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- labile methyl group [医] 活泼甲基
- Assume the geometry of the eclipsed form to be that given by rigidly rotating one methyl group with respect to the other. 假定重叠式的几何形是由一个甲基相对另一个甲基做刚体转动而得。
- The methyl group carbon atom has 6 valence electrons from its bonds to the hydrogen atoms because carbon is more electronegative than hydrogen. 由于碳电负性高于氢，因此甲基中的碳原子具有6个价电子。
- An organic compound,especially ethane,containing two methyl groups. 双甲基的，乙烷一种有机化合物，特别是乙烷，内含有两个甲基
- By adding a methyl group at a critical point, they made a new compound named WBZ_4 that inhibited KIT kinases - but not those from the ABL family. 加入甲基组在一个临界点，他们取得了新的化合物，命名为wbz_4这一抑制激酶试剂盒-而不是那些从a bl的家庭。
- The other, called L-methionine, is a donor of methyl groups. 另一个是L-甲硫氨酸，它可以提供甲基。
- Conclusion Introducing the methyl group or a low alkyl group resulting in the high selectivity and increase of its activity. 结论甲基或低级烷基的引入导致了高选择性,使其活性增大。
- An organic compound, especially ethane, containing two methyl groups. 双甲基的，乙烷一种有机化合物，特别是乙烷，内含有两个甲基
- It may be synthesized directly from ammonia, carbon dioxide, and a donated methyl group; derived from serine; or derived from glycerate 3-phosphate by TRANSAMINATION of glyoxylate. 甘氨酸来源于丝氨酸，或由乙醛酸经转氨作用生成的甘油3-磷酸转化而成。
- From these 13C NMR spectra, we have calculated the ratios of each functional group to methyl group, which agree with the results obtained by 1H NMR quite well, and the mole percentage of saturated and unsaturated fatty acid glycerides in the two oils . 并计算出,上述两种油中所含脂肪酸甘油酯和各种不饱和脂肪酸甘油酯的克分子百分数。 对测得CCH_2C基团质子自旋晶格弛豫时间T_1进行分析后,给出一经验公式来予以拟合,计算结果与测定值吻合。
- Scientists have already found out how the methyl groups are attached. The reverse process of demethylation, however, has been poorly understood so far. 科学家们已经发现甲基团是如何被黏附的了，但是对逆转的去甲基化过程却知之甚少。
- Su(ar)3-9 proteins attach methyl groups to the histone labeled H3 at its ninth amino acid residue, which is a lysine. 9蛋白将甲基加在组蛋白H3的第九位氨基酸残基，也就是赖氨酸残基上，从而使H3组蛋白贴上了个标签。
- Genes are imprinted by the addition of molecules called methyl groups to the gene's DNA. 基因印迹是通过在基因的DNA上链接附加的甲基团（一种分子的名称）达成的。
- They found that a day after the shock, methyl groups were being removed from a gene called calcineurin and added to another gene. 他们发现老鼠在遭受电击一天之后，神经钙蛋白基因中的甲基群就被转移到了其它的基因中去。
- Scientists hae already found out how the methyl groups are attached. The reerse process of demethylation, howeer, has been poorly understood so far. 科学家们已经发现甲基团是如何被黏附的了，但是对逆转的去甲基化过程却知之甚少。
- Education should not be restricted to any one specific age group. 教育不应限制在任何特定的年龄组上。
- Miller and Sweatt argue that in neurons, methyl groups also help to control the exact pattern of protein expression needed to maintain the synapses that make up memories. 米勒和斯威特称，在神经细胞中，甲基群也能够控制蛋白质对信息的传递，从而使得构成记忆的神经突触得以保存。
- The results show that steric hinderance effect of methyl groups in the poly-o-methylaniline is more prominent than induction effect and hyperconjugation. 结果表明,聚邻甲苯胺中甲基的空间位阻效应远大于诱导效应和超共轭效应。
- He broke away from that lawless group years ago. 他在几年前脱离了那个非法团体。
- The synthese, influencing factors, propertyies and applications of four kinds of POSS containing phenyl, amino, epoxy and methyl groups are discussed respectively in this article. 主要介绍了苯基、氨基、环氧基和甲基等4种官能团取代笼型倍半硅氧烷的合成方法及影响因素、性能和应用前景。
