Skip to main content
Addgene
Open Menu

Enter a sequence to perform a BLAST-based search of Addgene plasmid sequence databases.

In Category

We narrowed to 527 results for: HA tag

Showing: 361 - 380 of 527 results

  1. Generating Mouse Models Using CRISPR/Cas9

    Type
    Blog Post
    ...mouse embryos as Cas9 from S. pyogenes and has the advantage of being smaller (Zhang et al., 2016). For...well if you’ve been following the Addgene blog, it has been repurposed for genome editing in eukaryotes,...than that, be nice to your microinjectionist, who has the strategically important job of delivering the...replacement of the murine sequence with a human gene. Advantages of using CRISPR for mouse genome engineering ...the efficiency discussed above extends 4 major advantages of CRISPR mouse editing when compared to more...Post for Tips on CRISPR Gene Editing in Mice Disadvantages of using CRISPR for generating mouse models ...

  2. Harnessing TnpB for Genome Editing: A Compact and Versatile Tool for Your Research

    Type
    Blog Post
    ... and allows targeting of specific cell types, it has a limited capacity to carry large DNA cargos. As ..., the search for smaller, compact genome editors has become a key focus in recent years. TnpB nucleases...nuclease domains (HNH and RuvC-like), and Cas12a has one (RuvC-like), TnpB also operates with a single...21 base pairs downstream of the TAM, creating staggered double-strand breaks like those created by Cas12a... like Cas9. This is where TnpB offers a clear advantage. At approximately one-third the size of Cas9 or...

  3. The PAM Requirement and Expanding CRISPR Beyond SpCas9

    Type
    Blog Post
    ...within the human genome. Another variant, xCas9 3.7 has 7 mutations found in the REC2, REC3, and PAM interacting...CRISPR toolbox The isolation of novel CRISPR proteins has and will continue to dramatically increase the number...additional targeting flexibility. Cas13a (formerly C2c2) has been adapted for targeted RNA cleavage in mammalian... MH, Tang W, Chen L, Sun N, Zeina CM, Gao X, Rees HA, Lin Z, Liu DR (2018) Evolved Cas9 variants with ...create a specific RNA editor. Cas13 enzymes are advantageous because they do not require a PAM, and RNA targeting...

  4. Transferable Skills Guide: Creativity

    Type
    Blog Post
    ...as a scientist has been building your creativity all along. In my own career, my team has used these techniques...and instead building an environment where everyone has their ideas heard.  So how can we assure that all...continue advocating for your idea. Our product team has implemented a policy of never rejecting an idea simply...plaguing the scientific community is supply chain shortages. When flasks, conical tubes or pipette tips are...

  5. Antibodies 101: Polyclonal Antibodies

    Type
    Blog Post
    ... - typically within 2-4 months. After the animal has the desired level of antibodies in its bloodstream...their batch to batch variability. Once an animal has undergone a terminal bleed to acquire all of its ...cross-reactivity. When to use polyclonal antibodies One advantage of polyclonal antibodies is that they are inexpensive...background staining (see next section), it may be advantageous if you are trying to detect a protein in low...research, monoclonal antibodies Learn about the advantages of using recombinant plasmid-based antibodies...

  6. Sequencing Options for CRISPR Genotyping

    Type
    Blog Post
    ...Further, Sanger sequencing has a lower detection limit of 50-20% (although this has been improved in some ...Joung 2016 with permission. Even though progress has been made with off-target prediction algorithms, ...Technique Sequence Information Detection Limit Advantages Disadvantages Mismatch Cleavage Assay Not Provided... Technique Detection Limit Application Advantages Disadvantages GUIDE-Seq 0.1% Cell-based  Searches ..., Yanfang, et al. "High-frequency off-target mutagenesis induced by CRISPR-Cas nucleases in human cells...

  7. Pairing CombiGEM and CRISPR for Combinatorial Genetic Screening

    Type
    Blog Post
    ...CombiGEM-CRISPR: The marriage of two simple platforms CRISPR has revolutionized how we decode the genome by making...guide RNAs (gRNAs) for genome editing in large-scale has led to the rapid generation of genome-wide gRNA libraries...the users’ specific research questions. CombiGEM has been successfully applied to functionally characterize...; Reverse oligo: 5’- AATTGXXXXXXXXGAATAGGTCTTCTCGAAGACCCAAACNNNNNNNNNNNNNNNNNNNC -3’, where NNN and XXX...

  8. Advice on Career Paths and the Green Card Process for International Researchers and Entrepreneurs

    Type
    Blog Post
    ...continue their careers in the United States. There has been a growing shift away from employers sponsoring...that the researcher is working under in the lab or has won, awards, media reports, and membership in groups...that you are a classically trained ballerina who has performed at Lincoln Center. Your case should only...only support tenure track professors. Casseus Law has seen that research institutions are willing to sponsor... your current research goal is and why your work has impacted your field (i.e. finding vaccines for deadly...The platinum standard for an expert is someone who has cited your work. Immediate steps that you can take...plan for and develop your career into a series of stages to refine and build skills overtime for success...

  9. Starter guide to induced pluripotent stem cells (iPSCs) part 1:  A renaissance in regenerative medicine

    Type
    Blog Post
    ...through to the morula stage are totipotent [2-4]. Pluripotency: When a cell has the ability to differentiate... of stem cell potency: Totipotency: When a cell has the ability to produce all of the differentiated ...therapeutic purposes. Both types have their advantages and disadvantages. Here is a table listing some of them... system which combined the advantages of both while limiting disadvantages led to the creation of induced... Induced Pluripotent Stem Cells: Problems and Advantages when Applying them in Regenerative Medicine. ...

  10. A Deep Dive into BioBuilder

    Type
    Blog Post
    ... receiving training modules in synthetic biology has grown into a recognized name in the field of STEM...logic gates. This BioBuilder-Caltech collaboration has resulted in a new BioBuilder book chapter and an ...recognized platform in March to exhibit projects at any stage of completion, from pitch to prototype. Last year...preparing local (Massachusetts), economically disadvantaged students for paid summer internships. A summer...

  11. Antibodies 101: Choosing the Right Isotype

    Type
    Blog Post
    ...a look at the secondary antibodies that your lab has on hand and choose a primary antibody that will work...secondary antibody pairing such that each target has a unique species or isotype that can be probed with...polyclonal primary antibodies.  I hope this post has explained when and why antibody isotypes matter and...isotypes and subclasses. They each have their own advantages. Since monoclonal antibodies contain a single...

  12. The Materials Science of Optogenetics Experiments

    Type
    Blog Post
    ...    In the video above, Channelrhodopsin 2 (Chr2) has been expressed in the motor cortex of a mouse. Upon...appropriate wavelength to stimulate your opsin. Each opsin has an excitation spectrum (use the resources discussed...controlled. As discussed above, each opsin variant has slightly different activation/inactivation kinetics...several groups [4, 5, 6]. These have the obvious advantage of not requiring patch cable connection to the...

  13. 7 Simple Strategies to Resolve Conflicts with Difficult Supervisors

    Type
    Blog Post
    ...your supervisor’s expectations Every supervisor has their own management style. A hands-on supervisor...agree with all of your ideas, but he or she probably has reasons for it. Do not take criticism personally ... of Finish Your Thesis, an online community that has supported thousands of graduate students since 2009...people: Hostile-aggressives, who are usually antagonistic and impolite, Complainers, who spend most ...

  14. Handling Plasmids from Addgene - Purifying Plasmid DNA

    Type
    Protocol
    ...buffer such as TE. You will now have plasmid DNA that has been purified away from the bacterial proteins and...DNA are denatured. Pro-Tip Do not vortex at this stage or the genomic DNA will become sheared and will ...

  15. Which Fluorescence Microscopy Technique is Best for Me?

    Type
    Blog Post
    ...establish for this to happen.Using red light has a second advantage: red light penetrates deeper into biological... to its unrivaled contrast, fluorescence imaging has emerged as the dominant light microscopy contrast...blue to excite a molecule of GFP. Because red light has approximately half the energy of blue light, two ...imaging depths closer to 1 mm. Traditionally, 2-photon has been a very slow imaging technique but recent advances... modern explosion in light microscopy techniques has provided biologists with a host of tools and opened...

  16. Advancing Biology with Zebrafish: Genetic Tools for Developmental Studies and More

    Type
    Blog Post
    ...deactivate specific genes are needed. Targeted mutation has been demonstrated in zebrafish using zinc-finger ... in all cells of the developing zebrafish embryo has been mapped using single cell RNA sequencing approaches...1990’s, two revolutionary large-scale random mutagenesis screens produced ~1,500 zebrafish mutants that...to study development and disease. Additional mutagenesis projects have since been initiated and today ...gene deactivation tools for zebrafish Random mutagenesis screens provided a major toehold into understanding... the one-eyed pinhead mutant from the random mutagenesis screens. Microscopy-based lineage tracing can...profiled 38,731 cells from 694 embryos over multiple stages and reconstructed the patterns of gene activity...

  17. CRISPR 101: Non-Homologous End Joining

    Type
    Blog Post
    ...HDR, NHEJ is active throughout the cell cycle and has a higher capacity for repair, as there is no requirement...ends interfere with that step. Accordingly, NHEJ has a vast toolbox of processing factors, including polymerases...Wyatt and Dale Ramsden, UNC at Chapel Hill. One advantage to using the CRISPR/Cas system for genome engineering...Persistence of a Chromosome Break Diminishes Its Mutagenic Potential. PLoS Genet 5:e1000683 . https://doi.org...

  18. Future of Research Conference - Remarkable Opening Session

    Type
    Blog Post
    ...keynote speaker, Dr. Henry Bourne (shown in photo), has been speaking out and writing about issues in our...the same time, he pointed out, academic research has some big problems resulting from past practices and...alternate training needs to be provided to take advantage of all the possible science careers. She advocated...

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

    Type
    Blog Post
    ... genes of interest into the chromosome. But this has its own set of problems. Rapidly dividing cells initiate...rounds of replication are initiated before the cell has divided. This means that genes located near the origin...growing slowly or quickly Growth media and growth stage can both affect gene copy number. Moreover, gene...References 1. Segall-Shapiro, Thomas H., Eduardo D. Sontag, and Christopher A. Voigt. "Engineered promoters...

  20. Gendered Innovations: Why Does Sex of the Cell Matter?

    Type
    Blog Post
    ... human suffering and death. Doing research right has the potential to save lives and money. A 2014 analysis...physiologic or pathologic processes. Much progress has been made in this area in recent years, and you can...important point, however, is that cost at this early stage of research is minimal compared to that of human...trials. And, as Janine Clayton points out, late-stage clinical studies that draw from a body of research...
Showing: 361 - 380 of 527 results