L-Methionine 63-68-3
Core Biological Functions of L-Methionine Protein Synthesis Precursor: As an essential amino acid, L-Methionine is a fundamental building block for protein synthesis, participating in the formation of structural proteins (e.g., muscle fibers) and functional proteins (e.g., enzymes, antibodies) in organisms. It initiates the translation process of protein synthesis by acting as the N-terminal amino acid of nascent peptide chains. Methyl Group Donor: The methylthio group in L-Methionine can be activated to form S-adenosylmethionine (SAM), a universal methyl donor in biological systems. It participates in over 100 methyltransferase-catalyzed reactions, regulating the synthesis and metabolism of nucleic acids (DNA/RNA methylation), lipids (cholesterol biosynthesis), neurotransmitters (epinephrine, choline synthesis), and hormones (thyroid hormone activation), thereby influencing gene expression, cell signaling, and metabolic balance. Antioxidant Defense: L-Methionine is a precursor for glutathione (GSH) synthesis—after conversion to cysteine via transsulfuration, it combines with glutamate and glycine to form GSH, a key intracellular antioxidant. GSH scavenges reactive oxygen species (ROS), protects cell membranes from oxidative damage, and maintains the activity of antioxidant enzymes (e.g., glutathione peroxidase). Lipid Metabolism Regulation: It promotes fatty acid oxidation and inhibits fat accumulation in the liver by participating in the synthesis of carnitine (a molecule that transports fatty acids into mitochondria for energy production). This helps prevent fatty liver disease and regulates cholesterol metabolism by facilitating the conversion of homocysteine to cysteine, reducing the risk of hyperhomocysteinemia-related cardiovascular issues.
Send product request
Other supplier products
 |
DL-Methionine | DL-Methionine, chemically namedDL-2-amino-4-(methylthio)butanoic acid, is a racemic mixture composed of equimolar amounts of L-methionine and D-met... |
 |
High purity L-lysine monohydrochloride | In industrial production and application, the following physicochemical properties are the core quality control indices for L-lysine monohydrochlor... |
 |
L-leucine Supply price | L-leucine is an essential amino acid, which means it cannot be synthesized by the human body and must be obtained through diet. Dietary Sources Ani... |
 |
N-Acetyl-L-Cysteine Manufacturer | N-Acetyl-L-Cysteine is a derivative of the amino acid L-cysteine and serves as a precursor to glutathione, a powerful antioxidant. NAC has a wide r... |
 |
DL-Alanine 302-72-7 | DL-Alanine’s uses span multiple fields, leveraging its amino acid properties and cost-effectiveness (it is often cheaper to produce than pure... |
