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  1. Fluorescent Proteins 101: Photoactivatable Fluorescent Proteins

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    Blog Post
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    April 25, 2017, 2:30 p.m.
    ...Photoactivatable fluorescent proteins (PA-FPs) are fluorescent proteins that display unique changes in their spectral...et al. "EosFP, a fluorescent marker protein with UV-inducible green-to-red fluorescence conversion." Proceedings...Blog Read More about Fluorescent Protein Imaging Choosing Your Fluorescent Protein for Multi-Color Imaging...Fluorescent proteins (FPs) offer scientists a simple yet powerful way to tag cellular proteins and investigate...from low fluorescent states to high fluorescence states, they can change from one fluorescent color to...photoconvertible fluorescent proteins (PC-FPs). PC-FPs can convert from one fluorescent color to another...Selected Irreversible Photoactivatable Fluorescent Proteins Protein Oligomeric State Activating Light ...
  2. Fluorescent Proteins 101: History of Fluorescent Proteins

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    Blog Post
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    Aug. 7, 2017, 1:58 p.m.
    ..., as well as fluorescent ones, like Green Fluorescent Protein (GFP). These molecules occur naturally in...reach. Nobel Prize for fluorescent proteins The importance of fluorescent proteins was recognized in 2008...learning more about fluorescent proteins, I invite you to download our Fluorescent Protein eBook and learn...new green glowing protein could be used to measure gene transcription, as well as to track protein localization...the light they emit. Proteins that give off light include chemiluminescent proteins, like luciferases, .... The discovery of GFP The story of how fluorescent proteins like GFP came to be used as research tools... a ring that glows with a faint green light. To investigate this green glimmer, Shimomura collected many...
  3. Fluorescent Proteins 101: Green Fluorescent Protein (GFP)

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    Blog Post
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    May 15, 2014, 3:33 p.m.
    ...Bioluminescence and fluorescence from proteins such as Green Fluorescent Protein (GFP) has likely existed...applications in the lab. Why Green Fluorescent Protein? GFP is a ~27 kDa protein consisting of 238 amino acids...study protein-protein interactions. In this case, two portions of EGFP are fused to the proteins of interest... in fluorescent microscopy. Read More: All Plasmids 101 Articles Addgene's Fluorescent Protein Guide... green fluorescent protein...acting as a biosensor or cell marker, studying protein-protein interactions, visualizing promoter activity... Aequorea victoria. It has a fluorescent emission wavelength in the green portion of the visible spectrum...
  4. Fluorescent Proteins 101: Fluorescent Protein Timers

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    Blog Post
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    May 4, 2017, 2:30 p.m.
    ... Choosing Your Fluorescent Protein Resources at Addgene.org Find Fluorescent Protein Timers Browse All... All Fluorescent Protein Empty Backbones Check Out Our Fluorescent Protein Guide ...understand how protein localization changes over time.Hallmarks of fluorescent protein timers When FP...whether as part of protein fusions or expressed independently) originally fluoresce green or blue and, when...expressing a single FP-timer protein or protein fusion. This one protein method simplifies cloning and...Even before fluorescent proteins (FPs) came into wide use, there were a variety of ways to monitor cell...hybridization experiments. In many cases fluorescent proteins have usurped old methods or complemented...
  5. Bright Monomeric Fluorescent Proteins: mNeonGreen, mTFP1, and mWasabi

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    Blog Post
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    April 25, 2019, 3:01 p.m.
    ...yellow-green fluorescent protein mNeonGreen is a yellow-green fluorescent protein that was derived from...either with standard green fluorescent protein filters or yellow fluorescent protein filters, with no or...about these proteins is that they are monomeric fluorescent proteins. Fluorescent proteins that oligomerize...plasmids containing the fluorescent protein mNeonGreen. This fluorescent protein joins mTFP1 and mWasabi... Read our fluorescent protein blog posts Find blog posts about choosing fluorescent proteins for your ...Michael Davidson fluorescent protein collection Check out Addgene’s fluorescent protein plasmids and resources...termini. mNeonGreen was reported as the brightest monomeric green or yellow fluorescent protein at the ...
  6. Which Fluorescent Protein Should I Use?

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    Blog Post
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    May 20, 2014, 2:06 p.m.
    ...categories of fluorescent proteins Photoactivatable / Photoconvertible: These proteins can switch their...state of the protein is non-fluorescent, thus allowing very low background level of fluorescence. Examples... photoconvertible proteins are PA-GFP, Dendra2, and the mEOS proteins. Some proteins are reversibly switchable...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...sheets on many FP variants Plasmids 101: Green Fluorescent Protein (GFP) Three Review Articles on the Different...processes” Curr. Protein. Pept. Sci. 9(4):338. Chudakov et. al. (2010) “Fluorescent proteins and their applications...
  7. Rosella: A Fluorescent pH-Biosensor for Studying Autophagy

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    Blog Post
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    April 13, 2017, 2:30 p.m.
    ...Light Sheet Fluorescence Microscopy Additional Resources on Addgene.org Fluorescent Protein Plasmids and... and Resources Fluorescent Protein Guide: Biosensors Keima, another fluorescent pH-biosensor for studying...supernatant (this is indicative of protein degradation). To control for protein degradation due to other pathways...an active form of the protein. To monitor autophagy, the Pho8Δ60 mutant protein is expressed. Pho8Δ60 ...Australian parrot. It’s comprised of two tandem fluorescent proteins: a relatively pH-insensitive RFP variant... is the permanent fluorescent tag portion of Rosella: it will emit red fluorescence regardless of its ...cell. SEP’s pH sensitivity means Rosella will fluoresce green unless it’s in an acidic environment like the...
  8. Fluorescent Protein Travel Awards - Protein Variants, a Serotonin Sensor, and an Artificial Leaf Replica System

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    Blog Post
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    June 4, 2019, 1:02 p.m.
    ...inoculation, no more fluorescent proteins are made. As the bacterial replicate, fluorescent proteins will be diluted...use a suite of fluorescent reporters. Bacteria containing unstable fluorescent proteins under the control...and Roger Tsien played enormous roles in fluorescent protein development by openly sharing their resources...conference of their choice to share their fluorescent protein based research. This year, we put out another...excited to see the many creative uses of fluorescent proteins. We’re happy to announce the three winners...approximately 75% of all protein-coding pathogenic human variants are decreased in protein abundance, possibly... reduced eGFP fluorescence. Cells expressing the library are then sorted by fluorescence-activated cell...
  9. Seeing Red: Simple GFP Photoconversion

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    Blog Post
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    Aug. 4, 2015, 2:30 p.m.
    ...Addgene’s Fluorescent Protein Plasmids and Resources Relevant Blog Posts Plasmids 101: Green Fluorescent Protein...localization studies or make a reporter construct. Fluorescent proteins (FPs) are also the foundation of multiple... biological research. Photoconvertible fluorescent proteins Newly developed photoconvertible FPs like...allow one to monitor compartment/protein dynamics or evaluate protein turnover rate. In many cases, however... al., as well as a wide variety of other fluorescent proteins for your imaging needs. If you need an FP... WR, Menassa R, Hanson MR. Green to red photoconversion of GFP for protein tracking in vivo. Sci Rep. ... bright and photostable photoconvertible fluorescent protein. Nat Methods. 2009 Feb 6(2):131-3.  PubMed...
  10. Split Fluorescent Proteins for Studying Protein-Protein Interactions

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    Blog Post
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    May 3, 2022, 1:15 p.m.
    ...McNaughton mNeonGreen2 mNG2(1-10) and mNG2(11) Improved split fluorescent proteins for endogenous protein labeling...available to assess protein-protein interactions. One popular approach is to fuse a protein of interest to ... a split fluorescent protein (FP) and measure the signal produced when the candidate proteins’ interaction...assemble the full structure of the fluorescent protein, producing fluorescent signal. Image modified from Feng...Multiplexed labeling of cellular proteins with split fluorescent protein tags. Tamura R, Jiang F, Xie J,...Identification of new fluorescent protein fragments for bimolecular fluorescence complementation analysis...
  11. Choosing Your Fluorescent Proteins for Multi-Color Imaging

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    Blog Post
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    Oct. 9, 2014, 3 p.m.
    ... of fluorescent proteins requires some thought. The first step in choosing fluorescent proteins for ... be aware of what fluorescent proteins are available. With new fluorescent proteins being published every... 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...infrared fluorescent protein such as iFP1.4 or iFP2.0. Beware that these infrared fluorescent proteins require...with fluorescent proteins. With the right microscope and the right choice of fluorescent proteins, imaging...Clover is probably best; mNeonGreen is an even newer green fluorescent protein that is supposed to be extremely...
  12. CRISPRainbow and Genome Visualization

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    Blog Post
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    Feb. 28, 2017, 3:30 p.m.
    ...about Fluorescent Protein-Based Tools Learn Some of the Pitfalls When Using Fluorescent Proteins Control...Control Protein Activity with GFP Resources on Asddgene.org Find Fluorescent Protein Plasmids Find Fluorescent...Fluorescent Protein Kits Find Empty Backbones with Fluorescent Protein Tags ...vivo. Some researchers have used fluorescently tagged DNA-binding proteins to label certain loci, but this...represents the composite of fluorescent measurements from red, blue, and green channels overlaid on a bright-field.... Each ortholog was fused to a different fluorescent protein to create three distinct colors. The specificity...containing two hairpin sequences, which recruit fluorescent proteins BFP, GFP, and RFP fused to the respective...
  13. Tagging Optogenetics and Chemogenetics Receptors: Fluorescent Proteins and Other Options

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    Blog Post
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    May 11, 2021, 1:15 p.m.
    ...example green and red fluorescent proteins) allow simultaneous identification of more than one protein of ... found that fluorescent proteins might not always be the best option. Fluorescent proteins can interfere... in the expression of the protein of interest. The green fluorescent protein (GFP) and mCherry, two of...that non-fluorescent tags may be advantageous over fluorescent proteins when the fluorescence is not essential...fused to ‘tag’ or ‘label’ proteins to facilitate its detection. Fluorescent proteins are most widely used ...interfere with fused protein function Under some circumstances, the fused fluorescent proteins can be a roadblock...trafficking of the fusion protein (Kimple et al., 2013). We found that the fluorescent proteins can, indeed, interfere...
  14. New Norepinephrine Indicators: nLightG and nLightR

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    Blog Post
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    Dec. 12, 2023, 2:15 p.m.
    ...circularly permuted green fluorescent protein (GFP), and nLightR uses a red fluorescent protein, mApple. Kagiampaki...findings that red fluorescent proteins tend to be less sensitive than green fluorescent proteins. nLightR did...the Addgene blog Fluorescent proteins 101: Fluorescent Biosensors Which Fluorescent Microscopy Technique...Plasmids Find Optogenetics Plasmids Visit the Fluorescent Protein Guide Pages ...sensitivity and speed and were only available as green probes. The Patriarchi Lab aimed to overcome these..., J., & Li, Y. (2019). A Genetically Encoded Fluorescent Sensor for Rapid and Specific In Vivo Detection...S., & Steinegger, M. (2022). ColabFold: Making protein folding accessible to all. Nature Methods, 19(6...
  15. Antibodies 101: Multiplex Immunofluorescence

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    Blog Post
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    May 23, 2023, 1:15 p.m.
    ...where an antibody binds a target protein in your sample, then a fluorescently labeled secondary antibody binds...anti-GABA-AR β3 (green). (C) Hippocampus labeled with anti-Kv2.1 (magenta), anti-AnkyrinG (green), and Hoechst...suitable antibody against your target protein, consider fusing a protein tag to the target and using an epitope-based...reagents like fluorescently-labeled nanobodies or scFvs. Many, many options for fluorescently conjugated ...palette for display (like green-magenta-blue or orange-blue rather than red-green). Even better, show each...Antibodies Which Fluorescence Microscopy Technique is Best for Me? Introduction to Immunofluorescence Resources...then you use a microscope to see where the target protein is (localization) and how much there is (quantification...
  16. Viral Vectors 101: Calcium Sensors

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    Blog Post
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    Aug. 10, 2023, 1 p.m.
    ...indicators (GECIs) are fluorescent proteins linked to calcium binding proteins (e.g., calmodulin or troponin...CaMPARI. This sensor switches from green fluorescence to a red fluorescent state only by simultaneous (1) ...methods Many calcium reporters use a single fluorescent protein (FP), requiring only a simple measurement...Structure-and mechanism-guided design of single fluorescent protein-based biosensors. Nature chemical biology...Resources on Addgene.org Addgene’s AAV Guide Fluorescent Proteins: Biosensors Addgene’s Viral Services  ...troponin C). Their fluorescent readouts are used to monitor calcium concentrations and transients in living... of the sensor, and (3) subsequent change in fluorescence only occurs at high calcium concentrations. ...
  17. Avoiding the Dark Side of Fluorescent Protein Fusions with mOX FPs

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    Blog Post
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    Oct. 27, 2015, 3 p.m.
    ... Post on Protein Tags Read Other Posts on Fluorescent Proteins Browse Our Fluorescent Protein Pages Find...the untagged protein of interest. To avoid the accumulation of dark fluorescent proteins in your experiments...integral membrane proteins and membrane associated proteins (i.e. GPI-anchored proteins), which are more... JAIN, R., et al. "Oligomerization of green fluorescent protein in the secretory pathway of endocrine ...applicable to many microscopy experiments with fluorescent proteins (FPs) localized to compartments other than... cell physiology in general. Pitfalls of Fluorescent Protein Fusions Observing a bright signal for the... of the fusion protein molecules fail to correctly fold? Misfolded FPs do not fluoresce. A dark population...
  18. New Neuroscience Tool: The iGluSnFR3 Glutamate Sensor

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    Blog Post
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    April 7, 2022, 1:15 p.m.
    ... the Fluorescent Protein Featured Topic Page Resources at Addgene.org Find Fluorescent Protein Biosensors...other Fluorescent Biosensors A Practical Approach to Choosing the B(right)est Fluorescent Protein Visit...periplasmic glutamate binding protein known as GltI. When the resulting fusion protein binds to glutamate, conformational...Biosensors Browse All Fluorescent Proteins Find AAV Tools References Marvin, Jonathan S., et al. “An optimized...conformational changes lead to an increase in fluorescence intensity from the inserted GFP. After characterizing...expression levels in bacteria and produces stronger fluorescent signals upon sensing glutamate in mouse and ferret... different colors – blue (SF-Azurite-iGluSnFR), green (SF-iGluSnFR), and yellow (SF-Venus-iGluSnFR). iGluSnFR3...
  19. Live and Let Dye: Self-Labeling Protein Tags

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    Blog Post
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    April 16, 2024, 1:15 p.m.
    ... — a green fluorescent protein, a red fluorescent protein, a fancy new green fluorescent protein, some...tags on different proteins of interest (or one self-labeling tag and a fluorescent protein) enables applications...new-and-improved fluorescent protein you want to try, just swap in a new fluorescent ligand and see the...plasmids containing the same protein of interest tagged with different fusion proteins for different experiments...tags, another version with that same red fluorescent protein somebody made because they forgot it was ...Just express the fusion protein and add a specific ligand! A self-labeling protein gives you the flexibility...chemical dyes provide many advantages over fluorescent proteins, opening up new applications.   Figure...
  20. Fluorescent Biosensors for Measuring Autophagic Flux

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    Blog Post
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    Jan. 22, 2019, 2:41 p.m.
    ... to emission of only red fluorescence. The ratio of red to green fluorescence allows for clear distinction...mRFP-GFP-LC3 Tandem Fluorescent Protein, but following translation, this fusion protein is cleaved to generate...photoconversion Light sheet fluorescence microscopy Resources on Addgene.org Fluorescent protein plasmids and resources...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...can also be fused to a protein of interest to track the autophagy of that protein. Find the cytosol-targeted... variant at Addgene! mRFP-GFP-LC3 tandem fluorescent protein This autophagy biosensor contains mRFP and...
  21. The Fluorescent Vegetables in Aptamer Soup

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    Blog Post
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    Jan. 29, 2019, 2:27 p.m.
    ... selection of an RNA mimic of green fluorescent protein by fluorescence-based selection and directed evolution... applications of fluorescent RNA aptamers in Addgene’s collection. Green fluorescent aptamers Spinach ...activity of highly efficient RNA mimics of green fluorescent protein." Nature structural & molecular biology...small molecule activates the fluorescence of the small molecule. Fluorescent RNA aptamers are used to track...localization of the complex. Broccoli, the other green fluorescent aptamer, was identified through directed evolution... Resources at Addgene.org Browse fluorescent protein plasmids and resources See all Jaffrey lab plasmids...using aptamers might know this best, as most fluorescent aptamers are named for a fruit or vegetable! ...
  22. Download Science-Themed Zoom Backgrounds from Addgene

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    Blog Post
    Published
    April 22, 2021, 1:15 p.m.
    ...interested in our fluorescent protein background. Download the orange fluorescent protein background.     ...not, you might want to check out Addgene’s Fluorescent Proteins blog topic to learn more about FRET and ...ready-to-use AAV and lentiviral preps! Download the green AAV background.       Some of our lentiviral plasmids...pooled barcoding libraries, and more. Download the green virus background.           Maybe your viral research...organism, research technique, and more. Download the green DNA background.     Since we ❤️ DNA at Addgene,...
  23. Creating accessible biology activities in schools with BioBits

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    Blog Post
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    Aug. 2, 2018, 12:56 p.m.
    ...separate DNA or transforming cells with green fluorescent protein, these activities are limited to those...say green fluorescent protein – you first need the DNA sequence that encodes it. That DNA sequence then ...instructions it needs to produce that green fluorescent protein through transcription and translation....Making proteins outside of a cell - cell free extracts Typically, if you want to make a protein – say ... can easily sense, whether that’s bright fluorescent proteins that they can see, enzymes that can convert... live cells. The alternative is to express the protein in a cell-free manner. This is like taking an engine...systems contain all the parts needed to produce proteins without the need to handle a living, replicating...
  24. Fluorescent Proteins 101: When GFP lets you down

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    Blog Post
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    Aug. 23, 2018, 12:05 p.m.
    ...of the available green fluorescent proteins emit light. The pKa of fluorescent proteins can be accurately...use of bright red fluorescent proteins (e.g. mScarlet) or infrared fluorescent proteins (Chernov et al.,...Structural Dynamics of Green Fluorescent Protein Fused with a Single Chain Fv Protein." Journal of Biological...Introduction to GFP Read our Fluorescent Proteins Blog Posts Download the Fluorescent Proteins 101 eBook Resources... Browse the Fluorescent Protein Collection Find empty backbones for fluorescent protein fusions Browse...co-factor binding proteins, systems wherein a protein binds a synthetic, fluorescent analogue have been...for another protein. Effectively, it equips the protein of interest with an additional protein module that...
  25. Fluorescent Proteins 101: Monitoring Cell Mobility Using Fluorescent Proteins

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    Blog Post
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    Aug. 15, 2017, 1:24 p.m.
    ...many fluorescent proteins. Additional fluorescent protein tools Photoactivable fluorescent proteins (proteins...include: Blue-green fluorescent proteins like EGFP Yellow-orange fluorescent proteins like TagRFP, tdTomato...Choosing Your Fluorescent Protein Learn Some of the Pitfalls of Working With Fluorescent Proteins Use FRET ...Monitor Protein-Protein Interactions Resources on Addgene.org Check out Our Fluorescent Protein Guide ...the visualization of fluorescent proteins expressed in the specimen.  2. Fluorescence Activated Cell Sorter...using cells labelled by fluorescent chemicals or by other fluorescent proteins, labs were also able to...that fluoresce after a light-induced chemical reaction) or photoconvertible Keade proteins (protein that...
  26. Fluorescent Proteins 101: Luciferase

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    Blog Post
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    June 24, 2014, 3:59 p.m.
    ...occurs slower than fluorescent-based methods, such as excitation of Green Fluorescent Protein (GFP) because...reporters are generally less bright than fluorescent proteins, but have the advantage of lower background...luminescence versus fluorescence.  Table 1: Properties of Luminescence versus Fluorescence   Luminescence...bioluminescent reporter. This beetle emits a yellow-green light with a peak emission at 560nm. Shortly after...Luciferase Can Be Used In Concert with Fluorecent Proteins in Nano Lanterns Reporter gene assays A reporter... within cells, where detection of the reporter protein or its enzymatic activity is measured. The effect...Luminescence Fluorescence Source of Emitted Photons Chemical reaction High-energy photons Kinetics of Photon...
  27. Fluorescent Proteins 101: Introduction to FRET

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    Blog Post
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    June 27, 2017, 1:03 p.m.
    ...Atsushi, et al. "Fluorescent indicators for Ca2+ based on green fluorescent proteins and calmodulin." ... Out Fluorescent Protein Biosensors Browse the Entire Fluorescent Protein Collection ...emission by fluorescence. The widespread use of FRET with fluorescent molecules, including fluorescent proteins..., et al. "Fluorescent protein based FRET pairs with improved dynamic range for fluorescence lifetime measurements...permutation and receptor insertion within green fluorescent proteins." Proceedings of the National Academy...overwhelming given the large assortment of fluorescent proteins available. Fortunately, several excellent.... 2. Bajar, Bryce T., et al. "A Guide to Fluorescent Protein FRET Pairs." Sensors 16.9 (2016): 1488. PubMed...
  28. Chromoproteins: Colorful Proteins For Molecular Biology Experiments

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    Blog Post
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    Feb. 4, 2020, 2:15 p.m.
    ... like chromoproteins, fluorescent proteins, and luminescent proteins. While fluorescent proteins and luminescence..., the widely used green fluorescent protein (GFP) gives a bright green fluorescence when exposed to blue...whereas chromoproteins do not fluoresce at all or fluoresce at very low levels. Chromoproteins in nature...inquiries.  What is a chromoprotein and how is it different from fluorescent proteins? Before going into ...into the difference between chromoproteins and fluorescent proteins, it’s important to note that despite ...distinction by name, chromoproteins are actually a subset of the fluorescent protein family. What sets them...to the history of fluorescent proteins in molecular biology research, chromoproteins have a shorter history...
  29. Visualizing Genomic Loci with CRISPR-Sirius

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    Blog Post
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    April 18, 2019, 12:53 p.m.
    ... 2015). To do so, they fused a different fluorescent protein to various Cas9 variants, SpCas9, NmCas9,... or boxB) that each recruits a different fluorescent protein (BFP, GFP, or RFP) to the genomic loci of...MS2-PP7) showing recruitment of different fluorescent proteins. (B) CRISPR-Sirius used to visualize relative...blog Download our CRISPR eBook Learn about fluorescent protein-based tools Read all CRISPR blog posts Resources...The catalytically dead Cas9 protein (dCas9) is well known for its ability to bind DNA targets without...hairpins within one gRNA will result in a blue, green, or red readout. But gRNAs containing two different...sequences inserted into the sgRNA generates blue, green, or red colors for labeling. A combination of MS2...
  30. When is a Monomer not a Monomer? The Top Three Ways Your Favorite Fluorescent Protein Oligomerizes in Cells

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    Blog Post
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    April 19, 2016, 2:30 p.m.
    ...artifacts. If you're using green fluorescent protein or Enhanced Green Fluorescent Protein (GFP/EGFP) for a transcriptional...problem with dimerizing fluorescent proteins is illustrated. 1) Membrane proteins fused to FPs that dimerize....   1. Transmembrane fluorescent protein fusions Transmembrane proteins, i.e. receptors and transporters...However, if you fuse your protein of interest (POI) to GFP to study the protein's behavior in cells, in solution...means that your POI fused to GFP or another fluorescent protein (FP) could be forming dimers in cells. Why...interact. A protein with a nanomolar Kd will exist primarily as a dimer in cells while a protein with a high...lead to polymerization of the fusion protein. A dimeric fusion protein will have two FP binding domains forming...
  31. Hot Plasmids - March 2020 - base editors, GEVI, MoClo, and optogenetics

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    Blog Post
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    March 3, 2020, 2:15 p.m.
    ...when paired with appropriate fluorescent optics. Existing red fluorescent voltage indicators, however,...inhibitory rhodopsin (Ace2N) with the red fluorescent protein (mScarlet) with either a seven or eight amino...manipulations when combined with existing green-fluorescent GEVIs and blue-light-sensitive channelrhodopsins...zebrabow. In this system, cells express various fluorescent proteins controlled by Cre recombination. Each cell...of colors depending on the combination of fluorescent proteins expressed. CreLite-mediated recombination...editors that can be reconstituted in vivo to form a protein identical in sequence to the unmodified enzyme....31937940. Detection of neural activity using a red fluorescent genetically encoded voltage indicator Article...
  32. Lighting Up Cell Signaling with Photoswitchable Kinases

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    Blog Post
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    July 25, 2017, 1:20 p.m.
    ...Photoactivatable Fluorescent Proteins Control Protein Expression with Cre-lox Control Protein Activity with...blocking the active site. Dronpa also produces green fluorescence when exposed to 500 nm light.  Under 400 ... other kinases and proteins. Zhou et al suggest that more photoswitchable proteins could potentially be... reporter plasmids Find photoactivatable fluorescent proteins in empty backbones in the Michael Davidson...Photoswitchable Fluorescent Proteins ... fluorescent proteins...transduction pathways are a lot like cell phone networks. Protein kinases deliver messages to the next members of...
  33. RUBY-Red Siliques

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    Blog Post
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    March 1, 2022, 2:15 p.m.
    ...categories: antibiotic/herbicide resistance and fluorescent proteins. Selection using resistance genes usually...would only then kill the desired plants! PCR or fluorescent markers are currently used in these situations...But ¼ of the offspring from these plants will be green, containing the desired mutation but lacking both...the mutation. I will be able to easily choose the green seedlings that don’t have the transgene and save...plant is a pale pink in transparent tissues, or in green tissues is slightly darker or slightly brown. Photos...could be achieved much easier than by PCR or a fluorescent microscope. First, red CRISPR-positive transformants... to be removed to prevent further editing, then green offspring can be selected instead of red ones. Other...
  34. Photosensitizer Induced Cell Ablation with FAP-TAP MG-2I-dL5**

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    Blog Post
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    Sept. 19, 2017, 1:20 p.m.
    ...encoded red fluorescent photosensitizer protein that generates ROS when illuminated with green light. They...two parts: 1) an activatable protein (the FAP - fluorogen activating protein - dL5** in this case), and ...this case). The fluorogen is not fluorescent until it binds its protein partner thus forming the full FAP-TAP...suggests that it could be used with these fluorescent proteins. He et al also compared MG-2I-dL5** head-to-head...Optogenetics Blog Posts Sign Up to Receive the Fluorescent Protein eBook Learn about Small Molecule Fluorophores...Fluorophores Resources on Addgene.org Visit Our Fluorescent Protein Guide Page Check out MiniSOG2 and SuperNova...you can do just that.  Photosensitizing dyes and proteins have been around for awhile (check out this review...
  35. Technologies Enabled by NanoLuc® Luciferase

    Type
    Blog Post
    Published
    Feb. 8, 2018, 12:17 p.m.
    ...biosensors. NanoLuc®-fluorescent protein fusions for imaging Fluorescent proteins are fantastic imaging... penetrative orange fluorescent protein fusion (OgNLuc). Both fluorescent proteins can be excited by Nluc...of a responsive protein (e.g. calcium binding protein) fused to two fluorescent proteins. When the responsive...transfer of energy from one fluorescent protein to a compatible fluorescent protein. FRET can be measured by...Luciferase Plasmids Browse the Fluorescent Protein Collection Find Fluorescent Protein Biosensors ...NLuc to fluorescent proteins to make better reporters and the second couples NLuc to fluorescent proteins...One consists of NLuc fused to enhanced green fluorescent protein (GpNluc) and the other consists of NLuc...
  36. In Living Color: The Skinny on In Vivo Imaging Tools

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    Blog Post
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    March 27, 2014, 5:14 p.m.
    ...than any fluorescent protein earlier described. “Until our proteins, there were lots of fluorescent proteins...least a couple of decades. Green is the classic color, but fluorescent proteins are available in a variety... If you start poking around on Addgene’s Fluorescent Protein Guide to In Vivo Imaging, you’ll pretty quickly...reason. We all know scientists have used fluorescent proteins to observe what’s happening inside cells...unimpeded. The challenge then was to develop fluorescent proteins that would fall within that near-infrared...Verkhusha said. “We developed near-infrared fluorescent proteins within this transparency window, so now,...light photoactivatable (PA) near-infrared fluorescent proteins (FPs), called PAiRFP1 and PAiRFP2, to the...
  37. 22 Hot Plasmid Technologies from 2014

    Type
    Blog Post
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    Jan. 6, 2015, 5:21 p.m.
    ...MitoTimer proteins are derived from the Timer protein - a mutant of the fluorescent protein dsRed that...newly synthesized (green) protein and organelles with older (yellow to orange) protein. Image courtesy of...three possible fluorescent proteins, chosen for minimal spectral overlap, minimal protein aggregation, ...groups to monitor protein and cell ageing, as the spectrum shift occurs during Timer protein life due to a...degradation in vitro and in vivo. Merged green and red channel fluorescence images of C2C12 cells stably expressing... BZ-9000 fluorescence microscope 8 hours post-pulse. The distinct differences of red-to-green fluorescence...1852-61. A quicker method for protein inactivation Your protein of interest does x, but it also participates...
  38. Illuminating Choices: A Guide to Selecting Fluorescent Dyes and Ligands

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    Blog Post
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    March 21, 2024, 1:15 p.m.
    ...b(right)est fluorescent proteinFluorescent Proteins 101: A History of Fluorescent Proteins  ...stability of fluorescence over time is crucial. For instance, the fluorescence of fluorescein isothiocyanate...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...attached to self-labeling proteins. Some common examples of these self-labeling proteins would be SNAP-tag® ...through fluorescent labeling. There are several advantages to using these self-labeling proteins over traditional... traditional fluorescent protein tags, such as higher specificity, increased versatility in probe attachment...
  39. The Michael Davidson Collection: One-Stop Shop for Fluorescent Proteins

    Type
    Blog Post
    Published
    July 29, 2014, 6:16 p.m.
    ...post from Joachim Goedhart: Fluorescent Proteins 101: GFP Fusion Proteins - Making the Right Connection...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 divided... tagged with mEmerald. Plasmids to monitor protein-protein interactions through multicolor labeling and... plasmid backbones spanning a rainbow of fluorescent proteins “It’s a great collection with over 300 backbones... impressively big deposit. “He has every fluorescent protein under the sun, from the standard oldies but...interest isn’t in the ORF collection, the fluorescent proteins are, which makes mixing and matching a relatively...
  40. Antibodies 101: Designing Your First Flow Panel

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    Blog Post
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    May 28, 2024, 1:45 p.m.
    ...inside of your cells. While proteins themselves can emit intrinsic fluorescence when excited with ultraviolet...amino acids found in all proteins, so you can't distinguish the different proteins from each other. To distinguish... A common method of labeling proteins is to fuse them with a fluorescent reporter, such as GFP or mCherry...through detecting the reporter's fluorescence. Another way to label proteins is through treating cells with...distinguish different target proteins in your flow analysis, you'll need to use fluorophores that attach...mCherry, through genetic modification. As your protein of interest will only occur in combination with that...cells. The combination of antibody-fluorophores, fluorescent reporters, and/or dye stains used in your flow...
Showing: 1 - 40 of 107 results