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Showing: 101 - 120 of 175 results
  1. Antibodies 101: Choosing the Right Isotype

    Type
    Blog Post
    Published
    April 6, 2023, 3 p.m.
    ... reduce the background staining (Table 2).      Table 2: Secondary antibody selections for a four-antibody...protocols that use antibody fragments to block the endogenous immunoglobulins and reduce the background staining...
  2. Components of CRISPR/Cas9

    Type
    Blog Post
    Published
    Feb. 2, 2016, 5 p.m.
    ...Without binding to the guide RNA, Cas9 cannot cut. 2. Bind to target DNA in the presence of a guide RNA...Cas9 genome editing systems use a non-specific endonuclease (Cas9 or closely related Cpf1) to cut the genome... have increased targeting specificity). Cas9 endonuclease functions While native CRISPR/Cas systems have...foreign DNA as well as the RNA guides required for endonuclease function, when used for genome engineering, ...the only CRISPR protein required is the Cas9 endonuclease or a variant thereof. This individual protein...) of a protospacer adjacent motif (PAM) Cas9 endonuclease binding to the target genomic locus is mediated...double-strand break (DSB) Cas9 and its variants have two endonuclease domains: the n-terminal RuvC-like nuclease domain...
  3. Plasmids 101: Using Transposons in the Lab

    Type
    Blog Post
    Published
    July 6, 2021, 1:28 p.m.
    ...somewhere else (Fig. 2). Class II TEs have LTRs on both of their ends.    Figure 2: Overview of DNA...has four major components: 1) a CRISPR RNA (crRNA), 2) four proteins (TniQ, Cas8, Cas7, Cas6) that forms...often terminate with a poly(A). ORF2 encodes endonuclease and reverse transcriptase activities.    ...
  4. CRISPR Activators: A Comparison Between dCas9-VP64, SAM, SunTag, VPR, and More!

    Type
    Blog Post
    Published
    Oct. 6, 2020, 1:15 p.m.
    ...gene activation, with some genes experiencing around 2-fold activation levels. Although other methods have.... This method has been shown to activate genes at 2- to 3-fold higher than SAM, SunTag, and VPR (Zhou ... dCas9, a CRISPR protein variant lacking its endonuclease ability, to bind to genes without editing the...
  5. Viral Vectors 101: Voltage Indicators

    Type
    Blog Post
    Published
    Jan. 30, 2024, 2:15 p.m.
    ...Indicators GEVIs can be divided up structurally into 2 main groups: voltage sensitive domains and Rhodopsin...depending on your experimental system.   Figure 2: General overview of chemigenetic tools. A genetically...physiologically relevant in neurons, myocytes, and endocrine cells. It follows that the specific targeting ...
  6. PITChing MMEJ as an Alternative Route for Gene Editing

    Type
    Blog Post
    Published
    Feb. 23, 2016, 3:30 p.m.
    ... PITCh vector via In-Fusion or SLIC cloning. Step 2: Design an insertion locus-specific gRNA The gRNA ...Find the plasmids from this publication at Addgene. 2. Dalvai, Mathieu, et al. (2015). “A Scalable Genome-Editing... level observed will be dependent on both the endogenous promoter and the 3’ UTR of the locus of interest...
  7. What's the Best Way to Elute and Store Your Plasmid DNA?

    Type
    Blog Post
    Published
    June 4, 2020, 1:22 p.m.
    ...elution choices: TE, Tris buffer, or water Figure 2: Tris-EDTA, Tris, or water? The buffer you choose ... from E. coli is the presence of the protein endonuclease I encoded by the gene endA. Nowadays, the most...introduced in the purification protocol to remove endonucleases activity. For these reasons choosing the correct...
  8. Antibodies 101: Validation

    Type
    Blog Post
    Published
    March 24, 2022, 1:15 p.m.
    ...another. You’ll need to validate that points 1 and 2 hold true under your specific experimental conditions...when (1) other strategies may not be feasible and (2) large-scale proteomic and transcriptomic datasets...that do not express your protein of interest endogenously and transfect them with a plasmid encoding your...ultimately planning to use your antibody to detect endogenous levels of the target in other cells or tissues...
  9. Antibody Validation for Flow Cytometry

    Type
    Blog Post
    Published
    Sept. 10, 2024, 1:15 p.m.
    ...types within a sample to expected labeling (Figure 2). The panel of antibodies used in this approach should...the antibody in the same tube.     Figure 2: Schematic showing the use of an orthogonal approach...detect the antigen of interest when expressed at endogenous levels (Laflamme et al., 2019). CRISPR-Cas9 approaches... since there can be large differences between endogenous expression and transfected overexpression, this...cannot confirm the antibody’s ability to detect endogenous levels of the target protein. It may only be ...overexpression. Additionally, if the cell line used has endogenous levels of expression, this can make the results...different antibody clones produced by different vendors. The specific epitope recognized by either antibody...
  10. Fluorescent Proteins 101: Fluorescent Protein Timers

    Type
    Blog Post
    Published
    May 4, 2017, 2:30 p.m.
    ...linear region to solve for total expression time. 2. Timer functionality with a single gene Although it...290.5496 (2000): 1585-1588. PubMed PMID: 11090358. 2. Tsuboi, Takashi, et al. "Age-dependent preferential...preferential dense-core vesicle exocytosis in neuroendocrine cells revealed by newly developed monomeric fluorescent...
  11. Deciphering the Mysteries of Behavior with Viral Vectors

    Type
    Blog Post
    Published
    Sept. 17, 2019, 12:40 p.m.
    ...of these neurons via the channel Channelrhodopsin 2 (ChR2) reduced glutamate transmission from the mPFC...deliver Cre-dependent expression of  Channelrhodopsin 2 (ChR2), a modified receptor protein that activates...antidepressants-like effects in rats." Psychoneuroendocrinology 46 (2014): 78-87. PubMed PMID: 24882160...
  12. Supporting Reproducibility with a Connected ELN

    Type
    Blog Post
    Published
    Jan. 17, 2019, 1:38 p.m.
    ... to: (1) prevent vendor lock in by making it easy to get data out of the ELN; and (2) facilitate inter-operability...connectivity to other data sources used in research; (2) connectivity to other tools used in research; and...
  13. Visualizing Protein Turnover In Situ

    Type
    Blog Post
    Published
    Jan. 16, 2018, 3:20 p.m.
    ...PMID: 20543841. PubMed Central PMCID: PMC2920597. 2. Nathans, Daniel. "Puromycin inhibition of protein...assay, primary antibodies directed towards two endogenous proteins of interests, suspected to interact,...take place if the two antibodies recognized an endogenous protein of interest that also had incorporated...possible to visualize specific newly synthesized endogenous proteins in situ. Now FUNCAT-PLA provides both...spatio-temporal information about the turnover of specific endogenous proteins in any cell type. Exciting! Many thanks...Ola, et al. "Direct observation of individual endogenous protein complexes in situ by proximity ligation...
  14. Inntags: Innovative Protein Epitope Tagging

    Type
    Blog Post
    Published
    Nov. 10, 2015, 3:30 p.m.
    ...tagging." Nature methods (2015). PubMed PMID:26322837. 2. Stadler, Charlotte, et al. "Immunofluorescence and...Plasmids 101 Series. Get the Inntag Plasmids Tag endogenous proteins with CRISPR Fluorescently Tag Your Protein...
  15. Understanding GPCR Signaling Using TRUPATH

    Type
    Blog Post
    Published
    Dec. 14, 2020, 2:15 p.m.
    ...dissociation by bioluminescence resonance energy transfer 2, or BRET2. With binding of the drug, the alpha and...coelenterazine, followed by the addition of the endogenous ligand or drug. In the inactive state, the luminescent...different GPCRs. This collection can be used to study endogenous ligands, the pathways they activate, as well ...
  16. Plasmids 101: The protein expression toolbox

    Type
    Blog Post
    Published
    Feb. 16, 2023, 7:05 p.m.
    ... the transcriptional level.     Fig. 2 Tetracycline on/off promoters and modes of action ...expression, you are almost certainly working with an endogenous locus. The most straightforward way to turn off...When transiently introduced, they can deplete endogenous protein levels for 1-3 days. There’s also a ...degradation. These systems work by tagging the endogenously or exogenously expressed protein with the relevant...However, if you would like tunable control of an endogenously expressed protein, then these systems need to...
  17. All in a Twist: dsRNA

    Type
    Blog Post
    Published
    Feb. 2, 2023, 2:15 p.m.
    ... release them into the cytosol. Fig. 2: Endogenous sources of duplexed RNA DNA:RNA hybrids ..., as is often the case upon viral infection. Endogenously produced dsRNA rarely reach this threshold and...sensors are mutated or mechanisms which suppress endogenous dsRNA formation are dysregulated, immune responses...mount in the absence of infection. Similarly, if endogenously synthesized dsRNA finds its way outside of the...
  18. 6 Tips for Analyzing and Troubleshooting Sanger Sequencing Results

    Type
    Blog Post
    Published
    June 26, 2014, 2:23 p.m.
    ...SnapGene Viewer (Mac/PC) FinchTV(Mac/PC) Chromas (PC) 2. You should see individual, sharp and evenly spaced...using a silica spin column available from several vendors. The precipitation method has an unfortunate side...
  19. A Practical Approach to Choosing the B(right)est Fluorescent Protein

    Type
    Blog Post
    Published
    June 1, 2017, 2:30 p.m.
    ...closely mimicking the future application. In figure 2 we provide an example of the comparison of the practical... is to tag an endogenous gene. By imaging cells (or tissues) that produce an endogenous protein tagged...employing co-expressing fluorescent proteins or using endogenous tagged genes) can be used to verify performance...
  20. Illuminating Choices: A Guide to Selecting Fluorescent Dyes and Ligands

    Type
    Blog Post
    Published
    March 21, 2024, 1:15 p.m.
    ... ligands can elicit varying degrees of β-arrestin-2 recruitment to receptors, indicating their agonistic...fluorescent labels. In Nature Methods (Vol. 19, Issue 2, pp. 149–158). Nature Research. https://doi.org/10.1038...a molecular species with high affinity for an endogenous molecular target, meaning the dye will be attached...results in direct binding between the dye and the endogenous target, and thus no genetically encoded tag is...
Showing: 101 - 120 of 175 results