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We narrowed to 1,046 results for: fer

Showing: 461 - 480 of 1046 results

  1. Twenty Years of Addgene Sharing: CRISPR

    Type
    Blog Post
    ...we used different categories (Figure 2C). Note that in Figure 2, the numbers on the X axis refer to distribution...previous Addgene CRISPR publications.  References and resources References Pyhtila, B., Kasowitz, S., Leeson...through the years.  Libraries are divided into different categories based on function: knockout (KO), activate...have CRISPR plasmids deposited from labs in ~40 different countries, and we’ve shipped CRISPR plasmids to...

  2. Chromoproteins: Colorful Proteins For Molecular Biology Experiments

    Type
    Blog Post
    ...chromoprotein and how is it different from fluorescent proteins? Before going into the difference between chromoproteins...research Read our Molecular Biology Reference Find plasmids for FRET References Blanquet RS, Phelan MA (1987...imaging microscopy-based Förster resonance energy transfer (FLIM-FRET) in living cells (Figure 4). They created... Jennifer Tsang...

  3. Golden Gate Assembly Upgrades: More Fragments, Faster Assembly, and Higher Fidelity

    Type
    Blog Post
    ...rely on two-step hierarchical approaches using different Type IIS restriction enzyme specificities at each...Factors such as enzyme efficiency, stability, and buffer compatibility have placed practical limits on single...Assembly test systems Our research focused on three different levels of assembly: High efficiency and accurate...biotechnological cloning efforts for over 50 years, prefers ligation of Watson-Crick base pair substrates, ...products to market, New England Biolabs, Inc.       References 1. Vladimir, Potapov, et al. "Optimization of...cloning protocols Check out our molecular biology reference pages ...

  4. AAV Vector Quality Control: Going the Extra Mile with NGS

    Type
    Blog Post
    ... Snapgene and Geneious software. References and resources References Chadeuf G, Ciron C, Moullier P, Salvetti...sequencing reads (~150 bp each) are aligned to the reference sequence of the plasmid used to create the viral...more than 90% of the reads should align to this reference sequence. Second, we perform a megaBLAST search...search on all the reads that did not map to the reference sequence. The resulting list of hits is then carefully...reads into longer DNA contigs without using a reference sequence. The five contigs with the most total...

  5. Fluorescent Proteins 101: Visualizing Subcellular Structures & Organelles

    Type
    Blog Post
    ... the protein within a living cell. Analyzing differences in protein localization and transport between...signals not visible to the human eye and are indifferent to subjective color intensity perception. Open...statistics that can be used to compare between different experimental setups. A colocalization analysis...one fluorescent signal in a channel setup for a different fluorescent signal) and photobleaching i.e. FP...molecules more closely is Förster Resonance Energy Transfer, FRET. Additional opportunities: Tracking intracellular...Markers of Subcellular Localization Poster here! References 1. Allen Institute Plasmid Pages 2. Cooper GM...

  6. Fluorescent Proteins 101: Fluorescent Protein Timers

    Type
    Blog Post
    ...but timer activity can be calibrated to these different conditions, enabling the use of a given timer ... of Neurog3 (a gene controlling pancreatic differentiation) in mouse embryos (Miyatsuka et al.) Distinguish... Let us know in the comments section below! References 1. Terskikh, Alexey, et al. ""Fluorescent timer...11090358. 2. Tsuboi, Takashi, et al. "Age-dependent preferential dense-core vesicle exocytosis in neuroendocrine...and Michael S. German. "Chronology of islet differentiation revealed by temporal cell labeling." Diabetes...programmable synthetic lineage-control network that differentiates human IPSCs into glucose-sensitive insulin-...

  7. CRISPR 101: Mammalian Expression Systems and Delivery Methods

    Type
    Blog Post
    ...be present in a single lentiviral transfer vector or separate transfer vectors. May contain reporter gene...outcomes can be most effectively achieved with different CRISPR components. Select the appropriate CRISPR...4.5kb). CRISPR elements are inserted into an AAV transfer vector and used to generate AAV particles. Transient...cell lines is quite broad and includes several different methods, so we've summarized some key features...should review the current literature about their preferred model.  If your expression system is not well ...

  8. Getting to Know Expansion Microscopy

    Type
    Blog Post
    ...the integrity of different targets and labels. You may want to check out a few different protocols to look...you’ve been looking for too!     References and resources References Bertiaux E, Balestra AC, Bournonville... two points within ~250 nm of each other. For reference, individual presynaptic terminals, which are jam...2020). Plus, it’s been demonstrated to work in different model systems, paired with SRM techniques, and...

  9. Droplet Digital PCR for AAV Quantitation

    Type
    Blog Post
    ...known quantities of DNA. Additionally, an AAV reference, a virus with a known titer, can be used to confirm...both results would be valid. This is why the AAV reference is critical. It allows you to determine if your... PCR (ddPCR) does not require a standard or a reference, meaning saving on reagents (and time)! AAV titering...million.  After making the dilutions, they are transferred to a new plate containing the mastermix which...generator, you will have to be careful about transferring your droplets from the droplet generator to ...becoming a popular option for PCR experiments.  References Furuta-Hanawa, Birei, Teruhide Yamaguchi, and...

  10. Deep Dive: Fixing and Permeabilizing for Immunofluorescence

    Type
    Blog Post
    ... as fixing and permeabilizing.  References and resources References Brown-Harding H (2020) Fixation artifacts...Formalin: You may also come across formalin, which refers to a saturated solution of formaldehyde (saturated...100, Tween-20, or saponin. Each detergent has different chemical properties that will impact the level...concentration.      Figure 2: Examples of different permeabilization strategies and when to use them...fixation; they require an additional step generally referred to as Antigen Retrieval. I chose not to get into...

  11. MXS Chaining

    Type
    Blog Post
    ... a nutshell, is the systematic combination of different genetic sequences into plasmid DNA. In high throughput... specific sequences of the genetic elements may differ (e.g., a set of various mammalian promoters), the...cloning can be used to combine the functions of different genetic elements to generate non-natural tools...assembling these modular types of constructs, and different methods are suited for particular downstream applications...Cloning Strategies Method Technology Pros Cons References Golden Gate Type II restriction enzymes Can...Kits at Addgene Find Plasmid Cloning Protocols References 1. Anderson JC, Dueber JE, Leguia M, Wu GC, Goler...

  12. CRISPR 101: Any Base Transversion Editors

    Type
    Blog Post
    ...) enzymes. Various other proteins included in different CGBE tools allow the researcher to direct the ...a translesion synthesis polymerase known to preferentially incorporate A bases across from abasic sites...recognize thymine (T) or cytosine (C). Several different teams succeeded with this approach around the ... gCBE is a deaminase-free C → G editor with a different editing window than existing CGBEs. This distinct...what tools the field will come up with next! References and Resources Glossary Here’s a quick refresher...respectively, to be replaced with another base. References Chen, L., Hong, M., Luan, C., Gao, H., Ru, G....

  13. How to Be an Excellent Trainee

    Type
    Blog Post
    ...mentor’: someone who provides career advice and offers direction on your scientific project. Your scientific...protocol you don’t understand the purpose of, or a different way of doing something then you’ve done previously...an active partner Everyone’s learning style is different, so let your mentor know what yours is! For instance...ask questions throughout training, while others prefer to review their notes, process what they’ve just... can also ask for a copy of the protocol if you prefer to take notes on a printed protocol, or maybe you... take training seriously, as reviewed above. Offer to help clean up and/or make necessary reagents ...

  14. What's Your Organism? Expanding Genomic Tools via the NSF EDGE Program

    Type
    Blog Post
    ...Genomic Tools) Program and I met scientists from 21 different labs who clearly also share this wonder of the...convergent evolution because electric organs arose in different branches of the evolutionary tree at least 6-7...cell line, then take the nucleus and put it in a fertilized egg to get edited embryos (replacing the nucleus...editing in the brain allows the squid to create a different protein. Did you know that most cephalopods die...behavior. For example, two similar species have very different social behavior. One is monogamous and one is ...new tools being developed and shared for many different organisms. Do you have a favorite organism you...

  15. Supporting Reproducibility with a Connected ELN

    Type
    Blog Post
    ...critically important to be able to conveniently reference specific pieces of data stored externally in the...of research compiled in the ELN. Without such references the record of research is incomplete, making ...research Just as researchers need to access and reference external data sources, they also need to continue...data from the ELN directly into at least one and preferably more than one of these five general purpose repositories...spreadsheets, images, sequencing data, etc.) used and/or referenced in the experiment. Since most ELNs, unlike data...produced, collected, and analyzed. While the many different ELNs out there can help with searchability, record-keeping...

  16. CRISPR-based Genome Editing Systems For Editing in E. coli

    Type
    Blog Post
    ...CRISPR-associated transposition.     References and Resources References: Jiang Y, Chen B, Duan C, Sun B, ...concatenations into crRNA arrays targeting multiple different sites in E. coli. pCutamp cures the plasmids by...MUCICAT toolkit includes versions of plasmids with different induction systems, such as PT7, Prha, Ptet, and...integration frequency. (C) Increasing rounds of transfer on transposition-inducing agar lead to higher ...Capability to construct a strain library with different gene dosages to facilitate swift optimization ...

  17. Analyzing CRISPR Editing Results with ICE from Synthego

    Type
    Blog Post
    ...Synthego has developed a new tool called ICE (Inference of CRISPR Edits) to solve this problem. This tool...efficiency and determine the profiles of all the different types of edits that are present and their relative...Contributions   The Contributions tab shows the inferred sequences present in your edited population and... an Indel plot (left panel) which displays the inferred distribution of indel sizes in the entire edited...average amount of signal that disagrees with the reference sequence derived from the control trace file. ...cut site, representing a high level of sequence difference. Traces The Traces tab shows the edited and ...

  18. pCXLE toolkit: Efficient episomal plasmid-based method to reprogram peripheral blood cells to iPSCs

    Type
    Blog Post
    ...colleagues reported that it is possible to reprogram differentiated cells into induced pluripotent stem cells (...original genome by integrating viral vectors are preferred. This is to avoid the chances of insertional mutagenesis...integration-free, karyotypically normal and are able to differentiate into various cell types of all three germ layers...https://www.linkedin.com/in/kmukherjeephd/.     References 1. El Hokayem, Jimmy, Holly N. Cukier, and Derek..., S., et al., LMO2-associated clonal T cell proliferation in two patients after gene therapy for SCID-...Interview with Darrell Kotton Four Factors that Differentiate the Stem Cell Field Sign Up to Write for the...

  19. Advanced Uses of Cre-lox and Flp-FRT - A Neuroscientist’s View

    Type
    Blog Post
    ...recombination between those sites. FRT sites and loxP sites differ at the nucleotide level but share an overall structure... Optimizing FLP FRT through smart engineering Different FLP versions – making FLP efficient The first ...efficiency to Cre (Kranz et al. 2010). These differences in recombinase efficiency are important to keep...inverted is flanked by two pairs of target sites that differ in their sequence. Recombination between the two...should be visualized at the same time from two different plasmids this approach becomes problematic as ...the genOway press release for more information. References 1. Atasoy, D., Y. Aponte, H. H. Su, and S. M....

  20. Streaking for Single Colonies: The Streak Plate Challenge

    Type
    Blog Post
    ...He mixed together 10 E. coli strains producing different pigments, and tasked the students to separate ...over 20 years. Previously, the lab used three different species for the challenge, but one species always...Addgene is have the students transform them into different strains of E. coli,” says Westenberg. During the...transformation experiment, he plans to show how different genetic backgrounds of the host strains affect... Jennifer Tsang...
Showing: 461 - 480 of 1046 results