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Showing: 121 - 140 of 650 results
  1. Plasmids 101: Codon usage bias

    Type
    Blog Post
    Published
    Sept. 27, 2018, 1:09 p.m.
    ...completely understood, but some possible reasons include: Metabolic pressures - it takes cellular resources...when designing a full gene. A non-exhaustive list includes: Codon abundance relative to cognate tRNA abundance...insoluble, nonfunctional globs of protein known as inclusion bodies that will generally segregate with the ...assay to make sure your protein isn’t forming inclusion bodies and is folding properly. References 1...
  2. Important Considerations in Optogenetics Behavioral Experiments

    Type
    Blog Post
    Published
    Oct. 1, 2015, 2:30 p.m.
    ...but some examples I’m personally interested in include: intracranial self-stimulation (ICSS) and place...resolve these issues is with electrophysiology. Concluding thoughts and moving beyond the mouse While it...applicable to the rat [6]. Technical differences include the ferrule implants and patch cables. One huge... at the Rockefeller University.  His interests include the role of learning and memory in opioid addiction...
  3. Using AAV for Neuronal Tracing

    Type
    Blog Post
    Published
    Aug. 9, 2018, 1:04 p.m.
    ...episodic memory, a special type of memory which includes autobiographical events (see Jin & Maren, 2015...visualization of the morphology of individual neurons, including dendritic and axonal extensions and, most importantly...some engineering, RABV and HSV, but also others including pseudorabies virus type 1, vesicular stomatitis... Addgene's AAV guide)  Commonly used serotypes include AAV1 – 9, with most of these serotypes capable ...future developments in the field of AAV vectors. Conclusion An ideal comprehensive toolset for neuronal tracing...
  4. Fluorescent Proteins 101: When GFP lets you down

    Type
    Blog Post
    Published
    Aug. 23, 2018, 12:05 p.m.
    ...Several factors contribute to the popularity of GFP including (i) fast and complete maturation to functional...endogenous fluorescent co-factors can be used. Examples include the LOV domains that bind flavin (Buckley et al... conditions, with pKa values below 4. Examples include mTurquoise2 (pKa = 3.1), tagRFP (pKa = 3.1) and... or media. These sources of ‘autofluorescence’ include riboflavin in the medium or flavin containing proteins...
  5. Fluorescent Proteins 101: GFP Fusion Proteins - Making the Right Connection

    Type
    Blog Post
    Published
    April 9, 2019, 1:13 p.m.
    ...known as steric hindrance. For instance, GFP may occlude catalytic sites or obstruct binding sites or motifs...proteins that behave as monomers in mammalian cells include: mTurquoise2, mEGFP, mNeonGreen, mScarlet(-I), ...motif, which is needed for Golgi localization, is occluded and therefore this protein is mislocalized. The...that the fusion behaves well. But this is not conclusive evidence that the fusion operates in the same...
  6. Evolution of Brainbow: Using Cre-lox for Multicolor Labeling of Neurons

    Type
    Blog Post
    Published
    April 24, 2015, 2:39 p.m.
    ...works. Advances in Cre-lox recombination have included inducible Cre, such as the tamoxifen-responsive...mediate recombination.) The deletions are mutually exclusive, as either deletion removes one of the other loxP...immediately following the promoter. The STOP cassette includes a mutant YFP that does not fluoresce, but can ...More variants have been created by other labs, including R26R-Confetti described in Hugo J. Snippert, et...
  7. Sequencing Options for CRISPR Genotyping

    Type
    Blog Post
    Published
    Oct. 4, 2016, 2:30 p.m.
    ...for CRISPR genotyping. The most common options include mismatch cleavage assays, such as Surveyor™, T7E1...information profile regarding putative off-target sites including both the edit rate and the repair product sequence...algorithms do not take into account other elements, including those relating to DNA structure (e.g. epigenetic...options exist for unbiased off-target detection, including Digenome-seq (Kim et al. 2015) for in vitro analysis...
  8. Finding Your Science Policy Path

    Type
    Blog Post
    Published
    Sept. 22, 2020, 1:15 p.m.
    ...organizations in a variety of science policy roles including fellowships, volunteer positions, and part-time... with a large set of other societal pressures including economic, cultural, and political. Science policy...science blogs. Other avenues for skill development include leadership of extracurricular organizations, working...opportunities. NSPN maintains a great resource guide including conferences, societies, and outreach groups. Grab...
  9. Antibodies 101: Validation

    Type
    Blog Post
    Published
    March 24, 2022, 1:15 p.m.
    ... molecule at all, leading to inconclusive results, erroneous conclusions, and wasted time. In fact, many...antibody-dependent approach. Antibody-independent methods may include analysis of transcriptomic or proteomic data from...specifically to the expected protein. Common approaches include using RNAi to knock-down expression of your target...
  10. Fluorescent Proteins 101: Monitoring Cell Mobility Using Fluorescent Proteins

    Type
    Blog Post
    Published
    Aug. 15, 2017, 1:24 p.m.
    ...organism to make the complicated transition from a clump of cells to a fully differentiated body. In contrast...monitor cell interactions in diverse tissues, including lymph nodes, brain, liver, gut and skin. Two-...able to help answer using two-photon microscopy include: How do T cells and/or Neutrophils travel to the...probes when using a standard Ti:Sapphire Laser include: Blue-green fluorescent proteins like EGFP Yellow-orange...
  11. Antibodies 101: Introduction to Antibodies

    Type
    Blog Post
    Published
    Jan. 19, 2021, 2:15 p.m.
    ... Figure 1: Labeled diagram of an antibody including Fc, Fab, heavy chain, light chain, constant region...antibodies for experiments in a variety of fields including neuroscience and immunology. They can be used ...analyzed using techniques such as flow cytometry. Conclusion Whew! Now you know that antibodies can be used...used for. Addgene’s Antibody Plasmid Collection includes plasmids that express antibodies, nanobodies, ...
  12. Typing CRISPR Systems

    Type
    Blog Post
    Published
    March 18, 2025, 1:15 p.m.
    ... effectors and are the only CRISPR type that exclusively targets RNA. Cas13 has become a natural successor...CRISPR will likely depend on a variety of factors, including your goal, experience, hypothesis, and even the...keep increasing, as efforts using large-scale clustering and discovery algorithms find new candidates ...of rare CRISPR-Cas systems with deep terascale clustering. Science, 382(6673). https://doi.org/10.1126/...
  13. A Primer on Optogenetics: Introduction and Opsin Delivery

    Type
    Blog Post
    Published
    Sept. 10, 2015, 2:30 p.m.
    ...main experimental avenues (that are not mutually exclusive) commonly used in optogenetics: 1) electrophysiology....  Of course, proper controls are required and include, for example, confirmation of opsin expression ... brief, some standard opsins (see table above) include Channelrhodopsin2 (Chr2), a blue-light sensitive... at the Rockefeller University.  His interests include the role of learning and memory in opioid addiction...
  14. Participate in the Pets of Addgene Scavenger Hunt

    Type
    Blog Post
    Published
    April 1, 2021, 1:15 p.m.
    ... this scavenger hunt and the subsequent clue. (Begin with clue 1 below!) You will find five photos this... the blog. Below each photo, the pet gives you a clue to help you find the next picture. If you find the...
  15. CRISPR 101: Multiplex Expression of gRNAs

    Type
    Blog Post
    Published
    Sept. 10, 2020, 11:45 a.m.
    ...for plasmids suitable for other model systems, including E. coli, plants, Drosophila, and zebrafish!   ...destination vectors. Destination vector options include humanized wt Cas9, dCas9 (transcriptional repressor... Figure 3: Comparison of Multiplex Strategies including Standard PolIII-gRNA cassette, Csy4-cleavable ...filler sequences. You also have the option of including a previously-designed tyr gRNA, which causes hypopigmentation...
  16. CRISPR Cheat Sheet

    Type
    Blog Post
    Published
    Jan. 27, 2021, 2 p.m.
    ...new edition of the eBook includes the details on advances in CRISPR including: Base editing Prime editing...CRISPR Cheat Sheet here!   CRISPR Cheat Sheet Clustered Regularly Interspaced Short Palindromic Repeats...
  17. Plasmids 101: How to Name Your Plasmid in 3 Easy Steps

    Type
    Blog Post
    Published
    Feb. 13, 2014, 1 p.m.
    ...for plasmid. pXXXXX-XXXX Step 1: Backbone name Include the empty backbone name in your plasmid name. This...backbones, visit Vector Database. Step 2: Insert name  Include information about the insert in your plasmid name...contains a mutation or modification, this should be included in the plasmid name. Mutations are generally listed...
  18. The Addgene Antibody Data Hub

    Type
    Blog Post
    Published
    Sept. 12, 2024, 1:15 p.m.
    ...species, antibody species, or whether the results include knockout data.    Figure 2: Search options in ...description of the experiment. If that data was included in a publication, you'll find that information... is easy!  Here at Addgene, we love all data, including negative data, which can help researchers save...
  19. Prime Editing: Adding Precision and Flexibility to CRISPR Editing

    Type
    Blog Post
    Published
    Jan. 13, 2025, 9:49 p.m.
    ...the template. The PE3 system does just this by including an additional sgRNA. Using this sgRNA, the prime... number of unintended prime editing outcomes, including indels. Therefore, they engineered a dominant-...     ✓ ✓ reflects an innovation always included in the indicated tool. ~ reflects an innovation... strategies in our CRISPR guide. Some examples include: TwinPE: two prime editors make complementary ...
  20. What's New in CRISPR - May 2019

    Type
    Blog Post
    Published
    May 28, 2019, 12:49 p.m.
    ...per gene and includes ~10,000 gRNAs targeting intergenic regions. The libraries also include 2,400 gRNAs...recently deposited to Addgene and you’d like it to be included in the next What’s New in CRISPR blog post, please...
Showing: 121 - 140 of 650 results