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  1. Microbes: Look, Listen, and Tell

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    Blog Post
    ... and give a similar optical quality (magnification of 140X and 2 micron resolution). I have worked many... science communication and outreach - if you'd like to learn more about Science communication check out...creative approaches to visualize bacteria in an educational setting. The Symposium on ‘Creative Approaches...from hand-drawn comics (Dr. Sanja Saftic) to educational gifs created by the Amoeba Sisters. Here’s one...Bacterial Genome Engineering Learn about Science Communication using Twitter  Resources on Addgene.org Check...
  2. Fluorescent Proteins 101: When GFP lets you down

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    Blog Post
    ...phosphoinositides (Varnai and Balla, 2008) (Figure 2). RNA production can be detected by using a MS2 coat... 296.5569 (2002): 913-916. PubMed PMID: 11988576. 2. Tsien, Roger Y. "The green fluorescent protein." ... proteins.Therefore, GFP is not suitable for applications that require anaerobic conditions. In experiments...an additional protein module that can report on location. This approach enables the study of proteins in...fusion with GFP allows for detection of genomic locations (Chen et al., 2013). GFP fluorescence overlaps...case when proteins undergo post-translational modification with fatty acyl chains. For instance, myristoylation...C-terminal consensus sequence (-CaaX). Both modifications are disrupted when GFP is fused to these sequences...
  3. "Hall of Fame" AAV Enhancers from the Allen Institute for Brain Science

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    Blog Post
    ...module_attribute "schema_version" is_json="true" %}{% raw %}2{% endraw %}{% end_module_attribute %}{% module_attribute...stereotaxically, STX) to the brain. Figure 2: Selection, prep, and testing of AAV enhancers in ...Brain Science (AIBS). Scientists at AIBS have allocated tremendous time and resources to generate highly...data, analysis tools, and other scientific and educational resources on their website. You can find more...(2021). Transcriptional enhancers and their communication with gene promoters. Cellular and Molecular ...
  4. Our Most Popular Blog Posts from 2019

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    Blog Post
    ...linker sequences, and fusion location, there are many choices to make. 2. Prime Editing: Adding Precision...resources can now be found in one place: the Educational Resources page. So let’s get to it. Here’s the...Anti-CRISPR, 2in1 Cloning, Fluorescent Voltage Indicators, and Photoswitchable Proteins by Cary Valley,...Resources at Addgene Browse the repository Find educational resources at Addgene Search for plasmids at Addgene...
  5. Top 10 Open Science Developments of 2013

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    Blog Post
    ...access to the results of federally-funded research. 2)      In June, the White House honored 13 “Champions...support for open access to peer-reviewed journal publications, although many don’t necessarily publish in ...
  6. Editor's Choice, September 2016

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    Blog Post
    ... of my favorite molecular biology tool, P1 phage. 2) The post describes an ingenious but simple technique...Plasmids at a Low Price: Kits from Addgene Savvy Advocates Needed to Navigate a Scientific Enterprise in ... a Lab and a Project That’s it for now. As I indicated in the opening paragraph, I’m currently on my ...
  7. Antibodies 101: The Basics of Western Blotting

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    Blog Post
    ... a western, proteins are: (1) separated by size, (2) transferred to a membrane, and  (3) detected using...expensive system-specific sandwiches.   Figure 2: The western blot dry apparatus includes a stack of...post-translational modifications, quantify protein levels relative to standards, detect the cellular location of proteins...pull-down assays.  Westerns are divided into two categories, native and denaturing. In a native western, ...matrix, the blotting membrane, the gel, a copper cathode/iblot gel matrix, and filter paper. Pretty much...search, first pay attention to the validated applications listed on the vendor’s website and choose an...western and vice versa.  In addition to validated applications, pay close attention to the controls listed ...
  8. Scientific Reproducibility - Focusing on Solutions at the Minisymposium on Reproducibility

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    Blog Post
    ...Almo, Institute for Protein Innovation  1:18:45 - 2:01:18 (end) - Panel Alex Tucker (Ginkgo Bioworks)...their curation of citable, linkable figures. Cause #2: Hidden “negative” data We all want to be able to ...someone has replicated it precisely. You can find a great discussion of different types of replication in Nosek...perfect story for a “high impact” publication can lead to the publication of rare flukes showing positive...that fall into this category include performing experiments with too few replicates leading to suspect ...these positive results will be published. The publication record will then show that the tested hypothesis...reproducible publishing practices. One example is the publication of peer reviews so we can see how and why papers...
  9. Antibodies 101: Validation

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    Blog Post
    ...another. You’ll need to validate that points 1 and 2 hold true under your specific experimental conditions...when (1) other strategies may not be feasible and (2) large-scale proteomic and transcriptomic datasets...intended application - Remember, just because your antibody performs as expected in one application does ...strategies for antibody validation in different applications. Here, I want to highlight the general suggestions...intentionally generalizable and not specific to certain applications or antibody targets. That said, not every strategy...will be suitable for every antibody or every application. The goal is to show that your antibody has been...strategy to use will depend on your intended application and available resources.     Figure 1...
  10. 6 Steps to Submitting a Resume That Gets Seen

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    Blog Post
    ...having trouble preparing your most excellent resume. 2) Follow job boards and check them regularly Use your...demonstrate in your application). Beware the myths of scientist “overqualification” but it may not be ...Utilizing existing relationships as part of the job application process can dramatically increase the chances... of a resume can be crucial for a successful application. It takes time to prepare an excellent resume... here for more on timely submission of a job application. 3) Read job descriptions carefully Be open minded...bold. You don’t have to have all of the listed qualifications to apply for a position.  A job description...target someone in a specific department and/or location. The more people you meet the better chance you...
  11. Mycoplasma Contamination: Where Does It Come From and How to Prevent It

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    Blog Post
    ...bringing in environmental contaminants.  Figure 2: An Addgenie works in the tissue culture hood while...doi.org/10.1290/1071-2690(2002)038<0086:caeomi>2.0.co;2 Uphoff CC, Drexler HG (2011) Detecting Mycoplasma ... difficult to eradicate. You can suppress the growth of mycoplasma but cannot eradicate it completely....Contamination! Tissue culture media often have indicators included in the media that turns yellow from ...important to prevent contamination rather than eradicating it later. Don’t be scared when mycoplasma infects...the first person to face this kind of problem. Educate others when you can and help them understand the...Cc, Drexler Hg (2002) Comparative Antibiotic Eradication of Mycoplasma Infections from Continuous Cell...
  12. Finding Your Science Policy Path

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    Blog Post
    ...before and during your application process so you can learn more! Figure 2: The many ways to prepare...teaching and mentoring others (see more in Figure 2). Starting early demonstrates not only your interest... policy implementation, program management, communications, diplomacy and international relations, advocacy...they train and bring researchers to Congress to advocate for increased science funding and other issues...sets for a science policy career is science communication so an outsized way to prepare is to do lots ...Initiative.    Get practical experience in science communication by writing for the Journal of Science Policy...
  13. Three Tips to Organize Your Lab Notebooks in the New Year

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    Blog Post
    ...that you can easily spot the colors and text. Tip 2: Use electronic to-do lists to access your tasks on...moving your paper spreadsheets for reagent storage locations, such as the list used to organize your cryo freezer...
  14. From our Table to Yours: An Inside Look at Lunch at Addgene

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    Blog Post
    ...coveted. I’ve only won 2 trophies over the years, which is either an indication of the stiff competition...building activity that is easy to organize. We’ll dedicate a post to these competitions in the future, and...establish, with the goal of fostering better communication between labs. Scientists are often willing to...
  15. Six Spooky Science Stories and Halloween at Addgene

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    Blog Post
    ...melanogaster." Molecular and cellular endocrinology 215.1-2 (2004): 1-10. PubMed PMID: 15026169. Soo, Rochelle... into a pulsating display imitating a moving caterpillar. The worm controls the snail’s behavior, forcing...exposed to predators. Hungry birds spots the “caterpillar” and then poke out the snail’s eyes and ingests...
  16. What's the Best Way to Elute and Store Your Plasmid DNA?

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    Blog Post
    ...elution choices: TE, Tris buffer, or water Figure 2: Tris-EDTA, Tris, or water? The buffer you choose ...If you use a kit for DNA purification or if you use a DIY purification protocol, you might have noticed... mutations in single stranded DNA undergoing replication.   DNase on the other hand can digest and degrade...degradation during plasmid DNA extraction and purification from E. coli is the presence of the protein ...most common E. coli strains used for plasmid amplification are endA negative, meaning the gene has been...chelating agents that can be introduced in the purification protocol to remove endonucleases activity. For...controls the pH, while the EDTA chelates any divalent cations like Mg2+, preventing the activity of DNase. While...
  17. Tag Your Favorite Yeast Genes with Ease

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    Blog Post
    ...et al.(2) describe a modular collection of plasmids for a wide variety of genome modifications in S. Pombe...insert will typically contain both a protein modification sequence and a selectable gene product for isolation...tags have been integrated. Simply design your amplification primers with the desired targeting homology—.... cerevisiae, looking at their performance in categories such as brightness, stability, and disruption...optimal FP combinations for use in yeast imaging, categorized by specific filter sets and experimental output...This collection is ideal for tandem affinity purification of protein complexes. John Pringle and Jürg ...deposited a large collection of plasmids for genome modification in yeast developed by Dr. Pringle’s former lab...
  18. pSiM24: Simplifying Plant Genetic Engineering

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    Blog Post
    ...Agrobacterium infection. At approximately 7 kb, pSiM24 is 2 and 6 kb smaller than commercially available pCAMBIA...for both transient and stable gene expression applications in plants. This smaller, easily customizable...Agrobacterium are termed binary vectors because they must replicate in two species: Agrobacterium and E. coli. Like.... coli. However, they also need to be able to replicate in Agrobacterium to ensure that they are maintained... Thus, binary vectors contain two origins of replication, one each for E. coli and Agrobacterium, along...bases each. By switching the E. coli origin of replication and codon-optimizing the Agrobacterium ORI, they...constitutively active M24 promoter has been modified with duplicated enhancer domains and characterized in studies...
  19. The Open Repository of CRISPR Screens: CRISPR Screen Data in One Place

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    Blog Post
    ...might otherwise be hard to identify. Figure 2: Users can cross-interrogate screens from the literature...   Figure 3: Each publication featured in BioGRID ORCS has a dedicated summary page with PubMed...favorite gene was described in a CRISPR screen publication. You see this mentioned in the results section...manually curated and annotated from more than 45 publications, beginning with the seminal research articles...screen curated in ORCS is linked to the original publication via its PubMed identifier, which can also be ...a list of individual screens curated for the publication. Clicking on the screen name takes users to a... supplemental data tables available with the publication are also provided for the user. This approach...
  20. Seeing Red: Simple GFP Photoconversion

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    Blog Post
    ...Nat Methods. 2009 Feb 6(2):131-3.  PubMed. Find plasmids from this publication at Addgene. Subach OM...Since the first research applications of GFP were published in the 1990s, biologists have spent a lot...color was observed after excitation at 488 nm, indicating that spontaneous conversion did not occur. Tobacco... Sattarzadeh et al., Sci Rep. 2015 CC BY 4.0 Applications and limitations of GFP photoconversion One concern...nmeth.1664. PubMed. Find plasmids from this publication at Addgene.   Addgene’s Fluorescent Protein...
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