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Showing: 341 - 360 of 773 results
  1. Don’t FRET: Bimolecular Fluorescence Complementation Makes Visualizing Protein-Protein Interactions Easy

    Type
    Blog Post
    Published
    Aug. 27, 2020, 1:15 p.m.
    ...such experiments, small-molecule inhibitors are tested in parallel for their ability to prevent BiFC resulting...preferably, some information about the structures of the tested PIPs. Many split FPs have been validated for BiFC...- and C-terminal end of each PIP and empirically test which combination provides the best fluorescent ...appropriate controls may requires that you empirically test a number of mutants to identify those that inhibit...
  2. Fluorescent Proteins 101: Green Fluorescent Protein (GFP)

    Type
    Blog Post
    Published
    May 15, 2014, 3:33 p.m.
    ...spontaneously and without additional co-factors, substrates, or enzymatic activity – it only requires the...means to many functional ends. We’ve listed our favorites below, but many other uses currently exist, and...used; one fused to each protein or domain being tested. Find FRET plasmids here. Split EGFP: An alternative...(FACS): This is a type of flow cytometry that separates mixtures of cells into distinct populations based...
  3. Getting the Most from Your Lentiviral Transduction

    Type
    Blog Post
    Published
    April 7, 2016, 2:30 p.m.
    ...may include reduced saturation density, decreased rates of growth, or clumping. To ensure the best possible... culture-based experiment, labs should routinely test for mycoplasma contamination. There are several ...with freely available positive controls. Routinely test your cell line for mycoplasma and discard it if ...routinely produce lentivirus may want to consider testing a variety of cation and serum sources to ensure...
  4. Binning Singletons: Tackling Conference Networking When You Don’t Know Anyone

    Type
    Blog Post
    Published
    Feb. 18, 2020, 2:15 p.m.
    ...as well as their bin-mates.  They liked us. They really liked us.  The testimonials from participants in...explained my situation and asked if she had a few minutes to point me in the right direction for my future....” These sentiments were echoed in the other testimonies we gathered. The program definitely caused a ...
  5. Antibodies 101: Immunoprecipitation

    Type
    Blog Post
    Published
    Dec. 7, 2021, 2:15 p.m.
    ...the immunoglobulin, leaving the antigen binding sites free to capture the target protein. The beads can...indiscriminately, causing competition for binding sites. In cases like these, antibodies can be directly...sample. It is important to remember that sample lysates will also contain proteases and phosphatases that...sample.  Eluting the target protein for downstream testing Once the non-specific proteins are removed through...
  6. To Codon Optimize or Not: That is the Question

    Type
    Blog Post
    Published
    Nov. 12, 2020, 2:15 p.m.
    ...modification sites and even affect protein function (Mauro and Chappell, 2014). Different rates of translation...base-pairing mechanism for translation initiation in eukaryotes. Nat Struct Mol Biol 13:30–34 . https://doi.org...Zavolan M (2013) Analysis of CDS-located miRNA target sites suggests that they can effectively inhibit translation...
  7. Viral Production at Addgene

    Type
    Blog Post
    Published
    Oct. 24, 2023, 1:15 p.m.
    ...The data is also used to determine recombination rates in FLEX/DIO/fDIO constructs. Endotoxin Endotoxin...sterility. Transducibility Some viral vectors are tested in vitro and in vivo for gene expression and/or...obtained directly from Takara, and is routinely tested for mycoplasma contamination using mycoplasma detection...two weeks post-thaw, cell culture supernatant is tested for mycoplasma contamination. To date, Addgene ...
  8. CRISPR 101: Targeting RNA with Cas13a (C2c2)

    Type
    Blog Post
    Published
    Sept. 21, 2017, 2:07 p.m.
    ... Cas13a binds and cleaves RNA rather than DNA substrates. In terms of structure, Cas13a shares no homology...molecule through a uracil-rich stem loop and facilitates target binding and cleavage through a series ...changes in the Cas13a molecule. Like Cas9, Cas13a tolerates single mismatches between the crRNA and target...PMC4660269. 7. Joung J, Ladha A, et al., ‘Point-of-care testing for COVID-19 using SHERLOCK diagnostics.’ medRxiv...
  9. Hot Plasmids - August 2020

    Type
    Blog Post
    Published
    Aug. 18, 2020, 1:15 p.m.
    ...labeling. For labeling the plasma membrane, they tested different target sequences for improved selectivity... Umemura have described a simple method which alleviates the inclusion body problem and makes nanobody...and gRNAs. The multi-gRNA piggyBac vector integrates into genomic DNA with the help of the piggyBa... Image from Hazelbaker et al., 2020. The lab tested this system by repressing and activating expression...
  10. Plasmids 101: E. coli Strains for Protein Expression

    Type
    Blog Post
    Published
    Feb. 10, 2015, 3:06 p.m.
    ... (pLemo) Rhamnose-tunable T7 RNAP expression alleviates inclusion body formation. Expression vector cannot... recA+, KmR Expression of toxic proteins  * Denotes the presence of an additional plasmid-- make sure...setting up a small-scale expression experiment to test variables such as temperature, time, and media conditions...temperature or moving it to a bench-top shaker 10-20 minutes before adding the inducer. Growth Media: Changing...
  11. Plasmids 101: The Promoter Region – Let's Go!

    Type
    Blog Post
    Published
    April 3, 2014, 8:05 p.m.
    ...tightly regulated. Common promoters for eukaryotes and prokaryotes We have included two reference tables...bacteria this is done by a single enzyme; however, eukaryotes have muliple polymerases which are each responsible...mRNA Drosophila promoter conaining Gal4 binding sites Specific Requires the presence of Gal4 gene to activate...
  12. Targeting HIV-1 with CRISPR: Shock and Kill or Cut it Out?

    Type
    Blog Post
    Published
    May 10, 2016, 2:30 p.m.
    ...-target sites with up to 7 mismatches to the gRNA target sequence. Kaminski et al. next tested their procedure...targeting of the enhancer region near the NF-KB binding sites increased activation of HIV promoter-luciferase ...expression of Cas9/gRNAs, which could result in higher rates of off-target cleavage. In both cases, translating...
  13. Plasmids 101: Gibson Assembly and Other Long-Homology Based Cloning Methods

    Type
    Blog Post
    Published
    March 1, 2016, 3:30 p.m.
    ...not require the presence of specific restriction sites (or lack thereof) nor a serious time commitment....of fragments, but uses site specific restriction sites (Type IIS restriction endonucleases) to cleave DNA...that the vectors and DNA fragments contain these sites at the correct location and NOT in the middle of...flanked by orthogonal versions of the attB and attP sites recognized by the integrase. This method requires...
  14. Antibodies 101: Introduction to Immunofluorescence

    Type
    Blog Post
    Published
    Nov. 16, 2021, 2:15 p.m.
    ...molecules, knowing that where you see fluorescence indicates your target’s location. Some other terms you might... The biggest difference between IF and ICC/IHC relates to the type of secondary antibody you use, so as...corresponding protocols. Other researchers may also have tested an antibody in IF and will share their findings...of interest. Thankfully, there are a number of websites compiling antibody data that can help you compare...
  15. Fluorescent Proteins 101: When GFP lets you down

    Type
    Blog Post
    Published
    Aug. 23, 2018, 12:05 p.m.
    ..., followed by an intramolecular reaction that generates the chromophore (Tsien, 1998). Importantly, this...absorb light at 488 nm. The ratio between the two states is reflected by the pKa, which is around 6.0 for...relatively small, adding GFP may alter diffusion rates. Smaller genetically encoded probes are based on...Adjobo-Hermans, 2011). Structural information facilitates the choice of the proper site, although it still...
  16. Adeno-associated Viruses (AAVs) for Genome Editing

    Type
    Blog Post
    Published
    March 27, 2018, 1:32 p.m.
    ...approach is most well suited, since it routinely generates knockin efficiencies of 1-40% with G418-selected... AAV to deliver their repair template to mouse zygotes and thereby correct a mutation that causes Hemophilia...technique to efficiently deliver large repair templates for applications that require large gene fusions...Porteus. "CRISPR-mediated integration of large gene cassettes using AAV donor vectors." Cell reports 20.3 (2017...
  17. Transferable Skills Guide: Conflict Resolution

    Type
    Blog Post
    Published
    Jan. 4, 2022, 2:15 p.m.
    ... Fig 1: Quote from Michael Ende, courtesy of morefamousquotes.com A good listener absorbs and remembers...college, when I discovered that many of my old suitemates stopped talking to each other if I was not there... diagram of the Thomas-Kilmann Conflict Model, courtesy of https://managementweekly.org/thomas-kilmann-conflict-resolution-model...
  18. Four Ways to Package Transgenes That Exceed the Size Limit of Adeno-associated Virus

    Type
    Blog Post
    Published
    Sept. 1, 2020, 1:15 p.m.
    ...different splice site donor and acceptor sequences were tested and with the optimal sequences, the group achieved...homologous recombination approach delivers large donor templates using two sequential homology directed repairs...2017) CRISPR-Mediated Integration of Large Gene Cassettes Using AAV Donor Vectors. Cell Reports 20:750–756...PA (2002) An mRNA Surveillance Mechanism That Eliminates Transcripts Lacking Termination Codons. Science...
  19. Building Global Connections with the International Mentorship Program USA-EUROPE

    Type
    Blog Post
    Published
    Nov. 6, 2015, 3:30 p.m.
    ...country of origin with an international mentor creates a closer and more approachable relationship for...evidence of this, you needn’t look any further than testimonials from the students who participated in the program... of Oviedo, the European University Miguel de Cervantes, the University of Navarra, and the University...macular degeneration. She is also a blogger who writes posts for the blogs of MasScience, ECUSA, IMFAHE...
  20. Tips for a 1st Time CRISPR User (by a 1st Time CRISPR User)

    Type
    Blog Post
    Published
    March 7, 2017, 3:30 p.m.
    ...Surveyor assay to look for genomic edits at the BRAF sites targeted by my specific gRNAs (Figure 4). The most...cleavage products. The appearance of the 428 bp band indicates edits in the BRAF gene in the BRAF-gRNA transduced...a gene knockout was straightforward, and is a testament to how far genome engineering has come. For comparison...Population by Limiting Dilution Lentivirus Production Websites Primer3: for Designing Primers UCSC Genome Browser...
Showing: 341 - 360 of 773 results