Molecular Characteristics
Complete Specifications
Structural Composition
γ-Glu-Cys-Gly (gamma-glutamyl-cysteinyl-glycine)
Physical Properties
Glutathione (reduced form, GSH) is a naturally occurring tripeptide composed of gamma-linked glutamic acid, cysteine, and glycine. The presence of a free thiol (-SH) group on the cysteine residue contributes to its distinctive chemical reactivity and oxidation–reduction properties under laboratory conditions. In solution, glutathione may oxidize to its disulfide form (GSSG), making protection from light, air exposure, and elevated temperatures important for maintaining reduced-state integrity. Lyophilized storage under dry, cold conditions supports improved stability for research and analytical applications.
Research Applications
Oxidative Stress and Redox Biology Research
Glutathione is utilized as a research compound in studies examining cellular redox balance and antioxidant defense systems. Laboratory investigations focus on its role in:
- Reactive Oxygen Species (ROS) Regulation: Investigation of intracellular mechanisms controlling oxidative stress levels
- Glutathione Peroxidase Pathway Studies: Evaluation of enzymatic systems involved in peroxide detoxification
- Redox Signaling Research: Analysis of thiol-disulfide exchange processes and intracellular signaling cascades
- Cellular Antioxidant Capacity Models: Examination of total antioxidant status within experimental systems
- Detoxification Pathway Regulation: Investigation of phase II conjugation processes involving glutathione
Experimental protocols commonly employ oxidative stress assays, redox biomarker profiling, and enzymatic activity measurements to characterize glutathione-mediated cellular responses.
Liver and Metabolic Research
Glutathione has been extensively studied in research models examining hepatic function and metabolic regulation. Key areas of investigation include:
- Hepatocyte Redox Balance Models: Evaluation of intracellular antioxidant dynamics in liver cell systems
- Xenobiotic Conjugation Studies: Investigation of glutathione-dependent detoxification pathways
- Mitochondrial Function Research: Analysis of oxidative phosphorylation and redox cycling in metabolic tissues
- Lipid Peroxidation Models: Research into oxidative membrane damage and protective mechanisms
- Glucose and Energy Regulation Studies: Examination of redox influence on metabolic signaling pathways
These studies utilize metabolic profiling systems, hepatic cell cultures, and biochemical assays to assess glutathione-related metabolic dynamics.
Immune and Inflammatory Signaling Research
Glutathione has also been explored in research models examining immune cell function and inflammatory signaling pathways, including:
- Cytokine Expression Studies: Evaluation of inflammatory mediator regulation under redox modulation
- Lymphocyte Function Models: Investigation of immune cell activation and oxidative balance
- NF-κB Signaling Pathway Research: Analysis of redox-sensitive transcription factor activation
- Inflammation Resolution Mechanisms: Examination of oxidative stress influence on immune homeostasis
Laboratory protocols assess immune cell signaling, oxidative biomarkers, and inflammatory mediator levels using molecular and cellular techniques.
Cellular Signaling and Detoxification Research
Additional research applications explore glutathione’s influence on intracellular regulatory systems involved in detoxification and cellular stability, including:
- Glutathione S-Transferase (GST) Studies: Investigation of conjugation enzyme activity and xenobiotic metabolism
- Gene Expression Profiling: Analysis of transcriptional responses associated with oxidative defense systems
- Apoptosis and Cell Survival Models: Research into redox-dependent signaling influencing cell viability
- Homeostatic Redox Regulation: Examination of feedback systems maintaining intracellular equilibrium
Research in this domain focuses on understanding how glutathione modulates oxidative balance, detoxification pathways, and cellular signaling networks under controlled experimental conditions.
Laboratory Handling and Storage Protocols
Lyophilized Powder Storage
- Store at –20°C to –80°C in the original, sealed vial
- Protect from light exposure and moisture
- A desiccated storage environment is recommended
- Stability data suggests extended stability when stored at −20 °C or below.
Reconstituted Solution Storage
- Short-term storage: Up to 7 days at 4°C
- Long-term storage: Store at –20°C in aliquots
- Use single-use aliquots to preserve peptide integrity
- Minimize freeze–thaw cycles; single-use aliquots are strongly recommended
Stability Characteristics
Glutathione is a naturally occurring tripeptide with moderate stability in solid form and increased sensitivity to oxidation once in solution. Proper cold storage, protection from light and air exposure, and minimized freeze–thaw cycles help maintain compound integrity. When handled appropriately, Glutathione supports consistent use in biochemical, cellular, and analytical research applications.
Frequently Asked Questions
What is Glutathione?
Glutathione is a tripeptide naturally synthesized within cells. It is widely studied in research environments for its role in maintaining redox balance and protecting cells from oxidative stress.
What is Glutathione commonly researched for?
In experimental and laboratory models, glutathione is studied for:
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Antioxidant pathway regulation
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Reactive oxygen species (ROS) modulation
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Cellular detoxification mechanisms
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Mitochondrial and metabolic signaling research
All applications are exploratory and conducted in controlled research settings.
Is Glutathione naturally occurring?
Yes. Glutathione is naturally present in most living cells and is considered a primary intracellular antioxidant. Synthetic versions used in research replicate this naturally occurring compound.
What is the difference between reduced (GSH) and oxidized (GSSG) glutathione?
Reduced glutathione (GSH) is the active antioxidant form. When it neutralizes oxidative molecules, it can form oxidized glutathione (GSSG). The ratio of GSH to GSSG is often studied as an indicator of cellular redox status.
How is Glutathione supplied?
Glutathione is typically supplied as a lyophilized (freeze-dried) powder or crystalline form in sealed research vials to preserve stability during storage and transport.
How should unreconstituted Glutathione be stored?
Unreconstituted glutathione should be stored:
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Long-term: −20 °C or below
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Short-term: 2–8 °C
Keep containers sealed and protected from light, heat, and moisture, as glutathione is sensitive to oxidation.
How should reconstituted Glutathione be handled and stored?
Once reconstituted:
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Store at 2–8 °C for short-term laboratory use
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Minimize exposure to air and light to reduce oxidation
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Use aliquots to limit repeated freeze–thaw cycles
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Mix gently until fully dissolved
Does Glutathione require a Certificate of Analysis (COA)?
Yes. A Certificate of Analysis (COA) should be available for each batch, verifying identity, purity, and analytical testing results to ensure research quality and traceability.
Is Glutathione FDA-approved?
When sold as a research compound, glutathione is not FDA-approved for diagnostic, therapeutic, or consumption purposes and must be marketed strictly for laboratory research use.
This product is not for human consumption. It is sold strictly for research and educational purposes and is not intended to diagnose, treat, cure, or prevent any disease.
Any clinical data or research information referenced on this page is derived from peer-reviewed scientific literature and official publications. This information is provided for educational reference only and does not constitute medical advice or product claims.
By purchasing this product, you acknowledge that you are a qualified researcher and agree to use it in full compliance with all applicable laws and regulations.
