Skip to main content
Addgene
Showing: 81 - 100 of 176 results
  1. Using Ultrasound to Image Bacteria in vivo: Acoustic Reporter Genes

    Type
    Blog Post
    Published
    June 19, 2018, 1:38 p.m.
    ...Addgene.org Find plasmids for in vivo imaging with fluorescent proteins Browse luciferase plasmids Find fluorescent... Genes (ARGs) are engineered gene clusters that encode proteins that form bacterial gas vesicles. These...acoustic reporters for your research? arg1 and arg2 plasmids are available from Addgene! References 1 Bourdeau...operons from two different bacteria, Bourdeau et al created two constructs optimized for expression in E. coli... and have already developed a high-throughput screening method for serial acoustic collapse to aid in ...
  2. Donations from Addgene to Yield Answers for Rare Disease Researchers

    Type
    Blog Post
    Published
    Sept. 15, 2015, 2:30 p.m.
    ...studying four of those rare diseases will receive plasmids from Addgene worth a total of $5000.  Lowe Syndrome...involving the primary cilia. They’ll put a variety of plasmids to work to explore the effect of various OCRL1...there. This will help us acquire a lot of those plasmids so that we can try many different things in parallel..., will use GFP-ATP1A3, FLAG-ATP1A3, and ATP1B3 plasmids to explore the functional differences among mutations...responsible for the disease as ATP1A3. The gene encodes a sodium-potassium pump expressed specifically ...mutations. More specifically, they’ve proposed to use plasmids with modified nickase Cas9 protein in order to...This recessive genetic condition leaves patients incredibly sensitive to sunlight and prone to developing...
  3. Natural or synthetic? How Addgene’s dataset reveals trends in biological innovation

    Type
    Blog Post
    Published
    Nov. 8, 2018, 3:47 p.m.
    ...synthetic biology page Search for a plasmid Find Addgene's most popular plasmids ...been coming to the Addgene website in search of plasmids. Now, scientists are beginning to see Addgene ...Addgene as a large data set. Addgene has over 65,000 plasmids in the repository, each verified by sequencing...preferences for the codons they use; even if two species encode the same protein, their gene sequence may have ... recently published a tool (trained on Addgene plasmid datasets) to predict the lab-of-origin of engineered...series of simulations and machine learning, they created a classifier that predicts whether a gene was natural...
  4. Hot Plasmids and Viral Preps - September 2021

    Type
    Blog Post
    Published
    Sept. 21, 2021, 1:15 p.m.
    ...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...
  5. CRISPR Between the Genes: How to Experiment with Enhancers and Epigenomics

    Type
    Blog Post
    Published
    Aug. 9, 2016, 2:30 p.m.
    ...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...
  6. Plasmids 101: Optimizing Plasmid Yields

    Type
    Blog Post
    Published
    May 26, 2016, 2:30 p.m.
    ...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...
  7. Six Spooky Science Stories and Halloween at Addgene

    Type
    Blog Post
    Published
    Oct. 31, 2019, 1:06 p.m.
    ...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 ...
  8. Building and Validating Recombinant Antibodies: A Case Study

    Type
    Blog Post
    Published
    April 5, 2022, 1:20 p.m.
    ...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...
  9. Antibodies 101: Single Chain Fragment Variables (scFvs)

    Type
    Blog Post
    Published
    June 3, 2021, 1:15 p.m.
    ...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...
  10. New Norepinephrine Indicators: nLightG and nLightR

    Type
    Blog Post
    Published
    Dec. 12, 2023, 2:15 p.m.
    ...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. ...
  11. Rewiring Metabolic Circuitry with CRISPR RNA Scaffolds [Video]

    Type
    Blog Post
    Published
    April 7, 2015, 4:21 p.m.
    ...), 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...
  12. 15 Years of Addgene: The Top 15 Plasmids

    Type
    Blog Post
    Published
    Jan. 8, 2019, 1:54 p.m.
    ...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...
  13. Plasmids 101: Methylation and Restriction Enzymes

    Type
    Blog Post
    Published
    June 30, 2016, 2:30 p.m.
    ...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, ...
  14. Plasmids 101: Control Plasmids

    Type
    Blog Post
    Published
    April 9, 2015, 3:29 p.m.
    ... used for plasmid-based experiments. What are control plasmids? Generally, control plasmids help to ensure...follow an example of a plasmid-based experiment, delineate its requisite control plasmids, and discuss why ...above are from a single experiment wherein Plasmid A (encoding shRNA against human Gene X in backbone Y)...proper control plasmids would address and answer these questions. Types of control plasmids Part of planning...conditions and plasmids should produce a null effect (i.e., no phenomenon is observed). In any plasmid-based experiment... in Plasmid A is the decreased expression of Gene X. Ergo the positive control(s) should decrease the ... and not some other unintended factor. Control plasmids are used to minimize any effects of the non-independent...
  15. 15 Hot Plasmids from 2017

    Type
    Blog Post
    Published
    Jan. 9, 2018, 3:02 p.m.
    ...highlight a subset of the new plasmids in the repository through our hot plasmids articles. These brief articles...articles provide a synopsis of a plasmid or group of plasmids' functions and applications. We hope that... you to find and use the plasmids you need. You can find all the hot plasmids from 2017 below. With over...over 50,000 plasmids, we can't write posts for every great plasmid that comes into the repository, but...write about your plasmids in a future blog post. No time to read? Listen to our hot plasmids segment on the... transcriptional activation and Cre recombination. Find PhoCl plasmids at Addgene. Zhang W, et al. Nature...editing for precise genome modification. Plasmid ID Plasmid Name Cas9 Variant Speacial Features 85169...
  16. Antibodies 101: Chimeric Antibodies

    Type
    Blog Post
    Published
    April 25, 2023, 1:15 p.m.
    ...been cloned into plasmids. Because their sequences are known and encoded on a plasmid, they can be easily...antibodies. Recombinant antibodies are plasmid-based and are created synthetically or derived from hybridoma...regions of a specific antibody are cloned into a plasmid backbone containing all constant regions, just ...antibodies against the new Fc region. In addition to increasing multiplexing capabilities this process is frequently...Although isotype conversion is routinely used to increase the utility of recombinant antibody tools, the...
  17. Hot Plasmids - February 2022

    Type
    Blog Post
    Published
    Feb. 22, 2022, 2:15 p.m.
    ...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...need. If you'd ever like to write about a recent plasmid deposit please sign up here.  Here's what you'...of Cas 9 vs. Cas 12a expression cassettes when encoding multiple guides. While two guides require two ...Ladder  by: Rachel Leeson This simple, inexpensive plasmid-based ladder system is a cost-effective alternative... ladders. Image from Santilli, et al. 2021 Plasmids are used to express 10, 15, 20, 30, 40, 50, 60...kD proteins or 20, 40, 60, and 80 kD proteins. Plasmids containing 150 or 250 kD proteins are also available...
  18. Plasmids 101: Transformation, Transduction, Bacterial Conjugation, and Transfection

    Type
    Blog Post
    Published
    June 25, 2019, 12:54 p.m.
    ... the plasmid can give them different phenotypes. For example, this plasmid encodes a green fluorescent...don't exactly "eat" plasmids as depicted in this comic, when a bacterium uptakes a plasmid, the genes on the... Read all of our Plasmids 101 blog posts Check out all of our blog posts on plasmid cloning Resources...comes from adjacent lysed bacteria and can include plasmid DNA or fragmented DNA released into the environment...membrane so the bacteria can easily uptake your plasmid of interest. Scientists can also use electroporation...exist as transient extrachromosomal DNA, like a plasmid, or it can integrate into the host bacterium’s ...cloning vector that contains both bacteriophage and plasmid properties. The phagemids are packaged into replication-incompetent...
  19. Hot Plasmids December 2018 - C. elegans RNAi, TurboID, Detecting Viral Outbreaks, and Protein Binding Specificity Tools

    Type
    Blog Post
    Published
    Dec. 6, 2018, 1:34 p.m.
    ...highlight a subset of the new plasmids 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...write about a recent plasmid deposit please sign up here.  Listen to the hot plasmids episode! New, highly...hundred SH3 domain containing plasmids available through Addgene. These plasmids can be used to carry out ...into the dsRNA leading to increased RNAi efficiency. Find the T444T plasmid here! Strum A, et al. Nucleic...dsRNA necessary for RNAi. The Vellai lab’s new plasmid, T444T, contains T7 terminators adjacent to the... Drosophila and C. elegans.   Find the TurboID plasmids here! Branon et al. Nat Biotechnol. 2018 PubMed...
  20. Tips for Screening with Yeast Two Hybrid Systems

    Type
    Blog Post
    Published
    Oct. 22, 2015, 2:30 p.m.
    ...transforming both fusion plasmids, or mating two single haploid yeast fusion plasmid transformants into a ...system (also called the interaction trap), genes encoding proteins of interest(POI’s) are fused to TAs and...reporter system (e.g. the Gateway-compatible bait Y2H plasmid pEZY202  from Yu-Zhu Zhang’s lab) is an example...Yeast Expression Vectors Find Bacterial Two Hybrid Plasmids Read our Blog Post About Yeast Vectors Read our...advantage of these discoveries to create a new system for screening protein-protein interactions. In later...identifying prey proteins after screening. It is also possible to screen libraries of bait and prey against...single-pass two-hybrid screening (6). See the Tips section for more on how to increase your rate of interactions...
Showing: 81 - 100 of 176 results