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Showing: 1 - 20 of 205 results
  1. CRISPR 101: Any Base Transversion Editors

    Type
    Blog Post
    Published
    April 1, 2025, 1:15 p.m.
    ...apyrimidinic (AP) site. UNG / UDG Uracil DNA N-Glycosylase Removes uracil from DNA, creating an abasic site... Editors. CGBEs first convert a cytosine (C) to uracil (U), just like Cytosine Base Editors (CBEs). But...empty) DNA site using either fused or endogenous Uracil DNA N-glycosylase (UNG) enzymes. Various other ...between the pyrimidine bases (cytosine, thymine, and uracil). Base transversions are edits that convert a purine...leads to the first adenine transversion editors Uracil excision is the most common type of base excision...perhaps analogous engineering of UNG, which excises uracil, could allow it to recognize thymine (T) or cytosine...CGBE C → G Base Editor Converts C → G by fusing a uracil DNA glycosylase to a CBE; the first type of base...
  2. Deep Mutational Scanning with One Pot Saturation Mutagenesis

    Type
    Blog Post
    Published
    Feb. 22, 2017, 3:30 p.m.
    ...(step 2 and 3). Then the uracil-labeled template strand is degraded by uracil DNA glycosylase (UDG) and... in dUTPase and uracil deglycosidase. dUTPase prevents the buildup of dUTP and uracil deglycosidase removes...removes uracil from newly synthesized DNA. Lack of both enzymes leads to a buildup of uracil and the insertion...Supplementary Table 1 of Wrenbeck et al). It uses a uracil labeled wild-type ssDNA as template for a site-...Exonuclease III (ExoIII) (step 4). UDG recognizes uracils that are in DNA and ExoIII recognizes nicked duplexed... insertion of uracil into newly synthesized DNA. This labeled ssDNA is packaged into phage and then extracted...taking a couple days to generate the phage-derived uracil labeled template, this method requires further ...
  3. Plasmids 101: Choosing an Antibiotic Resistance Gene

    Type
    Blog Post
    Published
    Oct. 10, 2023, 1 p.m.
    ...environments.   Carbenicillin   Carbenicillin, colloquially known as carb, belongs to the penicillin family of...issue. The genes and their antibiotics   Ampicillin Ampicillin, often just called amp, is the historical...derivative of the more widely known antibiotic, penicillin, and is a beta-lactam that inhibits cell wall...protein synthesis. The kan resistance gene, NPTII, facilitates phosphorylation of kan, which inactivates it.... with most bacteria? No satellite colonies? Ampicillin Fair {% icon icon_set="fontawesome-5.14.0" name...purpose="decorative" title="Check icon" %} Carbenicillin Excellent {% icon icon_set="fontawesome-5.14.0...
  4. CRISPR 101: Cytosine Transversion Editors

    Type
    Blog Post
    Published
    March 25, 2025, 1:15 p.m.
    ... / UDG Uracil DNA N-Glycosylase Removes uracil from DNA, creating an abasic site. UGI Uracil Glycosylase...removed the uracil glycosylase inhibitor (UGI) components, which inhibit BER during cytosine-to-uracil editing...between the pyrimidine bases (cytosine, thymine, and uracil). Base transversions are edits that convert a purine... editors, like calling it the “edited strand.” Uracil excision repair leads to the first base transversion...cytidine (C) deamination, converting the C base to uracil (U). This is the same chemical reaction performed...editing, and instead introduced its opposite, a uracil DNA N-glycosylase (UNG) from E. coli. The resulting...Glycosylase Inhibitor Inhibits UNG to preserve uracil bases in DNA. References Chen, L., Park, J. E., Paa...
  5. Plasmids 101: Antibiotic Resistance Genes

    Type
    Blog Post
    Published
    Jan. 30, 2014, 3:29 p.m.
    ...colonies! Carbenicillin is more stable than Ampicillin and can be used in place of Ampicillin in most applications...protein synthesis Bactericidal 25-100 ug/mL Ampicillin beta-lactam Inhibits cell wall synthesis Bactericidal...Bactericidal 100-200 ug/mL Carbenicillin beta-lactam Inhibits cell wall synthesis Bactericidal 100...most antibiotics viable for at least 6 months. Ampicillin breaks down especially fast and plates should...
  6. The Crispr Babies Saga Shows the Need for Action, Not More Delays

    Type
    Blog Post
    Published
    Dec. 20, 2018, 1:15 p.m.
    ...to the United Kingdom’s Nuffield Council. While the Nuffield Council has recently published a report on...mitochondrial diseases. The key success of the Nuffield Council’s report is that when it became clear that this ...transmission of mitochondrial disease;” The Nuffield Council began their research into both novel and previously...government regulators, and an independent ethics council – all worked in tandem, within their respective...germline editing technique—too. As the Nuffield Council emphasized, the key to moving research from bench...
  7. The MTA at Addgene

    Type
    Blog Post
    Published
    July 23, 2024, 2:17 p.m.
    ...MTAs.  Addgene does a lot to ensure that we can facilitate a fast and agile MTA process. This is important...deposits in our repository. From 2004 to 2023, we facilitated 784,795 MTAs with 8,798 organizations in 111 ...111 countries. From 2019 to 2023, we averaged facilitating 89,477 MTAs per year.  The MTA Process at Addgene...MTAs for plasmids in our repository. Instead, we facilitate the signing of MTAs by the Provider and Recipient...signature on any subsequent MTA for that plasmid facilitated by Addgene — basically, instead of having to ...
  8. Plasmids 101: The Wide World of Natural Plasmids

    Type
    Blog Post
    Published
    Oct. 8, 2024, 1:15 p.m.
    ..., cells with a penicillin resistance plasmid can grow in spite of a hostile Penicillium fungus trying ...neighbors is to eliminate the competition, and Penicillium isn’t the only organism that knows it. Some bacteria...whole-genome sequencing becomes more relevant (Garcillán-Barcia et al., 2023). In this post, we’ve grouped...e16. https://doi.org/10.1016/j.cell.2024.01.039 Garcillán-Barcia, M. P., Redondo-Salvo, S., & de la Cruz...
  9. CRISPR-mediated Plant Base Editors

    Type
    Blog Post
    Published
    Jan. 3, 2019, 1:35 p.m.
    ...excision repair mediated by uracil glycosylase (Figure 1). The presence of a uracil glycosylase inhibitor (...relies on the efficient delivery of donor DNA to facilitate repair. Since the development of CRISPR-mediated...the CBE deaminates a target cytosine (C) into a uracil (U) base. Later the resultant U-G pair is either...cellular inosine excision repair is not as active as uracil excision, ABE does not require any additional inhibitor...
  10. Mycoplasma Contamination: Where Does It Come From and How to Prevent It

    Type
    Blog Post
    Published
    Oct. 8, 2020, 1:15 p.m.
    ... They are present in most of the cell culture facilities, tissue culture labs and every cell culturist...resistant to antibiotics and antibacterial drugs like penicillin and streptomycin. Mycoplasma can pass through... and guidance to the people working in the lab facility. This can be done by training eligible staff for...lines. Providing such an environment for the lab facility will not only reduce mycoplasmas but also avoid...Equipment Fumigate the laminar airflow and the lab facility periodically. The CO2 incubators, used for maintaining...
  11. CRISPR 101: Cytosine and Adenine Base Editors

    Type
    Blog Post
    Published
    Feb. 13, 2025, 2:15 p.m.
    ...These fusions convert cytosine to uracil without cutting DNA. Uracil is then subsequently converted to...DNA replication or repair. Fusing an inhibitor of uracil DNA glycosylase (UGI) to dCas9 prevents base excision... without producing a double strand break. UGI = uracil DNA glycosylase. Created with BioRender.com. ...These byproducts likely resulted from excision by uracil N-glycosylase (UNG) during base excision repair...
  12. Educational Planarian Tools for Teaching Developmental Biology Techniques

    Type
    Blog Post
    Published
    May 24, 2018, 1:20 p.m.
    ...dorotocephala, Phagocata morgani, and Phagocata gracillis. There are 11 different genes cloned into plasmids... nucleotides (for example, Digoxigenin-labelled Uracil) that will bind to complementary mRNA within an...designated as DE3. For Phagocata morgani and Phagocata gracillis, the process is a little more complicated. These...the dsRNA into Phagocata morgani and Phagocata gracillis, one has to purify the dsRNA from bacteria and...
  13. Plasmids 101: Degron Tags

    Type
    Blog Post
    Published
    March 14, 2024, 1:15 p.m.
    ... or C terminal of a protein and can inducibly facilitate the degradation of the tagged protein. Degrons...here are all conditional, meaning that they only facilitate degradation of their fused protein under certain...through interacting ligands. After an E3 ligase facilitates ubiquitination of the Halo-tagged protein in ...HaloTag and its PROTAC are all that is needed to facilitate degradation. HaloTag is also the degron tag with...
  14. Supporting Reproducibility with a Connected ELN

    Type
    Blog Post
    Published
    Jan. 17, 2019, 1:38 p.m.
    ...characteristics and capabilities an ELN needs to facilitate true reproducibility. The following are critical...making it easy to get data out of the ELN; and (2) facilitate inter-operability with other research tools and...describe how each of these kinds of connectivity facilitates reproducibility. Connectivity to other data sources...Framework, Data Dryad, and Figshare. Any ELN that facilitates reproducibility has to make it easy to export...
  15. Plasmids 101: Broad Host Range Plasmids

    Type
    Blog Post
    Published
    April 11, 2024, 1:15 p.m.
    ... spp., Rhodospirillum spp., Shewanella spp., Thiobacillus spp., Xanthomonas campestris IncQ RSF1010...Gram-positive  Acinetobacter calcoaceticus, Actinobacillus pleuropneumoniae, Actinomyces naeslundii, A..., Streptomyces lividans, Synechococcus spp., Thiobacillus ferrooxidans, Vibrio salmonicida, Yersinia enterocolitica...Gram-negative  Alcaligenes eutrophus, Bartonella bacilliformis, Bordetella spp., Brucella spp., Caulobacter...
  16. Using AAV for Neuronal Tracing

    Type
    Blog Post
    Published
    Aug. 9, 2018, 1:04 p.m.
    ...also use different cytoskeletal machineries to facilitate transport: retrograde transport relies on dynein...2014). It is currently unclear which proteins facilitate transport of neuronal tracing compounds and this...-Gold (Schmued and Fallon, 1986) are used. To facilitate cellular uptake of these dyes in vivo, microinjection...rAAV2-retro’s altered amino acid sequence might facilitate interaction with uptake or intracellular transport...mechanisms of intracellular transport of AAV could facilitate the development of more powerful AAV serotypes...
  17. Multiple Plasmids at a Low Price: Kits from Addgene

    Type
    Blog Post
    Published
    Sept. 14, 2016, 2:30 p.m.
    ...within this kit contain a variety of promoters to facilitate gene expression in bacteria, yeast, mammalian...His, Avi, and GFP) as well as protease sites to facilitate protein purification. We hope this kit will allow...Furthermore, some plasmids contain peptides to facilitate protein folding and/or protease sites to remove...kit can be used to purify proteins from E. coli, Bacillus subtilis, or Pichia pastoris depending upon your...
  18. Site Directed Mutagenesis by PCR

    Type
    Blog Post
    Published
    Aug. 2, 2016, 2:30 p.m.
    ...mutagenesis generally applies to plasmids, but may also facilitate genome editing. Tailored mutations are commonly...high homology to the endogenous target, yet to facilitate the repair, the template should be resistant ... restriction site through mutagenesis vastly facilitates the subsequent process of screening for succesfully...template. Amplification of GC-rich plasmids is facilitated by the addition of DMSO to the PCR reaction (...
Showing: 1 - 20 of 205 results