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...Homologous recombination is the process by which nearly all domains of life repair genomic damage, specifically...their findings, the authors recommend optimal FP combinations for use in yeast imaging, categorized by specific... of yeast tagging modules with each possible combination of protease site (TEV or PreScission), epitope...protease site)-6xGly linker-(epitope tag)-ADH1 terminator-(selection marker). Additionally, Dr. Formosa...

...repress gene expression. In the dark, the NLS is inaccessible and the complex remains in the cytoplasm. Read...editors with minimized off-target DNA editing The original cytosine base editor, BE3, induces a low frequency...validated CBEs with reduced Cas9-independent deamination. They generated these editors using the BE4max... Fusing epigenetic modifiers such as TET1 with inactive Cas enzymes can alter gene expression via acetylation...

... centers in Boston.  I was relieved because it finally feels to me like the postdocs are taking some steps....  His list is dire:  The current system is unsustainable, hypercompetition is corroding values, we are...awards systems need to be radically overhauled.  Finally, the science publishing system needs to be changed... scientists to start addressing this problem.  Finally, one point made by Dr. Graham Walker, Professor...

... the discussion in markers on a whiteboard. The final image is pictured here…she started from a blank ...labs and the importance of the strong, cross-disciplinary collaboration they shared to the work they did...extra fun) who shared first authorship on their seminal, cooperative paper in Science.  Interestingly, ...forever. He emphasized the potential of this extraordinary breakthrough. In fact, the panelists agreed ...

... nuclease folds found in other proteins. The C-terminal domain (CTD) of the protein also belongs to the...Sternberg et al., 2014). The nuclease lobes are inactive in the absence of guide RNA, preventing Cas9 from...loaded and the DNA sequence is recognized, it’s finally time to cut! The HNH domain, which cuts the target...flexible; it can rotate about 140 degrees between inactive and active conformations (Bravo et al., 2022; ...on this topic are still being made! Conclusion Finally, we can summarize the process from start to finish...

...lines: ones either suspected to be contaminate or easily contaminated, as well as commonly misidentified...informative. Spoiler alert: HeLa is the most common contaminator line.  For those wanting to access Cellosaurus...profiling, you can use Cellosaurus, and CLASTR, to finally know whether it was an 'h' or a 'b' written on ...

...still free, and different regions of the spinal cord were illuminated. By looking at groups of neurons that...expressed the LiGluR opsin in different subsets of spinal cord neurons using the Gal4/UAS system. This created...dissection of a behavioural module in the vertebrate spinal cord." Nature 461.7262 (2009): 407. PubMed PMID...

...sequence through a mechanism called depurination. In depurination, the hydrolysis of the glycosidic bond... DNA stability in solution are pH and DNase contamination.  Extreme pH can denature, break, and even change...gene, there are usually extra steps like heat inactivation, protein degradation, and/or the use of chelating...

...the AAV genome’s two inverted terminal repeats (ITRs); but when recombinant AAV (rAAV) is made in the lab...generates the different C-terminal regions of the Rep proteins. While the unique N-terminal domain of Rep78 and...

...some public speaking and a bit of video work for webinars (get tips for your next science talk). I do illustrations...website quite a bit.” Out of all of these tasks, webinars are Hans’ favorite thing to work on. “It’s one...someone to take over hosting them. Since then, webinars make up a larger part of Hans’ workload. “I am...getting abstracts and plans together for my next 4 webinars—I have them stacked close together for the next...

...guide to becoming a successful writer. When I originally talked to my PI about becoming a better writer...aspects to it: videos starring Roberto Kolter, webinars taught by Peggy Cotter, Mary O’Riordan, and Victor...don’ts of that week’s piece of a manuscript. The webinars were my favorite part due to the interaction with... the individual figures and results to make the final product with an interesting introduction and concise...

...particles. A single viral particle is called a virion. Finally, viral vectors, which are used in the lab, are ...contrast to bacteria and eukaryotes, which use a binary replication process whereby one cell copies itself...engineering controls — changes made to the virus that eliminate or reduce the risk of infection — researchers ...genetically modified to either limit or completely eliminate their replicative ability. The remaining particle...

...Ultragenyx Pharmaceutical in 2017. As one of the original employees at Dimension Therapeutics, she helped...interested in for a long time. “At an early age, I was fascinated by the impact that medicines can have on human...during graduate school at MIT. “I read some of the seminal papers on cell cycle discovery from Lee Hartwell...delivery. In 2018, he interviewed Addgene co-founder Melina Fan and former Associate Director of Viral Vectors...

...preparation approaches described previously require a preliminary double stranding step. The double stranding step... library preparation procedures. This finding eliminates the double-stranding step and reduces both the...confirm the identity of AAV genomes and detect contaminating AAV DNA. In addition, we wrote an open-source...uses the VGS data to determine the percent of recombination present in Cre-dependent vectors and a script...

...disturbing the tissue for imaging or collection could contaminate it. I have used it for selecting transformation...promoter with self-cleaving 2A site linkages and a terminator. Image from He, Y., Zhang, T., Sun, H. et al....untransformed seed from the same plant beginning to germinate. (Top right, second panel) Transformed seedlings... Biology Department at the University of North Carolina at Chapel Hill. He has a passion for microscopy...

...the first vaccination and after both vaccinations. For the B.1.351 variant, a single vaccination didn’t ... SARS-CoV-2 variants coincide with increased vaccination efforts. So, how effective are the current vaccines...

...sequences on a daily basis, many found these tools inadequate for planning, visualizing, and documenting their...elements such as promoters and transcription terminators, the boundaries are less obvious. We found that.... In an effort to be rigorous, we dug into the original literature, some of it decades old, to provide...mismatches, our algorithm could annotate a feature inaccurately. The best example is fluorescent proteins, which...

...electrical activity through imaging. Since it’s illuminated by red/orange light, Archon1 can also be used...Chimeric channels for neuronal manipulation Recombinases Plasmid Serotype Name 50363  AAV5  AAV ...labeled neurons because background fluorescence from inactive neurons is reduced. 105322  AAV1  pGP-AAV-...densely-labeled neurons because background fluorescence from inactive neurons is reduced.  Additional resources...

...next experiment. Nucleic acid based machines Recombinase-based State Machines Enable Order-dependent Logic...inputs are received by a cell. These so-called recombinase-based state machines could potentially be used...development. Read this post to learn more about recombinase-based state machines and how they function. Adapting...them. CRISPR Pairing CombiGEM and CRISPR for Combinatorial Genetic Screening CombiGEM is a technology that...

.... We will continue to provide you with more fascinating, informative, and actionable content in the coming...genome editing.   2. Plasmids 101: Cre-lox Cre recombinase can be used to generate inversions, deletions...Blue-White Screening Getting a lot of empty vector contaminants in your cloning experiments and tired of having...you’ve made the right one. In this post, Addgenie Melina Fan guides us through the basics of the validation...