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We narrowed to 730 results for: NSI

Showing: 321 - 340 of 730 results

  1. Stabilized Bacterial Promoters: Constant Gene Expression at any Copy Number

    Type
    Blog Post
    Published
    Sept. 4, 2018, 12:53 p.m.
    ...negative regulation by using a promoter that is responsive to a repressor protein, the increase in expression... of repressor protein also increases thereby intensifying repression of the gene of interest and keeping...the increase in plasmid copy number during the transition to stationary phase, Segall-Shapiro et al. placed...

  2. Hot Plasmids - March 2020 - base editors, GEVI, MoClo, and optogenetics

    Type
    Blog Post
    Published
    March 3, 2020, 2:15 p.m.
    ...red-shifted Ace-mScarlet, a fusion of a voltage-sensitive inhibitory rhodopsin (Ace2N) with the red fluorescent... Ace-mScarlet is a fusion between the voltage-sensitive inhibitory rhodopsin Ace2N and mScarlet. Ace2N...existing green-fluorescent GEVIs and blue-light-sensitive channelrhodopsins. Find the Ace-mScarlet voltage...

  3. Transferable Skills Guide: Cross-team Communication

    Type
    Blog Post
    Published
    Nov. 21, 2019, 1:53 p.m.
    ...using words for their field or technology in a consistent way. Just creating a lexicon was not enough. ... using the same words with the same meanings consistently, meetings will be shorter and more productive...during your postdoc that you enjoy and have a propensity for cross team communication, that’s an important...

  4. Plasmid Tools for Microbiome Studies

    Type
    Blog Post
    Published
    June 27, 2019, 12:25 p.m.
    ...sequencing and qPCR methods are too costly and time intensive to process a large number of microbiome samples...bumble bee and honey bee microbiome. The toolkit consists of modular parts that are assembled with Golden...microbial population dynamics in the gut can provide insight into how the microbiome responds to infection, ...

  5. Antibodies 101: Secondary Antibodies

    Type
    Blog Post
    Published
    Dec. 21, 2021, 2:15 p.m.
    ...antibody, this approach can greatly increase the sensitivity of an assay by increasing the number of signaling...place over multiple days. Increased run time is considered one of the major drawbacks of the indirect method...interest - the secondary antibody needs careful consideration before selection. If all the primary antibodies...

  6. Antibodies 101: Polyclonal Antibodies

    Type
    Blog Post
    Published
    July 14, 2021, 1:15 p.m.
    ...advantage of polyclonal antibodies is that they are inexpensive. Their short production time and the bulk purification...labs. Polyclonal antibodies also have a high sensitivity to the target protein due to their ability to...or fixation (IHC). Because of their increased sensitivity, polyclonal antibodies are particularly useful...

  7. Addgene's Tips for Plasmid Quality Control

    Type
    Blog Post
    Published
    Jan. 14, 2016, 3:30 p.m.
    ...that consistently receives around 200 new DNA samples every week. Here we will provide an inside look ...terminators. Detailed instructions on other factors to consider when designing your primers can be found here....

  8. Plasmids 101: Cre-lox

    Type
    Blog Post
    Published
    Jan. 13, 2015, 3:47 p.m.
    ...site-specific recombination events. The system consists of two components derived from the P1 bacteriophage...cyclization recombinase”), is a 38 kDa protein responsible for intra- and inter-molecular recombination ...sites are 34-base-pair long recognition sequences consisting of two 13-bp long palindromic repeats separated...

  9. Viral Vectors 101: Virus Safety

    Type
    Blog Post
    Published
    June 22, 2023, 1:15 p.m.
    ...article we will discuss general viral safety considerations and best practices for handling lab-grown viruses...replicate and continue the infection cycle once inside the host. While the virus can still enter (and ...into the host’s DNA. These viruses also have a propensity to integrate into proto-oncogenes, which can ...

  10. A Look at Addgene's QC Process

    Type
    Blog Post
    Published
    May 6, 2025, 1:15 p.m.
    ...significant plasmid elements. Which differences are considered a QC issue is reviewed yearly at a best practices...populations. All of these topics require additional considerations to resolve. Sequencing and assembly issues ...assembly in Geneious can still provide additional insights to resolve the assembly and determine if there...

  11. Hot Plasmids May 2018 - Optogenetics, Decaffeination, Biosensors, and Fluorescent Protein Tools

    Type
    Blog Post
    Published
    May 15, 2018, 12:43 p.m.
    ...faster assembly and disassembly dynamics, higher sensitivity to light, and better distribution of clusters...measure fluctuations of TagRFP-T fluorescence intensity due to interactions with photoactivatable fluorescent...By monitoring changes in TagRFP-T fluorescence intensity at different time points, the authors tracked ...

  12. CRISPR Activators: A Comparison Between dCas9-VP64, SAM, SunTag, VPR, and More!

    Type
    Blog Post
    Published
    Oct. 6, 2020, 1:15 p.m.
    ...Performance When targeting single genes, SAM consistently shows the highest levels of gene activation ...which are relatively large and are not expressed consistently throughout cells. VPR Description VPR fuses ... dCas9 to activate transcription. This complex consists of the VP64 activator used in other CRISPR activation...

  13. How to Prepare for an Industry Interview

    Type
    Blog Post
    Published
    July 9, 2020, 1:15 p.m.
    ...position, I just had a phone interview. I also transitioned between different lab groups without having ...that have lots of general questions about job responsibilities, performance evaluations, professional development...difficulties. Have your presentation on a flash drive and consider bringing your own laptop as a backup, if the company...

  14. Open Resources and Plasmid Tools For Studying C. elegans

    Type
    Blog Post
    Published
    July 18, 2019, 12:55 p.m.
    ...science and collaboration. The field already has comprehensive reference pages and curated databases for scientists... (CeNGEN) The CeNGEN goal is to establish a comprehensive gene expression atlas of every C.elegans  neuron...Scientists monitor the effects of RNAi using four-dimensional contrast interference (DIC) microscopy and computer...

  15. Antibodies 101: ELISA (Enzyme-linked Immunosorbent Assay)

    Type
    Blog Post
    Published
    Aug. 24, 2021, 1:15 p.m.
    ... this type of ELISA is extremely specific and sensitive to the target protein due to the use of multiple...concentrations of your protein of interest. The optical density (OD) - the measure of light absorbed by a solution...any experimental wells in that range of optical densities. If your standard curve does not have a linear...

  16. Hot Plasmids and Viral Preps - January 2021

    Type
    Blog Post
    Published
    Jan. 5, 2021, 2:15 p.m.
    ... publication, Mary Dunlop’s lab generated a photosensitive Cre, Opto-Cre-Vvd, by splitting and joining.... Opto-Cre-Vvd is precise, demonstrating low sensitivity to ambient light, and versatile as it can be ...be activated by both low and high-intensity blue light. Unlike other split-Cre systems which can take up...

  17. Illuminating Epigenetics with A FRET Based Biosensor

    Type
    Blog Post
    Published
    Nov. 19, 2015, 3:30 p.m.
    ...fluorescent in-situ hybridization, methylation-sensitive restriction enzyme digestion, DNA adenine methyltransferase...living cells. Essentially this reporter construct consists of one substrate (the histone-derived peptide)... of these sites was controlled, the reporter consistently showed significantly different FRET levels between...

  18. PhD Applications After COVID

    Type
    Blog Post
    Published
    Jan. 5, 2023, 2:15 p.m.
    ...in-person events change seemingly daily (and are inconsistent between universities!) This guide tells you ...to be incredibly useful, as it gives a more comprehensive idea of that advisor’s research interests which...program and faculty. Here are some questions to consider for your online meetings:  Is this department...

  19. Production of Virus in Insect Versus Mammalian Cells

    Type
    Blog Post
    Published
    Nov. 5, 2024, 8:32 p.m.
    ... your viral supernatant. Baculovirus replicates inside insect cells, and its lifecycle ends in cell lysis...equipment. Hopefully this post has provided some insight on these differences in viral production and will...versus insect cells for viral production Consideration Mammalian cells Insect cells Viruses AAV and...

  20. Pooled Library Amplifications

    Type
    Blog Post
    Published
    May 30, 2024, 1:30 p.m.
    ...and how will you ensure this?). You should also consider if there are any features of the library backbone...difficult to transform.    Figure 1: Factors to consider when creating a pooled library amplification protocol...BioRender.com.   The most important factor to consider is your desired library coverage, since this will...
Showing: 321 - 340 of 730 results