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... on advancing the paper-based platform toward a more field-ready format when the Zika virus outbreak was... 2014). The second was an in vitro paper-based platform that allowed gene circuits to be deployed out ...out of the laboratory in a cell-free and biosafe format that was stable for up to a year at room temperature...we say the timeline to develop our paper-based platform into clinically relevant diagnostics for the Zika...prototyping pipeline that can take pathogen sequence information from public databases to the production of validated...regions of the genome, we have deposited the best performing sensors and constructs encoding corresponding...and electronic companion technologies that has transformed the assay’s capabilities. Specifically this includes...

...are suitable for in vivo studies, our scientists perform all the standard quality control assays for AAVs... and Seqwell’s plexWell technology, we can now perform NGS at Addgene to sequence all the DNA packaged...should align to this reference sequence. Second, we perform a megaBLAST search on all the reads that did not...assembly of the unmapped reads, employing our bioinformatics software to assemble the reads into longer ...developed custom open-access Python scripts that can perform a deeper analysis of the data. Our serotype detection...contaminants in AAV preparations and provide information on these DNA species with exquisite detail (Lecomte...clinical-grade materials, and is not commonly performed for research-grade materials. Addgene is going...

...these types of experiments easier and faster to perform. Introduction to flow cytometry Flow cytometry ... path of a laser and the instrument collects information about the cell’s size, complexity and fluorescence...is captured by detectors and provides useful information about the cell. Light that continues in the same...is called forward scatter (FSC) and provides information about the relative size of the cell; larger cells...traveling is called side scatter (SSC) and provides information about the cell’s complexity. A cell with a high...antibodies to pass through the cell membrane. Formaldehyde fixation creates cross-links between lysine ...Sometimes, users will combine methods and fix with formaldehyde first to freeze everything in place followed...

... for accuracy and completeness. The information is then formatted and published as a report with a DOI...user-deposited data detailing how an antibody performed in an experiment.   Figure 1: The front page ...contains experimental data showing how the antibody performed in the submitted application, along with a brief... included in a publication, you'll find that information in the report as well.    Figure 3: An antibody... results of an immunocytochemistry experiment performed with the anti-Lhx6.1 antibody.    For a more detailed..., and a short description of how the antibody performed.  Figure 5: Results for the data report shown...

...activities (1). Researchers also discovered the modular format of some transcriptional activators: that the DNA...interactions. In later years, improvements to yeast transformation protocols also helped establish the yeast two-hybrid...  from Yu-Zhu Zhang’s lab) is an example of the former. In this system, histidine-auxotrophic host strains...applied to the bait in a single population (e.g. transforming both fusion plasmids, or mating two single haploid... haploid yeast fusion plasmid transformants into a diploid strain for screening), or arrayed on a 96 well... each well contains a defined prey fusion.  The former allows for screening greater numbers, but the latter...conducted and analysed with care to get reliable information. Although two-hybrid systems are a powerful tool...

...product is introduced into the cell by direct transformation. A given insert will typically contain both...selectable gene product for isolation of successful transformants. Addgene distributes several ready-to-use, modular...fluorescent tags in S. cerevisiae, looking at their performance in categories such as brightness, stability, ...associated with plasmid-based overexpression. Tim Formosa, at the University of Utah, has built a complete...from this collection will yield an insert with the format (protease site)-6xGly linker-(epitope tag)-ADH1...terminator-(selection marker). Additionally, Dr. Formosa has deposited six plasmids with a multiple cloning...modification in yeast developed by Dr. Pringle’s former lab at UNC Chapel Hill. Bähler et al.(2) describe...

...and drug development. Integrin structure and conformational complexity There are 24 known mammalian integrins...the cytoskeleton. Most integrins have three conformational states: bent-closed, extended-closed, and extended-open...further stabilizes the extended open integrin conformation. During embryonic development, extended-open...extracellular matrix. During immune responses, this same conformation encourages immune cell adhesion and migration...migration into inflamed tissues. Integrins' conformational flexibility is crucial for their function. With the...research reagents, researchers can measure this conformational change to investigate the role of specific ... Figure 1: Integrins can shape into three conformations: (A) bent-closed, (B) extended-closed, and (...

...Presented in figure 1). More information on Agrobacterium-mediated transformation can be found in this blog...modify several genomic loci at once (get more information on multiplexing gRNAs here). Cas9 is commonly...Simplified schematic of agrobacterium-mediated transformation in plant cells. Agrobacterium tumefaciens can...plant genome. B) The Ti plasmid and helper are transformed into agrobacterium tumefaciens and exposed to...methods do not involve double strand break (DSB) formation and do not require donor DNA, . These precise ...plant cytorhabdovirus as versatile expression platforms for planthopper and cereal genomic studies. New...Gelvin SB (2003) Agrobacterium-Mediated Plant Transformation: the Biology behind the “Gene-Jockeying” Tool...

...plates) (see box below). This initial transformation should be performed using a highly competent strain that...polymerase is a phage-derived polymerase that can perform whole genome amplification (by a mechanism known...certain modifications to DNA bases.  Ligate and transform your resultant plasmid libraries into chemically...chemically competent E. coli and analyze transformants for appropriately sized inserts. We consider a library...culture, dilute and plate the complete library of transformants for single colonies (this usually requires 10...extract plasmid DNA directly from the colonies. Transform the resultant plasmid DNA into E. coli BL21 (DE3... protein production), then dilute and plate transformants for isolated colonies (150-200 per plate) across...

...expression atlas, including over 3,500 human TF isoforms, to help researchers understand this regulatory...encodes approximately 1,800 TFs, with >3,500 unique isoforms transcribed from these sites. The Zhang lab generated...cultured following a differentiation protocol before performing single-cell RNA sequencing. The sequencing results...were differentiated and single cell RNA-seq was performed to map TFs to cell fates. (Adapted from Joung ...MORF to work Screens and selections In its current format, the MORF library is most immediately useful for...on cellular processes. For help with library transformation and amplification, refer to the Zhang lab’s...library to further investigate specific genes and TF isoforms. Due to the size of the collection, we’re releasing...

... them. That’s where our content - the useful information on scientific literature, technical skills, and...e-books – comes into play. Our goal is to provide informative content to help researchers in creating and sharing...spring of 2022. The first step was to understand information our guide needed to have. Through a series of...applications should be included and what basic information someone new to antibodies might need to successfully...primary literature search to collect up to date information on the scientific topic. If that’s not enough...from papers or image sharing repositories. Then we format, do a final review to catch those pesky typos, ...research community! We work to provide engaging and informative resources that answer questions our depositors...

...writers have been curious about the capability of transforming the genetic code of living organisms and its...that Streptococcus pneumoniae bacteria could be transformed from one organism to the other. This is now famed... myth that protein is the carrier of genetic information and led to the coronation of DNA as the molecule...scientists established that DNA encoded all the information necessary for regulating and propagating life...machinery, which can lead to high frequency of indel formation in the genome and are inefficient at introducing...Together, CBE and ABE have obviated the indel formation rates that are typically associated with the DSBs...advertisement of the technology on various non-scientific platforms, CRISPR has also transcended into the world of...

... to avoid contamination, take extra care when performing RNA extraction. RNA is inherently not as stable... protocol with guanidinium thiocyanate-phenol-chloroform. In this method, samples are still homogenized..., water-saturated phenol, sodium acetate, and chloroform are added to the homogenate and shaken. After...ultracentrifugation!), the layers of phenol and chloroform separate, and RNA is retained in the top, aqueous...centrifugation and the supernatant is extracted with chloroform as in the above no-kit method.  Researchers have...Isolation by Acid Guanidinium Thiocyanate–Phenol–Chloroform Extraction. Analytical Biochemistry 162:156–159...isolation by acid guanidinium thiocyanate–phenol–chloroform extraction: twenty-something years on. Nature...

...students first transform the S. cerevisiae met deletion strains and then isolate transformed strains on media...organism into overexpression plasmids. Students next transform deletion strains from the reference organisms ... (7). In our class research project, students transform S. cerevisiae met deletion strains with overexpression...expression of the plasmid-encoded MET gene allows the transformed strain to grow in the absence of methionine (... to select yeast that have been successfully transformed with the plasmids, because the S. cerevisiae ...of MET/Met genes from the plasmids allows the transformed strains to grow in the absence of methionine....

...broken down into four simple steps: Send plasmid information to Addgene Material Transfer Agreement (MTA) ..., we’ve made it easy to send us your plasmid information in a deposit spreadsheet. The data entry process...require that you send your samples to Addgene pre-transformed in this strain. Hazardous If the plasmid...finished filling out the spreadsheet, save it in the format: labname_addgene_batch_upload.xls Replace ‘labname...spreadsheet to [email protected] with the following information: Addgene account username. In order for the ...Yachie, 2021) but can accept sequence files in any format. Distribution status for your plasmids: Hold for...were first created. From there, we’ll use the information in the spreadsheet to generate plasmid pages....

...throughout the conference, what worked? Use this information to prepare for the next meeting. Navigating talks... work to a preprint server (and include this information on the poster) so your visitors can have a DOI...questions from your poster viewers and trade contact information if your conversation is particularly fruitful...’s best to turn to an established social media platform. During the conference If the conference has a...using social media for sharing new scientific information from the conference, many conferences also have...having business cards is a good way to share your information quickly. During the conference Arriving at the...scientific networking Learn how to set up and informational interview and Expand your professional network...

...Your DNA Learn to Do a Bacterial Transformation Learn How to Perform a Diagnostic Restriction Digest ...inverted terminal repeats. We use NEB Stable to transform and prep high quality DNA that contains these ...of your prep. Many plasmid prep kits recommend performing an extra wash step to remove endonucleases (see... in a protein expression strain, we suggest retransforming the plasmid into a strain meant for DNA purification...the binding matrix could clog the matrix when performing filter based plasmid prepping. Be sure to stay...plasmid feature should be indicated in the plasmid information or growth strain instructions from the manufacturer...

... not represent a formal stance taken by Addgene or its staff. Additional information about gene drives...tested in yeast5. Ecological confinement involves performing experiments in a geographic area where escaped...such as malaria and dengue are currently being performed in regions that don't have resident populations...should be used? There are ongoing efforts to develop formal guidelines to answer this question. Until then,...very few gene drive experiments that can't be performed with two or more confinement methods. Since molecular...developed safely and transparently.  For more information, visit www.sculptingevolution.org. References...

...adapted the DETECTR platform to detect SARS-CoV-2 using a lateral flow strip format. They published this... to develop simple, portable, and inexpensive platforms to reliably detect nucleic acids at the atomolar...point, they hope that the protocol serves as a platform for advancing diagnostics.     DETECTR- DNA...harnessed this ability to create a DNA detection platform called DETECTR. How does DETECTR work? DETECTR...technology with the mission to “provide a CRISPR-based platform on which an infinite number of tests” for biosensing...Multiplexed and portable nucleic acid detection platform with Cas13, Cas12a, and Csm6. Science 360:439–...

...builds on our former approach and involves reading primary literature, soliciting information from requestors...requestors or how it performed. Addgene launched our AAV Data Hub as a community platform for the sharing ...upload their experimental data in a standardized format, sharing how well a given viral vector worked —...selecting an AAV can help a researcher make a more informed choice on which AAV to request and/or save time...develop new systems, new partnerships, and new platforms, from our early engagement with UPenn to our launch...