转移酶

Although the biological significance of DNA methylation has been recognized to some extent, the mechanisms of DNA methylation regulation and of the establishment of tissue-specific DNA methylation pattern in somatic cells are still unclear, since the knowledge of the enzymes responsible for de novo DNA methylation and demethylation of DNA is very limited and up to now only two functional DNA methyltransferases in mammals have been cloned.

目前，虽然对DNA甲基化的作用已有一定认识，但DNA甲基化的调节以及发育过程中组织特异的DNA甲基化谱的建立机制还不清楚。问题主要在于对催化重新甲基化和去甲基化反应的酶的了解很少。至今仅克隆出两种有功能的哺乳动物DNA甲基转移酶。

The article reviews the advanced research on screening sheepbreeds with high resistance against fasciolosis. Screening sheep breeds with high resistance against fasciolosis has been tested by measuring parameter of plasma such as packed cell volume, mean corpuscular volume, mean corpuscular hemoglobin concen tration, glutamate dehydrogenase, gamma glutamyl transferase and aspartate trans ferase and percent take of metacercariae. High resistance of Indonesian thin tail sheep against Fasciola gigantica has been confirmed. The mechanism of high res istance and the time of killing Fasciola gigantica has also been described.

本文综述了抗片形吸虫病绵羊品种的研究概况，通过红细胞压积、红细胞平均体积、红细胞平均血红蛋白浓度、血清谷氨酸脱氢酶、γ谷氨酰胺转移酶、天冬氨酸转氨酶等血液学参数，囊蚴感染成活率的测定等方法来筛选抗片形吸虫病的绵羊品种，研究证明印度尼西亚细尾绵羊对大片吸虫感染具有较高的抵抗力，并概述了其抗虫感染的机制及杀虫作用时间。

These metabolomic findings were substantiated by proteomic experiments demonstrating differential expression of 3-oxoacid transferase, the key enzyme for ketolytic energy production.

这些代谢发现被蛋白组学实验证实，后者证明3－酮酸转移酶－解酮和能量产生的关键酶，差异表达。

Objective: To confirm the nucleolar localization of telomerase-regulation associated protein-human N-acetyltransferase-like protein and its associated functions.

目的：探讨端粒酶调节相关蛋白－乙酰转移酶样蛋白核仁定位的分子基础及相关功能。

Pharmacodynamics experiments indicated that the drug obviously degraded the content of Cholesterol,Triglycerides,glutamic pyruvic transaminase and Maleic Dialdehyde in the Alcoholic fatty liver of rats and mice treated with by oral administration, it also degraded the content of glutamic oxalacetic transaminase, r-GLU,alkaline phosphatase and increased the content of Albumin and Superoxide Dismutase in the Alcoholic fatty liver of rats, and remarkably reduced depressant effect of the mice'centra nerve.

药效学实验表明，经预防灌胃给药，可以显著降低酒精性脂肪肝大鼠和小鼠，总胆固醇、甘油三酯、谷丙转氨酶、丙二醛含量，降低酒精性脂肪肝大鼠谷草转氨酶、γ-谷氨酰基转移酶、碱性磷酸酶含量，增加白蛋白和超氧化物歧化酶含量。

The effects of capsaicin on glutathione S-transferase and Na(superscript +)-K(superscript +)-ATPase of Plutella xylostella were tested with conventional methods in laboratory.

采用常规生化方法测定了辣椒碱对小菜蛾体内谷胱甘肽S-转移酶和Na-K-ATP酶活性的影响。

The experiment research indicates: contrasting with thecontrol groups, Bushen Huoxue Huatan Prescription has the following functions: 1. improving the praxiology function of model rats, 2. improving the activity in cholineacetyl-transferase in hippocampus tissue, 3. increasing the expression of NOS in hippocampus region of cortex, 4. promoting the expression of the synapse P3, in hippocampus region of cortex, 5. reducing obviously the apoptosis number of brain nerve cell .

实验研究表明：与对照组比较，补肾活血化痰方具有：1、改善动物行为学功能；2、提高海马组织胆碱乙酰转移酶活性；3、增加皮质及海马区一氧化氮合酶的表达；4、促进皮质海马区突触素蛋白P_(38的表达；5、显著降低脑神经细胞的凋亡数目。

Dot1 binding to chromatin occurs normally in the absence of H2B-K123 ubiquitylation, suggesting that ubiquitylation does not regulate enzyme recruitment but does regulate the processive activity of the histone methyltransferase.

Dot1结合到染色质通常出现在H2B－K123没有泛素化的状态，暗示泛素化并不调节酶的募集，但调节组蛋白甲基转移酶后续作用的活性。

One pt at the 30,000-mg/day dose level experienced reversable, asymptomatic grade III elevation of gamma glutamyl transferase and grade II elevation of alkaline phosphatase during a second cycle.

一个病人在第二个疗程用到每天3万毫克时出现了可逆性的3级咖玛gultamyl转移酶升高，和2级碱性磷酸酶升高。但没有临床症状。三个病人治疗两个疗程后停止了治疗。

To evaluate the effects of combined salt tolerant mechanisms, PEAMT gene from Salicornia herbacea was introduced into the transgenic tobacco containing CMO by Agrobacterium-mediated transformation.

实验中以农杆菌介导法向转CMO(盐角草胆碱单加氧酶编码基因)的烟草株系中转入盐角草磷酸乙醇胺N-甲基转移酶基因。

According to the clear water experiment, aeration performance of the new equipment is good with high total oxygen transfer coefficient and oxygen utilization ratio.

曝气设备的动力效率在叶轮转速为120rpm～150rpm时取得最大值，此时氧利用率和充氧能力也具有较高值。

The environmental stability of that world - including its crushing pressures and icy darkness - means that some of its most famous inhabitants have survived for eons as evolutionary throwbacks, their bodies undergoing little change.

稳定的海底环境─包括能把人压扁的压力和冰冷的黑暗─意谓海底某些最知名的栖居生物已以演化返祖的样态活了万世，形体几无变化。