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TypeBlog PostPublishedAug. 21, 2018, 12:31 p.m....methodologies, with a special emphasis on these five categories. Please note that many of the following cloning...relies on site-specific recombination reactions catalyzed by BP Clonase and LR Clonase enzyme mixes. After...there is no need for restriction digests, gel purifications, or ligations. The general Gateway cloning protocol...Chaokun, et al. "FastCloning: a highly simplified, purification-free, sequence-and ligation-independent PCR ...
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The Scientific Conference Poster Session: Tips for Success
TypeBlog PostPublishedAug. 29, 2019, 12:50 p.m....but will also give you a chance to slow down and catch your breath before diving in to the next figure....don’t fully understand the question, ask for clarification. Having them reframe or elaborate their thought...system, and is interested in a career in science communication. Resources on the Addgene blog Read other... other posts on scientific communication Find more tips for scientific networking Read this blog post ... -
Mobile-CRISPRi: Bringing CRISPRi to Diverse Bacteria
TypeBlog PostPublishedApril 4, 2019, 12:53 p.m....The vast majority of bacteria are undomesticated which limits the tools scientists can use to study them...the genome and is propagated during normal DNA replication and cell division. Mobile-CRISPRi does not disrupt...single-gene knockdown experiments. Mobile-CRISPRi applications Mobile-CRISPRi expands CRISPRi to non-model ...Elizabeth A., and Pamela A. Silver. "Harnessing undomesticated life." Nature microbiology 4.2 (2019): 212.... -
No Llamas Required - Synthetic Nanobodies Against Membrane Proteins
TypeBlog PostPublishedJune 18, 2020, 1:15 p.m....Starting with libraries and a biotinylated (for purification purposes) protein target of interest, the protocol...-30) of sybody candidates are sequenced for identification. All unique sybodies can be subcloned into ...2020) Generation of synthetic nanobodies against delicate proteins. Nature Protocols 15:1707–1741. https...Light to Manipulate Cell Signaling and Protein Purification RANbodies: Reporter Nanobody Fusions Plasmids... -
Chromoproteins: Colorful Proteins For Molecular Biology Experiments
TypeBlog PostPublishedFeb. 4, 2020, 2:15 p.m.... sequencing are more definitive, but visual identification is a good place to start before taking on more...resources are limited or for bioart and teaching applications. Find a chromoprotein for your experiment! ...events: The plasmid carrying the desired genetic modification integrates into the genome (Figure 3). Here,...of Allelic-Exchange Vectors for the Scarless Modification of Proteobacterial Genomes. Applied and Environmental... -
Addgene's Cancer Collection Pages Connect the Research Community
TypeBlog PostPublishedSept. 6, 2016, 2:30 p.m.... millions of people die from cancer-related complications each year. Despite these grim statistics, new...any of these genes through several different applications such as fluorescent protein fusion studies and...Lemieux is a Scientist at Addgene with interests in education and scientific writing. References 1. Martz...Martz, Colin A., et al. "Systematic identification of signaling pathways with potential to confer anticancer... -
Transgenic Organisms, Cas9 Gene Drives, and Appropriate Safeguards
TypeBlog PostPublishedMay 22, 2015, 4:58 p.m....strategies is strongly advised. The effects are multiplicative, and there are very few gene drive experiments...An accidental release could delay real-world applications against scourges such as malaria and dengue ...about gene drives can be found in the referenced publications. Thank you to our guest blogger! An inventor...2003). PubMed. Esvelt, K. M., Smidler, A. L., Catteruccia, F. & Church, G. M. Concerning RNA-guided gene... -
Getting to Know Expansion Microscopy
TypeBlog PostPublishedJune 20, 2023, 1:15 p.m....with an abundance of protocols and examples of applications from across disciplines now available. In this...experiment or evaluating ExM images in a new publication. Why Expansion Microscopy? Traditional...microscopes sounds great, right? But there is always a catch - some limitation of the technique that users should...Tissue expansion is not compatible with in vivo applications and there’s just not much to be done about that... -
CRISPR 101: Making a Knock-In Cell Line
TypeBlog PostPublishedDec. 22, 2022, 2:15 p.m....cut site location Position your CRISPR cut site as close as possible to the knock-in location. HDR depends...sequence to be incorporated at a precise genomic location, with little to no room for error. It’s no surprise...nutrients in their media, they will not undergo DNA replication, so make sure you are keeping an eye on those... -
Uncovering Ancestral Bias in CRISPR Research
TypeBlog PostPublishedNov. 29, 2022, 2:15 p.m....Dependency Map cancer cell lines (left). Heatmap indicating the breakdown of ancestry associated dependencies...machinery where to cut. Fig. 2: Heatmap indicating loci where SNPs reside on sgRNA target sequences...Understanding the impact Fig. 3: Histograms indicating the frequency (x-axis) which SNPs map to thetargeting...same reference genomes and libraries. Further complicating the issue is the long and ugly history of reporting... -
A Guide to Starting Your Own Journal Club
TypeBlog PostPublishedFeb. 6, 2020, 3 p.m....emerging work by collaboratively discussing recent publications in a specific field(s). Most anyone who has ...the company at large, by polling and informal communications we made a decision to try out a Bioinformatics...major findings and then focusing more on broader implications rather than diving deep into the individual .... These variations are suited for different applications and should be carefully chosen for each group... -
INTEGRATE: Bacterial Genome Engineering Using CRISPR-Transposons
TypeBlog PostPublishedDec. 7, 2020, 2:53 p.m.... and have been adapted for a wide variety of applications - as mutagenesis tools for genetic studies (... The process also creates a 5-bp target-site duplication (TSD), a hallmark characteristic of the Tn7-family...the new streamlined VchINT system was shown to catalyze insertion of mini-transposons up to 10 kb in size...at one or multiple desired genomic loci. Many applications of these systems have already been demonstrated... -
Don’t FRET: Bimolecular Fluorescence Complementation Makes Visualizing Protein-Protein Interactions Easy
TypeBlog PostPublishedAug. 27, 2020, 1:15 p.m....PIPs, resulting in a fluorescent readout. Applications for bimolecular fluorescence complementation...resulting from the assayed PPI. This high-throughput application is much more straightforward to carry out because...protein construction, cellular expression, and quantification (Kerppola, 2006, 2013). These are described... supraphysiological expression levels. BiFC quantification This is where BiFC outshines FRET — BiFC experiments... -
Better Dyeing Through Chemistry & Small Molecule Fluorophores
TypeBlog PostPublishedSept. 8, 2016, 2:30 p.m....Subsequent advances in fluorescent proteins have replicated many of the properties once exclusive to small-molecules...phosphopantetheinyltransferase) – These enzymes catalyze the covalent attachment of a fluorophore ligand...labels for fixed-cell imaging, not for live-cell applications. Thus, these fluorophores are often bulky and...the Addgene Blog Learn About Other Protein Tags Catch Up on Your Fluorescent Protein Background Which ... -
Tips for Screening with Yeast Two Hybrid Systems
TypeBlog PostPublishedOct. 22, 2015, 2:30 p.m.... can often be accounted for using appropriate replicates and controls (see Tips below), and by validating...two-hybrid screening Minimizing false positives: Run replicates of the experiment to reduce the likelihood of...expression and correct folding, post-translational modification, protein degradation, access to the nucleus ...co-expression of the enzyme responsible for the modification in the assay host strain can help. In order... -
Plasmids 101: Gateway Cloning
TypeBlog PostPublishedJan. 12, 2017, 3:30 p.m....attP sites of the donor vector. This reaction is catalyzed by the BP Clonase enzyme mix and generates the...sites of the destination vector. This reaction is catalyzed by the LR Clonase enzyme mix. As a result, an ...carry different antibiotic resistance markers (indicated here by plasmid color), allowing you to easily...is simple - no restriction, ligation or gel purification steps are required! Multiple fragment cloning... -
Mesothelioma - Causes, Symptoms, and Treatment
TypeBlog PostPublishedDec. 13, 2016, 3:30 p.m....cancer. These later stages of a cancer diagnosis indicate, for Stage 3, that the cancer is large in size...size and may have spread while Stage 4 indicates that the cancer has spread from where it originated to ... dire prognosis for mesothelioma patients is to catch the disease earlier. New techniques are currently... working to fight the cancer. Beyond early modifications to standard treatments and early detection, ... -
Analyzing CRISPR Editing Results with ICE from Synthego
TypeBlog PostPublishedMay 8, 2018, 1 p.m....either one at a time or as a batch of hundreds, and indicate the guide RNA sequence you used. The ICE tool ...are no parameters that need optimizing and no complicated steps to learn. For increased flexibility and...checked circle. Typically, a yellow check mark indicates that a particular parameter was automatically ...support team at Synthego. Her work centers around educating and supporting novice to expert-level researchers... -
Advanced Uses of Cre-lox and Flp-FRT - A Neuroscientist’s View
TypeBlog PostPublishedOct. 19, 2017, 1:54 p.m.... gives you a single level of control without modification - either Cre is there or it’s not. Cre-mediated... sites can lead to excision, inversion, and translocation of DNA in a similar fashion as between loxP ...37 °C). Smart molecular evolution led to the identification of FLPe which has a temperature optimum of ...-LDB domains of the fusions allowing Cre/FLP translocate to the nucleus where they exert their recombinase... -
The Challenges of Cell Culture
TypeBlog PostPublishedMay 5, 2016, 2:30 p.m....Marker-independent identification of glioma-initiating cells. The International Cell Line Authentication Committee...propagation of the line, and can include assays for authentication and contamination) and cell lines can become...let alone the human cost. Here are just a few publications which have since been retracted due to cell ...