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Showing: 811 - 840 of 1104 results
  1. Degrading DNA with Cascade-Cas3

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    Blog Post
    ...powerful than it is. The nuclease domain of Cas3 is considered weak, especially compared to the power of Cas9...Repetitive DNA reeling by the Cascade-Cas3 complex in nucleotide unwinding steps. Molecular Cell, 70(3), 385-394...Liao, M., & Ke, A. (2018). Structure basis for RNA-guided DNA degradation by Cascade and Cas3. Science, 361...CRISPR-Transposons Additional resources on Addgene.org CRISPR guide Cascade-Cas3 Plasmid collection ...
  2. Viral Vectors 101: Producing Your rAAV

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    Blog Post
    ...There are several facilities nationwide where you can obtain excellent quality, high titer rAAV (including...certain in vitro and in vivo applications, you can consider using unpurified AAV from the supernatant (Goodwin... in precision and variability, qPCR is the more widely used method due to the accessibility of instruments...101 series!  This post was originally written by Didem Goz Ayturk and updated by Ina Ersing in August 2023...
  3. 3D Printing Meets CRISPR Cas9

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    Blog Post
    ...crystallographer working with Jane Richardson, provided an initial solution to this problem with the development...the surface of the protein where the nascent polypeptide emerges from the exit channel.   He then said...allow the complementary base pairing between the guide RNA and the target DNA strand, and then activate...User Resources on Addgene.org Visit Our CRISPR Guide Page CRISPR/Cas9 History Browse All CRISPR Plasmids...
  4. Tips for a 1st time AAV user (by a Rookie AAV user)

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    Blog Post
    ...plasmids to produce AAV: 1) the RepCap plasmid which provides the AAV replication (rep) and capsid (cap) genes...primarily found in the culture media, you should consider performing PEG precipitation. Instead of sonicating... details. Pro tips Watch this AAV purification video! It didn’t exist when I did my first iodixanol gradient... gradient purification, but I wish it had. The video gives a brief overview of how iodixanol purifications...
  5. Interview: Nicola Patron on Plant Synthetic Biology, MoClo, and More

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    Blog Post
    ...wanted to expand the toolkit. We have included a wider range of terminators than are commonly used as we...rusts and we are collecting sequences that will provide a similar resource for those involved in monocot... really and we’ll be producing an instructional video soon to make it easier for people to use the Golden...think plant biology is massively underfunded considering how important it is. I would really like to reach...
  6. Drew Endy Introduces the Biobrick Public Agreement Plasmid Collection

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    Blog Post
    ...DNA systems capable of storing data and computing inside living cells. He's also a co-founder of the BioBricks...Champion of Change, a program created as part of President Barack Obama's Winning the Future Initiative. ...proteins. That's central to everything that goes on inside a cell. Until we get a handle on precise, forward...promise that we could instead have things like peptide or RNA aptamers that act as genetically encoded...
  7. Capturing a Moment with Marc Zimmer’s “The State of Science”

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    Blog Post
    ...inclusion of some interesting case studies, and Zimmer provides several. In Part Three of the book, called simply... and her essential-but-unlauded role in the identification of DNA’s double helix. Perhaps to the dismay...dismay of middle-aged scientists, the identification of Green Fluorescent Protein (GFP) and its development...(for funding, etc.) with that produced by the confident and flamboyant Watsons.” In Part Four, “New Science...
  8. Getting to Know Expansion Microscopy

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    Blog Post
    ...Microscopy. What is Expansion Microscopy?  ExM provides a straightforward answer to the space problem....minimized through tweaks to these steps. But even under ideal polymerization and digestion conditions, loss of...Bournonville L, et al (2021) Expansion microscopy provides new insights into the cytoskeleton of malaria ...Sommer C, Rizzoli SO, Danzl JG (2019) A practical guide to optimization in X10 expansion microscopy. Nat...
  9. CRISPR Antimicrobials

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    Blog Post
    ...less potential to become resistant to? CRISPR may provide a method for doing just that. While challenges ...problem. Above all, we need new antimicrobials, ideally ones for which the development of resistance will... antimicrobials using efficiently-delivered RNA-guided nucleases.” Nature Biotechnol. 32(11): 1141-5. ...CRISPR Plasmids for Your Research Read Our CRISPR Guide Pages Find CRISPR gRNA Design Tools ...
  10. Tips for Screening with Yeast Two Hybrid Systems

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    Blog Post
    ...numbers, but the latter eliminates the step of identifying prey proteins after screening. It is also possible...activation. Including a prey-only control also provides a baseline level of reporter activation. Vary ... And most importantly: Independently validate identified binding partners with other techniques! Minimizing... While this may be difficult to resolve for a wide range of prey proteins, there are now a number of...
  11. Rett Syndrome: A History of Research and Therapeutic Outlooks

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    Blog Post
    ...that MECP2 binds to methylated CpG dinucleotides and CAC trinucleotides during neuronal maturation (Tillotson...Sinnamon et al., 2020). They introduced a mouse MECP2 guide RNA and a hyperactive version of the human RNA base...fine-tuning dosage so that enough wild-type MECP2 is made inside the cells, but this is exciting progress in tackling...
  12. Hot Plasmids Spring 2024

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    Blog Post
    ... Adamson Lab recently used a CRISPRi screen to identify additional host factors impacting prime editing...subthreshold voltage fluctuations, while having high fidelity during action potentials of fast-spiking neurons... combination with miR124T targeting sequences, provides a simple yet valuable tool for microglia research...2023). Simple and Highly Specific Targeting of Resident Microglia with Adeno-Associated Virus. bioRxiv...
  13. Viral Vectors 101: Pseudotyping

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    Blog Post
    ...pseudotyping allows these viruses to infect neurons. Besides altering the host tropism of your virus, there ... as a retrograde tracer so that scientists can identify the neurons that project to a given brain region... resources on the Addgene blog: Read the Quick Guide to All Things Lentivirus Get tips for titering your...Resources on Addgene.org: Check out the lentivirus guide Find ready-to-use lentiviral preps at Addgene ...
  14. Plasmids 101: Plasmid Incompatibility

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    Blog Post
    ...theory for plasmid incompatibility is due to an identification issue: the CBPs in the cell can’t tell the ... lost from the cell at a higher rate than the coresident plasmid. Asymmetric plasmid loss occurs for several...based on sequence data. However, if these do not provide clarity, a wet lab transformation experiment will...Genomics of microbial plasmids: classification and identification based on replication and transfer systems and...
  15. CRISPR-mediated Plant Base Editors

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    Blog Post
    ... defective gene, Xm, the sequence of which is identical to the correct gene, Xw, except for a single base...vectors have two Bsa1 sites to clone the single guide RNA (protospacer+scaffold) in a pol-III (OsU3) promoter... in a ‘GC’ sequence context. If this cannot be avoided, select the target AID version. Expect very low...PMC4873371.  2. Nishida, Keiji, et al. "Targeted nucleotide editing using hybrid prokaryotic and vertebrate...
  16. Plasmids 101: E. coli Strains for Protein Expression

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    Blog Post
    ...growth phase are alive and healthy, which makes them ideal for protein expression. If you wait too long to ...and pLysE—the difference being that the latter provides tighter control of basal expression. What if I... growth media, or if your plasmid is low-copy, consider reducing the antibiotic concentration. Growth ...which contain hydrophobic regions or multiple disulfide bonds may aggregate and become insoluble. These...
  17. Four Ways to Package Transgenes That Exceed the Size Limit of Adeno-associated Virus

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    Blog Post
    ...First, some history. In 2008, the Auricchio lab decided to solve the issue of “tiny vector, big transgene...of expressing a truncated protein. This can be avoided by excluding a stop codon from donor A in any of... to be reconstituted, there is currently no one ideal split vector system. Overall the efficiency of transgene...Resources on Addgene.org: Check out the Addgene AAV guide Find ready-to-use AAV preps from Addgene's viral...
  18. An Integrin Antibody Toolkit from IPI

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    Blog Post
    ... function — providing researchers new tools to identify integrin presence, study signaling mechanisms,...function-blocking integrin antibodies exist, almost all bind outside the ligand-binding pocket, their sheer size impeding...monoclonals, we anticipate that our chemically identical hybridoma-derived antibodies will also work in... More resources from Addgene Addgene's Antibody Guide Antibodies 101: Flow Cytometry Antibodies 101: Introduction...
  19. Plasmids 101: Common Lab E. coli Strains

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    ... the thousands! The goal of this article is to provide enough background for you to distinguish the features...resistance to tetracycline Additionally, Table 2 provides a quick reference for some of the popular strains...strains are all based on E. coli K-12 and are considered BSL-1. Table 2: Lab strains of E. coli Strain...a Greek delta (Δ).  Additional resources We've provided an overview of the common lab strains; however...
  20. Recombinase-based State Machines Enable Order-dependent Logic in vivo

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    Blog Post
    ...DNA-sequence configuration (state) based on the identity and order of a particular set of inputs, may be...sequencing.  A less straightforward, but more population-wide (as opposed to single-cell) approach is to interrogate...too expensive, then the qPCR method should be considered as an alternative. The qPCR method can be performed...researchers adapt GRSMs for their research, we provide MATLAB-based software that automates the design...
  21. Antibodies 101 Series on TikTok

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    Blog Post
    ...updates whenever a new video is posted! If TikTok isn't your platform, all of our videos will also be shared...bite-sized portions of antibody concepts. Each short video answers an Antibodies 101 question, like "what is...
  22. Overwhelmed? Take a Break With Our 5 Favorite Science Comics

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    Blog Post
    ...different? If you still need an extra push, there’s evidence that laughter really can be good for you. A search...laughter” turns up a few fun and very recent bits of evidence. (What can I say, we are scientists). Researchers...way to connect with other people. (We don't need evidence for that one, do we?) OK, so, now that we’ve convinced...
  23. Top Requested Plasmid of 2017 - pMD2.G

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    Blog Post
    ...cells that it can infect. The VSV-G envelope is widely used and requested because it enables lentiviruses...how lentiviruses work, check out our lentivirus guide page. For more protocols and information, be sure...requested plasmid of 2018! Additional Resources Quick Guide to All Things Lentivirus 5 Tips for Troubleshooting...
  24. Addgene’s New Way to Help You Share Science

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    Blog Post
    ... with “A Better Way to Share Science” for: The inside scoop from scientists who have deposited plasmids...technician, or Principal Investigator. How-to guides for troubleshooting your experiments and getting...and Facebook. We’ll track down the story, get the inside scoop, and keep you informed.  ...
  25. Deck the Lab 2022!

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    Blog Post
    ...take samples from my assay at like 23:00, so I decided to make a giant snow angel for biologists in our...but to place it next to our lab trash (which coincidentally matches our Christmas tree's RGB colors) 😅...)   Here’s how to enter: Post your picture or video for either contest on Twitter or Instagram by December...
  26. Our New Antibody Mascot is....

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    Blog Post
    ...After an agonizing week spent in cloistered consideration, and with much debate, we have finally narrowed...   But between these options, we simply can't decide! Abi, Lin, or Blottie? Which name best fits our...our new immunoglobulin friend? Please help us decide by voting for your favorite on this form or head over...
  27. #DeckTheLab with Tinsel and Test Tubes, Fa La La La La La La La La

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    ... #DeckTheLab contest is a time for scientists worldwide to show off their decorating skills. To join the...contest:   🎶Walking in a Winter Wonderlab🎶 We decided to #DeckTheLab with virus snowflakes from @CVRHutchinson...2020 Here’s how to enter: Post your picture or video for either contest on Twitter or Instagram by December...
  28. Countdown to Halloween @Addgene

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    Blog Post
    ...were indeed occurring earlier but that the photo evidence was destroyed to protect the innocent revelers...always nostalgia (old board games and movies can provide great character costumes). All of this costume ... checkout our FB page on Friday for more photo evidence.        ...
  29. Interview with Bart Newland, Addgene’s Newest Board Member

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    ...My dad was a chemist and he actually gave me the idea of going into law. He said, “you know, the patent...my role is bringing experience and judgement to a wide variety of business decisions that are not “legal...see how I can help. Q: What do you enjoy doing outside of work? BN: I love to travel and that's been difficult...
  30. Podcast: Interview with Addgene's Founders

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    ... founding Addgene, where the idea for Addgene came from and how the idea got off the ground Chapter 3 ...the Addgene Blog Addgene's a nonprofit? Get an Inside Look at Addgene's NGS Quality Control Addgene's...
Showing: 811 - 840 of 1104 results