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Showing: 181 - 210 of 506 results
  1. Building and Validating Recombinant Antibodies: A Case Study

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    Blog Post
    ...expression plasmids were DNA sequenced to determine the VH and VL sequence. These plasmids have been deposited...important collection.  Creating the Plasmids To begin constructing the plasmids for expression of mAbs, the Trimmer...scientific community with the plasmid sequences available from each plasmid webpage. Importantly, the methods...Resources on the Addgene blog:  Plasmid-Based Recombinant Antibodies  Plasmids 101: Secondary Nanobody Toolbox...NABOR are recombinant antibodies expressed from plasmids that have been deposited with Addgene. Here, we... first antibodies distributed by Addgene.  The plasmids used to generate these antibodies were based off... to create an amplicon that  was cloned into a plasmid backbone for expression of the mAb heavy and light...
  2. REPLACR Mutagenesis: Replacing In Vitro Recombination Methods

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    ...amplify the template plasmid. The parental, nonmutated DNA is digested with methylated DNA-specific enzyme ...recommended for plasmids up to 25 kb, most cloners should be fine, especially using plasmids in the 10-12...Other Plasmid Cloning Techniques like SLIC and Golden Gate Cloning Learn How to Verify Your Plasmid Read...Reference Pages Choose Your Perfect Plasmid Backbone Find Plasmids for Your Research ...made genomic SDM relatively straightforward, but plasmid-based SDM has lagged behind. While commercial kits... REPLACR (Recombineering of Ends of Linearized Plasmids After PCR). Current site directed mutagenesis...of background colonies carrying the unmodified plasmid. For insertions, it’s possible to use the same ...
  3. Tips for arabidopsis transformation

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    ....org Find plant plasmids Visit our plant resource page Deposit arabidopsis plasmids with Addgene ...pathogenic species that stably integrates transfer DNA (tDNA) into the genomes of the plants it attacks Growing...this method include: Cloning and transforming a plasmid into the bacterium Agrobacterium tumeficans - a...available (Weigel and Glazebrook, 2002). Find plant plasmid resources at Addgene  Choosing an expression system...options, but here are a couple of my favorites. Plasmids from the Tsuyoshi Nakagawa lab are binary gateway...prefer Golden Gate assembly, there are a series of plasmids from the Dinneny lab that additionally allow for...culture you are growing definitely contains your plasmid. Grow lots of Agrobacterium: The more agrobacterium...
  4. Synthetic Biology, Artificial Chromosomes, iGEM & More - Interview with Tom Ellis

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    ...biology as the engineering of biology at the level of DNA using modular, standardized, disciplined, and open...research as can already be seen with things like DNA synthesis, Golden Gate cloning, and CRISPR. The yeast...Synthetic Biology Education Nonprofit BioBuilder Plasmids 101: Golden Gate Cloning Learn About Working at...Michael Koeris Resources at Addgene.org Find Plasmids from the Ellis Lab Find Synthetic Biology Kits...
  5. Hot Plasmids - March 2019 - Anti-CRISPR, 2in1 Cloning, Fluorescent Voltage Indicators, and Photoswitchable Proteins

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    ...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... recent plasmid deposit please sign up here.          Listen to this episode of Hot Plasmids! Optogenetic...Agrobacterium-mediated DNA transfer, each GOI is usually expressed from a different plasmid, which may lead ...Grefen and Blatt, 2012). The 2in1 Plasmid Toolkit consists of 4 plasmid toolkits generated with 4 different...deposited the resulting optogenetic plasmid tools which includes plasmids encoding a fusion between cPYP and...CRISPR complexes were observed binding telomeric DNA. What’s great about CASANOVA? It works with the S...
  6. Viral Vectors 101: Viral Vector Elements

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    Blog Post
    ...lentiviral plasmids Addgene's most popular retroviral plasmids Addgene's collection of AAV plasmids Addgene...split across several plasmids (often three), for safety purposes. The primary plasmid with the delivered...often a gene) is called the transfer plasmid while the other plasmids with packaging or replication components...of adenovirus plasmids Resources on the Addgene blog Parts of the AAV packaging plasmid Overview of Lentiviral...This is often cDNA, shRNA, or something similar, and is contained on the transfer plasmid. If expression...will all be ssDNA within the viral particle. The ITRs base pair with each other to allow DNA synthesis ... the dsDNA virus. Viral packaging and entry Adenovirus is quite large and has more helper plasmid components...
  7. CRISPR 101: Targeting Non-Coding RNAs with CRISPR/Cas9

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    ... Fonfara I, Hauer M, Doudna JA, Charpentier E. A Programmable Dual-RNA–Guided DNA Endonuclease in Adaptive...genes by generating insertions or deletions in the DNA sequence. This same approach is effective to target...because very small deletions and insertions in the DNA sequence can completely disrupt expression of the... gRNAs can be used to target specific sizes of a DNA fragment and turn off the function by removing the...affect nearby genes (Figure 1A-C). Find CRISPR plasmids at Addgene! Knock-in: Introducing tags or stop... Once Cas9 generates double-strand breaks, a new DNA sequence can be knocked-in, or introduced, into the...ncRNA expression without permanently altering the DNA, CRISPR interference (CRISPRi) and CRISPR activation...
  8. History of CRISPR Cas - A tale of survival and evolution

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    Blog Post
    ...thermophilus to predatory phages to test if the exogenous DNA would be incorporated into the bacterial genome. ...specifically, specialized Cas proteins snip the foreign DNA into small fragments approximately 30bp in length...Once the CRISPR/Cas complex binds to the foreign DNA, a cut is made to destroy the invader. Wikipedia... in the field, and enabling access to multiple plasmids used for various platform applications. For more... out Addgene’s CRISPR Guide or find CRISPR/Cas plasmids for your research. Do you have a cool idea or ...
  9. Plasmids for Endogenous Gene Tagging in Human Cells

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    Blog Post
    ...Designing the donor plasmid Figure 2: Donor plasmid design strategy. A donor plasmid contains 1 kb homology...methodology is the use of a donor plasmid that contains long stretches of DNA on either side of the fluorescent...1kb of homologous DNA flanking both sides (about 2.7kb total)—is inserted into a plasmid backbone for delivery...found within the homology areas of the plasmid to prevent the plasmid from being cut and destroyed by CRISPR... the tag. Created with BioRender.com. Plasmids, plasmids everywhere To find out more about gene edited...expensive for many labs. We’ve created and tested plasmids that use CRISPR/Cas9 to endogenously tag a wide...wide variety of genes with GFP. These plasmids are available through Addgene, and the stem cell lines we...
  10. New CRISPR Tools: Cas7-11 and PASTE

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    ... that could cut RNA or DNA via a CRISPR mechanism. The weird black pellet's DNA yielded a new CRISPR effector...say the sample had their attention! They isolated DNA from the sample, amplified the CRISPR locus from ...discovery The first generation of CRISPR could cut DNA, the second generation could do base editing, and...PASTE, which can “drag and drop” kilobases’ worth of DNA with CRISPR-driven precision into a genome, can be...integrase would then integrate into with a large DNA insert – or Programmable Addition via Site-specific...take a genetic sequence and integrate it into any DNA sequence containing the 38-50 bp sequence recognized...Use PASTE can be delivered via a single dose of plasmids, works in non-dividing and primary cells, and ...
  11. Protein Tagging with CRISPR/Cas9: A Conversation with Mendenhall and Myers

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    ...of the second plasmid can be done in one day in one assembly reaction. This second plasmid saves you a ...alerts when plasmids become available.  We’ve also had some requests for variations on the plasmids we’ve developed...and Myers for speaking with us! Find the Plasmids: Plasmids for protein tagging with CRISPR Additional...goal for years as members of the ENCyclopedia of DNA Elements Project (ENCODE), an NIH-funded effort to... available at Addgene. For more details on the plasmids that are currently available along with detailed...system, what we are doing is adding in a second plasmid to target an epitope tag onto the transcription...second vector is a homology directed repair donor plasmid with homology arms and a selection marker. If things...
  12. Quickest Way to Deposit Plasmids: The Deposit Spreadsheet

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    Blog Post
    ...deposits with more than 10 plasmids is to use our deposit spreadsheet?  Our plasmid deposit process can be... Send plasmid information to Addgene Material Transfer Agreement (MTA) approval  Send plasmids to Addgene...instructions on how to send liquid DNA or bacterial streaks of your plasmids back to us. Our scientists will...spreadsheet and copy and paste your plasmid data directly into our file, one plasmid per row, as outlined by the... Data Field Description Plasmid Name Use a descriptive plasmid name and match the name as it ...application of the plasmid and will help a scientist outside your field understand if this plasmid will work for...possible, we propagate plasmids in the standard cloning strain DH5α. For plasmids with highly repetitive...
  13. Hot Plasmids - December 2019 - CRISPR pooled library, LipoGlo, CRISPRa, and Voltage Imaging Tools

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    ...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...need. If you'd ever like to write about a recent plasmid deposit please sign up here.        A retroviral...transducing a only a single gRNA per cell. The viral DNA containing the gRNA then integrates into the genome...identified by next-generation sequencing of the genomic DNA. However, some cell types are poorly transduced by...treatment of cardiovascular disease. Find the LipoGlo plasmids at Addgene! Lawler et al, QJM: An International...promoter systems. Find these CRISPR activation plasmids at Addgene. Liu et al., Nature Communications,...
  14. Plasmids 101: Modular Cloning Applications and Kits

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    ...connectors, cDNAs, and more to find the perfect combination. The EcoFlex Kit has a wide array of DNA parts ...Modular cloning is a popular DNA assembly tool used to build single- and multi-gene constructs for a ...background MoClo is a clever way to assemble several DNA parts in a specific orientation using Type IIS restriction...between CRISPR components expressed from different plasmid backbones. They noted that backbone differences... as the order, or distance in the placement of plasmid elements can impact expression levels and consequently...system was used to assess how different lentiviral plasmid backbone elements impact viral titer and to compare...plants, and animals (Chiasson et al., 2019). Many plasmid elements such as promoters or fluorophores are ...
  15. Hot Plasmids April 2018 - Protein Degradation, Nanoscopy, FIRE-Cas9, and Yeast Expression Tools

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    ...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... our hot plasmid articles from April 2018. If you'd ever like to write about a recent plasmid deposit ...sign up here. No time to read? Listen to our Hot Plasmids Podcast! TRIM-Away: Targeted endogenous protein...segment CRISPR and RNAi have helped researchers alter DNA sequence and RNA expression - but what if you just...your protein knockdown experiments! The TRIM-Away plasmids can be found here. Clift et al. Cell. 2017. PubMed...Endosomal pH Sensors podcast segment The first Addgene plasmid deposit from Professor Stefan Hell, who won the...
  16. How to Deposit Your Plasmids with Addgene

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    Blog Post
    ...Unpublished or pre-publication plasmids": Unpublished plasmids or plasmids that will not be published are...and entering a plasmid name,plasmid type, and plasmid description/experimental purpose (right). On the...with your plasmids, and adding all the plasmids at once increases the likelihood that the plasmids are given...liquid DNA with all of the plasmids in the library in a single tube. The number of unique plasmids in a ...easy for you to share plasmids. To achieve this goal, we will archive any plasmids you've deposited with...Spreadsheet". Start your plasmid deposit There are two options to begin your plasmid deposit. Figure 2: Choose... Choose to submit plasmid(s) online or by using a spreadsheet. The plasmid information can be entered ...
  17. Plasmids 101: How to Name Your Plasmid in 3 Easy Steps

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    ...letter of a plasmid name and simply denotes that the object is a ‘plasmid’. “p” is for plasmid. pXXXXX-XXXX...insert in your plasmid name. This is often a 3-6 letter representation of the gene (or DNA sequence). pBACKBONE-hGene...information about plasmid features and tips you can use in the lab, check out more posts in our Plasmids 101 series...There are no universal rules for naming plasmids but here are some good guidelines to follow in order...people can quickly and easily identify what your plasmid contains and other important information. Tip:...Backbone name Include the empty backbone name in your plasmid name. This simple piece of information can often...important details. Once you know the backbone a plasmid is based on, you can usually derive: a) the bacterial...
  18. Editor's Choice, August 2016

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    ...can use PCR to make small sequence changes to plasmid DNA. This an oldie but a goodie, and in my personal...that describe methods to make single base edits in DNA. The first, contributed by guest blogger Kristian...experience, is a quick way to generate many mutated plasmid constructs. The second post was contributed by ...
  19. Hot Plasmids and Viral Preps - January 2021

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    ...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...highlights from recent CRISPR plasmids. To find all of the CRISPR plasmids available from Addgene, head...AAV-deliverable ABE.  Find the plasmid here Jesse Zalatan’s lab deposited plasmids for a chemically inducible...need. If you'd ever like to write about a recent plasmid deposit please sign up here.  Here's what you'll...mGold, a new yellow fluorescent protein New CRISPR plasmids New items from the viral service A fast blue-light...recognize, cut, and alter specific target sequences in DNA resulting in a variety of outcomes including excision...
  20. PCR Applications for Copy Number Variation Assays

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    ...- that is, since you’re looking at the amount of DNA in your sample relative to your normal control - ...dye that works by binding to all double-stranded DNA, while Taqman uses an intercalating dye, with a fluorescent...The fluorescent signal can be affected by AT-rich DNA and the length of the amplicon and it has a higher...In both applications, results can be affected by DNA quality and primer design, particularly for amplicons...statistics), and the readout gives an absolute value of DNA concentration. By comparing the number of positive... number using SYBR Green: confounding by AT-rich DNA and by variation in amplicon length. Am J Trop Med... RJ, Paterson ES, Smith ML. The copy-number of plasmids and other genetic elements can be determined by...
  21. Plasmid-based Recombinant Monoclonal Antibodies: What They Are and Why You Should Be Excited About Them

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    ...interest has been cloned into an expression plasmid, the plasmid can be introduced into host cells, such ...that the plasmids and sequences for antibodies are not shared. For instance, through open plasmid sharing...institutions have proposed a shift to recombinant DNA-based antibody technologies (Bradbury & Plückthun...Recombinant monoclonal antibodies are encoded in plasmids and produce a single antibody recognizing one ...synthetic genes that are typically expressed from a plasmid or from an integrated sequence in a stable cell...heavy chain genes of the antibody are encoded in a plasmid. (Right) An assembled antibody protein binds an...antibody can be converted into recombinant form through DNA sequencing of the line and subsequent cloning of ...
  22. Hot Plasmids - August 2020

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    ...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...They generated plasmids tagged with EB3 to mark the growing tips of microtubuli and plasmids tagged with ...and dCas9-VPR targeting plasmids can be found at Addgene. Check out these plasmids for piggyBac gRNA delivery...highlights from recent CRISPR plasmids. To find all of the CRISPR plasmids available from Addgene, head... Find the plasmids at Addgene The MoClo CRISPR/Cas Toolkit for plants includes 95 plasmids consisting...need. If you'd ever like to write about a recent plasmid deposit please sign up here.  Here's what you'll...
  23. Cre-ating New Methods for Site-specific Recombination in Drosophila

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    ....1111704108. Epub 2011 Aug 9. PubMed. Find the Plasmids @Addgene: Plasmids for KD, R, B2, and B3 recombinases from...frequency of 1.2 per megabase in mammals), leading to DNA damage and developmental aberrations. In multiple...10.1038/ni0707-665. PubMed. Growth inhibition and DNA damage induced by Cre recombinase in mammalian cells...
  24. AAV Titers: Where Do They Come From And What Do They Mean?

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    ...ddPCR) Historically, a quantitative DNA hybridization method (DNA dot blotting) had been used to titrate... as opposed to purified DNA. This may be mitigated by using purified viral DNA as the template instead...the category: ELISA...qPCR...Digital droplet PCR...DNA dot blot...Transduction assay...SDS-PAGE...Electron...concentration of viral genomes (by qPCR or other DNA quantification methods - see below), since each viral...concentration. We regularly make and validate fresh plasmid standards. We validate our absolute quantification... digital PCR system for absolute quantitation of DNA copy number." Analytical chemistry 83.22 (2011): ...
  25. Human Germline Editing Using CRISPR

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    ...skin, blood and semen samples. Ma et al. designed plasmids containing Cas9 and two different gRNAs, and electroporated...oocytes, thus allowing repair to take place before DNA replication. Indeed, they observed that 41/42 embryos...editing.’ While repair using endogenous chromosomal DNA is appealing for heterozygous mutations, it will ... homozygous mutations. Moreover, introducing new DNA seems impossible with current tools, thus quieting...CRISPR Resources on Addgene.org Browse All CRISPR Plasmids Check Out Our CRISPR Guide Pages ...
  26. 3D Printing Meets CRISPR Cas9

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    ... its reported cleavage site on the complementary DNA strand. And this is why we love working with researchers... have in order to scan along the double-stranded DNA, recognize a PAM sequence, allow the complementary...base pairing between the guide RNA and the target DNA strand, and then activate two different endonuclease...This structure captures the displaced non-target DNA strand and shows the HNH nuclease domain swung around...juxtaposition to its cleavage site on the target DNA strand. In addition, this model also displays the...Guide Page CRISPR/Cas9 History Browse All CRISPR Plasmids and Resources ... technology to 4th graders, check out Jennifer Doudna’s new book A Crack in Creation. Making models more...
  27. Plasmid Grant to Aid Cervical Cancer Screening in Ghana

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    ... Addgene/Seeding Labs plasmid grant and plans to use the grant to order plasmids she can use as positive...similar grants back in June, Gladys will be using plasmids in creative ways that we wouldn’t necessarily ...commonly used in Ghana, there is little screening for DNA markers like the presence of high risk (HR) Human...HR HPV types, predominantly HPV 16 and 18.” HPV plasmids as positive controls To start her work, Gladys...cytological tests currently in use. Gladys will use plasmids containing a variety of HPV genes as positive ...incredibly happy to hear that Gladys will be using plasmids in a way that can potentially have a direct impact...awardees We will be opening the Addgene/Seeding Labs Plasmid Grant to a third round of applicants at the start...
  28. 5 Science Rap Videos & Their Creator: Tom McFadden

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    ...the bay area to create a plasmid rap video for us (If you’re new to plasmids, we highly recommend checking...about colony collapse disorder.     5. Plasmid Rap Plasmid rap video made with support from Addgene....incredibly important role in solving the structure of DNA. 2. The Immortal Rap of Henrietta Lacks Students...Podcasts Find Great Educational Content in our Plasmids 101 Series Additional Resources on Addgene.org...
  29. Advancing Biology with Zebrafish: Genetic Tools for Developmental Studies and More

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    ...Read our plasmids 101 blog series Resources on Addgene.org Browse our zebrafish CRISPR plasmid collection...Creating transgenic organisms by introducing foreign DNA into the genome is useful for a variety of applications...transposon called Tol2 to randomly integrate foreign DNA into the genome. Non-random integration into specific...facile CRISPR/Cas9-mediated insertion of foreign DNA. Despite these caveats, several features of zebrafish—including...collection Read our molecular biology reference Find plasmids for your research ...
  30. Antibodies 101: Isotypes

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    ...Isotype switching is caused by a specialized type of DNA recombination. Heavy chain constant genes are clustered... expressing a different isotype, the intervening DNA sequence is deleted, which places the variable region...    Figure 2: Isotype switching requires DNA recombination of the antibody gene locus. B cells...in the heavy-chain constant domain gene cluster. DNA recombination can delete intervening heavy-chain ...Resources on Addgene.org Browse Addgene’s Antibodies plasmid collection ...
Showing: 181 - 210 of 506 results