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Showing: 221 - 240 of 756 results
  1. Unique and persistent IDs for improved reproducibility: Addgene now supports RRIDs and compact identifiers for all plasmids

    Type
    Blog Post
    Published
    Nov. 20, 2018, 8:17 p.m.
    ...that when you click on the link it will take you directly to the original article online. It is also designed...several journals or organizations now recommend or require authors to use specific PID formats. For example...Addgene registered prefix and the Addgene ID # are directly at the end of the n2t.net web address. For the...scicrunch.org/resolver/RRID:Addgene_87155) will take you directly to the lenti-Cas9-VQR plasmid page. Despite their...your choice. Or if in doubt, copy and paste the entire line. Cite plasmid using a resolvable compact identifier...
  2. Trading Spaces - Visiting Scientist Edition

    Type
    Blog Post
    Published
    Aug. 22, 2023, 1 p.m.
    ... institute, meaning the host university does not hire or pay them (typically). A visiting scientist is...from equipment sharing or a collaboration – it requires re-location of the scientist to the new institute... reason. Visiting would allow you to train and acquire the data you need on the new instrumentation. Bonus...yourself. Identify reagents you will need, any required training, and a priority list of experiments you...have a bench mentor or anyone else available to directly help you during your visit. Reach out to your ...
  3. Optimizing Donor DNA for Enhanced CRISPR Genome Editing

    Type
    Blog Post
    Published
    March 24, 2016, 2:30 p.m.
    ...thus inactivating genes), while breaks repaired by homology directed repair (HDR) pathways can modify the...causes two types of editing outcomes: Cas9 breaks repaired by the non-homologous end-joining (NHEJ) pathway...Richardson, Christopher D., et al. "Enhancing homology-directed genome editing by catalytically active and inactive...26789497.  2. Lin, Steven, et al. "Enhanced homology-directed human genome engineering by controlled timing ...
  4. Synthetic Photobiology: Optogenetics for E. coli

    Type
    Blog Post
    Published
    Sept. 8, 2015, 2:30 p.m.
    ...scientists seek to directly probe and build new systems. Such goals require methods to directly activate and...TCS-induced responses are varied; one outcome is directed transcription from a given promoter. To harness...been greatly streamlined; only two plasmids are required per system. Applications of these systems The ...
  5. Plasmids 101: Mammalian Vectors

    Type
    Blog Post
    Published
    March 25, 2014, 3:15 p.m.
    ... bacteria) or incorporate the genetic material directly into the genome to form a stable transfection....the plasmid, and can be assayed conveniently. A direct test for your gene of interest may be another method...viral-based ORIs to fill the void. These ORIs, however, require additional components expressed in trans within... Stably transfected cells may be considered an entirely new cell line from that of the original parental...important to determine the proper concentration required for efficient selection. This is usually achieved...
  6. Clear and Accessible Writing

    Type
    Blog Post
    Published
    Feb. 15, 2024, 2:15 p.m.
    ... is used by screen readers to provide visually impaired visitors with information about images that a ...primarily negative. Stupid, overwhelmed, discouraged, tired…words that indicated there were many barriers between...paper.  Of course, when you think about writing an entire scientific paper, you may feel it’s overwhelming...describe the image in a way that helps visually impaired readers receive the same information as sighted... writing. You can use them to help you write an entire manuscript, or you could use them to write alt ...
  7. Viral Vectors 101: Viral Vector Elements

    Type
    Blog Post
    Published
    July 25, 2023, 1 p.m.
    ...though. Viral packaging and entry The genetic cargo requires viral packaging to infiltrate and integrate into...outlined above for gamma-retroviruses. While not required for lentiviral production, they can be helpful...packaging proteins for AAV are rep and cap. Rep is required for viral replication and also aids in infrequent...target different tissue or cell types. AAV also requires some back up from adenovirus genes – E4, E2a, ...LXs/Iva2 are primarily capsid assembly proteins required for packaging of the virus into particles. E2A...
  8. Plasmids 101: Sequence and Ligation Independent Cloning (SLIC)

    Type
    Blog Post
    Published
    Sept. 26, 2024, 1:15 p.m.
    ...use site-specific recombination, it also doesn’t require a ligation step. Based on the robust system of ...that position, preventing T4 from chewing back the entire 10–12 bases. As such, the use of LIC is often limited...the same tube. Alternatively, SLIC can also work directly on PCR products, with 5′ overhangs generated either...product with two 5′ overhangs, so these approaches require higher concentrations of insert to succeed. 5′ ...polymerase is much less expensive than the enzymes required for Gibson assembly. SLIC is a standardized method...
  9. Antibodies 101: ChIP

    Type
    Blog Post
    Published
    March 10, 2022, 3:25 p.m.
    ...very similar for both, though tissue samples do require an extra homogenization step. For this blog, we're...throughout the sample processing and therefore will require crosslinking, which uses formaldehyde or UV light...provides a truly random digestion, but is harsher and requires more optimization. Enzymatic digestion, while ...both tissue or cell type, amount of protein, and desired fragment length for your output assay. A longer...https://www.wannapik.com/   Even though ChIP requires a larger upfront investment than many other antibody...
  10. Plasmids 101: Inducible Promoters

    Type
    Blog Post
    Published
    Jan. 18, 2018, 2:34 p.m.
    ...for use in prokaryotes and eukaryotes, works via direct activation. In this system, the activator rtTA ...negative inducible pLac promoter. This promoter requires removal of the lac repressor (lacI protein) for...eukaryotic cell types (mammalian, yeast, plants, etc.) require unique promoters and there is very little crossover...induce a given promoter varies. Promoters that require only the addition of an external inducer, like ...very rapidly. In contrast, promoter systems that require transcription of a repressor/inducer will have ...
  11. Plasmids 101: Methylation and Restriction Enzymes

    Type
    Blog Post
    Published
    June 30, 2016, 2:30 p.m.
    ...often used for site directed mutagenesis. During this process, incorporation of a desired mutation into your... not the newly synthesized product from a site-directed mutagenesis experiment? The answer to both questions...not correct! Conversely, enzymes such as DpnI require methylation at their recognition sites in order...overlapping methylation Not affected Not affected DpnI Requires methylation for activity Not affected Not affected...
  12. 3 Challenges in Plant Synthetic Biology

    Type
    Blog Post
    Published
    July 22, 2014, 5:46 p.m.
    ... and synthetic biology. The mistrust and anger directed at GM crops has burdened this emerging engineering...Revolution Bio, we are addressing this challenge directly by developing a plant biotechnology product specifically...through conventional breeding; synthetic biology is required to achieve this novel and unique phenotype. It...control over their interaction with it, we hope to inspire and open a new conversation about GMOs.  Challenge...technologies like those pioneered by Ewen Mullins of Ireland’s Teagasc.  Plant biotechnology is full of potential...
  13. How to Deposit Your Plasmids with Addgene

    Type
    Blog Post
    Published
    Feb. 27, 2024, 2:15 p.m.
    ...plasmid(s). Fields marked with an asterisk are required. If submitting plasmid(s) using a spreadsheet ...Unpublished or pre-publication plasmids" and set a desired distribution status. You can submit "Published ...general description of the deposit. Select your desired distribution status: Hold for publication: we... need; you can copy and paste your information directly into the file. Email the completed spreadsheet... sequences cloned into it. gRNAs are used for directing CRISPR/Cas9 to a targeted genomic location, while...assembled or theoretical — it does not have to be entirely verified by sequencing. Upload any support files...
  14. Plasmids 101: The protein expression toolbox

    Type
    Blog Post
    Published
    Feb. 16, 2023, 7:05 p.m.
    ...’ve got you covered. Defining your control requirements To pick the best tool for the job, it’s important...important to know what the job requirements are. Here are the questions you should be asking. What kind ...recombinase. This is a time-tested system but does require knock-in of the LoxP sites, which is more difficult...control all the time If your experimental system requires tunable control - or maybe you’re just a control...time consuming. If your native protein doesn’t require this level of control, one of the previous options...
  15. Hot Plasmids - March 2020 - base editors, GEVI, MoClo, and optogenetics

    Type
    Blog Post
    Published
    March 3, 2020, 2:15 p.m.
    ...retina, heart, and skeletal muscle. The dosing required to achieve these efficiencies was also between...mutation that causes Niemann-Pick disease type C, directly demonstrating the therapeutic potential for the...output the voltage changes in neural activity when paired with appropriate fluorescent optics. Existing red... sequences for genomic integration by homology directed repair. Using parts from this kit, the McCormick...The cofactor analog, phycocyanobilin (PCB), is required for PhyBΔ to be functional. Exposure to red light...
  16. What's New in CRISPR - November 2021

    Type
    Blog Post
    Published
    Nov. 18, 2021, 2:15 p.m.
    ...that mismatch repair (MMR) interfered with the desired resolution of prime editing intermediates. Building... In PRIME-del, developed by Jay Shendure’s Lab, paired pegRNAs work with the PE2 enzyme from the Liu lab...that PRIME-del can be “multiplexed” using pooled paired pegRNAs.  Read the paper in Nature Biotechnology... strategy engineered by Wen Xue’s lab also uses paired pegRNAs targeting complementary DNA strands to ...sequence. As with other prime editing tools, the desired edits are templated by the 3′ extension of the ...
  17. CRISPRainbow and Genome Visualization

    Type
    Blog Post
    Published
    Feb. 28, 2017, 3:30 p.m.
    ...cannot induce gene editing, but it retains its gRNA-directed targeting capacity. By using a gRNA to target ...of these orthologs is key: since each ortholog requires a different PAM sequence, a gRNA designed for ...different fluorescently labeled dCas9s are efficiently directed to the proper target sequence. They succeeded ...color is specified by PAM sequence, each color requires a different Cas9 ortholog, and the target sequence...in combination with gene editing. CRISPRainbow requires very short, 11-mer gRNAs, which do not induce ...
  18. The Future of Research Symposium Boston 2015

    Type
    Blog Post
    Published
    Oct. 20, 2015, 2:30 p.m.
    ...scientists are acutely aware of these problems that directly affect their daily lives and future prospects....structure of the biomedical workforce. Quotes taken directly from participants (summarized in 2) touched upon...information on number of postdocs” “Postdocs are really hired to produce results, not scientists”  These comments.... Melanie Sinche is a STEM career counselor, Director of Education for the Jackson Laboratory for Genomic... at Scientific Meetings from Addgene Executive Director Joanne Kamens Learn how to be a successful manager...
  19. Meet an Addgenie: Insights into Grad School, Career Paths, and More

    Type
    Blog Post
    Published
    June 25, 2020, 1:15 p.m.
    ...left school when she was hired full time as a Lab Technician. “I was so tired of being in school so I ...student and I truly enjoyed learning.” Addgene’s Director of Product Management Eric Perkins, who has been... was devastating. At the same time, she has an entirely new path to discover and gives her time to give...interviewees. Fabienne Furt, Addgene’s Associate Director of Business Development, got her PhD in Plant ...
  20. Mouse Modeling, Part 2: Breeding and Crossing Mice

    Type
    Blog Post
    Published
    Aug. 6, 2019, 12:55 p.m.
    ... allele decreases. Crossing mice to generate a desired phenotype Instead, genetic engineering should be...in the journey towards producing mice with your desired combination of mutations. Assuming your parental...generate mice that are homozygous for all of your desired genes. Remember Punnett squares from high school... are homozygous (or hemizygous) at all of your desired alleles to conduct your experiments. You should...target gene in your experimental mice. This will require several rounds of breeding in which you’ll want...
Showing: 221 - 240 of 756 results