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Showing: 481 - 500 of 1041 results
  1. Comparing Cas9 to NgAgo: Can the Argonautes Best CRISPR?

    Type
    Blog Post
    ...Argonaute proteins are also present in prokaryotes, and some of these proteins protect against invading...reasons why you might choose NgAgo over CRISPR proteins Cas9 or Cpf1 - keep reading to learn more! Background...: Argonaute and NgAgo In eukaryotes, Argonaute proteins play an important role in RNA interference, binding...when the protein is being synthesized, so NgAgo remains faithful to its guide DNA and cannot switch guides...
  2. Another Pathway into Cells: iTOP

    Type
    Blog Post
    ...usage has been limited by technical problems. For instance, it’s much more difficult to introduce a gene ...strategy for transducing primary cells. What if, instead of supplying a DNA construct, they could simply... adapted from D’Astolfo et al. In certain instances, the potential benefits of nonviral transduction...with virus work. Fourth, working directly with proteins removes the limitations of packaging size associated...References Efficient Intracellular Delivery of Native Proteins. D'Astolfo DS, Pagliero RJ, Pras A, Karthaus WR...PubMed. Find the Plasmids @Addgene: iTOP-tested proteins and reporters Previous Protein Delivery Techniques...
  3. Fluorescent Protein Guide: In Vivo Imaging

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    Collection
    ... Plasmid Collections Fluorescent Proteins In Vivo Imaging Guide Fluorescent Proteins: In ...fluorescent proteins. Plasmid...protein interactions in living cells and live mice. Proteins for in vivo imaging have emission near or above... background signals. Near-infrared fluorescent proteins for in vivo imaging are derived from bacterial...
  4. CRISPR Plasmids - Cascade-Cas3

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    Collection
    ...boundary defined by anti-CRISPR proteins or running into other proteins bound to DNA, and the break can...Mammalian ID Plasmid Gene/Insert Promoter PI Publication Bacteria ID Plasmid Gene/Insert Promoter PI Publication...Publication Plant ID Plasmid Gene/Insert Promoter PI Publication Last reviewed on: January 30, 2025 Do you ...
  5. When Fidelity Matters: A frank discussion about ligase fidelity

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    Blog Post
    ...Tom, and Alan E. Tomkinson. "Eukaryotic DNA ligases: structural and functional insights." Annu. Rev. Biochem...many molecular biology protocols, including vector-insert joining for recombinant plasmid construction (restriction...DNA ligase, are naturally able to discriminate against ligating substrates containing base pair mismatches... can be achieved through a combination of the intrinsic selectivity of the ligase active site and careful...indicated that the optimal buffer for Taq DNA Ligase contains 100 – 200 mM KCl at pH 8.5. This optimization....6 (2004): 757-764. PubMed PMID: 15582400. 2. Tomkinson, Alan E., et al. "DNA ligases: structure, reaction...
  6. Revamp Your Lab Meetings With Creative Virtual Collaboration

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    Blog Post
    ...but can also be used to brainstorm on data in smaller groups, where for instance the presence of the PI...lab meetings with a focus on discussion and brainstorming Though, we might be forced to work from home...of each talk - time for free interaction and brainstorming. This could be achieved by asking each presenter...problem! You can still creatively collaborate and brainstorm! Image from Joseph Mucira.   Implement new... be written by several authors from different institutes, disciplines, and cultural backgrounds.” This...
  7. Improving Transduction Efficiency with Exosome AAVs

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    Blog Post
    ...accumulate inside the producer cells and purification protocols often describe a process that begins with cell... carried inside the vesicle, which may also contain other cellular molecules such as proteins or nucleic...cells also contain cellular macromolecules (e.g. proteins, nucleic acids) which possibly improve transduction... contexts, such as the delivery of therapeutic proteins to the brain which requires crossing the blood-brain-barrier...
  8. Creating accessible biology activities in schools with BioBits

    Type
    Blog Post
    ...freeze-dried, cell-free (FD-CF) components. Making proteins outside of a cell - cell free extracts Typically...transformation), essentially giving the cell all the instructions it needs to produce that green fluorescent protein...systems contain all the parts needed to produce proteins without the need to handle a living, replicating...simply need to add water to express a variety of proteins. FD-CF reactions are also cost-effective, as each...easily sense, whether that’s bright fluorescent proteins that they can see, enzymes that can convert certain...activities fit your lesson plans. If you are an instructor at the college level, perhaps consider using ...
  9. Plasmids 101: How to Verify Your Plasmid Using a Restriction Digest Analysis

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    Blog Post
    ...confirm the presence of an insert in a particular vector by excising the insert from the backbone. To do...use enzymes with restriction sites that flank the insert. You will need to know both the approximate size...vector backbone as well as the predicted size of the insert. You can search NCBI for YGOI to find the particular...right has a total size of 7.3kb, including a 1.2 kb insert. The plasmid was digested with 2 unique enzymes... and 1.2kb (red box), matching the backbone and insert, respectively. The results on the gel correspond...
  10. CRISPR Plasmids - Base Edit

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    Collection
    ...Plasmid Gene/Insert Promoter Selectable Marker PI Publication Bacteria ID Plasmid Gene/Insert Promoter Selectable...Plasmid Gene/Insert Promoter Selectable Marker PI Publication Yeast ID Plasmid Gene/Insert Promoter Selectable...Marker PI Publication Zebrafish ID Plasmid Gene/Insert Promoter Selectable Marker PI Publication Do you...
  11. Malate Dehydrogenase CUREs Community Collection

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    Collection
    ...They encourage instructors teaching different types of courses, at any type of institution, and at different...facilitates scientific collaborations between institutions. With these plasmids, faculty can begin a sustainable...subunit interface") ID Plasmid Description Gene/Insert Mutations Additional Resources MDH CUREs Community...External Collaboration Results in Student Learning Gains and Positive STEM Attitudes in CUREs. Callahan KP...
  12. Enabling Precision Functional Genomics with the Target Accelerator Plasmid Collection

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    Blog Post
    ...Associate Director of the Cancer Program at the Broad Institute of Harvard and MIT. The notion of cancer precision...We've developed a new plasmid toolkit, the Broad Institute Target Accelerator Plasmid Collection, that we...variant function and cancer phenotypes. Broad Institute Target Accelerator Plasmid Collections To overcome...this first challenge, we’ve developed the Broad Institute Target Accelerator Plasmid Collections, now widely...Associate Director of the Cancer Program at the Broad Institute of Harvard and MIT and is focused on making precision...Kits at Addgene Browse Plasmids from the Broad Institute ...
  13. Addgene’s Viral Service - Why Virus? Why Now?

    Type
    Blog Post
    ...Root from the Broad Institute and Alex Chavez from the Wyss Institute were instrumental in helping us establish...School, and Jonathan Ting’s lab from the Allen Institute have supported the AAV initiative from the beginning...Janelia Research Campus have provided valuable insight into AAV production. Finally, we are blessed to...permission from relevant plasmid depositors and their institutions to distribute viral preps derived from plasmids...
  14. Viral Vectors 101: Viral Vector Elements

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    Blog Post
    ...interact with the host. This is the role of Gag proteins: they contain the matrix, capsid, and nucleocapsid...assembly, and display. Pol, the last component, contains the reverse transcriptase and integrase components...convert the cargo from RNA to DNA and permanently insert the cargo into the host genome. Lentiviral-specific... Viral packaging and entry The viral packaging proteins for AAV are rep and cap. Rep is required for viral...discussed. LXs/Iva2 are primarily capsid assembly proteins required for packaging of the virus into particles...Resources Kulanayake, S., Tikoo, S. K. Adenovirus Core Proteins: Structure and Function. Viruses. 2021 13(3):388...
  15. Viral Vectors 101: Types of viruses

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    Blog Post
    ...proto-oncogenes and disrupt their expression (Robinson, 1982). To add insult to injury, retroviruses generally have...This viral DNA (also called proviral DNA) is then inserted into the host's genome and is used to make more...virus-specific elements such as the LTRs or structural proteins are not interchangeable between the two systems...Adenovirus generally has high immunogenicity, but some strains have been engineered to induce a lower inflammatory...immunogenicity low! References and Resources References Robinson HL. Retroviruses and cancer. Rev Infect Dis. 1982...
  16. Plasmids 101: Sequence and Ligation Independent Cloning (SLIC)

    Type
    Blog Post
    ...restriction enzyme cloning uses short sticky ends to insert genes into plasmid backbones, base pairing between...absence of the other dNTPs. Once the vector and insert are (separately) digested to create 10–12 base ...on the power of homologous recombination. SLIC inserts and linearized vectors must have homologous DNA...imprecise T4 digestion (no dNTPs needed), allows both insert and vector to be digested in the same tube. Alternatively...these approaches require higher concentrations of insert to succeed. 5′ overhangs are generated in the linearized... be used with different types of PCR-generated inserts. By harnessing the power of DNA repair, you can...
  17. Plasmids 101: Methylation and Restriction Enzymes

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    Blog Post
    ...if not methylated (if it comes from a phage for instance). Aside from restriction modification systems,...effectively cleave DNA. Common lab E. coli K12 strains such as DH5alpha contain 3 methylases that recognize...Dam or Dcm methylation, you can ensure this site remains unblocked by first cloning your DNA into a dam–...and re-purifying it. These specialized E. coli strains have been specifically engineered to be Dam and...those sites. Please keep in mind that dam-/dcm- strains may have an increased rate of mutation (as these...in mis-match repair functions of Dam), so these strains should not be used for long term storage. Additional...
  18. How to Keep a Lab Notebook for Bioinformatic Analyses

    Type
    Blog Post
    ...another name for a folder. For instance, your Desktop directory contains the folders and files that you...including background on other analyses that have inspired you to perform this analysis. Having a clearly...multiple projects in a given day. For example, instead of naming a file “output” name the file “1_output...subsequent word in a file name after the first word begins with a capital letter and words are not separated...temporarily used. Just be sure that the original code remains in tact! Take notes Comment in your scripts: ...
  19. Protein Tagging with CRISPR/Cas9: A Conversation with Mendenhall and Myers

    Type
    Blog Post
    ...small percentage of the proteins inside a cell have a commercial antibody against them. There’s also a question...Mendenhall of the University of Alabama in Huntsville explains it, a major goal in his laboratory is to understand...track down every last one of those gene regulatory proteins and the places in the genome where they can be.... If things work correctly, the second plasmid inserts a small epitope tag called FLAG at the end of the...
  20. Pooled CRISPR Libraries Offer Genome-Wide Control for Large-Scale Functional Screens

    Type
    Blog Post
    ...and control genes, but according to the Broad Institute's Silvana Konermann, the first generation of CRISPR-Cas9...recognized as an ideal spot to fuse the activators instead of at the protein’s C terminus. With that new design... and knew she was on the right track. The next insight was to assemble a synthetic transcription activation...complex consisting of multiple distinct effector domains that work together synergistically, modeled after...CRISPRa) sgRNA library uses the sunCas9 system and contains 10 sgRNAs for each transcription start site in...The transcriptional repressor (CRISPRi) library contains 10 sgRNAs for each transcription start site in...
Showing: 481 - 500 of 1041 results