1) Methy halide transferase
卤代甲烷-甲基转移酶
2) halogenated methane
卤代甲烷
1.
A study of thermodynamic properties of halogenated methane by the method of chemical bond parameter function
用键参数函数法研究卤代甲烷的热力学性质
2.
Molecular structural parameters including inductive effect index(∑I),equilibrium electronegativity of atom(XE),total electron of atom nuclear external(∑e),total bond length of substituents to center atom(∑d) and electronegativity margin for all substituents(ΔX) were used model the 13C chemical shift of 45 halogenated methane.
利用描述电子效应的诱导效应指数(∑I)、原子的平衡电负性(XE)和反映核外电子云变形程度的总电子数(∑e)、各取代基到中心原子的化学键键长总和(∑d)以及各取代基电负性的和差值(ΔX)等参数对45个卤代甲烷化合物中的碳原子结构进行表征,并与其13CNMR谱化学位移建立了优良的定量结构-波谱关系模型:δC=-7403。
3.
A correlation was investigated between the boiling points and molecular structure of halogenated methanes, and a new method was developed to calculate and predict the boiling points of halogenated methanes.
探讨了卤代甲烷的沸点与其分子结构之间的关系 ,发展了一种既能计算卤代甲烷沸点、又能预测未知卤代甲烷沸点的方法 。
3) halomethane
[,hæləu'meθein]
卤代甲烷
1.
Effect of Electronegativity and Polarizability on the C 1s Core Ionization Energies of Halomethanes;
原子电负性和极化度对卤代甲烷C 1s电子电离能的影响
2.
The electrostatic effect constants for the substituents in an aromatic system were used firstly to study the bond dissociation enthalpy (BDE) of a halomethane system Y-CHnX3-n (n=0,1,2 and 3; Y=H,F,Cl,Br and I; X=F,Cl,Br and I).
将芳环上取代基的电子效应参数引入卤代甲烷,以卤代甲烷分子Y-CHnX3-n(n=0～3;Y=H,F,Cl,Br,I;X=F,Cl,Br,I)中Y—C键的标准键焓EYs-C与中心C原子相键连原子的场/诱导效应之和ΣFi、共轭效应之和ΣRi以及诱导偶极之和Σ(α×F)为参数,建立了一个定量估算卤代甲烷分子中Y—C键离解能(BDE)的通用模型,BDE(Y—C)=57。
3.
It is observed that the removal efficiencies and the sonolysis rate constants of three halomethanes after 1h ultrasonic irradiation fitted the following increasing order:CHCl3< CHBrCl2<CCl4,and the degradation of halomethanes studied followed the pseudo-first-order kinetics model,respectively.
以饮用水中痕量氯仿、四氯化碳和一溴二氯甲烷3种卤代甲烷为目标化合物,采用超声辐照技术研究它们在不同条件下的去除效果。
4) halomethanes
卤代甲烷
1.
Modeling the Δ_fH_m~θ of halomethanes based on support vector machines;
基于支持向量机的卤代甲烷Δ_fH_m~θ模型的构建
2.
Modeling Δ_fH_m~θ based on AM1 quantum chemistry parameters of halomethanes in radial basis function neural network;
基于AMl量化参数的卤代甲烷Δ_fH_m~θRBF—NN模型的构建
3.
Chemical Reactions of Laser Ablated Ti Atom with Halomethanes in Gas Phase;
金属Ti原子与卤代甲烷的气相反应研究
5) methyltransferase
[,meθil'trænsfəreiz]
甲基转移酶
1.
Whether DNA methyltransferase 3B (DNMT3B) is dere gu lated in hepatocellular carcinoma cell lines is still unclear.
为揭示DNA甲基转移酶3B(DNMT3B)在肝癌中是否参与了肿瘤的发生,应用Westernblotting及细胞免疫化学方法分析DNMT3B蛋白在人的正常肝细胞株、肝癌癌旁细胞株及肝癌癌细胞株中的表达。
2.
This article briefly discusses plant DNA methyltransferase, the mode and the loci of Methylation and the epigenetic phenomenon originated by DNA methylation.
简要论述了植物DNA甲基转移酶、甲基化方式、发生位置及DNA甲基化所引起的表观遗传现象。
3.
The m7G46 modification is produced by a specific m7G46 tRNA methyltransferase.
催化tRNA分子46号位鸟苷酸的7号位N原子甲基化修饰的酶被命名为tRNA(m7G46)甲基转移酶。
6) DNA methyltransferase
甲基转移酶
1.
Molecular cloning and sequence analysis of the Rana tigrina ranavirus(RTV) DNA methyltransferase gene;
虎纹蛙病毒甲基转移酶基因的克隆和分析
2.
Objective To investigate the activity and mRNA expression of DNA methyltransferase(DNMT) in gliomas and the effects of chemotherapy and radiotherapy on them.
目的 了解DNA甲基转移酶在星形细胞瘤中的活性和DNMTmRNA表达水平及放、化疗对它的影响。
3.
Both methylation levels of Jurkat before and after TPL disposal were analyzed by n-MSP; The expression of APC gene, DNA methyltransferase 1 (DNMT1), DNMT3A and DNMT3B were analyzed by RT-PCR; DNA ploid analytical method was used to analyze the effect that TPL would bring on the cell life cycle of the target cell line.
方法采用nMSP和DNA克隆测序检测多种恶性血液病细胞株APC基因的甲基化状态;采用MTT法检测TPL对APC基因高甲基化的人急性淋巴细胞白血病细胞系Jurkat细胞增殖、活力的影响;应用流式细胞仪DNA倍体分析法探讨TPL对Jurkat细胞周期的影响;nMSP法检测药物作用前后APC甲基化状态变化;RT-PCR法检测APC、甲基转移酶DNMT1、DNMT3A、DNMT3B基因mRNA的表达;Westren Blot蛋白免疫印迹法检测APC蛋白的表达。
补充资料：N-甲基转移酶抑制剂
分子式：
CAS号：
性质： 能够抑制N-甲基转移酶活性的一类化合物。N-甲基转移酶是一种参与由去甲基肾上腺素合成肾上腺素反应的酶。目前已在放线菌MD736-C6发酵液中发现一种能够非特异性抑制兔肺N-甲基转移酶的抑制剂四氢吡啶戊二烯。
CAS号：
性质： 能够抑制N-甲基转移酶活性的一类化合物。N-甲基转移酶是一种参与由去甲基肾上腺素合成肾上腺素反应的酶。目前已在放线菌MD736-C6发酵液中发现一种能够非特异性抑制兔肺N-甲基转移酶的抑制剂四氢吡啶戊二烯。
说明：补充资料仅用于学习参考，请勿用于其它任何用途。
参考词条