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Showing: 21 - 40 of 46 results
  1. Visualizing Translation at the Single Molecule Level

    Type
    Blog Post
    Published
    Aug. 1, 2017, 1:15 p.m.
    ...Yan et al.’s reporter contains 24 copies of SunTag, a synthetic scaffold that can recruit GFP fused to the...following components: a GFP protein that binds to the coding region of a reporter mRNA via a PP7 coat protein...protein (NLS-PCP-GFP) an RFP protein that binds to the 3’ UTR of the reporter mRNA via an MS2 coat protein...64543) Before translation, both GFP and RFP are bound to the reporter, causing it to appear yellow. The...translation pushes NLS-PCP-GFP off of the mRNA, leaving only a red FP bound to the reporter. Because it contains...translation is necessary for removal of GFP from the TRICK reporter. Delayed translation is known to be important...correlated with GFP intensity, showing that TRICK is an accurate readout of relative reporter translation....
  2. 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...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...a gRNA cassette. It can be used to produce a ~10-fold higher titer of lentiviral particles than the original...together with expression of fluorescent or enzymatic reporters for cellular assays and animal imaging studies...
  3. Sleeping Beauty Awakens for Genome Engineering

    Type
    Blog Post
    Published
    June 30, 2015, 2 p.m.
    ...puromycin, hygromycin) and fluorescent protein reporters (GFP, BFP, RFP, no FP). The vectors each contain...SB transposase, SB100X, that is approximately 100-fold more efficient than the first-generation transposase...region of the RPL41 gene, to drive the selection/reporter parts of each construct. This new tool kit allows...
  4. 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...from the resin and used for various binding or folding assays. Yeast vectors There are several types of...animals, gene targeting and genome modifications to reporter vectors (e.g. pBV-Luc) and gene silencing (e.g... allow you to visualize YGOI in vivo (try pcDNA3-EGFP). If you can get away with generating transiently...
  5. Synthetic Photobiology: Optogenetics for E. coli

    Type
    Blog Post
    Published
    Sept. 8, 2015, 2:30 p.m.
    ...phosphorylation, promoting transcription of a GFP reporter. Subsequent exposure to red light rapidly deactivates...highest level of “output” signal, was only about 10-fold, precluding the study of gene expression at very...leakiness and increased dynamic range to around 100-fold. These improvements will allow researchers to better...
  6. Tips for Screening with Yeast Two Hybrid Systems

    Type
    Blog Post
    Published
    Oct. 22, 2015, 2:30 p.m.
    ...its target gene, in this case a reporter gene (e.g. luciferase or GFP), regardless of whether it interacts...the promoter of the reporter gene to activate expression (Figure 2c). The reporter gene then allows detection...genes as reporters and some that repress instead of activate transcription. The HIS3 reporter system (...co-expressed in a yeast strain that also contains a reporter gene cloned downstream of a promoter containing...referred to as the “bait”, Figure 2b) cannot activate reporter gene expression on its own, but, if the two POI...Gal4 activator, bacterial LexA DBD and the lacZ reporter gene (3, 4), there are now many variations, including...to have Y2H systems that avoid transcriptional reporters altogether; In the split-luciferase system, intein-mediated...
  7. Avoiding the Dark Side of Fluorescent Protein Fusions with mOX FPs

    Type
    Blog Post
    Published
    Oct. 27, 2015, 3 p.m.
    ...fusion protein molecules fail to correctly fold? Misfolded FPs do not fluoresce. A dark population is ...disrupt FP folding rendering the protein non-fluorescent. Unfortunately, accumulated misfolded and nonfunctional...Lindsey M. Costantini, and Erik L. Snapp. "Superfolder GFP is fluorescent in oxidizing environments when...potentially affect function [5]. We and others have reported that FP cysteine residues form inappropriate disulfide...been a pervasive view that most FPs in a cell will fold and that the fluorescence pattern is equivalent ...brighter FP, but rather because of the correct folding and fluorophore formation by most, if not all, ...missed the impact of dark, non-fluorescent, and misfolded FP-fusions on quantitative imaging experiments...
  8. Hot Plasmids - February 2022

    Type
    Blog Post
    Published
    Feb. 22, 2022, 2:15 p.m.
    ...region of a FLAG-binding scFv onto a well-folded scFv scaffold to improve its stability in cells, and use...-FLAG scFv and a stable scFv scaffold. (b) Schematic of anti-FLAG-FB-GFP binding to FLAG-tag H2B for nuclear...nuclear localization. (c) Applications of anti-FLAG-FB-GFP labeling various targets with nuclear (top, 4x-FLAG-mCherry-H2B...induce high levels of gene activation for both reporter and endogenous genes. It is highly specific in...This set of new anti-FLAG frankebodies includes mEGFP, mRuby2, iRFP713, SNAP-tag, and HaloTag fusions,...fusions, while the anti-HA frankenbodies include mEGFP, mCherry, and HaloTag. Figure 1: (a) Anti-FLAG...
  9. 22 Hot Plasmid Technologies from 2014

    Type
    Blog Post
    Published
    Jan. 6, 2015, 5:21 p.m.
    ...dim GFPs The availability of the three dimensional structure of GFP, its brighter mutant S65T-GFP, and...and GFP shRNA. Mice carrying the R26DsRedR; CRUSH-GFP; and Nestin-Cre alleles showed efficient GFP knockdown...gene editing. Dr. Masahito Ikawa has created a GFP reporter plasmid for scientists to validate the efficacy...identified a family of GFP proteins in the cephalochordate Branchiostoma floridae, named bfloGFPs. They went on...mutagenesis libraries or to insert heterologous genes, reporters, or other markers into a target genome. They did...and demonstrate that they can successfully create GFP fusion proteins with a variety of genes across the...enabled scientists to engineer a wide variety of GFPs with diversity in fluorescence brightness, intensity...
  10. Plasmids 101: Repressible Promoters

    Type
    Blog Post
    Published
    Dec. 20, 2022, 2:15 p.m.
    ...stage-specific promoter and design a UAS reporter construct, the reporter will only be expressed where and/or...UAS to examine the expression of reporter genes, or to combine reporter expression from one promoter with...QUAS driven expression by ~3,300-fold in Drosophila cells and ~24,000-fold in human HeLa cells as compared...Church lab uses this system to control expression of GFP.)  To turn this inducible system into a repressible...
  11. Why Add Sucrose? Improved Yields for Adeno-associated Virus Preparation

    Type
    Blog Post
    Published
    Dec. 13, 2018, 1:14 p.m.
    ...following sucrose treatment. Moreover, several reports have shown that cells treated with sucrose or other...of sucrose improve AAV2 yields approximately 1.8-fold without affecting cell viability. This effect appears...endocytosis of a fluorescent dye and transduction of GFP-expressing AAV particles we did not observe any difference...
  12. When is a Monomer not a Monomer? The Top Three Ways Your Favorite Fluorescent Protein Oligomerizes in Cells

    Type
    Blog Post
    Published
    April 19, 2016, 2:30 p.m.
    ...Enhanced Green Fluorescent Protein (GFP/EGFP) for a transcriptional reporter or as a general cytoplasmic label...remain unaware that EGFP/GFP is prone to forming noncovalent dimers. This property of EGFP can lead to significant...to use truly monomeric FPs. EGFP and other GFP family members (superfolder, Emerald, CFP, YFP, BFP, Cerulean...contributed by guest blogger Erik L. Snapp. Stop using EGFP/GFP for fusion proteins! Despite multiple studies ...in the world, is not inert. In all seriousness, EGFP/GFP has a real nontrivial propensity to noncovalently...designated mEGFP, mVenus, etc. A word of caution is needed because FPs not derived from GFP, i.e. the ...However, if you fuse your protein of interest (POI) to GFP to study the protein's behavior in cells, in solution...
  13. The Fluorescent Vegetables in Aptamer Soup

    Type
    Blog Post
    Published
    Jan. 29, 2019, 2:27 p.m.
    ...poor folding and thermal instability at 37°C (Ouellet et al., 2016) and requires a tRNA scaffold to improve...aptamers able to bind to a small molecule derivative of GFP called 3,5-difluoro-4-hydroxybenzylidene imidazolinone...Broccoli increases its fluorescence by about 1.8-fold, and may be a better choice for imaging than the...complex and the entire aptamer can hybridize and fold. (Alam et al., 2017). Yellow fluorescent aptamers...growth as RNA biology, we are looking forward to reports on the next additions to aptamer soup! References...that was more thermally stable, exhibited less misfolding, and was consequently brighter than Spinach. ... Matthew D. Disney, and Samie R. Jaffrey. "A superfolding Spinach2 reveals the dynamic nature of trinucleotide...
  14. Hot Plasmids: Summer 2024

    Type
    Blog Post
    Published
    Aug. 27, 2024, 1:15 p.m.
    ...capture module (SpyTag-GFP nanobody) assembled on beads. C: Micrograph of H1.8-GFP nucleosomes collected...In MagIC-cryo-EM, target proteins (expressed as a GFP fusion in this proof-of-concept study) are captured...SpyTag-SpyCatcher linkers and spacer proteins ending with a GFP nanobody (Figure 1). This enrichment streamlines ...) 3D model of the obtained structure of the H1.8-GFP-bound nucleosome. Images adapted from Arimura et ...Integrase Gene Editing (PASSIGE), their previously-reported technique for precisely integrating large DNA ... integration efficiency of 23%, a more than four-fold improvement over the wild-type enzyme. Find optimized...
  15. Split Fluorescent Proteins for Studying Protein-Protein Interactions

    Type
    Blog Post
    Published
    May 3, 2022, 1:15 p.m.
    ...Chang-Deng Hu Green sfGFP Split super-folder GFP, our most-requested GFP(1-10) and GFP(11) Versatile protein...Commun. 2016 Bo Huang spGFP Split superpositive GFP Split-superpositive GFP reassembly is a fast, efficient...base FP (for example, EBFP2(1-10) can be used with GFP(11)). Some of the articles linked below only provide...Blue EBFP2 EBFP2(1-10) and Capri(1-10) for use with GFP(11) Multiplexed labeling of cellular proteins with... Kamiyama Cerulean Cerulean(1-10) for use with GFP(11) Multiplexed labeling of cellular proteins with... (abundant in eukaryotes) A Near-Infrared BiFC Reporter for In Vivo Imaging of Protein-Protein Interactions...green-yellow or orange-red fluorogen A split fluorescent reporter with rapid and reversible complementation. Tebo...
  16. Hot Plasmids: Fall 2024

    Type
    Blog Post
    Published
    Nov. 21, 2024, 2:15 p.m.
    ...gene disruption in M. abscessus  Bioluminescent reporter of mechanical forces   Epitope tag antibody ...Western Blot for Anti-V5 [IPI-SV5-Pk1]. Addgene Report, https://doi.org/10.57733/addgene.l0ulu4. Hanke...considerably faster, with expression levels comparable to GFP during early embryogenesis (Figure 3). mScarlet-I3...through the middle of each embryo are shown, comparing GFP, wrmScarlet (mScarlet), and the new mScarlet3 and...doi.org/10.1128/jb.00335-23.  Bioluminescent reporting of mechanical forces with PILATeS By Emily P. ... reaction (Figure 5). The researchers used the reporter to visualize biologically relevant forces at focal... focal adhesion marker paxillin (visualized with GFP). Reprinted with permission from Zhong et al, 2024...
  17. 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...maximum is reported as 603 nm, while the emission maximum is 675 nm. mCarmine is monomeric, 4-5 fold brighter... ACE system: A versatile in vivo fluorescent reporter for rapid quantification of base-editing and Cas9...editing tools, the Reuben Harris lab has deposited a reporter plasmid that allows for rapid fluorescence-based... out a frame-shift mutation within the mCherry reporter. Quantification of editing efficiencies simply...containing rat APOBEC1. Finally, they show that the ACE reporter can also quantify Cas9 cleavage, thus exhibiting...editing activities. Click here to find the ACE reporter plasmid! Martin et al., Nucleic Acids Research...
  18. Quick Guide to Near-Infrared Fluorescent Proteins

    Type
    Blog Post
    Published
    Oct. 5, 2021, 1:15 p.m.
    ...molecular brightness (Table 1).  NIR reporters and biosensors NIR reporters can tell us about cellular events...normalization to fluorescence of co-transfected EGFP. e Originally reported as a monomer16, IFP2.0 was later found... state-of-the-art NIR FPs can be used similar to GFP-like probes by supplying a single gene to cells. ...crosstalk-free three-color imaging with green and red GFP-like FPs (Shcherbakova et al., 2016), as well as ...higher apparent cellular brightness than previously reported widely used dimeric iRFPs (Table 1). In general...protein-protein interactions, we recommend using NIR split reporters based on miRFPs (Shcherbakova et al., 2016), since...E., Sivanesan, D. & Michnick, S.W. An infrared reporter to detect spatiotemporal dynamics of protein-protein...
  19. 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...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...quantum yield of 0.54) and mScarlet-H with M164H (2-fold improvement in photostability compared to mScarlet...off-target cutting, and they found that HF-BE3 showed 37-fold less off-target editing than BE3, with only a slight...reagents shared via Addgene. Narayan S, et al. Cell Reports. 2017. PubMed PMID: 28813671 Listen to the podcast...along with EGFP while retaining an emission spectrum that is easily separable from that of EGFP. This makes...
  20. Fluorescent Protein Travel Awards - Protein Variants, a Serotonin Sensor, and an Artificial Leaf Replica System

    Type
    Blog Post
    Published
    June 4, 2019, 1:02 p.m.
    ..., Bernach plans to use a suite of fluorescent reporters. Bacteria containing unstable fluorescent proteins...colonizer, labelled with a constitutively fluorescent reporter can also be used to track how one population responds...using TIMER and an unstable fluorescent protein reporter under the control of promoters that control cell...fluorescent protein topics page Get the basics on GFP Find microbiology blog posts Resources on Addgene.org... the TIMER growth rate bioreporter. During protein maturation, the bioreporter spontaneously changes from...decreased in protein abundance, possibly due to misfolding. But measuring variants one at a time is time...variant library is monitored by fusing the variants to eGFP followed by an internal ribosomal entry site and...
Showing: 21 - 40 of 46 results