L-Methionine
L-Methionine is a critical precursor for the synthesis of glutathione (GSH), the body’s primary intracellular antioxidant, through the transsulfuration pathway:
It is first converted to S-adenosylmethionine, then to homocysteine, and finally to cysteine (via cystathionine β-synthase and γ-lyase). Cysteine combines with glutamate and glycine to form GSH.
GSH scavenges reactive oxygen species (ROS, e.g., superoxide anions, hydrogen peroxide) and lipid peroxides, protecting cell membranes, proteins, and DNA from oxidative damage. It also regenerates other antioxidants (e.g., vitamin C, vitamin E) and detoxifies xenobiotics (e.g., heavy metals, drugs) in the liver by forming soluble conjugates for excretion.
L-Methionine supplementation enhances GSH levels, particularly in tissues with high oxidative stress (e.g., liver, kidneys, muscles), reducing the risk of oxidative stress-related diseases (e.g., liver cirrhosis, neurodegenerative disorders, aging-related damage).
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L-Methionine in Pharmaceutical and Medical Applications |
In pharmaceuticals, L-Methionine is used for therapeutic purposes and as a pharmaceutical excipient, leveraging its metabolic and antioxidant prope... |
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L-Threonine |
L-Threonine is generally recognized as safe (GRAS) by regulatory bodies like the FDA when used in food at typical fortification levels. Its use mus... |
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Sucralose |
Product Name:SucraloseMolecular Weight: 397.63Molecular Formula: C12H19Cl3O8CAS Number: 56038-13-2EINECS Number: 259-952-2Appearance: White to off-... |
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Sucralose |
Sucralose is a high-sweetness agent obtained by replacing the hydroxyl groups at positions 4, 1', and 6' of sucrose molecules with chlorine atoms. ... |
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L-Methionine |
Chemical and Physical Properties of L-Methionine L-Methionine has the molecular formula C₅H₁₁NO₂S and a molecular weight of 149.21. Its chemical s... |
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