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We narrowed to 735 results for: RAN-1

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  1. Plasmids 101: Cre-lox

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    ...techniques?  Let us know in the comments! References 1. Bacteriophage P1 site-specific recombination. I. ...A double-strand DNA break occurs within the core spacer of each loxP site and the two strands are ligated...maintained).  Translocation: If the sites are on separate DNA molecules, a translocation event is generated... expression – placing a series of transcriptional and translational termination features with loxP sites... pun) specific, targeted DNA modifications in transgenic animals, embryonic stem cells, and/or tissue-...that there is virtually no chance of it occurring randomly. Therefore, inserting loxP sites at deliberate...Inversion: If the loxP sites are on the same DNA strand and are in opposite orientations, recombination...
  2. Viral Vectors 101: Types of viruses

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    Blog Post
    ...Blood cells are not transduced efficiently with adenovirus and AAV.   Table 1: Types of viruses... Retroviruses are single-stranded RNA viruses that use reverse transcriptase to synthesize complementary...for most experimental needs, and can transduce (infect) a wide range of cell types with a high efficiency... such as a heterologous envelope or a post-transcriptional regulatory element can be used for either type...Adeno-associated virus (AAV) is a small, single-stranded DNA parvovirus. AAV can infect humans and some...response as retroviruses. This virus can also transduce dividing and non-dividing cells, making it conducive...issue. Adenovirus Adenovirus has a linear, double stranded DNA genome which is non-enveloped. It can infect...
  3. Hot Plasmids - March 2020 - base editors, GEVI, MoClo, and optogenetics

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    ...site. Figure 1: The base editor is split into two plasmids and co-transfected into cells for reconstitution...the co-transduction by two viruses would lower editing efficiency, the split editors transduced at levels...capacity of 4-5 kb limits the delivery of larger transgenes, such as base editors which have a gene size ...-opsin GEVIs. With an increase in the neuron’s membrane potential, Ace absorbance increases and results...promoters, CRISPRi parts, selectable markers, transformation acceptor vectors, and sequences for genomic...plasmids using the Cyanogate Kit and subsequent transformation into cyanobacteria. Image from Vasudevan et... evaluated CreLite for cell tracing using the transgenic zebrafish model, ubi:zebrabow. In this system...
  4. CasPEDIA: A Functional Classification of Cas Enzymes

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    ...and CasPEDIA have got you covered!     Fig. 1 – CasPEDIA Cas ID display information for a given ...Cas enzymes) cleaves both strands of its dsDNA target in cis and has no trans activity. AsCas12a, on the...cleaves ssDNA in trans. In sum, CasPEDIA documents the target substrate (DNA/RNA and strandedness) along with...Cas enzyme: Nuclease properties (CasID): Cis/trans activity, PAM requirement, gRNA, and multiplex ability...features: CasID CasPEDIA will display both the cis and trans activity of each entry. For example, SpyCas9a (one...can manually enter details to refine your search (trans activity, multiplex ability, gRNA design, etc.).....32942/X2C31F     Makarova, K. S., Wolf, Y. I., Iranzo, J., et al. (2019). Evolutionary classification...
  5. Visualizing Protein Turnover In Situ

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    ...her at [email protected]. References 1. Dieterich, Daniela C., et al. "In situ visualization and dynamics... has recently published techniques to follow translation in living single cells. However, before CRISPR-Cas9...the Max Planck Institute for Brain Research in Frankfurt am Main, Germany. She presented a novel technology...to be invited to learn from them at the MPI in Frankfurt am Main and perform similar experiments. Visualizing...Both antibodies have a short antibody specific DNA strand added to them. Only if the proteins of interest...are in close proximity to each other can the DNA strands take part in rolling circle DNA amplification. ...microscope she likes to travel, discover new restaurants, go to concerts and bake. you can contact her...
  6. Fluorescent CRISPR Reporters: SRIRACCHA and GEmCherry2

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    ...into the genome of mammalian cells.  Figure 1: The SRIRACCHA reporter construct. Image from Wen ...Wen et al., 2018). SRIRACCHA uses the Piggybac transposon to stably integrate a reporter gene that contains..., you’re ready to edit. These cells are then transfected with several different constructs for the reporter... gRNAs by simply changing the gRNA used when transfecting your cells.  A plasmid that contains Cas9. The...plasmid.  With this set up, all successfully transfected cells will express RFP while cells containing... Lastly, once a mutant is identified, the PB transposase can easily and seamlessly remove the integrated...Knudsen C, Ásgrímsdóttir ES, Rahimi K, Gill KP, Frandsen S, Hvolbøl Buchholdt S, Chen M, Kjems J, Febbraro...
  7. Viral Vectors 101: Viral Vector Elements

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    ...guide outlines these components.     Fig. 1 - Viral vector components of retrovirus  Adeno-associated...the delivered cargo (often a gene) is called the transfer plasmid while the other plasmids with packaging... or something similar, and is contained on the transfer plasmid. If expression is the goal, a promoter...Pol, the last component, contains the reverse transcriptase and integrase components to convert the cargo...other to allow DNA synthesis of the complementary strand to yield dsDNA. Unlike LTRs, ITRs are perfectly...delivered and expressed in the host cell from the transfer plasmid. Viral packaging and entry The viral packaging...the primary viral polymerase. E4/E1A activate transcription of other relevant viral genes (including the...
  8. Advice for Starting a Biotech Company from a Grad Student turned Entrepreneur

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    ...may begin to prove the technology. This transition takes around 1 – 2 years. The product is the measure...community. As a result, I have occasionally pondered translating my research into a startup company. However, ...school and turn it into a biotech company. Transitioning an idea from academia to a startup Mike Koeris... biotech startup, Mike explained, his career transitioned away from the bench and became all about finding...stages in the startup". To gain insight into "the random-walk" of a budding startup, I asked Mike to outline...into it.” Have any other helpful tips to help transition a project from academia to a biotech startup ...
  9. A Quick Guide to a Career in Software Product Management

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    ... UK team members before they log off for the day. 1:45 PM--Write final report. Work on a final report ...alone. A few years ago when I started my career transition from bench science to software product management...explaining more of her role, which eventually led me to transfer to her team and begin my product management (PM...science backgrounds, most did not. It was my job to translate complex lab operations workflows into a format... help improve their work. Then, I distill and translate that valuable information back to the rest of ...science companies, try to find internships with translatable skills: working with data, working with people...
  10. GCE4All: Making Genetic Code Expansion Accessible

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    ...non-canonical amino acid at the site of interest (figure 1). While the codon used is often one of the three stop...factors can negatively impact both translation and fidelity of translation, leading to system-wide effects... incorporation of an unnatural amino acid in translation (Noren et al., 1989). In the late nineties, this...non-interacting with) the cells’ own natural translation machinery; these are often incorporated into ...
  11. Summer SciComm: Preprints

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    ...medRxiv.org) in the past few years.   Figure 1: Stand aside, CERN — it's a new age of accelerating...conference poster or talk, or submitting patent or grant applications; to informal settings like lab meetings..., and increase their impact. Open access and transparency Another major benefit of preprints is their ... of listing “Submitted” articles in their CV or grant applications. A number of organizations (such as...be prone to biases or errors, with a lack of transparency in most review processes. Preprints and their...
  12. CRISPR Methods for Bacteria: Genome Engineering, CRISPRa, CRISPRi, Base Editing, and More

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    ...in Streptomyces (Cobb et al., 2015). pCRISPomyces-1 includes Cas9, a tracrRNA, and a CRISPR array, while... four major components including (1) a CRISPR RNA, (2) four proteins forming the QCascade DNA-targeting...modify a given gene. CRISPR-tranposons By combining CRISPR editing and transposons, the Sternberg and Zhang...developed CRISPR-transposons. The Sternberg lab's system called INTEGRATE (Insertion of Transposable Elements ... CAST (CRISPR-associated Transposase) both enable gRNA-directed transposition. INTEGRATE consists of four...multi-spacer CRISPR array, CRISPR-transposons can be multiplexed. Transcriptional repression (CRISPRi) in bacteria...proteins involved in the activation of transcription including transcription factors, phage proteins, and RNAP...
  13. The CRISPR Software Matchmaker: A New Tool for Choosing the Best CRISPR Software for Your Needs

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    ...first of only three such databases, EENdb (published 1 Jan 2013, no longer available), is a simple catalogue...follow him on Twitter @CMacPhD.          References  1. Ghorbal, Mehdi, et al. "Genome editing in the human...should we use all tools as some kind of a meta/Frankenstein app? Or perhaps there is a clear winner, is ...enthusiasts, take a look at sgRNAcas9. Top tools for transferring CRISPR technology to a new organism: For obvious...
  14. DAP arrays for multiplex gene editing

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    ... genes with a single viral vector.   Fig. 1: Schematic of multiplex gene editing with DAP array..., lengthy genetic payloads and insufficient transcription on the array have limited the scalability and...
  15. Four Factors that Differentiate the Stem Cell Field

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    ...regarding what makes this group of researchers special: 1. Stem cell scientists care deeply about ethics Ethics...that stem cell scientists are so focused on translational research is encouraging. Patients are key to...
  16. Giving gRNAs a Facelift - Synthetic and Beyond

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    ...incorporated at the termini of the crRNA molecule (usually 1-3 of the first 3 bps are modified) for optimal stability... 3’ end. This repeat region associates with the trans-activating crRNA (tracrRNA) which interacts with... important cellular RNA molecules with post translational modifications. One of the most common of these...targeting experiments allows you to visualize transfection efficiency and even track localization in cellular...
  17. Antibodies 101: Isotypes

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    ...region: IgM, IgD, IgG, IgE, and IgA.    Figure 1: Diagram of an antibody labeled with Fc, Fab, heavy...that helps attack extracellular pathogens.  Transportation of antibodies to places they can’t reach on...region, can be bound by special receptors that transport antibodies through cells and into different body...tears, saliva, mucus) where it protects mucosal membranes. This isotype is most commonly a dimer with a ...
  18. Stabilized Bacterial Promoters: Constant Gene Expression at any Copy Number

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    ...give these stabilized promoters a try. References 1. Segall-Shapiro, Thomas H., Eduardo D. Sontag, and...number during the transition to stationary phase, Segall-Shapiro et al. placed a trans-acting RepA protein...plasmids modified from pSC101 with copy numbers ranging from 3-100 per cell, a stabilized promoter buffered...
  19. Expanding the Targeting Scope and Editing Efficiency of Adenine Base Editors

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    ...speed: base editing before Cas lets go Figure 1: David Liu gives a talk at the Cell Symposia: Gene...induces the DNA base change without a DNA double-strand break. But base editors aren’t perfect. They may...References Gaudelli NM, Komor AC, Rees HA, Packer MS, Badran AH, Bryson DI, Liu DR (2017) Programmable base ...
  20. Sharing is Caring: But How to Distribute Open Hardware?

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    ...accessible to practically everyone.     Fig. 1: Open source hardware builds   Since I started...next few years, with the goal of creating more transparent and reproducible science in the long run (Hohlbein...2020) Hongquan Li, Deepak Krishnamurthy, Ethan Li, Pranav Vyas, Nibha Akireddy, Chew Chai, Manu Prakash, ...
Showing: 581 - 600 of 735 results