S-Adenosyl-L-methionine (S-Adenosyl methionine) is produced endogenously from methionine and ATP by action of the enzymemethionine adenosyltransferaseand is an important orally active methyl group donor. S-Adenosyl-L-methionine is a dietary supplement with potent antidepressant effects, and has the potential for liver disease and osteoarthritis research^[1][2][3].

S-Adenosyl-L-methionine (Ademetionine) is involved in three main metabolic pathways: 1) methylation, as the principal source of methyl groups in the body; 2) transsulfuration, S-Adenosyl-L-methionine forms S-Adenosylhomocysteine (SAH) and then converted to homocysteine (Hcy) which can be converted to cystathionine then to cysteine and the sulfate (SO4) donated to other metabolic intermediates; and 3) aminopropylation, as S-Adenosyl-L-methionine plays an important role in the synthesis of polyamines which can eventually form and recycle methionine^[2].
In vitro studies using human articular chondrocytes have shown S-Adenosyl-L-methionine-induced increases in proteoglycan synthesis and proliferation rates in rabbits^[2].

Mice lacking methionine adenosyltransferase 1a (Mat1a) have reduced hepatic S-Adenosyl-L-methionine levels and develop oxidative stress, steatohepatitis, and hepatocellular carcinoma (HCC). However, injury and HCC also occur if hepatic S-Adenosyl-L-methionine level is excessive chronically. Thus a normal hepatic S-Adenosyl-L-methionine level is necessary to maintain liver health and prevent injury and HCC^[3].

398.44

Solid

C₁₅H₂₂N₆O₅S

29908-03-0

S-腺苷-L-蛋氨酸

• Others

Escherichia coli

Room temperature in continental US; may vary elsewhere.

4°C, stored under nitrogen

*In solvent : -80°C, 6 months; -20°C, 1 month (stored under nitrogen)

DMSO : 100 mg/mL(250.98 mM;Need ultrasonic)

H₂O : ≥ 43 mg/mL(107.92 mM)

*"≥" means soluble, but saturation unknown.

请根据产品在不同溶剂中的溶解度选择合适的溶剂配制储备液；一旦配成溶液，请分装保存，避免反复冻融造成的产品失效。
储备液的保存方式和期限：-80℃, 6 months; -20℃, 1 month (stored under nitrogen)。-80℃ 储存时，请在 6 个月内使用，-20℃ 储存时，请在 1 个月内使用。