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We narrowed to 44 results for: Free Use GFP

Showing: 21 - 40 of 44 results
  1. Antibodies 101: Single Chain Fragment Variables (scFvs)

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    Blog Post
    ... are scFvs used for? scFvs are used in many of the ways antibodies are. scFvs are even used to screen ...clearance, which is useful for imaging applications; better tissue penetration which is useful for therapeutic...immunized animals, but it's possible to avoid animal use by using semi-synthetic or entirely synthetic VL and ...binding scFv that’s fused to GFP. When the multiple copies of the scFv-GFP fusion bind the SunTag scaffold... this, one or more of these approaches are often used for scFv expression in bacteria:  targeting to ...Sandomenico et al., 2020). conversion to a cysteine free format that’s easier to express in the cytoplasm..., makes them better suited than antibodies to be used as building blocks for engineered proteins. This...
  2. Save Time with Transient Plant Leaf Transformations

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    Blog Post
    ... We used the disarmed Agrobacterium tumefaciens strain GV3101(pMP90), which works well for us. Use a well...can be used to develop stable hairy root lines in tissue culture. This method is commonly used in C. roseus...rLUC-I::pMAS. Fluorescent proteins (FP, e.g. GFP) can be used in many ways. Often a FP is fused to a protein...the commonly used CaMV 35S promoter in Agrobacterium. This can be easily avoided by the use of introns,...or plants, our transient expression method enables us to quickly screen and investigate transcription factor...gene silencing (VIGS) is a transient technique that uses a virus and the plant's post-transcriptional machinery...Mortensen et al., 2019). Our method might provide some useful guidelines for the development of transient transformation...
  3. Plasmids 101: Protein tags

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    Blog Post
    ...Plasmids 101 has covered GFP and its related fluorescent proteins, which are sometimes used as tags for detection... proteins can be purified using metal-affinity chromatography, usually using a Ni2+ column. Like other...Affinity Frequently used for western blots, IP, co-IP, IF, flow -cytometry, but rarely used for purification...various mutations used to increase its stability activity, can be readily purified using plasmids found ...Fluorescent Protein Should I Use? Plasmids 101: Green Fluorescent Protein (GFP) Fluorescent Protein Guide...the accompanying cartoon, they have a multitude of uses including (but not limited to) purification, detection... to insolubility, and aggregated protein is not useful protein. MBP tags can help with solubility issues...
  4. Better Dyeing Through Chemistry & Small Molecule Fluorophores

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    Blog Post
    ...chemistry! The discovery of green fluorescent protein (GFP) sparked a renaissance in biological imaging. Suddenly...advances lead to an obvious question: In this age of GFP and its ilk, why should cell biologists talk to chemists...encoded tetracysteine (Cys4) peptide tag could be used to label proteins in cells (Figure 1a). Other strategies...e.g., SNAP-tag, HaloTag, TMP-tag) – These widely used systems consist of a genetically encoded enzyme ...be incorporated into a protein structure and then used with the growing toolbox of bioorthogonal chemical...meaning the ligand exhibits low fluorescence when free in solution, but high fluorescence upon binding ...fluorogenic and several others can be made fluorogenic using environmentally sensitive fluorophores. Overall,...
  5. Antibodies 101: Immunoprecipitation

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    Blog Post
    ...which can be used for most antibodies compatible with either Protein A or G.  While commonly used, Protein...the antibody used for IP is derived from the same species as the antibody that will be used for detection...such as this, an epitope such as c-Myc, GFP or V5 can be used to tag the protein of interest on the C-...will need to be verified using alternative methods.  Finally, IP can also be used to study proteins that...Immunoprecipitation (IP) uses immobilized antibodies, or immunoglobulins, to isolate a specific protein...protein out of a complex mix. Using this technique, users can look for the presence or absence of a protein...target is present in low amounts. In this method, the free antibody is incubated with the protein mix and antibody-target...
  6. Luciferase Plasmid Collection

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    Collection
    ...split-luciferase complementation assay in plants using Gateway cloning. Use with 174051 Alberto Macho 174051 pGWB-cLUC...split-luciferase complementation assay in plants using Gateway cloning. Use with 174050 Alberto Macho 136010 psi-...luciferase and GFP James Wilson 22522 phGluc Gaussia EF1α Expression of Gaussia luciferase; GFP is expressed...emission, substrate use, stability, or other features. AkaLuc : Engineered to use the substrate Akalumine...enhancers using a firefly luciferase reporter. These plasmids improve on the original STARR-seq by using the...luciferase have short protein half-lives, making them useful as transcriptional reporters, but are less-than-ideal...Firefly Insertion of 5' promoter/enhancer regions using Gateway cloning. Jorge Ferrer 16539 pBV-Luc Firefly...
  7. Tetracycline Inducible Expression

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    ...Iwasato 63704 pRetroX GFP T2A Cre Retroviral vector for dox-inducible expression of GFP T2A Cre recombinase...expression and find plasmids for your experiments using tet- or dox-inducible systems. Plasmid...more about the components of tet systems and how to use them, or skip ahead to view highlighted Tet plasmids... interest should only be expressed occasionally, use Tet-On: express an rtTA or TetR and include a tet-responsive...generally active and only turned off occasionally, use Tet-Off: express a tTA and include a tet-responsive...upstream of your gene of interest. Many plasmids use "TetO" or "Tet-O" in their name or description, meaning...or Tet-On systems, depending on whether they are used alongside a tTA or rtTA, respectively. You should...
  8. New Acoustic Reporter Genes: Ultrasound Imaging of Gene Expression

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    Blog Post
    ...genes are widely used to study gene expression in cells. But these reporters have limited use in vivo because...genes gvpNJKFGWV marked with Emerald GFP. These plasmids can be used directly in transient transfection ...higher) of BFP and GFP producing cells. After FACS, return the cells to doxycycline-free media and expand...bacteria The first-generation bacterial ARGs (bARGs), used in bacteria, expressed poorly at body temperature...tissue unless destructive ultrasound imaging was used. We set out to develop next-generation bARGs that... not require a booster cassette, either, allowing us to reduce the genetic footprint yet again. This ...the cell line with rtTA, then integrate the mARGs using PiggyBac. Gas vesicles are detectable under ultrasound...
  9. Antibodies 101: Designing Your First Flow Panel

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    Blog Post
    ...stains that react with free amines on and inside the cells and are thus typically used for distinguishing ...commonly used fluorophores. Each fluorophore has a defined emission maximum. Note, you can also use the tool...mentioned previously, you can also use fluorescent reporters, such as GFP, and fluorophore-conjugated antibodies...the spectra of enhanced GFP (eGFP) and FITC, the latter being a commonly used fluorophore for antibody-conjugated...you cannot use them together in the same panel. Source: https://www.bdbiosciences.com/en-us/resources/...cytometer's software (without using the actual FITC fluorophore in our panel) will allow us to detect the eGFP signal...the fluorophores used in our panel (Table 2). Source: https://www.bdbiosciences.com/en-us/resources/bd-spectrum-viewer...
  10. An “elegans” Approach to Better CRISPR/Cas9 Editing Efficiency

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    Blog Post
    ...organisms which I use to study gene regulation during developmental processes, CRISPR/Cas9 allows us to delete...such as GFP (Paix et al., 2014). A further development of this approach reported in 2017 uses the direct...drug resistance (Chen et al., 2013), fluorescence (GFP; Tzur et al., 2013), or rescue of mutant phenotypes...first approach – co-CRISPR from Craig Mello’s lab – used inactivation of the unc-22 gene as their selection...marker (Kim et al., 2014). Meanwhile Andy Fire’s lab used oligo-mediated knock-in of a dominant mutation, ...even more powerful following a report that one can use linear repair templates (ie. PCR-derived dsDNA) with...co-conversion approaches have the advantage of being used in any genetic background, but require variable ...
  11. Quick Guide to Near-Infrared Fluorescent Proteins

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    Blog Post
    ... They can also be used in crosstalk-free three-color imaging with green and red GFP-like FPs (Shcherbakova.... Modern state-of-the-art NIR FPs can be used similar to GFP-like probes by supplying a single gene to... Multiple uses: From multiplexing to multiscaling NIR-shifted spectrum is perfect for use in spectral... endogenous BV.  When imaging NIR FPs, consider using light sources that produce enough light intensities...near-infrared) (Qian et al., 2019).  NIR FPs are useful in vivo probes, due to low autofluorescence, low...cellular brightness than previously reported widely used dimeric iRFPs (Table 1). In general, the monomeric...state of a fusion partner. Therefore, we recommend using miRFPs and their enhanced versions named emiRFPs...
  12. Viral Vectors 101: Calcium Sensors

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    Blog Post
    ...available biosensors use a single GFP or CFP/YFP-derived FRET pair. If you need to free up crowded optical...this blog we will explore some of the most commonly used as well as newly developed calcium sensors. Selecting...calmodulin or troponin C). Their fluorescent readouts are used to monitor calcium concentrations and transients...there waiting for you. When selecting a sensor to use for your studies, you can start by asking ‘What is...changes. The GCaMP6 family of sensors are commonly used calcium reporters with different kinetic parameters...experiment could be subtle or dramatic. You want to use a calcium sensor that is most sensitive to your expected...available. Detection methods Many calcium reporters use a single fluorescent protein (FP), requiring only...
  13. Adenovirus Guide

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    Guide
    ...limited their use in therapeutic applications. However, this has also made them the most widely used viral vector...pAdTrack series contains an IRES-GFP construct that enables co-expression of GFP with the transgene of interest...viral vector production. During experiments, GFP can be used to sort cells infected with rAdV vectors, or.... Figure is based on the use of pAdEasy-1. AdMax™ AdMax™ is another well used rAdV vector production platform...disadvantage for the use of rAdV vectors in gene therapy but has, however, proven to be very useful for designing...that contain IRES-GFP. Pseudotyping The production of viral vectors (or viruses) using viral envelope proteins...that do not contain GFP. Recombinant adenoviral vector (rAdV) Modified form of AdV used to deliver genetic...
  14. Simple CRISPR-based Epigenetic Editing: dCas9-directed DNA Demethylation

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    Blog Post
    ...Ready to get started?   Figure 1: Break free from the ball and chain!   Epigenetics nation...Addgene has several great options: pLV hUbC-dCas9-T2A-GFP for removable dCas9 expression and pLM-CMV-R-Cre....sorting, and stable gRNA expression can be achieved using lentiviral backbones expressing blasticidin or puromycin...et al. (2016) Targeted DNA demethylation in vivo using dCas9–peptide repeat and scFv–TET1 catalytic domain...
  15. Chromoproteins: Colorful Proteins For Molecular Biology Experiments

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    Blog Post
    ...ambient light. In contrast, the widely used green fluorescent protein (GFP) gives a bright green fluorescence...anemone's red color can be used for mimicry. Image: Bernard Spragg. Advantages of using chromoproteins for ...chromoproteins used in the lab come from eukaryotes, they can be difficult to directly use in bacteria, ...fluorescent proteins and luminescence have been widely used in biological research for a long time, chromoproteins...anemone, scientists think that chromoproteins could be used for mimicry and camouflage. An anemone’s red colored..., it gives scientists the ability for instrument-free detection. Unlike fluorescence or luminescence, ...substrates for screening. Thus chromoproteins can be used as markers in cases where cost and resources are...
  16. Gamma-Retroviral Vector Guide

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    Guide
    ...Production Using Packaging Cell Lines Gamma-retroviral vectors can be packaged using helper-free cell lines...Common Uses of Gamma-Retroviral Vectors Due to their integration, gamma-retroviral vectors are useful research...-activated cell sorting (FACS) is used to sort cells expressing GFP and later, sorted cells are expanded...clinical studies and commercial purposes. The use of helper-free production cell lines also saves time in ... vectors (or viruses) using viral envelope proteins from different species. Used to alter infectivity ...gamma-retroviral components, retroviral production, and common uses. Science...Vector Production Integration Pseudotyping Common Uses Safety Resources Plasmid Elements Glossary Credits...
  17. CRISPR 101: Targeting RNA with Cas13a (C2c2)

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    ...most commonly used CRISPR enzymes - Cas13a contains two HEPN domains, whereas Cas9 uses HNH and RuvC domains...starters, Cas13a can be used to bind and cleave target RNAs, although its usefulness in bacterial cells will...Cas13a from Leptotrichia wadei (LwaCas13a), using a superfolder GFP fusion to stabilize the protein in mammalian...exceptional genome engineering tool. It is easy to use, functional in most species, and has many applications...identified in 2015 (Shmakov et al., 2015). They were using Cas1, a gene commonly associated with CRISPR arrays...targeting with a single crRNA The Feng Zhang lab used Cas13a from Leptotrichia shahii (LshCas13a) to begin...2016). In the endogenous CRISPR/Cas9 system, Cas9 uses both a tracrRNA and crRNA to facilitate binding ...
  18. The Challenges of Cell Culture

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    Blog Post
    ...cell lines deposited with them and used by different researchers are free of contamination and match their... profiling can be used to ID the cell line. The same test is so good that it is used as a forensic technique...working vials have been used up. This ensures you can retain the maximum stocks and use of the original Cell...for Mammalian Cells Learn about the Dangers of Using GFP for Protein Localization Resources on Addgene.org...the present day Cell culture is a widespread tool used in the fields of oncology, virology, immunology,...specific to their origins. This technique is still used today to test for HeLa contamination. HeLa contamination... world has a unique STR profile) and can also be used as a paternity test. The test is accurate, precise...
  19. Avoiding the Dark Side of Fluorescent Protein Fusions with mOX FPs

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    ...proteins in these compartments using CRISPR systems should strongly consider using moxFPs over standard FPs ...Generally, FPs evolved in or were engineered for use in cytoplasmic environments. However, approximately...the ER and fluorescing (see Figure 2) [5].  When using FPs containing two cysteine residues and a sequence...protein functions properly? We suggest starting by using the newly published oxidative optimized palette ...green, cyan, yellow, and blue variants that can be used in various combinations. For example, with standard...herpesvirus.       References 1. Snapp, Erik. "Design and use of fluorescent fusion proteins in cell biology."Current...: PMC2784028. 3. Munro, Sean, and H. R. Pelham. "Use of peptide tagging to detect proteins expressed from...
  20. Fluorescent Protein Guide: Biosensors

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    ...FlincG3 (GFP-based cGMP sensor) for imaging in C. elegans neurons Using a Robust and Sensitive GFP-Based ...negative-control constructs used to characterize the sensor's behavior in the target system. Use care when applying...Calcium erGAP3 (GFP-Aequorin Protein) for imaging of Ca 2+ dynamics in endoplasmic reticulum GFP-Aequorin Protein...browse all the biosensors tagged in our catalog . Use the article links to find the plasmids associated...associated with the article. We also offer ready-to-use AAV preparations of select plasmids and AAV Packaged on...2020 GENIE Project Calcium jGCaMP7 High-performance GFP-based calcium indicators (Constitutive or Cre-dependent...intraorganellar Ca 2+ at subcellular resolution using CEPIA. Nat Commun. 2014 Jun 13;5:4153. Masamitsu...
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