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  1. No Llamas Required - Synthetic Nanobodies Against Membrane Proteins

    Type
    Blog Post
    Published
    June 18, 2020, 1:15 p.m.
    ...large heavy chains and two small light chains that stick out to form the “arms” holding the highly variable...the mRNA molecule, forming a ribosome complex consisting of the translated protein (sybody), ribosome,...constructed, they are used to produce a phage library consisting of phages that display the candidate sybodies...
  2. Plasmids 101: Knockout/Knock-In Plasmids

    Type
    Blog Post
    Published
    Dec. 1, 2016, 3:30 p.m.
    ...One of the most powerful strategies to investigate a gene's function is to inactivate, or "knockout",...(Figure 4). When recombination occurs, the gene still functions normally because one of its exons has ...are located in intronic regions, this gene will still be expressed. You'd first screen for this specific...
  3. PCR Applications for Copy Number Variation Assays

    Type
    Blog Post
    Published
    April 26, 2022, 1:15 p.m.
    ... In that case, an RQ value of one (or, more realistically, between 0.80-1.20) would mean you have one ...each reaction, math happens (this time, Poisson statistics), and the readout gives an absolute value of ...hg0721s80 Colborn JM, Byrd BD, Koita OA, Krogstad DJ. Estimation of copy number using SYBR Green: confounding ...
  4. The AAVantages of AAV in CRISPR Screens

    Type
    Blog Post
    Published
    Feb. 4, 2025, 2:15 p.m.
    ...AAV and lentivirus have low immunogenicity, AAV still beats lentivirus. In mice, AAV is almost entirely...high degree. This is particularly helpful when investigating tissue-specific diseases, as you can target ...doi.org/10.1038/s41596-022-00700-y Hanlon, K. S., Kleinstiver, B. P., Garcia, S. P., Zaborowski, M. P., Volak...
  5. Viral Vectors 101: Voltage Indicators

    Type
    Blog Post
    Published
    Jan. 30, 2024, 2:15 p.m.
    ...sensing component, which separates them into two distinct categories detailed below. Voltage Sensitive Domain...fluorescence all have room for improvement. These sensors still have many useful applications, though, and if you...this two-part fluorescent system, and rhodopsin still functioning as the voltage sensor. FP-rhodopsin ...
  6. Cloning Mammalian Cells with the Agarose Method

    Type
    Blog Post
    Published
    Sept. 7, 2017, 12:17 p.m.
    ...a minute, when it is only warm but not hot- and still liquid- it is rapidly poured onto the middle of ...individual cell clones with different expression characteristics from a population of transfected clones. The...two 48-well plates of clones) which enables investigators to identify specific clones with desirable properties...
  7. Plasmids 101: Optimizing Plasmid Yields

    Type
    Blog Post
    Published
    May 26, 2016, 2:30 p.m.
    ...handy guide from OpenWetWare for a more extensive listing of common E. coli strains. Increase the volume ..., based on determining the cell density or by harvesting and miniprepping at various time points. Measuring...Bacterial Transformation Learn How to Perform a Diagnostic Restriction Digest Additional Resources Sigma-Aldrich...
  8. When is a Monomer not a Monomer? The Top Three Ways Your Favorite Fluorescent Protein Oligomerizes in Cells

    Type
    Blog Post
    Published
    April 19, 2016, 2:30 p.m.
    ...localization, dynamics, and behavior of a POI. As an investigator, you want a fusion tag to be inert, to not produce...has gone into making FPs monomeric, yet many investigators remain ignorant of FP dimerization. Equally ... Jennifer Lippincott-Schwartz at the National Institutes of Health and he is currently an Associate Professor...
  9. CRISPR 101: Mammalian Expression Systems and Delivery Methods

    Type
    Blog Post
    Published
    Sept. 24, 2015, 2:30 p.m.
    ...vector Promoter driving Cas9 expression can be constitutive or inducible. U6 promoter is typically used ...will want to invest some time in optimizing and testing the efficiency of CRISPR delivery. There are a ... at Addgene that have been published as CRISPR testing tools: Traffic Light Reporter System: Can evaluate...
  10. Transgenic Organisms, Cas9 Gene Drives, and Appropriate Safeguards

    Type
    Blog Post
    Published
    May 22, 2015, 4:58 p.m.
    ...Wyss Technology Development Fellow at the Wyss Institute and Harvard Medical School. Scientists making ...efforts to develop formal guidelines to answer this question. Until then, using multiple confinement strategies...effort to implement (depending on the species in question), why not use them whenever applicable?Against...
  11. Isolating Genomic Regions of Interest with the CRISPR System

    Type
    Blog Post
    Published
    May 30, 2019, 12:44 p.m.
    ...specific genomic region using the CRISPR system, consisting of dCas9 and targeting gRNA, to identify molecular...vitro" form. In this form, the CRISPR complex, consisting of a recombinant dCas9 protein and synthetic ...2017). This upregulates expression of IGF2, a characteristic of many human malignancies. Additionally, the...
  12. Viral Vectors 101: The Retroviral Lifecycle

    Type
    Blog Post
    Published
    July 27, 2023, 1:15 p.m.
    ...its first steps! However, retroviral vectors can still direct the translation of proteins because they ...and transduction by vectors (which we sometimes still call “infection” as a shorthand, although it is ... the viral RT protein (Faras et al., 1973). Interestingly, retroviruses are generally only “pseudodiploid...
  13. Deep Dive: Fixing and Permeabilizing for Immunofluorescence

    Type
    Blog Post
    Published
    Aug. 30, 2022, 1:15 p.m.
    ...ll prevent binding to any target protein that is still on the inside of the cell. However, assuming you...hidden epitopes. However, keep in mind that you will still contend with many of the same drawbacks to each ...early steps don’t even involve antibodies, they are still critical to the outcome of your IF experiment and...
  14. INTEGRATE: Bacterial Genome Engineering Using CRISPR-Transposons

    Type
    Blog Post
    Published
    Dec. 7, 2020, 2:53 p.m.
    ...bp target-site duplication (TSD), a hallmark characteristic of the Tn7-family of transposons. Insertion...(Fig. 3), multiplexed insertions into multiple distinct targets could be achieved (Vo et al., 2020). VchINT... editing. Leveraging a unique marriage between distinct biological elements, CRISPR-transposons excel ...
  15. CRISPR 101: Ribonucleoprotein (RNP) Delivery

    Type
    Blog Post
    Published
    Sept. 6, 2018, 12:02 p.m.
    ...to directly deliver a ribonucleoprotein (RNP), consisting of the Cas9 protein in complex with a targeting...PEG) mediated transfection of protoplasts and biolistic bombardment of immature embryos (Liang et al. ... to perform, often show low efficiency, while biolistic bombardment, which can have high efficiency, requires...
  16. CRISPR Antimicrobials

    Type
    Blog Post
    Published
    May 3, 2016, 2:30 p.m.
    ...recolonize the niche, reducing the chance of an opportunistic infection like for organisms like C. difficile...Yosef et al.’s proof-of-concept work targeted two distinct beta-lactam resistance genes, again with very ...PubMed Central: PMCID PMC4466736. 5. Ando, Hiroki, Sebastien Lemire, Diana P. Pires, and Timothy K. Lu. “Engineering...
  17. Interview: Hodaka Fujii on enChIP, New CRISPR Tools, and More

    Type
    Blog Post
    Published
    Dec. 2, 2014, 7:23 p.m.
    ...technologies. The locus-specific ChIP technologies consisting of iChIP and enChIP are recent examples. We also...University School of Medicine), Europe (Basel Institute for Immunology), and Japan (University of Tokyo...early research career. I've found that research institutes in different places have very different cultures...
  18. Fluorescent Proteins 101: Green Fluorescent Protein (GFP)

    Type
    Blog Post
    Published
    May 15, 2014, 3:33 p.m.
    ...Fluorescent Protein? GFP is a ~27 kDa protein consisting of 238 amino acids derived from the crystal jellyfish...A. Victoria and expressed in any organism while still maintaining fluorescence. The protein structure,...cytometry that separates mixtures of cells into distinct populations based on fluorescent signal. Thus,...
  19. Negotiating Work and Life: How to Find the Joy

    Type
    Blog Post
    Published
    March 20, 2014, 3:04 p.m.
    ...tactics to plan your work and make this happen. Be realistic and: Your co-workers will learn to work within...tasks – try to resist the impulse to control by insisting things always be done your way. Be patient with...help you do your job better. #8 Thou shalt enthusiastically foster independence Your partner can make ...
  20. Bacterial Toxin-antitoxin Systems as Molecular Biology Tools

    Type
    Blog Post
    Published
    Nov. 1, 2018, 12:35 p.m.
    ...plasmid due to improper plasmid partitioning, it will still inherit some toxin and antitoxin. However, the antitoxin... serves as a counterselectable marker in the destination vector. Successful cloning occurs when the ccdB...to apply this system as an orally administered diagnostic that can indicate the presence of liver metastasis...
Showing: 521 - 540 of 832 results