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    gshgssg--gsh-assay-kit-colorimetric-ab239709.pdf

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Signal Transduction Metabolism Amino Acids
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GSH+GSSG / GSH Assay Kit (Colorimetric) (ab239709)

  • Datasheet
  • SDS
  • Protocol Booklet
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Glutathione Standard Curve.

    Key features and details

    • Detection method: Colorimetric
    • Platform: Microplate reader

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    Overview

    • Product name

      GSH+GSSG / GSH Assay Kit (Colorimetric)
      See all Glutathione kits
    • Detection method

      Colorimetric
    • Product overview

      GSH+GSSG / GSH Assay Kit (Colorimetric) (ab239709) provides a convenient, colorimetric method for analyzing either total glutathione or the reduced form glutathione alone using a microtiter plate reader.


      The assay is based on the glutathione recycling system by DTNB and glutathione reductase. DTNB and glutathione (GSH) react to generate 2-nitro-5-thiobenzoic acid which has a yellow color. Therefore, GSH concentration can be determined by measuring absorbance at 412 nm.


      The generated GSSG can be reduced back to GSH by glutathione reductase, and GSH reacts with DTNB again to produce more 2-nitro-5-thiobenzoic acid. Therefore, the recycling system dramatically improves the sensitivity of total glutathione detection.


      The kit includes the 5-Sulfosalicylic acid (SSA) for the removal of proteins from samples and for the protection of GSH oxidation and g-glutamyl transpeptidase reaction.


      The kit can quantify glutathione from 1-100 ng/well in a 200 mL reaction. For detecting lower glutathione concentrations, such as in blood samples, increasing reaction time will generate stronger signal.


      The kit can also specifically detect the reduced form of glutathione (GSH) by omitting the glutathione reductase from the reaction mixture. The sensitivity for detecting the reduced form of glutathione (without recycling system) is 100 times lower than detecting the total glutathione.


       

    • Notes

      This product is manufactured by BioVision, an Abcam company and was previously called K261 Glutathione Colorimetric Assay Kit. K261-100 is the same size as the 100 test size of ab239709.

    • Platform

      Microplate reader

    Properties

    • Storage instructions

      Store at -20°C. Please refer to protocols.
    • Components 100 tests 2000 tests
      Glutathione Reaction Buffer 1 x 100ml 20 x 100ml
      Glutathione Reductase 2 x 25µl 40 x 25µl
      Glutathione Substrate (DTNB) 2 vials 40 vials
      GSH Standard (lyophilized, MW 307) 2 x 1mg 40 x 1mg
      NADPH Generating Mix (lyophilized) 2 vials 40 vials
      Sulfosalicylic Acid (SSA, 1 gram) 1 unit 20 units
    • Research areas

      • Signal Transduction
      • Metabolism
      • Amino Acids
      • Cell Biology
      • Other Antibodies
      • Oxidative Stress
      • Metabolism
      • Pathways and Processes
      • Metabolic signaling pathways
      • Amino acid metabolism
      • Metabolism
      • Pathways and Processes
      • Redox metabolism
      • Oxidative stress
      • Metabolism
      • Pathways and Processes
      • Redox metabolism
      • Antioxidants
    • Relevance

      Glutathione is a small peptide composed of three amino acids: cysteine, glutamic acid, and glycine and is present in tissues in concentrations as high as one millimolar. It contains an unusual peptide linkage between the amine group of cysteine and the carboxyl group of the glutamate side chain. Glutathione is involved in detoxification, it binds to toxins, such as heavy metals, solvents, and pesticides, and transforms them into a form that can be excreted in urine or bile. It is also an important antioxidant, helping to maintain the -SH groups of proteins in their reduced form. Chronic functional glutathione deficiency is associated with glucose 6-phosphate dehydrogenase deficiency, immune disorders, an increased incidence of malignancies, and in the case of HIV disease, probably accelerated pathogenesis of the disease. Acute manifestations of functional glutathione deficiency can be seen in those who have taken an overdosage of acetaminophen (paracetamol). This results in depletion of glutathione in the hepatocytes, leading to liver failure and death.
    • Alternative names

      • Glutathione
      • GSH
      • Oxidised glutathione
      • Reduced glutathione

    Images

    • Glutathione Standard Curve.
      Glutathione Standard Curve.

      Various amounts of standard glutathione was added to the glutathione reaction and incubated for 10 min according to the kit instructions. Absorbance was measured at O.D. 405 nm.

    Protocols

    • Protocol Booklet

    Click here to view the general protocols

    Datasheets and documents

    • SDS download

    • Datasheet download

      Download

    References (3)

    Publishing research using ab239709? Please let us know so that we can cite the reference in this datasheet.

    ab239709 has been referenced in 3 publications.

    • Han S  et al. Targeting ATF4-dependent pro-survival autophagy to synergize glutaminolysis inhibition. Theranostics 11:8464-8479 (2021). PubMed: 34373753
    • Sambon M  et al. Dibenzoylthiamine Has Powerful Antioxidant and Anti-Inflammatory Properties in Cultured Cells and in Mouse Models of Stress and Neurodegeneration. Biomedicines 8:N/A (2020). PubMed: 32962139
    • Manzoor R  et al. Synergistic Neuroprotective Effect of Endogenously-Produced Hydroxytyrosol and Synaptic Vesicle Proteins on Pheochromocytoma Cell Line Against Salsolinol. Molecules 25:N/A (2020). PubMed: 32276517

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