目的：研究甲硫氨酸脑啡肽对机体免疫监督功能的影响。
AIM: To study the host immune surveillance functions by the neuropeptide methionine enkephalin (met-enk).
同型半胱氨酸是甲硫氨酸代谢过程中产生的一种含硫氨基酸。
Homocysteine is a sulfur-containing amino acid resulting from metabolic process of methionine.
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：克隆与表达大肠杆菌s -腺苷甲硫氨酸合成酶的基因。
Objectives: To clone and express the S-adenosyl-L-methionine synthetase gene.
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 present invention relates to microorganisms and processes for the efficient preparation of L-amino acids such as L-methionine.
富硒茶粗蛋白质中胱氨酸、甲硫氨酸的含量随茶叶含硒量提高而增加。
Amino acid, especially Cys and Met of tea protein was increased with increasing selenium content of tea.
半胱氨酸的含量最低，只占总量的1.18%，其次为组氨酸和甲硫氨酸。
Cystine content was the lowest and only had 1.18%. The next was histidine and methionine.
目的探讨肿瘤细胞的甲硫氨酸依赖性在提高肿瘤化疗疗效方面的作用及意义。
Objective To study the implication of tumor cells' methionine dependence in promoting the effects of chemotherapy.
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。
AIM: To investigate the protective effects of S-adenosyl-L-methionine (SAM) on alcoholic liver diseases.
抗性系还表现出对DL-甲硫氨酸的交叉抗性和对天冬氨酸族其它几种氨基酸的抗性。
Simultaneously, ME rB exhibited cross resistance to DL methionine, as well as Threonine, Lysine, Isolecine, and Leucine separately or combinedly.
同型半胱氨酸是一种含硫氨基酸，是甲硫氨酸在机体几乎所有组织中的代谢中间产物。
Homocysteine (Hcy) is a thiol-containing compound that is generated during the metabolism of methionine almost in all tissue.
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 fermentation kinetics of S-adenosyl-L-methionine (SAM) producing Saccharomyces cerevisiae HYS98 was studied through chemostat cultivation.
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 production and the stability of S-adenosyl-L-methionine are presented. Clinical application and the prospect of S-adenosyl-L-methionine are also analyzed.
甲硫氨酸合酶是同型半胱氨酸代谢的关键酶，其活性缺失可能会导致同型半胱氨酸蓄积及甲硫氨酸缺陷。
Methionine synthase is a key enzyme in homocysteine metabolism. The defects of methionine synthase activity could result in hyperhomocysteinemia and methionine auxotrophy.
而当甲硫氨酸摄入量较低时，同型半胱氨酸又通过一条包含叶酸和维生素b12的途径再循环生成甲硫氨酸。
When methionine intake is low, homocysteine is recycled back to methionine in a process involving folic acid and vitamin B12.
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。
AEC could inhibit the growth of asparagus (asparagus officinalis L.), this inhibition could be partially relieved by lysine or by methionine.
多种肿瘤细胞表现出对外源性甲硫氨酸的依赖，人们对于限制甲硫氨酸后肿瘤细胞生长受到抑制这一现象进行了很多的研究。
Many human cancer cell lines have absolute requirements for exogenous methionine, an essential amino acid. A number of researchers have attempted to exploit the methionine dependence of tumors.
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。
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.
方法以N -保护的色氨酸、甲硫氨酸、天门冬氨酸和C -保护的苯丙氨酸为原料，采用混合酸酐法合成了CCK四肽，总收率38.5%。
METHODS The CCK-4 peptides were condensed from N-protected Trp, met, Asp and C-protected Phe by Mixture anhydrides method, resulting in total yield of 38.5%.
方法将接受拉米夫定治疗的188例患者根据治疗时间进行分组，采用实时荧光PCR方法定量检测各组患者血清HBVDNA水平和酪氨酸-甲硫氨酸-天冬氨酸-天冬氨酸（YMDD）变异。
Methods Serum samples from 188 chronic hepatitis B patients with lamivudine therapy were collected and quantitatively tested with real-time PCR for HBV DNA and YMDD mutations.
方法将接受拉米夫定治疗的188例患者根据治疗时间进行分组，采用实时荧光PCR方法定量检测各组患者血清HBVDNA水平和酪氨酸-甲硫氨酸-天冬氨酸-天冬氨酸（YMDD）变异。
Methods Serum samples from 188 chronic hepatitis B patients with lamivudine therapy were collected and quantitatively tested with real-time PCR for HBV DNA and YMDD mutations.
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