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Showing: 241 - 260 of 889 results
  1. Plasmids 101: Cre-lox

    Type
    Blog Post
    Published
    Jan. 13, 2015, 3:47 p.m.
    ...: PMC49604. 4. Independent control of immunoglobulin switch recombination at individual switch regions...PMID: 8513499. Resources on Addgene.org Find Cre plasmids Find loxP plasmids  ...-lox system is a technology that can be used to induce site-specific recombination events. The system ...key advantage of the system is that Cre acts independently of any other accessory proteins or co-factors...recognition sequences consisting of two 13-bp long palindromic repeats separated by an 8-bp long asymmetric ...certain stages of development, or by making the Cre inducible (such as with tamoxifen or doxycycline), the Cre...unique asymmetric spacer "NNNTANNN", where "N" indicates which bases may vary from the canonical sequence...
  2. Getting Started with Behavioral Neuroscience: Standardizing Experiments and Using Viral Vectors

    Type
    Blog Post
    Published
    Aug. 20, 2019, 12:31 p.m.
    ...Learn about Addgene's viral service Find viral protocols and videos Find AAVs for your research ...historical ties to psychology and philosophy (the mind-body problem). Because of the availability of tools...between animals as olfactory stimuli that were left behind from a preceding animal (ex: urine) can be distracting...Animal Strain, age, sex, housing conditions (individually versus in groups), health status, diet, cage...differences in behavior observation); experimenter blinding to avoid bias Genetic manipulation in behavioral... neuronal targeting after stereotaxic injection. Find more details about choosing AAV or lentiviral vectors...about two weeks before the behavior test. This time window between injection and testing will vary depending...
  3. Open Resources and Plasmid Tools For Studying C. elegans

    Type
    Blog Post
    Published
    July 18, 2019, 12:55 p.m.
    ... International C. elegans meeting, I was again reminded of the extent that C. elegans researchers embrace...worm community where one can publish brief novel findings. These results are normally one figure and can...This a great resource for scientists to publish findings that don't fit into larger publications and would...embryo when all essential embryonic genes are individually depleted via RNA interference (RNAi). Scientists...tools for the community. Plasmids for the Auxin Inducible Degradation System (AID) The Dernberg lab in 2015...controls the expression of a GAL-4 driver that can bind to activation sequences upstream of genes to stimulate...expanded on this tool by splitting cGAL4 in two and binding each half to a gp41-1-N-intein. Split inteins are...
  4. High Complexity Golden Gate Assembly with NEB’s DAD

    Type
    Blog Post
    Published
    Aug. 1, 2023, 1:15 p.m.
    ...don’t use the same overhang twice; (2) avoid palindromes; (3) no overhangs with the same three nucleotides...Fidelity, it turns out, might depend more on the individual sequence(s) than on how well that sequence fits...Pryor et al., 2020), and randomly selected non-palindromic pairs allows for high-fidelity assembly for up...potential for mismatches, so you can redesign individual pieces as needed to improve fidelity. NEBridge...tool for you. Once you input a sequence, SplitSet finds optimal fusion sites to split it into multiple fragments...define the number of fragments, and the “search windows” you’d like the tool to use to identify fusion ... return the highest-fidelity overhang set it can find for those parameters. For even more specificity,...
  5. Plasmids 101: Terminators and PolyA signals

    Type
    Blog Post
    Published
    March 31, 2016, 2:30 p.m.
    ...secondary structure to induce transcript cleavage, similar to the Rho-independent termination found in ...two general categories: rho-dependent and rho-independent. Rho factor is a helicase which assists RNA polymerase...common bacterial expression plasmids use Rho-independent terminators, which include naturally occurring... high-efficiency terminators such as T0. Rho-independent termination is also known as intrinsic termination...secondary structure and sequence conserved Rho-independent termination annotation for 90 bacterial elements...CC BY-SA 3.0, https://commons.wikimedia.org/w/index.php?curid=39322032   No terminator is 100% efficient... than Polymerases I and II, which both require binding of termination factors. Although both are termination...
  6. Hot Plasmids: Summer 2025

    Type
    Blog Post
    Published
    Aug. 28, 2025, 1:15 p.m.
    ...through our Hot Plasmids articles. Here's what you'll find in this post: Bright and photostable yellow fluorescent...fluorescent proteins tend to photobleach rapidly, which hinders their use for long-term imaging or advanced techniques...for your next experiments and see the difference! Find mGold2 plasmids here! Lee, J., Lai, S., et al. ... species, thanks to the broad host range of TRV. Find TRV-TnpB plasmids here! Weiss, T., et al. (2025...non-genetic diversity in human cancer stem cells. Find the LARRYv2 Libraries here! Singh, I., Fernandez-Perez...to order viral vectors ready to use in your lab. Find Addgene’s AAV6 and AAV11 packaging plasmids here...on an antibody-like protein AMPA.FingR (AF) that binds to AMPA receptor subunit GluA1 found at excitatory...
  7. Transferable Skills Guide: Managing a Team

    Type
    Blog Post
    Published
    Jan. 30, 2018, 2:42 p.m.
    ... all”. Manage the individuals in your team: learn what motivates them (keep in mind that it can be very...it will take time so be patient and keep an open mind. First let’s clear up a misconception about being...have reports with different levels of experience), find out what their learning styles are and capitalize...benefit of the team. By properly managing the individuals in your team you will have a much better chance...(needs to) feel valued. Talk to your manager and find a mentor Your manager should support you, just like... how to face a particular situation. But keep in mind that a good manager should help you work through...you and you need to encourage them to speak their minds. They will make mistakes and you will take responsibility...
  8. PITChing MMEJ as an Alternative Route for Gene Editing

    Type
    Blog Post
    Published
    Feb. 23, 2016, 3:30 p.m.
    ...in the genomic locus. The first two breaks are induced via a generic PITCh-gRNA; the third break by an...flanked by 5' and 3' microhomology and PITCh-gRNA binding sites. This PITCh plasmic is cotransfected with...optimized the PITCh-gRNA for minimal off-target binding in mammalian genomes as assessed by CRISPR design... and 3’ junctions, respectively. These results indicate that PITCh is a robust method for genomic insertion...staggered pattern, it is thought to be ideal for HDR-independent knock-ins, but this possibility is still being...systems.” Nat Protoc. 11(1): 118-33. PMID: 26678082. Find the plasmids from this publication at Addgene. ... Cells.” Cell Rep. 13: 621-633. PMID: 26456817. Find plasmids from this publication at Addgene. 3. Zhang...
  9. New Optimized Genome-wide CRISPRko, CRISPRi, and CRISPRa Libraries

    Type
    Blog Post
    Published
    Oct. 4, 2018, 12:44 p.m.
    ...Addgene.org Find CRISPR plasmids and resources here Find pooled libraries available at Addgene Find CRISPRko...mutations result in an inactive RNA-guided DNA binding protein (dCas9). dCas9 is then tethered to a repressive... and Doench lab selected sgRNAs in this optimal window and ranked them based on their optimized sgRNA ...Brunello knock-out library while mitigating toxicity induced by high copy number dsDNA cutting. A Dolcetto library...transcriptional machinery to dCas9 and its RNA directed binding site. These methods include the fusion of an activation...overlapping genes, most genes were unique to the individual libraries. These unique hits may have been false...can be used in complement to study gene function. Find the Calabrese pooled library and lentiviral prep...
  10. AAVs CREATed for Gene Delivery to the CNS and PNS

    Type
    Blog Post
    Published
    Sept. 28, 2017, 2:01 p.m.
    ...the tTA inducer virus, but the desired sparsity of labeling is achieved with lose doses of inducer virus...Gradinaru Lab at Caltech stepped up to the challenge. Find the PHP Plasmids Here! Their Solution: Use the ...viral cocktail are injected, by chance lots of individual cells will be transduced with multiple viral ...notice in figure 4b how difficult it is to trace individual cell’s axons, particularly the two green neurons...expressing RGB proteins under the control of an inducer, i.e. tet-off transactivator (tTA), is injected...that are labeled. Part 2: An AAV expressing the inducer (i.e. tet-off transactivator) is co-injected. The...tag-then-express system that allows for controlled induction of multi-color labeling of neurons (figure 4)....
  11. DNA Purification Without a Kit

    Type
    Blog Post
    Published
    Feb. 11, 2020, 2:15 p.m.
    ... of binding DNA to silica columns, it’s bound to glass syringe filters. Normally DNA does not bind silica...silica are commonly used to bind and purify DNA, cellulose also efficiently binds, or at least entraps nucleic... can be stacked together in series to increase binding capacity. Figure 1: Purify DNA using glass... and 2) it helps DNA stick to the glass. After binding DNA, the glass particles are pelleted by centrifugation...mixture to absorb the nucleic acids. Containinants bind cellulose less tightly than nucleic acids, so placing... Addgene blog Read our Plasmids 101 blog series Find other plasmid protocols and tips Browse our plasmid...plasmid cloning blog posts Resources on Addgene.org Find protocols for molecular biology and cloning Read...
  12. Our Most Popular Blog Posts from 2019

    Type
    Blog Post
    Published
    Dec. 31, 2019, 2:26 p.m.
    ...Blog Read other Addgene news Find the most recent plasmid blog posts Find the most recent CRISPR blog ...Anti-CRISPR, 2in1 Cloning, Fluorescent Voltage Indicators, and Photoswitchable Proteins by Cary Valley,... Jennifer Tsang There are many strategies for finding your clones in an experiment. Read this blog post... Learn about mNeonGreen, mTFP1, and mWasabi and find plasmids containing these fluorescent proteins at...are nucleic acid sequences that fluoresce upon binding a small molecule, are often named after vegetables...Tools for Making Scientific Graphics by Beth Kenkel Find a round-up of tools you can use for making scientific...posts Resources at Addgene Browse the repository Find educational resources at Addgene Search for plasmids...
  13. Editor's Choice, September 2016

    Type
    Blog Post
    Published
    Oct. 7, 2016, 4 p.m.
    ...describes a technique you can use to find phage proteins that bind to your bacterium of interest. For those...contributed the most to this record breaking month and to find other posts that deserve a second look. 5 Great ...colleagues. Technique: Probe Phage Genomes for Host Binding Proteins & Running for Rare Disease, Running for...first, "Technique: Probe Phage Genomes for Host Binding Proteins," was contributed by guest blogger Jessica...dress up as Mr. Incredible, an added bonus. You can find the rest of our September posts in chronological...CRISPR Kinome Libraries Available: Pooled and Individual Plasmid Formats Better Dyeing Through Chemistry... a Lab and a Project That’s it for now. As I indicated in the opening paragraph, I’m currently on my ...
  14. CRISPR 101: Which Cas9 Do I Choose for My CRISPR Experiment?

    Type
    Blog Post
    Published
    Oct. 13, 2022, 1:45 p.m.
    ...within the editing window (bases 4-8 of the protospacer). While this is a small window, this system can ... website Find CRISPR Plasmids Catch up on your CRISPR background with our CRISPR Guide Find Software ...through Addgene’s repository) and make it easy to find your perfect match. Choosing a Cas9 for your knockout... anywhere to be found. If you’re lucky enough to find a SpCas9 compatible PAM at your site of interest...performed on all relevant bases within the editing window, for example all C’s will edit to T’s. Thus, it... capable of interacting with an additional RNA-binding transcriptional activator. Plasmids for activating...the many freely available sgRNA design programs. Find Validated gRNAs for Your Next CRISPR Experiment ...
  15. "Hall of Fame" AAV Enhancers from the Allen Institute for Brain Science

    Type
    Blog Post
    Published
    Sept. 9, 2025, 1:15 p.m.
    ...believe in the power of partnerships with like-minded individuals and organizations, like the Allen Institute...chromatin modifiers. These proteins recognize and bind motifs within the enhancer sequence, then interact...expression of transcription factors, which recognize and bind to different DNA motifs, results in a given DNA ...differential DNA accessibility,” and AIBS uses it to find potential enhancer candidates. To use these sequences...of labeling in each. This allows users to quickly find the tools that best fit their specific experimental...the highest specificity and brightness. You will find enhancers to target many different cell populations...resources. Luckily for us, they like sharing! You can find data, analysis tools, and other scientific and educational...
  16. Neuronal labeling with Spaghetti Monster

    Type
    Blog Post
    Published
    Aug. 14, 2018, 12:42 p.m.
    ...on Addgene.org Find the Spaghetti Monster probes at Addgene Browse all AAV vectors Find ready-to-use AAV...brain. This atlas enables researchers to quickly find the best AAV serotypes to target the neurons they...synthetic peptide FLAG, the synthetic streptavidin-binding strep-tag and, more recently, OLLAS (Escherichia...composed of FPs fused to multiple epitope tags. Indeed, to create the smFPs Looger’s team strategically...a physics graduate from Oregon State University. Find the Spaghetti Monster probes at Addgene Uses of ...structures through their multiple, high-affinity binding sites for primary antibodies which can be used ...Through their multiple, highly specific antibody binding sites and primary antibody-based detection, smFPs...
  17. Career Insights: Technical Support Specialist

    Type
    Blog Post
    Published
    Nov. 9, 2017, 2 p.m.
    ...hoping to follow the traditional academic route (find tips for getting a faculty position here). Possible...comprehensive lab experience. With this valuable training behind you (and largely only that is necessary), there...problems, a general positive attitude, and an open-minded personality. These traits will help you deal with... a customer’s concerns and are patient enough to find the real issue, you will do well in a technical ...troubleshooting or issuing replacement products. In order to find good and helpful answers for customers, internal...are often found in sales or lab-based roles in industry. What to look forward to in a technical support...fascinating and exciting to listen to the many individual stories and get (sometimes refreshing) insights...
  18. New Acoustic Reporter Genes: Ultrasound Imaging of Gene Expression

    Type
    Blog Post
    Published
    Jan. 24, 2023, 2:15 p.m.
    ...bARGSer with several inducible expression systems in E. coli. The arabinose-inducible promoter pBAD and ...replication (p15A) worked best under a wide range of inducer concentrations (0.1-1% L-arabinose) without signs... or at lower temperatures for longer. Cultures induced with arabinose and colonies on arabinose-containing...expression, from left to right: colony whiteness on inducer plates, white inclusions in cells with GVs via ...integratable cassettes, both with doxycycline inducible promoters (Fig. 2a). The first cassette contains... phase contrast microscopy just one day after induction of expression… but longer expression leads to ...plasmids (Fig. 2b). Next, perform a short (12-hour) induction with doxycycline prior to FACS, gating for the...
  19. Binning Singletons: Tackling Conference Networking When You Don’t Know Anyone

    Type
    Blog Post
    Published
    Feb. 18, 2020, 2:15 p.m.
    ...post-meeting survey indicated that the program was largely a success, but also helped us find areas for improvement...really fit in anywhere and everyone who was doing the kind of work my lab wanted to do already seemed to know...Singletons came together. The term Singleton was on my mind because we’d had discussions in my lab about whether...Image: James et al., 2020. Help me stranger - Finding mentors for the meeting Just like analysis pipelines...genes that can improve chances of survival for an individual, and eventually, a community. The experiences...and vastly expand their networks as they naturally find people with which they have interests and experiences...experiences in common. We often refer to this as “finding your people.”    Had a fun time at the #BinningSingletons...
  20. An Inside Look into Addgene's Dev Team

    Type
    Blog Post
    Published
    Jan. 23, 2020, 2:45 p.m.
    ...have the same blind spots, and there wouldn’t be anyone to question these blind spots. Blind spots often...development is not one of the things that comes to mind. The truth is, there is a lot of software development...result of our diversity which in turn minimizes the blind spots in our work.  Agile at Addgene We follow an...short periods of time called sprints. The team is mindful of the number of stories we commit to for each ...reviews because it’s like a little peek into the mind of the developer and I get to see an approach that... this happens, we need to research and hopefully find a comparable library if it’s gone stale or we will...Learn about what went into our search engine update Find all Addgene news Resources on Addgene.org Check...
Showing: 241 - 260 of 889 results