DL-メチオニン

DL-メチオニン 価格

MSDS Information

• Acimetion

DL-メチオニン 化学特性,用途語,生産方法

• 外観

  白色, 結晶～粉末

• 定義

  本品は、次の化学式で表されるアミノ酸である。

• 溶解性

  水にやや溶けやすく、エタノール及びジエチルエーテルにほとんど溶けない。

• 用途

  医薬原料、強化剤、飼料添加物

• 用途

  アミノ酸研究用、D又はL-体の原料。

• 化粧品の成分用途

  ヘアコンディショニング剤、皮膚コンディショニング剤

• 効能

  尿酸性化薬

• 食品源

  メチオニンは肉魚卵乳製品などの動物性タンパク質に豊富に含まれています植物性食品では大豆製品ナッツ種子などがメチオニンの良い供給源となりますバランスの取れた食事を通じて十分な量のメチオニンを摂取することが推奨されます

• 健康影響

  メチオニンの適切な摂取は健康維持において重要です過剰なメチオニン摂取は特定の健康状態においてリスクを高める可能性がある一方で不足は成長障害や肌髪爪の健康問題を引き起こす可能性がありますそのためメチオニンの摂取量は個人の健康状態やニーズに応じて調整することが重要です

• 展望

  近年メチオニンに関する研究はその健康への影響だけでなく様々な病状における役割を探求しています例えばメチオニンの制限が寿命を延ばす可能性があるという研究やがん細胞の成長を抑制する可能性があるという研究もありますこれらの研究はメチオニンが持つ潜在的な治療的価値を示唆しており将来的には新たな治療法の開発につながる可能性があります

• 説明

  Methionine is an α-amino acid with the chemical formula HO₂CCH(NH₂)CH₂CH₂SCH₃. This essential amino acid is classified as nonpolar. This amino-acid is coded by the initiation codon AUG which indicates mRNA's coding region where translation into protein begins.

• 化学的特性

  White crystalline powder

• 天然物の起源

  High levels of methionine can be found in eggs, sesame seeds, Brazil nuts, fish, meats and some other plant seeds; methionine is also found in cereal grains. Most fruits and vegetables contain very little of it. Most legumes are also low in methionine. Racemic methionine is sometimes added as an ingredient to pet foods.

• 使用

  DL-Methionine is sometimes given as a supplement to dogs; it helps keep dogs from damaging grass by reducing the pH of the urine.
  Methionine is allowed as a supplement to organic poultry feed under the US certified organic program.

• 製造方法

  DL-Methionine is prepared by addition of methanethiol to acrolein; by chemical conversion of methylthiopropionic aldehyde.

• 定義

  ChEBI: A sulfur-containing amino acid that is butyric acid bearing an amino substituent at position 2 and a methylthio substituent at position 4.

• 生合成

  As an essential amino acid, methionine is not synthesized de novo in humans, who must ingest methionine or methioninecontaining proteins. In plants and microorganisms, methionine is synthesized via a pathway that uses both aspartic acid and cysteine. First, aspartic acid is converted via β-aspartyl-semialdehyde into homoserine, introducing the pair of contiguous methylene groups. Homoserine converts to O-succinyl homoserine, which then reacts with cysteine to produce cystathionine, which is cleaved to yield homocysteine. Subsequent methylation of the thiol group by folates affords methionine. Both cystathionine-γ-synthase and cystathionine- β-lyase require pyridoxyl-5′-phosphate as a cofactor, whereas homocysteine methyltransferase requires vitamin B12 as a cofactor.

• 生物学の機能

  Together with cysteine, methionine is one of two sulfurcontaining proteinogenic amino acids. Its derivative S-adenosyl methionine (SAM) serves as a methyl donor. Methionine is an intermediate in the biosynthesis of cysteine, carnitine, taurine, lecithin, phosphatidylcholine, and other phospholipids. Improper conversion of methionine can lead to atherosclerosis.
  This amino acid is also used by plants for synthesis of ethylene. The process is known as the Yang Cycle or the methionine cycle.
  Methionine is one of only two amino acids encoded by a single codon (AUG) in the standard genetic code (tryptophan, encoded by UGG, is the other). The codon AUG is also the most common eukaryote "Start" message for a ribosome that signals the initiation of protein translation from mRNA when the AUG codon is in a Kozak consensus sequence. As a consequence, methionine is often incorporated into the N-terminal position of proteins in eukaryotes and archaea during translation, although it can be removed by post-translational modification. In bacteria, the derivative Nformylmethionine is used as the initial amino acid.

• 一般的な説明

  DL-Methionine is an essential amino acid containing sulphur. Methionine consists of an asymmetric carbon and exists as D (dextrogyre) and L (levogyre) optical isomers. The L-methionine is considered as biologically active. The racemic mixture of D and L-isomers forms DL-methionine, which is the commercially available methionine.

• 安全性プロファイル

  Moderately toxic by ingestion and other routes. An experimental teratogen. Experimental reproductive effects. When heated to decomposition it emits toxic fumes of SOx and NOx. See also 1-METHIONINE.

• 純化方法

  Crystallise it from hot water or EtOH. Also purify it by dissolving it in H2O and passing through an Amberlite IR-120 resin (NH4+ form). The eluate is concentrated and then passed through Amberlite IR-4B resin, and this eluate is evaporated to dryness. The residue is washed with EtOH, then Me2CO, dried and recrystallised from aqueous EtOH (colourless plates) [Baddiley & Jamieson J Chem Soc 4283 1954]. [Greenstein & Winitz The Chemistry of the Amino Acids J. Wiley, Vol 3 p 2125 1961, Beilstein 4 IV 3190.]

DL-メチオニン 上流と下流の製品情報

DL-メチオニン 生産企業

Global(1041)Suppliers

DL-メチオニン スペクトルデータ(¹HNMR、¹³CNMR、IR1、IR2、MS、Raman)

59-51-8, DL-メチオニン キーワード