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  1. Hot Plasmids and Viral Preps - September 2021

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    Blog Post
    ...subset of the new plasmids and viral preps in the repository through our hot plasmids articles. These articles...recent plasmid deposits and we hope they'll make it easier for you to find and use the plasmids you need... CRISPR plasmids are always being added to the repository. To find all of the CRISPR plasmids available... Xiao Wang Lab has recently deposited a set of plasmids that helps identify base edited cell populations...populations without end-point sequencing assays. These plasmids use “Cas9-mediated adenosine transient reporter...available from Addgene, head over to our CRISPR Plasmids and Resources page. Here are some highlights from the...gene. The lab modified the lentiviral backbone to encode the CD90.1 selection marker, Thy1.1, in addition...
  2. CRISPR Between the Genes: How to Experiment with Enhancers and Epigenomics

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    Blog Post
    ...experiment. We’ll start with ChIP-seq data from the ENCODE project, find enhancers in embryonic stem cells...sites from 125 different human cell types from the ENCODE Project. DHS sites are the most inclusive markers...Genome Edit Resources on Addgene.org Find CRISPR Plasmids for Your Research Check out Our CRISPR Guide Find...CRISPR screen to disrupt these enhancers. The third and final step is to conduct our CRISPR screen. We start... the marvel of DNA compaction, an enhancer can increase the expression of a gene that is millions of base...cells, and conclude with a targeted CRISPR screen that can disrupt these enhancers. A real-world experiment...that have NANOG binding sites 2. Design a CRISPR screen to target and disrupt the NANOG enhancers 3. CRISPR...
  3. Plasmids 101: Optimizing Plasmid Yields

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    Blog Post
    ...more cells = more plasmid. Plasmids can vary in copy number, the number of plasmid copies supported within... optimize your plasmid prep We'll discuss the following techniques to increase plasmid yield. Keep in ...may lead to loss of the plasmid, and using older plates could increase plasmid loss or mutation. Let it...where your plasmid yield is sub-optimal? If you are consistently getting sub-optimal plasmid yields from...genotype, as these mutations improve plasmid stability and yield. If a plasmid is prone to recombination Use ... a strain optimized for plasmids with repeat elements, such as viral plasmids with inverted terminal repeats...been engineered to reduce plasmid recombination, but are also endA+. endA encodes a thermostable periplasmic...
  4. Six Spooky Science Stories and Halloween at Addgene

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    Blog Post
    ...Plasmid pumpkins, team costumes, and spooky science stories. Yes, please! At Addgene, we love finding... contest trophy. We’ve had teams dressed up as plasmids, Blugene, and the Addgene ping pong table. This... 813-816. Gilbert, Lawrence I. "Halloween genes encode P450 enzymes that mediate steroid hormone biosynthesis... appearance there too) and shared fascinatingly creepy science stories. Here are some of our favorite ...
  5. Building and Validating Recombinant Antibodies: A Case Study

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    Blog Post
    ...used to create this important collection.  Creating the Plasmids To begin constructing the plasmids for ...expression plasmids were DNA sequenced to determine the VH and VL sequence. These plasmids have been deposited...scientific community with the plasmid sequences available from each plasmid webpage. Importantly, the methods...found that they could modify the CH encoding sequence within the plasmid backbone to generate R-mAbs of different...Resources on the Addgene blog:  Plasmid-Based Recombinant Antibodies  Plasmids 101: Secondary Nanobody Toolbox...Fusion PCR was performed to create an amplicon that  was cloned into a plasmid backbone for expression of...cells transfected with a plasmid to express the target antigen could be screened in a high-throughput manner...
  6. Antibodies 101: Single Chain Fragment Variables (scFvs)

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    Blog Post
    ...insect cells, they are most often expressed from a plasmid in bacteria (Ahmed et al., 2012). One challenge... the selected scFvs are inserted into a vector encoding the antibody constant domain scaffold to convert...and cheaper to generate since it’s genetically encoded.   Translational applications of scFvs: Just ...Resources on Addgene.org: Browse Addgene’s Antibody Plasmid Collection Find antibodies for neuroscience research... rounds of screening. Created with Biorender.com.   Some phage display libraries screen antibody genes...serine with dispersed hydrophilic residues for increased solubility (Monnier et al., 2013). The linker ...expression systems. scFvs are also small enough to be screened for with in vitro display methods such as phage...
  7. New Norepinephrine Indicators: nLightG and nLightR

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    Blog Post
    ...Resources on Addgene.org Find Biosensor Plasmids Find Optogenetics Plasmids Visit the Fluorescent Protein Guide...accounted for in your experimental design. Find nLight plasmids here! Next steps While nLightG and nLightR greatly...Lin, D., Du, J., & Li, Y. (2019). A Genetically Encoded Fluorescent Sensor for Rapid and Specific In Vivo... to GRABNE, and having both colors allows for increased options for multiplexing in experiments, including...both nLightG and nLightR showing significantly increased selectivity for norepinephrine over dopamine. ...
  8. Rewiring Metabolic Circuitry with CRISPR RNA Scaffolds [Video]

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    Blog Post
    ...), 339-350 (2015). PubMed. Find the Plasmids @Addgene: Plasmids for CRISPRi are described here: http...constructs to be introduced simultaneously in a single plasmid. The functionality of the RNA scaffolds follows...differentially alter the levels of five genes that encode biosynthetic enzymes for violacein, a distinctive...http://www.addgene.org/crispr/qi/ Plasmids described in  Zalatan et al. Cell  (2015) can be found here...https://www.addgene.org/browse/article/9593/ Plasmids described in Qi et al. Cell  (2013) can be found...Programs with CRISPR RNA Scaffolds." Adam has also created a video to help scientists visualize the concepts...
  9. 15 Years of Addgene: The Top 15 Plasmids

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    Blog Post
    ...and an envelope expressing plasmid, such as our second most requested plasmid of all time, pMD2.G. Find...wide range of applications. This plasmid was the top requested plasmid of 2017. Find pMD2.G. pSpCas9(BB... top requested plasmid from 2016. You may notice the “V2.0” at the end of this plasmid which indicates...prior version of this plasmid. Indeed the first version is the 15th most popular plasmid of all time, but ...envelope expressing plasmid pMD2.G. Find pMDLg/pRPE. scramble shRNA - This plasmid from David Sabatini....1 protocol. Pro-tip: this plasmid grows more slowly than standard plasmids. Find pLKO.1 - TRC cloning...vector encodes both SpCas9 and your gRNA. It’s the former version of our sixth most popular plasmid pSpCas9...
  10. Plasmids 101: Methylation and Restriction Enzymes

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    Blog Post
    ...desired mutation into your plasmid of interest by PCR generates mutated plasmids with no methylation (there...Mutagenesis to Mutate Your Plasmids Resources on Addgene.org Check Out Our Plasmid Protocols Boost Your Molecular... for purposes other than cloning or confirming plasmids. It turns out that restriction enzymes are one...endonucleases. A given prokaryote typically has genes encoding one or a few restriction modification systems ...difficult to interpret or lead you to conclude your plasmid is not correct! Conversely, enzymes such as DpnI...methyltransferases in the PCR reaction). The template plasmid, on the other hand, should be derived from a dam...methylated adenines in any GATC sequences found in the plasmid. When the PCR products are digested with DpnI, ...
Showing: 91 - 100 of 225 results