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Showing: 41 - 60 of 148 results
  1. Plasmid Tools for Microbiome Studies

    Type
    Blog Post
    ...the RBS and allows translation of the reporter gene resulting in GFP signal. With the addition of standards...a ribosome binding site (RBS) followed by a reporter gene. The hairpin blocks translation by sequestering...study the microbiome by using engineered genetic tools and reporter microbes. Let’s take a look at a few ...well as a selectable marker and a desired genetic payload (ex: GFP). Thus, cells can be both sorted using...antibiotic resistance markers, promoters, and inducible gene expression systems in bee gut microbiome species...or preparation, and deliver CRISPR components for gene disruption or CRISPRi. While designed to study the...address these questions, biologists often use next-generation sequencing. Sequencing the 16S rRNA reveals the...
  2. Luciferase Plasmid Collection

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    Collection
    ...common choice in assays ranging from use as a reporter gene in vitro and in vivo to use in biosensors. The... A splicing reporter that contains an intron in the middle of the Firefly luciferase gene.. TREAT (3( ...your regulatory element or gene of interest into to create a luciferase reporter. Unless otherwise noted,...Multiple Multi-luciferase reporter vector including transcriptional reporters for NF-kb, TGF-b, c-Myc, ...plants Daniel Voytas Return to Top Reporter Constructs Already know what gene or regulatory element that you...Root 105533 pAAV.CMV.Luc.IRES.EGFP.SV40 Firefly CMV AAV expression of firefly luciferase and GFP James Wilson...bioluminescent reporters. Plasmid...
  3. Fluorescent Protein Guide: Biosensors

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    Collection
    ...cyclic AMP) Signaling reporter island (SiRI) with GFP-based fluorescent reporter cAMPr Spatial Multiplexing...DsRed1-E5 as a reporter for mitochondrial oxidative stress A novel MitoTimer reporter gene for mitochondrial...Calcium erGAP3 (GFP-Aequorin Protein) for imaging of Ca+ dynamics in endoplasmic reticulum GFP-Aequorin Protein...FlincG3 (GFP-based cGMP sensor) for imaging in C. elegans neurons Using a Robust and Sensitive GFP-Based ...maturation reporter (pmRFP-LC3) Dissection of the autophagosome maturation process by a novel reporter protein...Multicoloured voltage reporters (QuasAr2) Bright and fast multicoloured voltage reporters via electrochromic...Tsien Calcium Turquoise genetically encoded calcium sensor (GECI) that reports with lifetime and intensity...
  4. What's New in CRISPR - Winter 2018

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    Blog Post
    ... SHERLOCK (specific high-sensitivity enzymatic reporter unlocking) to detect single molecules of RNA or...plasmids Tagging human transcription factors with GFP Kevin White’s lab recently deposited a set of CRISPR...plasmids to tag human transcription factors with GFP. As part of the Encyclopedia of DNA Elements (ENCODE...proteins for optogenetic control of CRISPR-Cas9. By combining AcrIIA4, a Streptococcus pyogenes Cas9 inhibitor... a few of the new CRISPR plasmids available at Addgene. We will still periodically focus on specific CRISPR...adapted for detecting SNPs. Learn more from this Addgene blog post Read the paper in Science Find the...the Cas14 plasmids Anti-CRISPR proteins for optogenetic control of CRISPR-Cas9 Anti-CRISPR proteins that...
  5. Quick Guide to Near-Infrared Fluorescent Proteins

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    Blog Post
    ...NIR FPs can be used similar to GFP-like probes by supplying a single gene to cells. Still in bacteria, ...molecular brightness (Table 1).  NIR reporters and biosensors NIR reporters can tell us about cellular events...brightness than previously reported widely used dimeric iRFPs (Table 1). In general, the monomeric state of...normalization to fluorescence of co-transfected EGFP. e Originally reported as a monomer16, IFP2.0 was later found..., which do not produce BV, an additional gene coding for heme oxygenase should be supplied (Baloban et...crosstalk-free three-color imaging with green and red GFP-like FPs (Shcherbakova et al., 2016), as well as ...protein-protein interactions, we recommend using NIR split reporters based on miRFPs (Shcherbakova et al., 2016), since...
  6. Hot Plasmids - June 2019 - Optogenetics, Acoustic Reporter Genes, microRNAs, and the CRISPR-Cas9 system CHIME

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    Blog Post
    ... developed four acoustic reporter gene (ARG) plasmids to better monitor gene expression in vivo using ...plasmids at Addgene. Liu Q et al., Neuron. 2019. PubMed PMID: 30704911. Acoustic reporter genes for noninvasive...contributed by Lukas Morgan  Listen to the acoustic reporter gene podcast segment In recent years, scientists ...rely heavily on fluorescent protein genes. These optical reporters have limited deep-tissue performance...demonstrates engineered gas vesicles as the first reporter genes using ultrasound and provide a major benefit...29300010. miRNA reporter vectors shed new light on mechanisms of miRNA-mediated gene regulation Article...collection of reporter plasmids is amenable to Golden Gate assembly for turning the single-input reporters into...
  7. Plasmids 101: Control Plasmids

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    Blog Post
    ...expression of Gene X using shRNA expressed from a plasmid   Figure 1: Expression Level of Gene X The results... level of Gene X in cells treated with Plasmid A is similar to the expression level of Gene X in the untreated...plasmid that constitutively expresses a reporter protein (e.g., GFP or luciferase) that is either co-transfected...backbone itself on gene expression in your target cells. In experiments employing gene targeting or genome...trying to repress a gene, your control might be a system where expression of that gene is knocked out completely... shRNA targeting human Gene X in Plasmid A is the decreased expression of Gene X. Ergo the positive control...targeting human Gene X. The non-targeting control also assesses any effects of the general introduction ...
  8. Multicolor Animals: Using Fluorescent Proteins to Understand Single Cell Behavior

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    Blog Post
    ...deletion of one or several of these genes permits the expression of genes farther downstream in the construct... two tandem sets of genes aligned head-to-head and the deletion of one of the gene pairs. Brainbow 2.0... from the default GFP (green) to RFP, CFP, or YFP fluorescence. In Brainbow 2.1, GFP is tagged with a ...recombination in this mouse generates cells that randomly express either nuclear GFP, membrane CFP, cytoplasmic...Brainbow uses a Cre/lox system to label neurons. Genes encoding the fluorescent proteins are organized ...organized in tandem with a single promoter, but only the gene directly following the promoter is expressed. Cre-mediated... which uses Cre to trigger the inversion of two genes aligned head-to-head. Another variation, Brainbow...
  9. Fluorescent Proteins 101: Monitoring Cell Mobility Using Fluorescent Proteins

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    Blog Post
    ... to track where GFP labelled B cells were in mounted slices of these organs. These GFP labelled cells ...enabled by fluorescent proteins The optimization of GFP and its derivatives by the late Roger Tsien changed...stimulus. Using an epifluorescence microscope and GFP fusion proteins controlled by promoters specific ...the immune lineage, scientists could easily track GFP expressing cells. For example, by harvesting lymph...transgenic mice expressing fluorescent protein reporter constructs in the immune lineage. By specifically... the infiltration of neutrophils expressing LysM-GFP (green) into a draining lymph node after infection...using 2-photon microscopy as this hasn't been well reported for many fluorescent proteins. Additional fluorescent...
  10. Fluorescent Proteins 101: Fluorescent Biosensors

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    Blog Post
    ...molecule it detects. This change then generates a reporter signal. Reporter signals may be electrochemical or...biosensors To focus on a particular gene or protein, check out our gene-specific biosensors. These constructs...light-based, with luminescent and fluorescent reporters being especially popular. We’ll give you an introduction...biosensors as an example. Many calcium biosensors include GFP fused to calmodulin (CaM) and the chicken myosin ...glutamate sensor pCMV(MinDis).iGluSnFR. Picking your reporter Don’t forget about the other end of the biosensor...Visualization Resources on Addgene.org Find Biosensor Plasmids Find Optogenetics Plasmids Visit the Fluorescent... OR enzyme activity. Small molecule biosensors Addgene has many sensors that measure the concentration...
  11. Hot Plasmids and Viral Preps - September 2021

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    Blog Post
    ...systems allow researchers to understand bacterial gene clusters that produce useful natural materials, ...capable of robust expression of high G+C content genes, as validated through monitoring the expression ...plasmids use “Cas9-mediated adenosine transient reporter for editing enrichment”, or XMAS-TREE, to identify...coding sequence for a green fluorescent protein (GFP). The success of the A-to-G conversion could be seen...through the success of the change in expression of GFP, for the stop codon should have changed from “TGA...cytometry is used to sort populations by mCherry and GFP expression to check for ABE’s. b) Quantification ...human mRNA binding proteins with 10 guide RNAs per gene. The lab modified the lentiviral backbone to encode...
  12. Fluorescent Proteins 101: GFP Fusion Proteins - Making the Right Connection

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    Blog Post
    ...the limitations is the size of GFP: ~240 amino acids or about 28 kDa. GFP and its homologues have a beta-barrel...fluorescent protein (GFP) from Aequorea victoria and its variants are genetically encoded fluorescent ...interference is known as steric hindrance. For instance, GFP may occlude catalytic sites or obstruct binding sites...post-translational modifications. Despite these potential issues, GFP has been used successfully in countless fusion proteins... an inert light emitting module, any tendency of GFP to homodimerize should be avoided because it will...the linker sequence short In the early days of GFP applications, many were concerned with steric hindrance...fluorescent proteins derived from Aequorea victoria GFP sticks out and can be considered a linker (figure...
  13. Bikard Lab - CRISPR Repression Collection

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    Collection
    ...levels for these two reporters simultaneously. By fusing sfGFP and/or mCherry to genes of interest, it is...expression of two genes without cross‐talk. (A) Schematic of the strain expressing two reporters and dCas9 under...attachment sites. The levels of the two reporters, mCherry and sfgfp in this case, can be controlled using...to bind on the chromosome. When dCas9 binds to a gene, it blocks the progression of the RNA polymerase...enables robust, noiseless knockdown of bacterial genes. Molecular Systems Biology, 14(3):e7899. doi: 10.15252... the tracrRNA sequence (not shown). (B) Relative GFP and RFP concentration given relatively to the non‐targeting...carrying two CRISPR guides. The first one binds to sfgfp with either 0, 10, 11, 14, or 20 matching nucleotides...
  14. Popular Retroviral Vectors and Their Uses in Scientific Research

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    Blog Post
    ...among other things) gene delivery, generating pluripotent stem cells, and developing gene therapies for monogenic...and lentiviral vectors that are used for gene regulation, gene of interest expression, knockout, and screening...gamma-Retroviral Transfer Vectors   Expressing your gene of interest pMKO.1 GFP (Plasmid #10676) Retroviral vector for...for cloning and expressing your gene of interest with GFP expression.  Cloning and expressing RNAi pMKO...technology CAG-GFP-IRES-CRE (Plasmid #48201) This retroviral vector from the Gage lab encodes GFP and Cre-recombinase...Experimental uses include: Cre-dependent gene expression, gene knockout, and selection marker removal. ...Expressing your gene of interest pLenti-puro (Plasmid #39481) You can clone your gene of interest into...
  15. Hot Plasmids - August 2020

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    Blog Post
    ...stem cells By Jennifer Tsang CRISPR gene interference (CRISPRi) and gene activation (CRISPRa) are great ways...GABA-ergic interneurons. These include mDlx-GFP, hDlx-FLEX-GFP, hDlx-Flex-dTomato, mDlx-GCaMP6f, hDlx-GiDREADD-dTomato...into the hPSC genome using AAV1 and contain an EGFP reporter. Expression of the dCas9-KRAB activator or dCas9...the plasmids at Addgene! A new tool for synthetic biology uses CRISPRi to control gene expression. This...nucleus and modulate transcription of the mCitrine gene. mCherry is constitutively expressed. Cells are ...selectivity and found that the best motif was from the Lck gene. For marking microtubules of mammalian cells, the... ways to modulate the expression of nearly any gene via specific guide RNA (gRNA) sequences. But these...
  16. An “elegans” Approach to Better CRISPR/Cas9 Editing Efficiency

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    Blog Post
    ...epitopes, such as GFP (Paix et al., 2014). A further development of this approach reported in 2017 uses the... Mello lab also reported that modifying the 5’ modification of oligos used to generate linear dsDNA repair...where his group focuses on gene regulation in nematode molting and spermatogenesis. His group also builds ... one of the model organisms which I use to study gene regulation during developmental processes, CRISPR...drug resistance (Chen et al., 2013), fluorescence (GFP; Tzur et al., 2013), or rescue of mutant phenotypes...Craig Mello’s lab – used inactivation of the unc-22 gene as their selection marker (Kim et al., 2014). Meanwhile...approaches may become even more powerful following a report that one can use linear repair templates (ie. PCR-derived...
  17. 10 Great Guest Posts We're Thankful For

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    Blog Post
    ...viral replication and transcription as well as reporter genes. To learn how you can use minigenomes in your...repression of your target gene, activation and repression of different genes in a single cell, and localization...Favorite Fluorescent Protein Oligomerizes in Cells GFP oligomerization can lead to misleading artefacts ...Lab at MIT developed plasmid based systems that report the order in which specific chemical inputs are...recombinase-based state machines could potentially be used to report upon and/or engineer “temporally ordered biochemical...derived from Zika virus and, upon binding, produce reporter proteins. These toehold switches can be used to... them in action. AAV: A Versatile Viral Tool for Gene Expression in Mammals Adeno-associated viruses (...
  18. Fluorescent Proteins 101: Aptamer Fluorophores

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    Blog Post
    ...nature of GFP fluorescence to create an improved fluorescent aptamer system. Knowing that GFP’s  structure...Protein Activity with GFP Resources at Addgene.org Find the Spinach Plasmids at Addgene Find Broccoli Plasmids...Resources on the Addgene Blog Tips for Using FRET in Your Experiments Learn more about GFP Controlling Protein...highly customizable in terms of how they actually “report” as biosensors. Making aptamers glow The flexibility...increase its fluorescence, essentially mimicking GFP.  Though the aptamer, called Spinach, required longer...and used in assays for over half a century; the Addgene blog has an excellent primer and tips from experts...can be created in many different ways, but the general premise is that an aptamer in its unbound state...
  19. New Viral Vectors - Fall 2024

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    Blog Post
    ...viral prep pAAV-CAG-GFP AAV9-X1.1 Controls Edward Boyden New serotype pAAV-hSyn-EGFP AAV PHP.eB Controls...services collection or check out Addgene's Data Hub to see viral vector reports from other users. And don't...AAV9. You can now target these cells with AAV-CAG-GFP packaged in AAV9-X1.1!  We also have eight new AAV-PHP.eB...preps available in the Addgene viral vector repository! This includes the first Addgene prep packaged in the... AAV1 Optogenetics Karl Deisseroth New serotype pAAV-hSyn-hChR2(H134R)-EYFP AAV2 Optogenetics Karl Deisseroth... Brian O'Neill.  More resources on the Addgene blog Addgene's Data Hub What is a Virus (and a Viral Vector...other new AAV vectors as well — including next-generation biosensors for GABA, dopamine, serotonin, and...
  20. Fluorescent Proteins 101: Photoactivatable Fluorescent Proteins

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    Blog Post
    ...irreversible PA-FP reported was PA-GFP. PA-GFP was derived from Jellyfish (Aequorea victoria) GFP (wtGFP) by mutating...mutation in PA-GFP generates a chromophore population that is more neutral, causing PA-GFP to display almost...example, by engineering PA-GFP tagged to a mitochondrial matrix protein (mito-PAGFP) the Youle Lab was able...Multi-Color Imaging Catch Up on Your GFP Background Resources at Addgene.org Find Photoactivatable FPs in ...the neutral to the anionic form, which allows PA-GFP to exhibit up to a 100-fold increase in fluorescence...when illuminated with blue light (1). Similar to PA-GFP, scientists later developed red fluorescent PA-FPs...in vivo imaging models perfer the PA-RFPs over PA-GFP. Another class of irreversible PA-FPs are the photoconvertible...
Showing: 41 - 60 of 148 results