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  1. Viral Vectors 101: Calcium Sensors

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    Blog Post
    ...newly developed calcium sensors. Selecting a calcium sensor Genetically encoded calcium indicators (GECIs...unusually fast calcium dynamics, whereas non-neuronal systems tend to have slower, but larger, calcium changes... to use a calcium sensor that is most sensitive to your expected range. For example, calcium in the ER...would want a low affinity calcium biosensor, so that the (1) binding of calcium, (2) allosteric rearrangements...FRET-based calcium reporter derived from troponin C. It is engineered with a reduced number of calcium binding...’ve got a live one (calcium sensors for in vivo studies) There are several calcium reporters specially...Calcium is arguably one of the most important metal ions in biology (sodium and potassium are up there...
  2. PEI Calculator for Planning AAV Packaging Transfections

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    Blog Post
    ... ratios right, you need to do a few calculations. This calculator can do the math for you and it’s simple... download the PEI calculator for AAV packaging Use the PEI transfection calculator for AAV packaging ...spreadsheet will calculate the following μg of each plasmid needed per dish or stack. Calculations are based...corresponding column in the calculator spreadsheet: We hope that this calculator will make it easier to plan...for AAV packaging, considering using this PEI Calculator. AAV packaging typically requires transfecting...whole experiment And here’s the equation the calculator uses to give you the μl needed of each plasmid...experiments. Let us know what you think about the calculator in the comments section below. References 1....
  3. EXPRESs Plasmids for Plasmodium falciparum

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    ...screening in Plasmodium falciparum.... Plasmid Collections EXPRESs Plasmids Plasmodium falciparum EXPRESs Plasmids...Plasmids for Plasmodium falciparum You may also like... Gavin Wright Lab plasmids This is a collection of plasmids...by the blood stage of the malaria parasite, P. falciparum . Please see the following reference for more...essential for erythrocyte invasion by Plasmodium falciparum. Crosnier C et al., Nature. 2011 Nov 9;480(7378...
  4. Hot Plasmids - June 2020 - Barcoded CRISPR Library, Sparse Cell Labeling, Calcineurin Reporter, and DNA Staining Dye Alternative

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    ...reporter for calcineurin activity in yeast Article contributed by Leah Schwiesow Calcineurin is a protein...intracellular calcium levels within the cell. When levels of Ca2+ are high in the cell, calcineurin dephosphorylates...attractive drug target. Calcineurin reporters allow scientists to measure calcineurin dynamics and can serve...identify new antifungals that target calcineurin. Current calcineurin gene reporters are based on the bacterial...intermediate (d), and sparse (e) labeling of the calcium indicator, GCaMP6f, in the Drosophila optic lobe...dephosphorylates the protein CZI, which in turn binds to calcineurin-dependent response elements (CDREs) and drives...drives gene expression. Because calcineurin is required for virulence in pathogenic fungi, it is an attractive...
  5. Fluorescent Protein Guide: Biosensors

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    ...31. Gordon Fishell Calcium GCaMP-X genetic encoded calcium sensor Improved calcium sensor GCaMP-X overcomes...Xiaodong Liu Calcium GCaMP5 genetically encoded calcium sensor Optimization of a GCaMP calcium indicator ...GCaMP calcium indicators. Nat Methods. 2009 Dec;6(12):875-81. Loren Looger Calcium NEMO calcium sensors...Schreiter Calcium GCEPIA1-SNAP ER for sensing ER calcium A genetically encoded ratiometric calcium sensor...Target Description Article PI Calcium jGCaMP8 Fast Genetically Encoded Calcium Indicators (Constitutive or...Encoded Calcium Indicators. Janelia Research Campus. Online resource. 2020 GENIE Project Calcium jGCaMP7...High-performance GFP-based calcium indicators (Constitutive or Cre-dependent) High-performance calcium sensors for imaging...
  6. Retrograde AAV viral preps

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    ...jRGECO1a Calcium Sensor Kim , GENIE 100854 pAAV.Syn.NES-jRGECO1a.WPRE.SV40 Syn jRGECO1a Calcium Sensor ...pGP-AAV-syn-jGCaMP7s-WPRE Syn GCaMP7s Calcium sensor Kim 104489 pGP-AAV-syn-jGCaMP7b-WPRE Syn GCaMP7b Calcium sensor Kim 104491...Cre-dependent Calcium sensor Kim 104493 pGP-AAV-syn-FLEX-jGCaMP7b-WPRE Syn GCaMP7b, Cre-dependent Calcium sensor...Cre-dependent Calcium sensor Kim 104496 pGP-AAV-CAG-FLEX-jGCaMP7f-WPRE CAG GCaMP7f, Cre-dependent Calcium sensor...GCaMP7f Calcium sensor Kim 104492 pGP-AAV-syn-FLEX-jGCaMP7f-WPRE Syn GCaMP7f, Cre-dependent Calcium sensor...GP-AAV-syn-jGCaMP8s-WPRE Syn GCaMP8s Calcium sensor GENIE 162375 pGP-AAV-syn-jGCaMP8m-WPRE Syn GCaMP8m Calcium sensor GENIE 162376...GCaMP8f Calcium sensor GENIE 162377 pGP-AAV-syn-FLEX-jGCaMP8s-WPRE Syn GCaMP8s, Cre-dependent Calcium sensor...
  7. Biosensor AAV Preps

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    ..., including calcium sensors, under the control of various promoters. Sensor Green Calcium Sensors GCaMP8...soma-GCaMP6 Twitch2B Yellow Calcium Sensors jYCaMP1 axon-jYCaMP1 Red Calcium Sensors CaMPARI jRCaMP1 jRGECO1...viral service encoding biosensor tools, including calcium sensors. Viral...jRGECO1 sRGECO Far-Red/NIR Calcium Sensors HaloCaMP1a HaloCaMP1b NIR-GECO Acetylcholine Sensors iAChSnFR..._ACh3.0 Syn GRAB_ACh3.0 none Constitutive 9 Li Calcium Sensor: GCaMP8f 162376 pGP-AAV-syn-jGCaMP8f-WPRE...CAG jGCaMP8f none Constitutive 1, 9, rg* Looger Calcium Sensor: GCaMP8s 162374 pGP-AAV-syn-jGCaMP8s-WPRE...CAG jGCaMP8s none Constitutive 1, 9, rg* Looger Calcium Sensor: GCaMP8m 162375 pGP-AAV-syn-jGCaMP8m-WPRE...
  8. Hot Plasmids: FRET-Based Biosensors

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    ...transfer (FRET)-based calcium biosensors. Perhaps most notably, the Twitch calcium sensors, which are available...-affinity for calcium binding and developed a version of the protein with as few calcium-binding sites...been working on genetically encoded indicators of calcium and other small molecules since the very beginnings...engineered sensors were designed to replace synthetic calcium dyes, which had been in use since the 1980s. “Synthetic...they shift from "off" to "on" in the presence of calcium. This color change can be observed under a microscope...Griesbeck and his colleagues began by isolating a calcium-binding protein, troponin C (TnC), from muscle ...Ratiometric imaging for beginners Griesbeck says his calcium indicators can be used in mouse, Drosophila, C....
  9. Early Career Researcher Toolbox: Free Online Molecular Biology Tools

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    Blog Post
    ...ratio calculators Lab math calculators These calculators can help you with common calculations performed...lab. Molarity calculator Promega's Biomath Calculators Primer resuspension calculator (sign-in required... Cloning ligation reaction calculators These links can help you calculate how much insert and backbone...required.)  DailyCalcs Science Calculator app for iPhone Reagent and Data Repositories These links can help...assembly, or In-Fusion cloning.  NEB Ligation Calculator: This tool works for any cloning method. You ...
  10. Viral Vectors 101: Biosensors

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    Blog Post
    ...ions, calcium is by far one of the most popular, with dozens of sensors developed for it. Calcium triggers...the presence of calcium. This includes FRET-based sensors such as Twitch. While calcium is king in the ...The calcium is strong here….I can sense it….sound like a plot to an biology scifi movie? Or maybe it’...such as norepinephrine, or an electrolyte such as calcium. This varied component, which we will refer to ...triggers muscle contraction, and calcium channels are activated for neuronal action potentials; it’s an ion... disciplines! Most of the sensors designed for calcium generate a fluorescent output, which will turn ... on the biology you are studying. For example, calcium dynamics in the cytosol and sarcoplasmic reticulum...
  11. Fluorescent Proteins 101: Fluorescent Biosensors

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    Blog Post
    ... of a given ion - we’ll use calcium biosensors as an example. Many calcium biosensors include GFP fused...region RS20. When calcium is absent, the construct does not fluoresce; when present, calcium induces CaM/RS20...like arabinose or hydrogen peroxide or ions like calcium and zinc. Some biosensors contain a single fluorescent... biosensors from Robert Campbell’s lab display calcium-dependent increases in fluorescence of up to 11,000...common class of biosensors. Blue flame “cameleon” calcium sensors created by Roger Tsien’s lab contain two...proteins (a FRET pair) separated by CaM and M13. When calcium binds, it triggers CaM/M13 interaction that increases...Examples include blue flame mitochondria-targeted calcium sensor CMV-mito-GEM-GECO1  and blue flame extracellular...
  12. Immunology Research Plasmids and Resources

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    Collection
    ... beta CALC2, CGRP-II, CGRP2, FLJ30166 CALCR calcitonin receptor CRT, CTR, CTR1 CALCRL calcitonin receptor-like...CD88 CALCA calcitonin-related polypeptide alpha CALC1, CGRP, CGRP-I, CGRP1, CT, KC, MGC126648 CALCB calcitonin-related...S5.7, TAPA1, TSPAN28 CHP calcium binding protein P22 SLC9A1BP CHP2 calcineurin B homologous protein 2 -...suppression of tumorigenicity 2 - STC1 stanniocalcin 1 STC STC2 stanniocalcin 2 STC-2, STCRP TAC1 tachykinin,...SLAMF2, hCD48, mCD48 CHP calcium binding protein P22 SLC9A1BP CHP2 calcineurin B homologous protein 2 -...CMM3, MGC14458, PSK-J3 CHP calcium binding protein P22 SLC9A1BP CHP2 calcineurin B homologous protein 2 -...nuclear factor of activated T-cells, cytoplasmic, calcineurin-dependent 1 MGC138448, NF-ATC, NFAT2, NFATc NFATC2...
  13. Caltech Systemic Capsids

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    Collection
    ... CAG Calcium sensor, Cre-dependent GCaMP Kim , GENIE 104487 pGP-AAV-syn-jGCaMP7s-WPRE Syn Calcium sensor...pGP-AAV-syn-jGCaMP7f-WPRE Syn Calcium sensor GCaMP Kim , GENIE 135632 pAAV-S5E2-GCaMP6f E2 regulatory element Calcium sensor ...pAAV.Syn.NES-jRGECO1a.WPRE.SV40 Syn Calcium sensor RGECO Kim , GENIE 162375 pGP-AAV-syn-jGCaMP8m-WPRE Syn Calcium sensor GCaMP...Biosensors 104491 pGP-AAV-syn-FLEX-jGCaMP7s-WPRE Syn Calcium sensor, Cre-dependent GCaMP Kim , GENIE 104492 ...104492 pGP-AAV-syn-FLEX-jGCaMP7f-WPRE Syn Calcium sensor, Cre-dependent GCaMP Kim , GENIE 104495 pGP-AAV-CAG-FLEX-jGCaMP7s-WPRE...pGP-AAV-CAG-FLEX-jGCaMP7s-WPRE CAG Calcium sensor, Cre-dependent GCaMP Kim , GENIE 104496 pGP-AAV-CAG-FLEX-jGCaMP7f-WPRE...
  14. New and Upcoming Viral Vectors - Spring 2019

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    Blog Post
    ...pAAV-hSyn-mCherry Read on to learn more!  Calcium sensor AAV The GFP-based calcium sensors are single-wavelength ...sensors with intensities that change in response to calcium binding. There are a few versions of these jGCaMP7...brightest resting fluorescence of the GCaMP7 family of calcium sensors and can be used for imaging of small neuronal...variant of jGCaMP7 in AAV1 at Addgene! See all calcium sensor AAV at Addgene. GABA sensor AAV GABA is ... directly imaging GABA have been limited. Like calcium sensors, different iGABASnFR have been developed...pAAV-EF1a-mCherry-IRES-Flpo 55637  AAV1  pAAV-EF1a-Flpo Calcium sensors Plasmid Serotype Name 104496  AAV1...
  15. New and Upcoming Viral Vectors - September 2019

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    ... Biosensor AAV (calcium sensors and GABA sensors) Calcium sensors The latest calcium sensors from Janelia...include: EGFP-expressing AAV for serotype testing Calcium sensors and GABA sensors Optogenetics Recombinases...for monitoring neuronal activity in the form of calcium dynamics. (For more details on this technology,...technology, see our blog post Overview of AAV Encoded Calcium Sensors). We are expanding the inventory of these...pAAV EF1a Nuc-flox(mCherry)-EGFP (112677-AAV5) Calcium Sensors pGP-AAV-syn-jGCaMP7b-WPRE (104489-AAVrg...
  16. Troubleshooting and Optimizing a Western Blot

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    Blog Post
    ... amount of alcohol and decrease the amount of SDS, with a decreased transfer time. Alcohol will slow down...semi-dry transfers, you can adjust the amounts of alcohol and SDS in your transfer buffers. To slow down ...the amount of SDS while decreasing the amount of alcohol. The increased SDS will increase the negative charge...readily with the current.  Pro tip! You need both alcohol and SDS for your proteins to migrate…so don’t try...in an assay, meaning that your normalization calculations will not be correct, and you’ll need to adjust... Increase voltage Increase SDS/decrease alcohol in transfer buffer Small proteins: Over-transferring...Decrease transfer time Decrease SDS/increase alcohol in transfer buffer Mixed proteins: Transferring...
  17. Plasmids 101: Inducible Promoters

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    Blog Post
    ...Plasmid/Kit Alcohol-regulated AlcA promoter AlcR pGGA008 (AlcA) and pGGC011 (AlcR) from red flame...chemically induced promoters include positive inducible alcohol and steroid regulated promoters commonly used in...
  18. The time and cost required to make a plasmid

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    ...Debate of ’18, Blue Flame depositor John Doench calculated the time to make a plasmid. Doench’s lab in the...long does it take in total? While much harder to calculate, in both our 2018 and 2023 poll, most people said...much does it cost to make a plasmid? Doench also calculated the cost of consumable reagents used to make ...up 19.8% in the same time period. For ease of calculations*, let’s split the difference and put scientific...much do repositories help?   Designing precise calculations for any of the numbers in this post is a mathematical...large-scale savings. How large? Using Doench’s calculations and the 2018 numbers for consumable costs, our...
  19. Antibodies 101: ELISA (Enzyme-linked Immunosorbent Assay)

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    ... of enzyme present in the well and is used to calculate the amount of your protein of interest that is...is present. Using a Standard Curve To do that calculation, you’ll need to include a standard curve in your...samples can then be plotted along this line to calculate the protein concentration. Image from Jagarlamudi...an asymptote, you won’t be able to accurately calculate the protein concentration of any experimental ...sure to incorporate the dilution factor in your calculation from OD to protein concentration if that’s the...linear portion of your standard curve, you can calculate the concentration of protein in the experimental...
  20. Great Results Start with Great Standard Curves

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    ... the experiment and use the standard curve to calculate its experimental value. Though it varies from ...enzymatic assays are sigmoidal. Once the trendline is calculated, you can extrapolate the concentration of the...measurements and the trendline y = 0.6561x + 0.019 calculated. The concentration of an unknown sample is determined...standard curve scientists use graphing software to calculate the data’s coefficient of determination, R2. R2...duplicate or triplicate. Replicates allows you to calculate the curve’s coefficient of variation, or %CV. ...mean of all the replicates multiplied by 100. To calculate the %CV of the standard curve, one averages the...
Showing: 1 - 20 of 164 results