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Showing: 61 - 80 of 85 results
  1. Popular Retroviral Vectors and Their Uses in Scientific Research

    Type
    Blog Post
    Published
    July 24, 2018, 12:51 p.m.
    ...technology CAG-GFP-IRES-CRE (Plasmid #48201) This retroviral vector from the Gage lab encodes GFP and Cre-recombinase...Cre), together with expression of fluorescent or enzymatic reporters for cellular assays and animal imaging...Vectors   Expressing your gene of interest pMKO.1 GFP (Plasmid #10676) Retroviral vector for cloning and...and expressing your gene of interest with GFP expression.  Cloning and expressing RNAi pMKO.1 puro (Plasmid...
  2. Chromoproteins: Colorful Proteins For Molecular Biology Experiments

    Type
    Blog Post
    Published
    Feb. 4, 2020, 2:15 p.m.
    ...the widely used green fluorescent protein (GFP) gives a bright green fluorescence when exposed to blue ...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...light, whereas chromoproteins do not fluoresce at all or fluoresce at very low levels. Chromoproteins in...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... in nature Compared to the history of fluorescent proteins in molecular biology research, chromoproteins...
  3. 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 ...protein non-fluorescent. Unfortunately, accumulated misfolded and nonfunctional (dark) fluorescent proteins...Costantini, and Erik L. Snapp. "Superfolder GFP is fluorescent in oxidizing environments when targeted via...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...
  4. Sleeping Beauty Awakens for Genome Engineering

    Type
    Blog Post
    Published
    June 30, 2015, 2 p.m.
    ...neomycin, puromycin, hygromycin) and fluorescent protein reporters (GFP, BFP, RFP, no FP). The vectors each...region of the RPL41 gene, to drive the selection/reporter parts of each construct. This new tool kit allows...
  5. Choosing Your Perfect Empty Backbone

    Type
    Blog Post
    Published
    Aug. 19, 2014, 3:39 p.m.
    ...popular studies involve using a reporter vector to tag YGOI with lacZ and/or GFP (e.g. pPD80_08) and following...in-frame fluorescent fusion protein will allow you to visualize YGOI in vivo (try pcDNA3-EGFP). If you...animals, gene targeting and genome modifications to reporter vectors (e.g. pBV-Luc) and gene silencing (e.g...
  6. The Fluorescent Vegetables in Aptamer Soup

    Type
    Blog Post
    Published
    Jan. 29, 2019, 2:27 p.m.
    ...small molecule activates the fluorescence of the small molecule. Fluorescent RNA aptamers are used to track... applications of fluorescent RNA aptamers in Addgene’s collection. Green fluorescent aptamers Spinach ...selection of an RNA mimic of green fluorescent protein by fluorescence-based selection and directed evolution...using aptamers might know this best, as most fluorescent aptamers are named for a fruit or vegetable! ...What is an RNA aptamer? RNA is not inherently fluorescent and can be challenging to track intracellularly... affinity to small molecules to induce their fluorescence. Until a binding event occurs, neither the aptamer... aptamer nor the small molecule are strongly fluorescent but the binding of an aptamer to its target small...
  7. CRISPR 101: Targeting RNA with Cas13a (C2c2)

    Type
    Blog Post
    Published
    Sept. 21, 2017, 2:07 p.m.
    ...sequence of interest and an inactivated fluorescent RNA reporter. If the target sequence is present in ... the RNA reporter will be cleaved resulting in activation of the fluorophore. The fluorescent signal can... a superfolder GFP fusion to stabilize the protein in mammalian cells. LwaCas13a-msfGFP can mediate cleavage...programmable RNA-binding protein, creating the fluorescent fusion protein dLwaCas13a-NF for in vivo RNA ...
  8. Hot Plasmids September 2018 - Optogenetics, RNA Localization, Fluorescent Protein, and Base-editing Tools

    Type
    Blog Post
    Published
    Sept. 18, 2018, 1:33 p.m.
    ...ACE) in real-time. The reporter constitutively expresses eGFP to indicate reporter abundance, and mCherry...30220597. ACE system: A versatile in vivo fluorescent reporter for rapid quantification of base-editing...Harris lab has deposited a reporter plasmid that allows for rapid fluorescence-based quantification of base...ratio of mCherry-positive to eGFP positive cells through fluorescence microscopy or flow cytometry. Using...cobalamin-binding riboswitches that bind to cobalamin-fused fluorescent dyes; binding of the cobalamin fusion to the ...the riboswitch results in increased fluorescent signal. Prior to the development of these probes, fluorophore...fluorophore binding aptamers and MS2-binding fluorescent proteins were the state of the art in RNA imaging...
  9. An “elegans” Approach to Better CRISPR/Cas9 Editing Efficiency

    Type
    Blog Post
    Published
    Dec. 17, 2020, 1:30 p.m.
    ...such as drug resistance (Chen et al., 2013), fluorescence (GFP; Tzur et al., 2013), or rescue of mutant phenotypes...epitopes, such as GFP (Paix et al., 2014). A further development of this approach reported in 2017 uses the...approaches may become even more powerful following a report that one can use linear repair templates (ie. PCR-derived...templates (Farboud et al., 2019).   The Mello lab also reported that modifying the 5’ modification of oligos used...efficiencies, obtaining as many as 100 independent GFP knock-ins from a single injected animal.  PAM sequence...mixtures (Doksin et al., 2018). The Mello lab also reported efficient editing using a co-injection marker ...
  10. 15 Hot Plasmids from 2017

    Type
    Blog Post
    Published
    Jan. 9, 2018, 3:02 p.m.
    ...phosphatase-positive assay) as well as stabilization (Nanog-GFP reporter activation and silencing of factor-linked mCherry...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...elements and combined it with a variety of reporters (i.e. eGFP) and effectors (i.e. DREADDs). The team ...are available at Addgene. Kim, et al. Stem Cell Reports. 2015. PubMed PMID: 25772473 Targeting and manipulating...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...
  11. Evolution of Brainbow: Using Cre-lox for Multicolor Labeling of Neurons

    Type
    Blog Post
    Published
    April 24, 2015, 2:39 p.m.
    ...low levels of both fluorescence and sequence overlap (coral mOrange2, jellyfish EGFP, and sea anemone mKate2...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...-2.1 construct can express one of four colors (n-GFP, RFP, YFP or M-CFP.) The construct contains two tandem... 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...
  12. Plasmids 101: What is a plasmid?

    Type
    Blog Post
    Published
    April 2, 2020, 6:17 p.m.
    ...quantity inside a cell Plasmids 101: Green Fluorescent Protein (GFP) Plasmids 101: Luciferase Monitor ...expression plasmids, gene knock-down plasmids, reporter plasmids, viral plasmids, and genome engineering...
  13. Special Delivery: Fluorophore Targeting for FRET Studies

    Type
    Blog Post
    Published
    July 19, 2016, 2:30 p.m.
    ...there is no fluorescence background resulting from nonspecific donor labeling. Fluorescent proteins (FPs...incorporation of fluorescent probes into protein: hexahistidine-tag-mediated fluorescent labeling with (...Experiments Beware of Fluorescent Protein Aggregation Brush up on Your Fluorescent Protein Basics Resources...Browse Empty Plasmids to Fluorescent Protein Fusions Check out Our Fluorescent Protein Guide ... permeabilized cells  Cy5NTAc 32 25-45 GFP (fluorescein is similar)   Lumio Red Tc: CCPGCC 48 38-70...answers. What is FRET and what's it good for? Fluorescence resonance energy transfer (FRET) is a biophysical...uncoupled donors. The best method for targeting a fluorescent donor to your protein is to hardwire the molecule...
  14. Magnetic Control of Proteins: More than a Dream

    Type
    Blog Post
    Published
    Sept. 24, 2024, 1:15 p.m.
    ...reproduced their EGFP findings since the initial report in 2023.)     Figure 1: Fluorescence intensity...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... expressing good ol’ EGFP — showed a slight but detectable change in fluorescence when a small magnet ...see if any other fluorescent proteins display a similar effect (many do). Fusing EGFP to the self-labeling...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 ...
  15. Plasmids 101: Multicistronic Vectors

    Type
    Blog Post
    Published
    Sept. 9, 2014, 8:20 p.m.
    ...along with a reporter, such as a fluorescence gene or a resistance gene. These reporters allow you to ...at equivalent levels upstream of an IRES fluorescent reporter for easy detection.5  Just released: Addgene's... using IRES elements. Further, scientists have reported lower expression of the downstream cistron due...eukaryotic cells, and, although some scientists report close to 100% cleavage with some of these peptides...co-express your gene of interest along with a fluorescent protein or selectable marker, it is easiest to...that already has the multicistronic element and reporter cloned in. In these plasmids you would simply ... 2A element (depending on the placement of the reporter gene). Addgene's collection offers a variety of...
  16. 27 Hot Plasmids from 2016

    Type
    Blog Post
    Published
    Dec. 22, 2016, 3:03 p.m.
    ...with Rosella, a pH-sensitive fluorescent biosensor A pH-sensitive fluorescent biosensor-based assay system..., Hess et al. successfully evolved wild type GFP to EGFP using CRISPR-X and subsequent FACS sorting. They...-ome using a quick, affordable, and ubiquitous reporter assay. In their recent publication, Kroeze et ...with unique tissue-specific promoters expressing GFP, tetracycline response elements, and shRNAs many ... of DsRed connected to a pH-sensitive variant of GFP (SEP) by a 9 amino-acid linker (see Figure 1). The...DsRed is relatively pH-insensitive, while SEP fluoresces at cellular pH (7.0) but not at vacuolar pH (...environments that inactivate SEP and leave only DsRed to fluoresce (1). With variants that can be targeted to specific...
  17. Choosing the B(right)est Fluorescent Protein: Aggregation Tendency

    Type
    Blog Post
    Published
    June 15, 2017, 2:30 p.m.
    ...approach to selecting a bright fluorescent protein and a photostable fluorescent protein. In the third post.... In corals, the red fluorescent proteins form tetramers. In general, fluorescent proteins have a natural...your research. But be aware that the fluorescent proteins reported in publications are only characterized... 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...select a non-aggregating fluorescent protein. In the jellyfish Aequorea victoria, AvGFP forms a homodimer. ...be compared with mEGFP or mTurquoise2, which are established true monomeric fluorescent proteins. Concluding...
  18. Hot Plasmids and Viral Preps - July 2021

    Type
    Blog Post
    Published
    July 27, 2021, 1:15 p.m.
    ...relies on the fluorescence ratio between the 2 fluorophores, rather than on the fluorescence intensity, ...fluorophore (circularly permuted green fluorescent protein or cpGFP) to the petunia SL enzymatic receptor...the receptor which modulates the fluorescence intensity of the cpGFP without altering that of the internal...straightforward workflow for doing gene targeting, reporter generation, controllable gene knockouts, and inducible...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... Claudia Vickers’s lab has designed novel SL fluorescent biosensors by integrating a SL-insensitive fluorophore...
  19. A Practical Approach to Choosing the B(right)est Fluorescent Protein

    Type
    Blog Post
    Published
    June 1, 2017, 2:30 p.m.
    ...explains how to critically assess the reported properties of fluorescent proteins, how to do a head-to-head...comparison of fluorescent proteins and how to make a well-informed decision on the best fluorescent protein ...best fluorescent protein for a specific application can seem like a daunting task. Many fluorescent proteins... number of fluorescent proteins is steadily increasing. Often, the choice for a fluorescent protein is...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...
Showing: 61 - 80 of 85 results