...
  27. How Do I Place an Addgene Order Using a PO Number?

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    Blog Post
    ...through your organization in this field. Please also enter the billing address for your organization. We will...By Natalie Mortenson and Laura O'Regan Ordering jeans online from your favorite store is easy. Ordering...you time. Anyone affiliated with the recipient organization can create an Addgene account and place an order... entered during checkout. At this time, your organization will have net 30 days to complete payment for...
  28. A Conference By Postdocs For Postdocs: Future of Research

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    Blog Post
    ...conference here. The Future of Research conference is organized by postdocs for postdocs. I am delighted to see...importance of the topics to be discussed, the organizers are building valuable skills and meeting new ...Students also partner with independent career organizations to get the grants and programs they need such...offices in the last few years. However, some organizations are woefully behind and some just don't have...Symposium on the Future of Science: A postdoc-organized symposium on the future of the scientific endeavor...
  29. Science Communication Snapshot: DayCon 2015

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    Blog Post
    ...as a free event! Organizing a science conference for the public How does one organize a public scientific...association with the Harvard graduate student organization Science in the News (SITN), we recently sponsored...communication skills and engage with the public. The organization runs a wide variety of programs, including fall...opportunities to improve our communication and organizational skills provide great training for a number ...
  30. Our Most Popular Blog Posts from 2019

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    Blog Post
    ...Popular Model Organisms by Alyssa Cecchetelli and Lukas Morgan There are many model organisms people are...interview including defining your research vision, organizing your vision into a chalk talk, and tips for practicing.... In this blog post, we’ve covered five model organisms: mouse, fruit fly, yeast, zebrafish, and worm....
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