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We narrowed to 475 results for: FLU

Showing: 81 - 100 of 475 results

  1. Antibodies 101: Beyond Surface Labeling

    Type
    Blog Post
    ... conjugated to a fluorophore, not every marker will have a corresponding fluorophore-conjugated antibody...cases, fluorophore-conjugated antibodies may exist, but only with a limited selection of fluorophores. If... tag but not a fluorophore. In a separate step, cells are incubated with a fluorophore-conjugated streptavidin...wide range of fluorophores, allowing for great flexibility when it comes to fluorophore selection for ...common method is a cell surface label, where fluorophore-conjugated antibodies directly bind to epitopes...employ beyond simply incubating cells with single-fluorophore-conjugated antibodies. These methods can include...interaction (Figure 1a). This interaction brings the fluorophore in proximity to the target marker, allowing for...

  2. 28 Hot Plasmid Technologies from 2015

    Type
    Blog Post
    ...overcome the issues with fluorescent pH sensors, a set of luciferase-fluorophore pH fusion reporters, pRSETb-pHlash...from the fluorophore is pH-dependent. Signal is simultaneously acquired from the the fluorescent and luminescent...mimetic and induces fluorescence in the presence of DHFBI, a small molecule fluorophore. When fused to an...FRB-NES and Cas9(C)-FKBP-2xNLS dimerization and net influx into the nucleus, where the functional Cas9 molecule...visualization of single molecules via targeted fluorescent molecules. The Vale lab and the Weissman lab ...protein of interest are recognized and thus fluorescently labeled by scFv antibodies fused to sfGFP. This... This system amplifies the intensity of fluorescence signal and enables tracking of single molecules within...

  3. Evolution of Brainbow: Using Cre-lox for Multicolor Labeling of Neurons

    Type
    Blog Post
    ...challenging due to low fluorescence intensity, caused partially by fluorophore photoinstability, as well... by immunostaining. Although the fluorophores used are fluorescently distinct, their protein sequences...cells. The Brainbow-1.0 construct contains three fluorescent proteins: RFP (red), YFP (yellow) and M-CFP (...recombination. Brainbow-1.1 scales up the system to four fluorescent proteins, with recombination events specified...but the principles remain the same. The first fluorescent protein in the construct, OFP (orange), is expressed...two tandem invertible segments, each with two fluorescent protein coding sequences in opposite orientations...expressed; once Cre is removed from the system, the fluorescent protein whose coding sequence is closest to the...

  4. Magnetic Control of Proteins: More than a Dream

    Type
    Blog Post
    ...a magnetoresponsive fluorescent protein. Controlling an optogenetic or fluorescent tool with magnets would... do fluorescent proteins respond to magnetic fields?” and “What are magnetoresponsive fluorescent proteins...set out to do just that — by developing a new fluorescent protein tool that responds strongly to magnetic...Motivated by curiosity Although a wide range of fluorescent proteins and optogenetic tools exist, humans ...responses of cryptochrome proteins or organic fluorophores (Karki et al., 2021; Lee et al., 2011; Matsuoka...EGFP — showed a slight but detectable change in fluorescence when a small magnet was passed over the sample...sample (Frank Hayward et al., 2024). The fluorescence intensity decreased whenever the magnet approached...

  5. Viral Vectors 101: Voltage Indicators

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    Blog Post
    ...with rhodopsin quenching the added fluor for this two-part fluorescent system, and rhodopsin still functioning... elements: a voltage-sensing component and a fluorescent output. The GEVI family of gadgets includes Ace...Chemigenetic sensors are better classified by their fluorescent reporter and the mechanism of their voltage sensing...VSD-based sensors consist of a VSD fused to a single fluorescent protein (FP). This class of GEVI was the earliest...of red-shifted indicators, and brightness of fluorescence all have room for improvement. These sensors...rhodopsin functions as both the voltage detector and fluorescent signaler. The pro of this system is the kinetic...were initially evolved for ion transport, not fluorescence, they are not nearly as bright as the other ...

  6. Chromoproteins: Colorful Proteins For Molecular Biology Experiments

    Type
    Blog Post
    ...like chromoproteins, fluorescent proteins, and luminescent proteins. While fluorescent proteins and luminescence...from fluorescent proteins? Before going into the difference between chromoproteins and fluorescent proteins...the widely used green fluorescent protein (GFP) gives a bright green fluorescence when exposed to blue ...light, whereas chromoproteins do not fluoresce at all or fluoresce at very low levels. Chromoproteins in...detection. Unlike fluorescence or luminescence, which require UV lamps, fluorometers, or luminometers,...The ocean is full of striking visuals from fluorescent jellyfish, bioluminescent phytoplankton, and colorful... chromoproteins are actually a subset of the fluorescent protein family. What sets them apart is the way...

  7. Luminescent Imaging with Nano-lanterns

    Type
    Blog Post
    ... Since fluorescent proteins (FP) require external light activation, you can’t use fluorescence to monitor...detection is difficult using fluorescent imaging due to autofluorescence and a high signal-to-noise ratio... Learn about Photoactivatable Fluorescent Proteins Check Out Fluorescent Protein Timers Use Rosella to...All Our Fluorescent Protein Resources Find FRET Plasmids Find Empty Backbones with Fluorescent Protein...Fluorescent imaging techniques have become indispensable tools for molecular and cell biologists over...experimental success can be affected by both autofluorescence and photobleaching. Researchers have long ...luciferase transfers energy to the FP, resulting in a fluorescent signal. Since their first publication in 2012...

  8. Neuronal labeling with Spaghetti Monster

    Type
    Blog Post
    ...intrinsically fluorescent and can be detected with highly epitope-specific, fluorescently-labeled antibodies...usually provided by red fluorescent proteins such as tdTomato or RFP or blue fluorescent proteins like Cyan... and David W. Piston. "Fluorescent protein tracking and detection: fluorescent protein structure and color...tracers Neuronal tracers such as epitope tags and fluorescent proteins (FP) have also been important in mapping...tag-specific antibodies. The most famous ones are influenza hemagglutinin (HA), myelocytomatosis viral oncogene...compared to epitopes tags, FPs are intrinsically fluorescent and can therefore be used in live imaging experiments...tracer With the limitations of epitope tags and fluorescent proteins, it has been crucial to develop new ...

  9. Antibodies 101: Flow Compensation

    Type
    Blog Post
    ...up new fluorescent markers before deciding to use them, using a tool like BioLegend’s Fluorophore Guide...the process of correcting spillover from one fluorescent channel to another. When you label your samples...samples with multiple antibodies, the fluorescent probes on the antibodies may have similar emission spectra...spectra, meaning they will emit fluorescent light at similar wavelengths (See this handy emission spectra...spectra). Your cytometer will therefore record the fluorescence for both at similar levels, meaning that your...desired cell population. By compensating between fluorescent channels, you can correct for this spillover ...your flow panel, you will need to know both the fluorescent markers you intend to use and your cytometer’...

  10. Hot Plasmids - October 2020

    Type
    Blog Post
    ...inhibitory synaptic proteins Fluorescent protein system for C. elegans Fluorescent timers for studying cell...Split-wrmScarlet, a fluorescent proteins system for Caenorhabditis elegans By Jennifer Tsang Fluorescent proteins...are not fluorescent on their own. When the two fragments come together, they fuse and fluoresce. The team...neurotransmitters. Using genetically encoded fluorescent proteins coupled with Fibronectin intrabodies...localize to the synapse and minimize extraneous fluorescence from other regions of the cell. By combining...combining vectors expressing different fluorescent proteins targeting inhibitory or excitatory synapses or that...Predicting cell cycle length with a histone-fused fluorescent timer By Kate Harten DeMaio Studies of the cell...

  11. SARS-CoV-2/COVID-19 Detection Methods Based on CRISPR/Cas

    Type
    Blog Post
    ...cleaves the supplied fluorescently labelled ssDNA substrates. Upon cleavage, the fluorescence is no longer quenched... cleavage of fluorescently labelled RNA, the authors employ a P51 cardboard fluorescence visualizer that...streptavidin portion of the probe via biotin. The fluorescent portion of the probe that is cut will continue...cleaves a nearby RNA sequence that contains a fluorophore that is quenched when intact and released when...when cleaved. Cleavage results in fluorescence and this approach can be incorporated into a lateral-flow...recombinase, and the ssDNA-FQ reporters that exhibit fluorescence upon cleavage. Upon amplification by the RPA...cleavage of the ssDNA-FQ reporter resulting in fluorescence. Cas12a binds all the amplified target regions...

  12. MXS Chaining

    Type
    Blog Post
    ...combination of multiple fluorescent protein sequences to develop diverse fluorescent reporters is a useful...been used to produce complex fluorescent reporter constructs. These fluorescent reporters can be used to ...Plasmids 101: Green Fluorescent Protein Resources on Addgene.org Browse our Fluorescent Protein Collection...circuits or sensors. Given the expanding palette of fluorescent proteins and the availability of powerful imaging...MXS-chaining was designed to create plasmids for fluorescence imaging or flow cytometry applications in mammalian...cells. The modules used in this method include fluorescent proteins, promoters, enhancers, polyadenylation...constructs were created, each containing a unique fluorescent protein with minimal spectral overlap between...

  13. Four Base Editing Reporters to Monitor and Enrich Editing in Real-time

    Type
    Blog Post
    ...insertion that disrupts fluorescence due to a frameshift. Restoration of fluorescence can only occur through...mCherry expression. Cells can then be sorted using Fluorescence-activated cell sorting (FACS) and the editing...restoration of a frame-shift in mCherry that restores fluorescence to monitor APOBEC-Cas-9 mediated editing. eGFP...individually mutated three codons in eGFP to eliminate fluorescence. This created three inactivated eGFP reporters...the APOBEC-Cas9 editosome would restore eGFP fluorescence, making it easy to quantify single base editing...mutations in eGFP that results in the restoration of fluorescence. Transient reporter for editing enrichment (...Standage-Beier et al. 2019). TREE is a real-time, fluorescent based identification system for the isolation...

  14. Hot Plasmids and Viral Preps - July 2021

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    Blog Post
    ...relies on the fluorescence ratio between the 2 fluorophores, rather than on the fluorescence intensity, ...designed novel SL fluorescent biosensors by integrating a SL-insensitive fluorophore (LSSmOrange) as an...control and a SL-sensitive fluorophore (circularly permuted green fluorescent protein or cpGFP) to the ...thoughtfully designed plasmid components with Fluorescence Activated Cell Sorting (FACS), allowing for .../doi.org/10.1101/2020.05.04.076067    Novel fluorescent enzyme biosensors provide direct, specific and...conformational change of the receptor which modulates the fluorescence intensity of the cpGFP without altering that... authors also showed that the receptor-based fluorescent biosensor has a high sensitivity (50 nM-500nM...

  15. Bacterial Expression Systems

    Type
    Collection
    ... Right Connection Photoactivatable Fluorescent Proteins Fluorescent Protein Timers Return to top Protein...interactions using fluorescence microscopy. FRET relies on the principle that when a donor fluorophore is excited...will be able to detect fluorescence both from the donor and the acceptor fluorophore by only exciting the...ratio Fluorescence (GFP) Escherichia coli Gary Yellen 187836 pVoPo-01 Promoter activity Fluorescence (mCherry...activity Fluorescence (mCherry) Escherichia coli Mattheos Koffas 173481 HC-M ATP Fluorescence (GFPmut2...activity Fluorescence (mRFP1) Escherichia coli Mary Dunlop 124605 pSCM001 Cytoplasmic pH Fluorescence (mCherry...Promoter activity Fluorescence (turbo-365) Mycobacterium sp. Tanya Parish 26156 pMV306hsp+FFluc Promoter activity...

  16. Hot Plasmids - August 2020

    Type
    Blog Post
    ...in this post: Yeast-based protein evolution Fluorescent tools for mammalian cells Nanobody purification...enables tracking of protease activity with a fluorescent protein--no affinity purification required! The...doi.org/10.1038/s41592-019-0665-7 Optimizing fluorescent tools for labeling structures and compartments...mammalian cells By Angela Abitua Genetically encoded fluorescent proteins are often used to label  specific structures...biomolecules within cells. However, sometimes these fluorescent proteins might not localize to the right places...ongoing effort to improve genetically encoded fluorescent markers for labeling specific structures within...described several improved genetically encoded fluorescent markers tagged with mTurquoise2, mNeonGreen, ...

  17. OCaMP: A New Calcium Indicator for Neural Imaging

    Type
    Blog Post
    ...the B(right)est Fluorescent Protein Additional Resources on addgene.org Fluorescent Proteins: Biosensor...a vital tool in neuroscience research. These fluorescent proteins light up in response to calcium, which...indicator, OCaMP. The challenge: Expanding the fluorescent toolbox Modern neuroscience experiments often...often rely on multiplexing, where multiple fluorescent tools are used simultaneously to monitor or control...various teal, green, yellow, orange, and red fluorophores. The spectra for mOrange2 (scaffold of OCaMP...jGCaMP8) remains the gold standard for green fluorescence, while red indicators jRGECO1a and jRCaMP1a ... OCaMP (Aggarwal et al., 2025), based on the fluorescent protein mOrange2 (Figure 2). Figure 2...

  18. 15 Hot Plasmids from 2017

    Type
    Blog Post
    ...cyan-excitable red fluorescent protein (mCyRFP1). Derived from cyan-excitable organge fluorescent protein (CyOFP1...as a donor in FRET (fluorescence resonance energy transfer) and FLIM (Fluorescence Lifetime Imaging Microscopy... al., 2007) and includes four promoters, six fluorophores with nonoverlapping emission spectra (N- and...Segment on This New AAV Tool    mCyRFP1: Novel fluorescent protein that enables imaging of two biosensors...to that of CyOFP1, a large stokes shift, long fluorescence lifetime, and a stable monomeric form as determined...mCyRFP1 Podcast Segment New bright monomeric red fluorescent protein - mScarlet! The Dorus Gadella lab has...has recently developed a synthetic red fluorescent protein variant they call mScarlet. Bindels et al used...

  19. Mapping the 4D nucleome with CRISPR/Cas9

    Type
    Blog Post
    ...to label loci, such as fluorescence in situ hybridization (FISH) or fluorescently labeled TALEs, CRISPR...applications is a colorful system that uses fluorescently labeled Cas9 to label multiple genomic loci .... dCas9 has also previously been adapted to fluorescently label a sequence matching its gRNA, facilitating...St1Cas9. Each ortholog was fused to a different fluorescent protein to create three colors. The specificity...telomeric sequences and showed that different fluorescently labeled dCas9 isoforms are efficiently directed...distances of 75 and 2 Mbp, with the calculated fluorescent distances correlating with the previously established... al. developed this technique using standard fluorescence microscopy, and are thus limited by its lower...

  20. HA Frankenbody, a New Imaging Tool to Visualize Single Molecules and Nascent Peptides

    Type
    Blog Post
    ...lab fused a fluorescent protein to the hybrid anti-HA scFvs. The addition of the fluorescent protein allows...to amplify fluorescent signals in in vivo imaging: the 10xHA tag increased the fluorescent signal to noise...protein turnover Download the fluorescent protein eBook Browse our fluorescent protein blog posts Resources...Read our fluorescent protein guide Find plasmids for subcellular localization Find fluorescent protein ... part epitope binding region, all fused to a fluorescent protein. “Frankenbody,” like the infamous frankenstein...scFvs) (Inbar et al., 1972) are fused to mature fluorophores, and can bind and light up epitope tagged proteins...as living neurons, and can be fused to other fluorescent proteins and tags including mCherry, HaloTag ...
Showing: 81 - 100 of 475 results