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TypeBlog PostPublishedFeb. 23, 2023, 2:15 p.m....education content. This work exemplifies our long-standing commitment to be responsive to the community’s...environment. In particular, we are working to understand what challenges remain in materials sharing, ...innovation around the world. As always, we seek to understand our role in opening up science to help create...therefore embarking on a strategic refresh to understand this new world and our place in it. This period...
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Fluorescent Proteins 101: History of Fluorescent Proteins
TypeBlog PostPublishedAug. 7, 2017, 1:58 p.m.... the bioluminescent properties observed in the crystal jellyfish Aequorea victoria (Figure 1) in molecular...the Pacific Ocean, off of the coast of Washington state. Using these samples, he was able to isolate two... time. After Chalfie’s work, scientists really started to take notice of GFP, and began to realize its...resulted in much of our current mechanistic understanding of GFP’s function. His lab described the protein... -
Q&A With Julie Cicalese, the Newest Member of the Addgene Board of Directors
TypeBlog PostPublishedMarch 17, 2021, 2:40 p.m....like I understand the science but my prior HR experience at Harvard Medical School means I understand the... like “How do you start to bring people back to on-site work?” and “How do you start to expand operations... -
Developing Transferable Skills During Science Training
TypeBlog PostPublishedJune 3, 2014, 2:14 p.m....addition to learning how to be a scientist. Why not stack the deck in your favor? Look for opportunities to... amazing students at Washington University who started the BALSA group, a nonprofit that provides short-term...stick to timelines Be a mentor in a formal program Start something (a journal, a science lunch club, a biotech...by Peggy Klaus Looking for a mentor or want to start a peer mentoring group? "What Makes a Good Mentor... -
Hassle-free 96-well Format Epitope Tagging Using Cas9 Ribonucleoprotein
TypeBlog PostPublishedJune 28, 2018, 3:01 p.m....cellular milieu. It is, therefore, critical to understand how proteins interact with one another (or with...tagged proteins can be immunoprecipitated using a standard tag-specific antibody (Jarvik and Telmer 1998)...Figure 1). In the first step of optimization, we started off by using custom synthetic two-part cr/tracrRNAs...and then analyzed for tagging efficiency using standard immunocytochemistry (ICC) assays. Figure 1: ...a crRNA cutting 8-15 bp upstream of your gene’s Start codon will be suitable). For N-terminus tagging,... -
Typing CRISPR Systems
TypeBlog PostPublishedMarch 18, 2025, 1:15 p.m....other name would…probably still edit genomes. Understanding the different types of CRISPR systems can be...will help you gain a deeper appreciation and understanding of CRISPR, and perhaps provide insights and ...main aspects of each class and type are easy to understand. Classes are based on the main Cas effector; ...highly unlikely that you will have to know and understand all the minute differences between the CRISPR...Makarova, K. S., Wolf, Y. I., Alkhnbashi, O. S., Costa, F., Shah, S. A., Saunders, S. J., Barrangou, R.... -
Stepping into a Virtual Internship: My Experience at Addgene
TypeBlog PostPublishedAug. 13, 2020, 1:21 p.m....meet everyone but this never happened. I actually started at a later date and worked entirely virtually. ... I was able to express my visions for what my Instagram posts would look like. While working remotely ...continuing Addgene’s Meet an Addgenie Series on Instagram. I interviewed fellow Addgenies about their role... Some of recent Meet an Addgenie posts on Instagram! From this project, I observed what it was ... -
Easing the Protein Purification Process with pCri
TypeBlog PostPublishedJune 19, 2015, 3:08 p.m....requires a substantial amount of properly folded, relatively pure protein, but getting to this stage is often...Additional tags may be used to improve protein stability and solubility. Determining the best way to express...Ni-NTA resin. MBP improves protein solubility and stability. TRX and signal peptide tags help proteins with... -
"What Makes a Good Mentor?" and 6 More FAQs About Science Mentoring
TypeBlog PostPublishedDec. 17, 2013, 2:47 p.m....Mentee? Q1. What makes a good science mentor? I started a conversation about many of these topics with ... Be?” In this excellent essay Acclimatrix, an assistant professor at a research university in the northeast...trainee had such a dedicated person guiding the start of their career. “I want to be a PI that holds my...necessary power dynamic between advisor and students.” Stay tuned for the answers to the other six mentoring... -
Spurred by COVID-19, Addgene Bridges Plasmid Sharing Between Academia and Industry
TypeBlog PostPublishedJune 23, 2020, 1:15 p.m....Bachle and Matt Takvorian When COVID-19 researchers started working with us to help them share their reagents...As infection rates were increasing in the United States, and many universities and Technology Transfer ...California, San Francisco University of Pennsylvania Stanford University University of Iowa University of Minnesota...Proteins, and plasmids from several labs at Florida State University became openly available. Find plasmids... -
London Calling - Addgene’s New Europe Office in London
TypeBlog PostPublishedJune 10, 2014, 3:20 p.m....until now, you’ve always had to call the United States - Cambridge, MA to be exact. Today, that changes...London and operated in collaboration with LGC Standards. And now you’ll be able to call us - Benoit Giquel... Plasmid sharing in Europe: Addgene’s request statistics Since 2004, Addgene has shipped more than 75,...Years of Plasmid Sharing: Interested in more statistics from Addgene's 10 years of plasmid sharing? ... -
In Living Color: The Skinny on In Vivo Imaging Tools
TypeBlog PostPublishedMarch 27, 2014, 5:14 p.m.... If you start poking around on Addgene’s Fluorescent Protein Guide to In Vivo Imaging, you’ll pretty ...allowing higher resolution in samples containing substantial autofluorescence background.” Just last month...genetically-encoded probes by making them brighter, more photostable, smaller, and less toxic to cells. They’d like...answers will be there. References: Bright and stable near-infrared fluorescent protein for in vivo imaging... -
Lentiviral CRISPR Libraries Enable Genome-Scale, Knockout Screening
TypeBlog PostPublishedFeb. 20, 2014, 4:57 p.m....they also went in search of genes involved in resistance to the cancer drug vemurafenib. Enriched libraries...infection into target cells that have previously been stably transfected for Cas9 expression. The Yusa lab has... screen for genes involved in bacterial toxin resistance, identifying 4 previously unknown genes. “With... Institute. “This will greatly aid efforts to understand the function of both protein-coding genes as ... -
CRISPR 101: Multiplex Expression of gRNAs
TypeBlog PostPublishedSept. 10, 2020, 11:45 a.m....construct. DNA and gRNA are not to scale. Let’s start with the simplest multiplexing situation: you only...number. First you generate four unique kanamycin-resistant plasmids, each containing a different gRNA target... all but one of your gRNAs into spectinomycin-resistant plasmids pX330S-2 to pX330S-(last gRNA number)...: Comparison of Multiplex Strategies including Standard PolIII-gRNA cassette, Csy4-cleavable cassette,...dicot plants, with a choice of either hygromycin or Basta selection. Yang Lab Single Transcript Multiplexing... -
Oh, The Places You Can Go: Careers in Science Communication - Science Writing
TypeBlog PostPublishedOct. 3, 2017, 12:11 p.m....about careers in science communication. When I started my Science Communication Internship with Addgene... success feels like a real accomplishment.” He started working on them shortly after joining IDT when ...plans together for my next 4 webinars—I have them stacked close together for the next couple of months. This...killer for science literacy. If people have to understand a lot of big words to access what you have written... -
Addgene's a Nonprofit? Nonprofit Awareness Day 2017
TypeBlog PostPublishedJune 5, 2017, 3:19 p.m....recognized and operated as a nonprofit under the United States Internal Revenue Code 501(c)(3). That means we ... revenue to build reserves so the company is sustainable. The difference is what nonprofits do with their...materials are affordable but enough to make us self-sustaining. With this unique model, we are able to spend...spend resources on maintaining quality and starting new initiatives as opposed to fundraising. Aside from... -
The Blue Flame Award: Celebrating Addgene's Most Requested Depositors
TypeBlog PostPublishedNov. 14, 2016, 3:30 p.m....each, thereby achieving the coveted “blue flame” status. We’re proud to honor the creativity, passion, ...plasmids but lack the resources or personnel to constantly prepare them for distribution. One of the major...and #happydepositor on Twitter. All Blue Flames started with a deposit. Begin yours here. It has been my...Favorite Plasmid Technology Resources on Addgene.org Start a Deposit Find Additional Hot Plasmids Find the ... -
FastCloning: A Newer, Simpler Cloning Technique
TypeBlog PostPublishedNov. 1, 2016, 2:30 p.m.... in your own lab. Table 1: Comparison Between Standard Restriction Cloning and Fast Cloning Requirement...ligated in vivo. Detailed FastCloning procedure To start the FastCloning process, the insert and vector are...efficiency cloning Now that you have a better understanding of the step by step procedure of FastCloning... 1. Celie, Patrick HN, Annabel HA Parret, and Anastassis Perrakis. "Recombinant cloning strategies for... -
Running for Rare Disease, Running for FOP, Running for AJ
TypeBlog PostPublishedSept. 15, 2016, 2:30 p.m.... in the mall. I took action, joined a gym, and started running on a treadmill. After being with the company...treatments, if available. As part of the team, I started adding mile after mile on my poor, poor legs. ...all seems lost in the War of Light, Look to the stars – -for HOPE ...development. His areas of expertise include early stage drug discovery and pre-clinical development for ... -
Sensing Neuronal Dopamine
TypeBlog PostPublishedJuly 30, 2019, 12:59 p.m....decision making, and motor control. What do we understand about Dopamine? DA is produced by specific dopaminergic...dopaminergic neurons in a brain region called the substantia nigra, which is the main source of the body’s...frequency, and this frequency can indicate behavioral state, for example, if someone is awake, agitated, or ...measuring Dopamine In vivo microdialysis The gold standard method of measuring DA and other neurotransmitters...