Objectives: To clone and express the S-adenosyl-L-methionine synthetase gene.
目的：克隆与表达大肠杆菌s -腺苷甲硫氨酸合成酶的基因。
AIM: To investigate the protective effects of S-adenosyl-L-methionine (SAM) on alcoholic liver diseases.
目的：观察s -腺苷- L -甲硫氨酸(SAM)对乙醇性肝损伤的预防作用。
The L-homoserine lactone hydrochloride was synthesized from L-methionine using both one-pot method and two-step method.
从L-蛋氨酸出发，分别采用“一锅法”和两步法探讨了L-高丝氨酸内酯盐酸盐的合成。
The influences of twelve amino acids on S-adenosyl-L-methionine(SAM) production by Saccharomyces cerevisiae were investigated.
对清酒酵母高密度发酵生产S-腺苷-L-蛋氨酸（SAM）代谢过程中的相关氨基酸进行了考察。
Theyprovided a chemical evidence for evaluating the role of L-methionine in theprevention of mercury, cadmium and lead poisoning.
为评价以L-蛋氨酸预防汞、镉和铅中毒提供了化学依据。
The present invention relates to microorganisms and processes for the efficient preparation of L-amino acids such as L-methionine.
本发明涉及有效制备L-氨基酸如L-甲硫氨酸的微生物和方法。
The fermentation kinetics of S-adenosyl-L-methionine (SAM) producing Saccharomyces cerevisiae HYS98 was studied through chemostat cultivation.
通过恒化培养对S-腺苷甲硫氨酸（SAM）产生菌酿酒酵母HYS98发酵动力学进行了研究。
The production and the stability of S-adenosyl-L-methionine are presented. Clinical application and the prospect of S-adenosyl-L-methionine are also analyzed.
介绍了S-腺苷甲硫氨酸的制备方法及稳定性研究现状，并对其临床应用及市场前景进行了分析。
The results showed that feeding L-methionine could obviously improve the accumulation of SAM, and both the biomass and SAM yield relied heavily on different feeding strategies.
实验发现补加前体L-蛋氨酸能明显促进S-腺苷-L-蛋氨酸的积累。同时还发现不同的补加策略对菌体浓度以及S-腺苷-L-蛋氨酸的产量和浓度有不同的影响。
Levetiracetam was prepared from L-methionine via reduction-dethiomethylation, esterification, ammonolysis, amidation and intramolecular cyclocondensation reaction with 44.6% overall yield.
以蛋氨酸为原料经还原脱硫甲基化、酯化、氨解、酰胺化及分子内缩和成环4步反应合成得到了左乙拉西坦，总收率44.6%。
By contrast, L-methionine increased the level of methylation and thus reduced the expression of the gene in animals with loving mothers, and led to fear, anxiety and a heightened response to stress.
与之相反，L -甲硫氨酸增加了甲基化水平，从而减弱了正常老鼠中糖皮质激素受体基因的表达，导致了恐惧、焦虑和对压力的强烈反应。
AEC could inhibit the growth of asparagus (asparagus officinalis L.), this inhibition could be partially relieved by lysine or by methionine.
氨乙基- L -半胱氨酸AEC可抑制芦笋愈伤组织的生长，此抑制作用可被赖氨酸或甲硫氨酸部分解除。
Objective To observe the effects of L methionine deprived total parenteral nutrition on the serum free amino acids of Wistar rats.
目的观察去甲硫氨酸全肠外营养对大鼠血清氨基酸谱等的影响。
Objective To observe the effects of L methionine deprived total parenteral nutrition on the serum free amino acids of Wistar rats.
目的观察去甲硫氨酸全肠外营养对大鼠血清氨基酸谱等的影响。
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