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Showing: 321 - 340 of 855 results
  1. Chromoproteins: Colorful Proteins For Molecular Biology Experiments

    Type
    Blog Post
    Published
    Feb. 4, 2020, 2:15 p.m.
    ...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...
  2. Degrading DNA with Cascade-Cas3

    Type
    Blog Post
    Published
    Feb. 11, 2025, 2:15 p.m.
    ...subtypes of A–G, which come from different species and will have different compositions of Cascade. Although...degradative power in the future! References and Resources References Loeff, L., Brouns, S. J., & Joo, ... archaea. Class 1 is further broken down into different types, with Cas3 systems making up type I, the...effector. Type I has subtypes A through G, with different compositions of the Cascade complex. Created with...
  3. PRIDICT: Predicting Efficiencies of Prime Editing Guide RNAs

    Type
    Blog Post
    Published
    June 25, 2024, 1:15 p.m.
    ...focus on gene editing techniques. References and resources References Akhtar, W., De Jong, J., Pindyurin...means we could design hundreds to thousands of different pegRNAs for each desired edit, it simply becomes...many more. Once we had our datasets with all the different features and editing efficiencies, we could train...offline via GitHub. The model provides users with different designs of pegRNAs, ranked by their PRIDICT/PRIDICT2.0... predictive power is sometimes limited across different targets due to variations in chromatin context...
  4. Golden Gate Assembly Upgrades: More Fragments, Faster Assembly, and Higher Fidelity

    Type
    Blog Post
    Published
    Oct. 11, 2018, 12:30 p.m.
    ...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 ...
  5. Twenty Years of Addgene Sharing: CRISPR

    Type
    Blog Post
    Published
    April 18, 2024, 1:15 p.m.
    ...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...
  6. AAV Vector Quality Control: Going the Extra Mile with NGS

    Type
    Blog Post
    Published
    Sept. 12, 2017, 1:44 p.m.
    ... 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...
  7. CRISPR 101: Mammalian Expression Systems and Delivery Methods

    Type
    Blog Post
    Published
    Sept. 24, 2015, 2:30 p.m.
    ...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. MXS Chaining

    Type
    Blog Post
    Published
    Feb. 7, 2017, 3:30 p.m.
    ... 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...
  9. Droplet Digital PCR for AAV Quantitation

    Type
    Blog Post
    Published
    Jan. 16, 2020, 2:18 p.m.
    ...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. Getting to Know Expansion Microscopy

    Type
    Blog Post
    Published
    June 20, 2023, 1:15 p.m.
    ...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...
  11. Deep Dive: Fixing and Permeabilizing for Immunofluorescence

    Type
    Blog Post
    Published
    Aug. 30, 2022, 1:15 p.m.
    ... 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...
  12. Analyzing CRISPR Editing Results with ICE from Synthego

    Type
    Blog Post
    Published
    May 8, 2018, 1 p.m.
    ...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 ...
  13. pCXLE toolkit: Efficient episomal plasmid-based method to reprogram peripheral blood cells to iPSCs

    Type
    Blog Post
    Published
    Dec. 14, 2017, 2:08 p.m.
    ...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...
  14. How to Be an Excellent Trainee

    Type
    Blog Post
    Published
    Sept. 26, 2023, 1:15 p.m.
    ...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 ...
  15. CRISPR 101: Any Base Transversion Editors

    Type
    Blog Post
    Published
    April 1, 2025, 1:15 p.m.
    ...) 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....
  16. What's Your Organism? Expanding Genomic Tools via the NSF EDGE Program

    Type
    Blog Post
    Published
    May 2, 2019, 12:41 p.m.
    ...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...
  17. Supporting Reproducibility with a Connected ELN

    Type
    Blog Post
    Published
    Jan. 17, 2019, 1:38 p.m.
    ...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...
  18. CRISPR-based Genome Editing Systems For Editing in E. coli

    Type
    Blog Post
    Published
    April 13, 2021, 1:15 p.m.
    ...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 ...
  19. Advanced Uses of Cre-lox and Flp-FRT - A Neuroscientist’s View

    Type
    Blog Post
    Published
    Oct. 19, 2017, 1:54 p.m.
    ...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. PEI Calculator for Planning AAV Packaging Transfections

    Type
    Blog Post
    Published
    Jan. 23, 2018, 2:04 p.m.
    ...use the ratios below: 1 Transfer Plasmid : 1 pHelper: 1 RepCap OR 3 Transfer Plasmid : 5 pHelper: 2 RepCap...Calculations are based on using 28 μg of total plasmid (Transfer, helper, and RepCap added together) per 15 cm ...the calculator in the comments section below. References 1. Choi, Vivian W., et al. "Production of Recombinant...Resources on Addgene.org Find AAV Packaging and Transfer Plasmids Here New to Making AAV? Check out Addgene...
Showing: 321 - 340 of 855 results