Skip to main content
Addgene

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

In Category

We narrowed to 553 results for: ESC

Showing: 21 - 40 of 553 results

  1. Fluorescent Biosensors for Measuring Autophagic Flux

    Type
    Blog Post
    Published
    Jan. 22, 2019, 2:41 p.m.
    ... to emission of only red fluorescence. The ratio of red to green fluorescence allows for clear distinction.../RFP ratio: a decrease in GFP fluorescence relative to RFP fluorescence suggests an increase in autophagic...flux, while an increase in GFP fluorescence relative to RFP fluorescence suggests a decrease in autophagic...photoconversion Light sheet fluorescence microscopy Resources on Addgene.org Fluorescent protein plasmids and...targeted for autophagy. The development of several fluorescent autophagy reporters now allows for the measurement...autophagy biosensor that’s comprised of two tandem fluorescent proteins: a relatively pH-insensitive RFP variant...neutral pH cytoplasm where it emits red and green fluorescence. Following the induction of bulk autophagy, ...

  2. Fluorescent CRISPR Reporters: SRIRACCHA and GEmCherry2

    Type
    Blog Post
    Published
    May 26, 2020, 1:15 p.m.
    ...in a change in the fluorescent readout. In this blog we will focus on two fluorescent CRISPR reporter methods...surpass GEmCherry2 in background fluorescence and in-frame fluorescence.  Figure 2: The GEmCherry...assays. Recently scientists have created CRISPR fluorescent reporter assays to quantify targeted Cas9 cleavage...enrich for mutants through the presence of a fluorescent reporter. Lastly, once a mutant is identified...at Addgene GEMCherry2, an improved monomeric fluorescent protein for assessing CRISPR/Cas9 activity Guide...but most are labor-intensive, require multiple fluorescent proteins, and aren’t that efficient. To overcome...Denham lab developed a modified monomeric red fluorescent protein (RFP), named GEMCherry2, that can rapidly...

  3. Deep Dive: Fixing and Permeabilizing for Immunofluorescence

    Type
    Blog Post
    Published
    Aug. 30, 2022, 1:15 p.m.
    ... months ago, we shared an introduction to immunofluorescence (IF) - a common method for visualizing molecules...1985) Postfixation detergent treatment for immunofluorescence suppresses localization of some integral ...Yong WH (2018) An Introduction to Performing Immunofluorescence Staining. Methods in Molecular Biology. Springer...Addgene blog: Antibodies 101: Introduction to Immunofluorescence Antibodies 101: Epitope Availability Antibodies...

  4. Which Fluorescent Protein Should I Use?

    Type
    Blog Post
    Published
    May 20, 2014, 2:06 p.m.
    ...Gal Haimovich of greenfluorescentblog. Be honest. Do you really know how fluorescent proteins glow?   ...the protein is non-fluorescent, thus allowing very low background level of fluorescence. Examples for such...Bimolecular Fluorescence Complementation (BiFC). 8 points to keep in mind when choosing a fluorescent protein...you, "Which fluorescent protein should I use?" And if you're looking for more fluorescence microscopy ...Interactive Visualization of Fluorescent Protein Properties  Fluorescence Spectrum Viewer  from BD bioscience...   Fluorescent Proteins (FPs) were first discovered over 50 years ago, with the discovery of the Green...Green Fluorescent Protein (GFP), a protein from the jellyfish Aequorea Victoria. Since that discovery, the...

  5. Choosing the B(right)est Fluorescent Protein: Photostability

    Type
    Blog Post
    Published
    June 8, 2017, 2:30 p.m.
    ...post in this series described a practical approach to selecting a bright fluorescent protein. In the second...desirable to have fluorescent proteins that are photostable. On top of photobleaching, fluorescent proteins may... the ideal situation, a fluorescent proteis should emit a stable fluorescence signal, showing no or little...power is a property of the fluorescent protein. This can differ between fluorescent proteins in the same spectral...measurements for different fluorescent proteins and by comparing how the fluorescence intensity changes over...results in a loss of fluorescence, which, in its simplest form, can be described by a mono-exponential...is often described by the t½, which is the time after which half of the initial fluorescence intensity...

  6. Quick Guide to Near-Infrared Fluorescent Proteins

    Type
    Blog Post
    Published
    Oct. 5, 2021, 1:15 p.m.
    ...College of Medicine. Several sets of near-infrared fluorescent proteins (NIR FPs) and biosensors have been created...Addgene. Biliverdin chromophore Near-infrared fluorescent proteins (NIR FPs) were derived from natural ...their molecular brightness (a product of the fluorescence quantum yield and the extinction coefficient... FPs are useful in vivo probes, due to low autofluorescence, low scattering, and deep penetration of red-shifted...reporters can tell us about cellular events via  fluorescence changes occurring due to protein synthesis, ...mammalian cells. dDetermined as effective NIR fluorescence in transiently transfected live HeLa cells with...supply of exogenous BV and after normalization to fluorescence of co-transfected EGFP. e Originally reported...

  7. FPbase: A new community-editable fluorescent protein database

    Type
    Blog Post
    Published
    May 16, 2018, 1 p.m.
    ... community fluorescent protein database As recognized by the 2008 Nobel Prize, fluorescent proteins (FPs...to Choosing the B(right)est Fluorescent Protein Choosing Your Fluorescent Proteins for Multicolor Imaging...all fluorescent protein plasmids Find plasmids for FRET Check out the Michael Davidson Fluorescent Protein...microscopist will tell you that selection of a fluorescent probe (be it an organic dye or FP) is one of ...comprehensive community resource for information about fluorescent proteins.  It was designed with the goal of encouraging...design (schema).  Registered users can submit new fluorescent proteins, add data to existing proteins when ...exactly what you’re looking for, the Table of Fluorescent Protein Properties provides a master list of ...

  8. Fluorescent Proteins 101: Visualizing Subcellular Structures & Organelles

    Type
    Blog Post
    Published
    June 22, 2017, 2:30 p.m.
    ...interest into a vector encoding a fluorescent tag. Once expressed as a fluorescent protein fusion, it is possible...associated with fluorescent imaging such as bleed-through (the incorrect detection of one fluorescent signal in...detectable. Visualization can be achieved using fluorescent microscopy - even in living cells and whole organisms...organisms. You can take advantage of the many Fluorescent Proteins (FP) available for microscopy, by cloning... to the wild-type protein visualized with a fluorescently-tagged antibody. By employing “marker proteins...best, though not always possible, to use inert fluorescent protein fusions to visualize subcellular structures...fused to a signal sequence that traffics the fluorescent protein to your organelle of interest. Click ...

  9. Choosing the B(right)est Fluorescent Protein: Aggregation Tendency

    Type
    Blog Post
    Published
    June 15, 2017, 2:30 p.m.
    ...posts in this series described a practical approach to selecting a bright fluorescent protein and a photostable...corals, the red fluorescent proteins form tetramers. In general, fluorescent proteins have a natural affinity...established true monomeric fluorescent proteins. Concluding remarks Many fluorescent proteins are available... Addgene Blog Which Fluorescent Protein Should I Use? Choosing Your Fluorescent Proteins for Multicolor... with Fluorescent Tags Find Plasmids for Subcellular Localization Browse the entire Fluorescent Protein...photostable fluorescent protein. In the third post of this series, we will discuss how to select a non-aggregating...-aggregating fluorescent protein. In the jellyfish Aequorea victoria, AvGFP forms a homodimer. In corals...

  10. A Practical Approach to Choosing the B(right)est Fluorescent Protein

    Type
    Blog Post
    Published
    June 1, 2017, 2:30 p.m.
    ... properties of fluorescent proteins, how to do a head-to-head comparison of fluorescent proteins and how...decision on the best fluorescent protein for your application. Selecting the best fluorescent protein for a ...daunting task. Many fluorescent proteins are available and the number of fluorescent proteins is steadily...properties of fluorescent proteins on websites. To make the best choice, the fluorescent protein properties...Brightness Brightness refers to the fluorescence intensity of a fluorescent molecule. A higher brightness increases...tables with fluorescent protein properties and provides a quick way to compare fluorescent proteins, e.g...plasmid containing a fluorescent protein (fusion) there is huge variation in the fluorescence intensities of...

  11. FlipGFP, a novel fluorescence protease reporter to study apoptosis

    Type
    Blog Post
    Published
    May 21, 2019, 12:10 p.m.
    ...caspase results in a change in fluorescence emission. FRET and fluorescence based reporters however have...necessary for fluorescence. When these parts are separated from each other, the protein cannot fluoresce. When...normal antiparallel position and fluoresce. FlipCherry: Red fluorescence protease reporter To add to the...Addgene blog Read our fluorescent proteins blog posts Download the fluorescent proteins 101 eBook Read....org Browse the fluorescent protein collection Find empty backbones for fluorescent protein fusions Browse...vivo, scientists have used genetically encoded fluorescent executioner caspase reporters. Several apoptosis...difficult to detect, and thus quantify, due to small fluorescence changes of the donor and acceptor after proteolytic...

  12. Bright Monomeric Fluorescent Proteins: mNeonGreen, mTFP1, and mWasabi

    Type
    Blog Post
    Published
    April 25, 2019, 3:01 p.m.
    ...deposit plasmids containing the fluorescent protein mNeonGreen. This fluorescent protein joins mTFP1 and mWasabi...mNeonGreen: a yellow-green fluorescent protein mNeonGreen is a yellow-green fluorescent protein that was derived...yellow fluorescent protein wavelengths, it can be imaged either with standard green fluorescent protein... other fluorescent proteins. Find mNeonGreen plasmids here! mTFP1: a monomeric teal fluorescent protein...proteins is that they are monomeric fluorescent proteins. Fluorescent proteins that oligomerize often affect...Clavularia cyan fluorescent protein: structural characterization and applications in fluorescence imaging." ...blog Read our fluorescent protein blog posts Find blog posts about choosing fluorescent proteins for your...

  13. Split Fluorescent Proteins for Studying Protein-Protein Interactions

    Type
    Blog Post
    Published
    May 3, 2022, 1:15 p.m.
    ...assemble the full structure of the fluorescent protein, producing fluorescent signal. Image modified from Feng...Identification of new fluorescent protein fragments for bimolecular fluorescence complementation analysis... protein of interest to each part of a split fluorescent protein (FP) and measure the signal produced ...This method is generally known as Bimolecular Fluorescence Complementation (BiFC). It can provide a qualitative...plasmid for your experiment.  Highlighted Split-Fluorescent Protein Tags Browse the table below, and click...from the associated paper:   Color Base FP Description Article PI Blue EBFP2 EBFP2(1-10) and Capri...

  14. Illuminating Choices: A Guide to Selecting Fluorescent Dyes and Ligands

    Type
    Blog Post
    Published
    March 21, 2024, 1:15 p.m.
    ...stability of fluorescence over time is crucial. For instance, the fluorescence of fluorescein isothiocyanate...the b(right)est fluorescent protein Fluorescent Proteins 101: A History of Fluorescent Proteins ...principles of fluorescent dyes/ligands Figure 1: Example structures of fluorophores, fluorescent dyes,...dyes, and fluorescent ligands. Figure created with BioRender.com. Fluorescence refers to the emission...can utilize these dyes. The most-used fluorescent dye is fluorescein isothiocyanate (FITC), with excitation...selection and optimization. Fluorescent experiment types: Different types of fluorescent experiments, such as... recommend specific fluorescent donors and acceptors in their product descriptions, or technical manuals...

  15. Choosing Your Fluorescent Proteins for Multi-Color Imaging

    Type
    Blog Post
    Published
    Oct. 9, 2014, 3 p.m.
    ...follow multiple fluorescently tagged species simultaneously. To do so with fluorescent protein labels ...in distinct fluorescent channels on the microscope. With the proliferation of fluorescent proteins in ...choice of fluorescent proteins requires some thought. The first step in choosing fluorescent proteins...is to be aware of what fluorescent proteins are available. With new fluorescent proteins being published...latest fluorescent proteins, I maintain an interactive graph and table of the best fluorescent proteins...available. Choosing compatible fluorescent proteins To choose a set of fluorescent proteins to be imaged together...crosstalk between the two fluorescent proteins. If you must image fluorescent proteins whose spectra overlap...

  16. Fluorescent Proteins 101: When GFP lets you down

    Type
    Blog Post
    Published
    Aug. 23, 2018, 12:05 p.m.
    ... a synthetic, fluorescent analogue have been engineered (Thorn, 2017). These fluorescent analogues are...of the available green fluorescent proteins emit light. The pKa of fluorescent proteins can be accurately...locations (Chen et al., 2013). GFP fluorescence overlaps with autofluorescence The cyan light that is used to...the use of bright red fluorescent proteins (e.g. mScarlet) or infrared fluorescent proteins (Chernov et.... Another solution to avoid autofluorescence is offered by bioluminescent proteins. These probes generate...the sample. Although bioluminescent probes are usually dim relative to fluorescent probes, recent engineering...Introduction to GFP Read our Fluorescent Proteins Blog Posts Download the Fluorescent Proteins 101 eBook Resources...

  17. Tagging Optogenetics and Chemogenetics Receptors: Fluorescent Proteins and Other Options

    Type
    Blog Post
    Published
    May 11, 2021, 1:15 p.m.
    ...that non-fluorescent tags may be advantageous over fluorescent proteins when the fluorescence is not essential...detection. Fluorescent proteins are most widely used tags because they emit endogenous fluorescence that allow...appropriate fluorescent illumination in in vivo, ex vivo, or post-mortem experiments. Fluorescent proteins..., we found that fluorescent proteins might not always be the best option. Fluorescent proteins can interfere...techniques cannot be directly visualized with fluorescence or immunohistochemistry methods, these proteins...fluorophore variants (for example green and red fluorescent proteins) allow simultaneous identification of...function Under some circumstances, the fused fluorescent proteins can be a roadblock, rather than an aid...

  18. Avoiding the Dark Side of Fluorescent Protein Fusions with mOX FPs

    Type
    Blog Post
    Published
    Oct. 27, 2015, 3 p.m.
    ... Posts on Fluorescent Proteins Browse Our Fluorescent Protein Pages Find the mOX Fluorescent Proteins ...dynamics of fluorescent protein fusions in live cells in real time. Previously, we have described a number...protein non-fluorescent. Unfortunately, accumulated misfolded and nonfunctional (dark) fluorescent proteins...applicable to many microscopy experiments with fluorescent proteins (FPs) localized to compartments other...that they have missed the impact of dark, non-fluorescent, and misfolded FP-fusions on quantitative imaging... and cell physiology in general. Pitfalls of Fluorescent Protein Fusions Observing a bright signal for... fail to correctly fold? Misfolded FPs do not fluoresce. A dark population is not readily apparent and...

  19. The Michael Davidson Collection: One-Stop Shop for Fluorescent Proteins

    Type
    Blog Post
    Published
    July 29, 2014, 6:16 p.m.
    ...Updated May 10, 2021. In the world of fluorescent proteins and their use for imaging cell biology, Michael...searchable format on Addgene’s Michael Davidson Fluorescent Protein Collection webpage. These plasmids are... 300 plasmid backbones spanning a rainbow of fluorescent proteins “It’s a great collection with over 300... the impressively big deposit. “He has every fluorescent protein under the sun, from the standard oldies...of interest isn’t in the ORF collection, the fluorescent proteins are, which makes mixing and matching...possibilities exponentially as far as new targets and fluorescent proteins are concerned.” For more information...fusions, see this blog post from Joachim Goedhart: Fluorescent Proteins 101: GFP Fusion Proteins - Making the...

  20. Fluorescent Proteins 101: GFP Fusion Proteins - Making the Right Connection

    Type
    Blog Post
    Published
    April 9, 2019, 1:13 p.m.
    ...oligomerization of fluorescent proteins is a concern. The propensity of fluorescent proteins to oligomerize...POI is at the C-terminus of the fluorescent protein. I prefer to describe the different parts of the fusion...of the fluorescent protein are relatively close together (figure 1). Where should the fluorescent protein...length, the specific fluorescent protein variant, and where to add the fluorescent tag. These choices will...dynamic range of fluorescent indicators for Ca2+ by circularly permuted yellow fluorescent proteins." Proceedings...Addgene blog Read our fluorescent proteins blog posts Download the fluorescent proteins 101 eBook Read....org Browse the fluorescent protein collection Find empty backbones for fluorescent protein fusions Browse...
Showing: 21 - 40 of 553 results