酰化

The types of histone methyltransferases, the relationship between methylation of Lysine 9 of H3 and the formation of heterochromatin, gene regulation in euchromatin, and that with DNA methylation, were mainly introduced.

主要阐述了组蛋白甲基转移酶的类型，组蛋白H3中第9位赖氨酸甲基化与异染色质的形成、常染色体中基因表达的调控，以及与DNA甲基化之间的关系，说明了组蛋白甲基化与组蛋白乙酰化、磷酸化的相互关系，指出组蛋白甲基化对维持细胞各种状态的平衡起到极其重要的作用。

METHODS: Chemotactic chamber assay was used to investigate the regulatory role of formyl peptide receptor like-1 (FPRL1) in the chemotaxis of PMNs in response to LPS and PD.

用趋化小室方法测定虎杖甙对LPS刺激下多形核白细胞趋化活性及转染了甲酰化肽样受体（FPRL1）基因的293细胞（FPRL1/293）趋化活性的影响。

Methods Naloxone was synthesized starting from oxidation of thebaine, followed by hydrogenation, acylation, cyanidation, O-demethylation, hydrolyzation and N-allylation. The alternative method of O-demethylation, methane sulfonic acid/DL-methionine and hydrobromic acid were investigated.

在以蒂巴因为原料，经氧化、氢化、酰化、氰化、去氧甲基、水解、N-烯丙基化得到纳洛酮的合成路线中，分别采用甲磺酸／DL-甲硫氨酸和氢溴酸代替三溴化硼进行去氧甲基化和后续水解反应。

The key intermediate 3-methylaminopiperidine was synthesized from 3-methylaminopyridine by two methods,formylation and lithium aluminium hydride reduction or condensation with triethyl orthoformate and sodium borohydride reduction,and then hydr...

以3-氨基吡啶为原料，分别通过甲酰化反应、氢化铝锂还原和原甲酸三乙酯缩合、硼氢化钠还原两种方法得到3-甲胺基吡啶，最后经催化氢化得到中间体3-甲胺基哌啶。

The key intermediate 3- methylaminopiperidine was synthesized from 3-methylaminopyridine by two methods, formylation and lithium aluminium hydride reduction or condensation with triethyl orthoformate and sodium borohydride reduction, and then hydrolysis.

以3-氨基吡啶为原料，分别通过甲酰化反应、氢化铝锂还原和原甲酸三乙酯缩合、硼氢化钠还原两种方法得到3-甲胺基吡啶，最后经催化氢化得到中间体3-甲胺基哌啶。

The alternative method of O-demethylation,methane sulfonic acid/DL-methionine and hydrobromic acid were investigated.

方法在以蒂巴因为原料，经氧化、氢化、酰化、氰化、去氧甲基、水解、N-烯丙基化得到纳洛酮的合成路线中，分别采用甲磺酸/DL-甲硫氨酸和氢溴酸代替三溴化硼进行去氧甲基化和后续水解反应。

Such structural complexity is further enhanced by O-acetylation, esterification, lactonization, as well as other forms of substitutions, reflecting significance of carbohydrates in cell recognition.

细胞表面上糖缀合物的糖链经常以多/寡聚体形式存在，并且结构复杂，常常大量表达唾液酸、糖醛酸、硫酸化糖基等酸性糖，并发生O-乙酰化、酯化和内酯化等修饰。

The amino acid sequence similarity of C3d between human, bovine, goat, boar, golden hamste,rmouse,brown rat,Macropus, hare,Gallus is 80.4%,94.7%,96.9%,82.8%,81.1%,80.6%,80.2%,71.0%,75.2% and60.3% respectively..

通过生物学软件分析发现绵羊C3d蛋白有2个蛋白激酶C磷酸化位点，1个酪蛋白激酶Ⅱ磷酸化位点，1个酪氨酸激酶磷酸化位点，1个十四酰化位点。

In bioconv ertion experiment for spiramycin of No.5 transformant, the bioconversion product was analysed with TLC, bioautography, HPLC and mass spectrum.Results showed that the bioconvert product is propionyspiramycin. Propionyl acylase gene was l ocolized on 0.53 kb insert DNA fragment of recombinant pasmid pLJM95. Analysis result of DNA sequence showed that content of G+C is 68.2% for 0.53kb insert DNA fragment .

以No.5转化子对螺旋霉素进行生物转实验，其转化产物经薄层层析，生物显迹，高压液相色谱及质谱分析表明，与标准丙酰螺旋霉素一致，这说明 No.5 转化子具有将螺旋霉素生物转化为丙酰螺旋霉素的能力，丙酰化酶基因位于重组质粒，pIJM95 0.53kb 插入DNA片段上。

However, the rhodium process with oil compounds encounter problems due to the thermal sensitivity of the high boiling point oxo-products, which cannot be isolated from the homogeneous reaction mixture by distillation.

采用~1H-NMR和FT-IR谱分析了油醇的氢甲酰化反应产物，证实了其结构为甲酰基十八碳醇，且甲酰基的位置可以在主碳链的中间或端位。

We have no common name for a mime of Sophron or Xenarchus and a Socratic Conversation; and we should still be without one even if the imitation in the two instances were in trimeters or elegiacs or some other kind of verse--though it is the way with people to tack on 'poet' to the name of a metre, and talk of elegiac-poets and epic-poets, thinking that they call them poets not by reason of the imitative nature of their work, but indiscriminately by reason of the metre they write in.

索夫农 、森那库斯和苏格拉底式的对话采用的模仿没有一个公共的名称；三音步诗、挽歌体或其他类型的诗的模仿也没有——人们把&诗人&这一名词和格律名称结合到一起，称之为挽歌体诗人或者史诗诗人，他们被称为诗人，似乎只是因为遵守格律写作，而非他们作品的模仿本质。

The relationship between communicative competence and grammar teaching should be that of the ends and the means.

交际能力和语法的关系应该是目标与途径的关系。