英语释义

• the organic group of acetic acid (CH3CO-)

片语

acetyl vanillin香草醛乙酸酯

Acetyl bromide乙酰基溴

Acetyl CoA乙酰辅酶a

acetyl fibre乙酰纤维

acetyl value乙酰值

acetyl oxide氧化乙酰

acetyl chloride[有化] 乙酰氯

acetyl acetone乙酰丙酮

acetyl phosphate[有化] 乙酰磷酸

Acetyl Shikonin乙酰紫草根素

英汉例句

• the enzymes in question are histone acetyltransferase (which adds acetyl groups to proteins) and methylated dna-binding protein-2 (which removes methyl groups from dna).

  这两种酶是组蛋白乙酰转移酶（它能给蛋白质添加乙酰基）和甲基化dna结合蛋白-2（它能把dna上的甲基去除）。

• this modification is either the addition of methyl groups to the dna or of acetyl groups to the histones.

  这种改性或者是甲基增至dna中，或者是乙酰基增加到组蛋白中。

• it is broken down via phenylalanine to give acetyl coa and fumaric acid.

  它通过苯丙氨酸降解出乙酰辅酶a和反丁烯二酸。

• it ensures that the h4 histones have plenty of attached acetyl groups, so the dna wrapped around the histone once again becomes available for transcription.

  它保证了h4组蛋白有大量的乙酰基团粘附其上，所以环绕在组蛋白上的dna能再次被翻译。

• specifically, the study describes an acetyl genetic switch that produces memory impairment in aging 16-month-old mice.

  特别是，这项研究描述了一种乙酰基遗传「开关」，这直接导致了一只16个月大的白鼠记忆上的损伤。

• old mice had many fewer acetyl groups at the time that they should have been storing the memory of the shock.

  年纪大的老鼠体内的乙酰群比起幼鼠来要少的多，因此当辅助记忆的基因需要被释放出来的时候年纪较大的老鼠体内却没有足够的乙酰群来「帮忙」，这直接导致了它们无法更好地保持记忆力。

• in additional experiments, the researchers injected a drug into the brains of older mice to counter the drop in acetyl tag attachment, or acetylation.

  在另一个实验中，研究人员给年老的老鼠脑部注入了一种药物来阻止它们脑部乙酰物质的流失，帮助它们的脑部产生乙酰作用，结果完全在研究人员预料之中，辅助记忆的基因发挥了作用，年老的老鼠也可以像幼鼠那样恢复对以前事情的记忆。

• one, called tsa, inhibits the enzyme that removes acetyl groups.

  一个是tsa，它可以抑制去除乙酰基的酶。

• he indicated excess amounts of acetyl choline can be artificially produced, through both the administration of drugs or through the use of radio waves.

  他也指出过多数量乙酰胆堿能被人工制造，通过管理类药物或通过用无线电波。

• to activate helper genes, chemical tags called acetyl groups must first loosen tightly wrapped dna.

  为了激活这些辅助基因，那些被称为乙酰群的化学物质必须首先释放出那些紧紧被包裹住的脱氧核糖核酸。

• the cluster of learning and memory genes on the surrounding dna ends up close to the acetyl group.

  dna周围的学习和记忆基因束靠近乙酰基群，注入一种能促进乙酰基群变成任何一种组蛋白分子的酶。

• because the acetyl wasn’t present in young 3-month-old mice, the study concludes that it acts as a switch for a cluster of learning and memory genes.

  由于这种醋酸基在3个月大的白鼠脑中并不存在，研究显示这种醋酸基扮演了学习和记忆基因群组开关的角色。

• in age-related memory loss, the h4 histones don’t have enough acetyl groups attached to them.

  在因年龄而发生记忆遗失时，没有足够的乙酰基团粘在组蛋白上。

• the genetic switch involves acetylation, the introduction of an acetyl group into a molecule at the dna level of chromatin resulting in genetic transcription.

  基因「开关」涉及乙酰化作用，也就是将乙酰基群在染色质的dna水平上引入到分子中，由此完成基因转录。

• dr. fischer’s research shows that when young mice are learning, an acetyl group binds to a particular point on the histone protein.

  费舍尔博士的研究显示，当一只年轻的白鼠在学习时，一个乙酰基群在组蛋白上抱成特殊的节点。

• the other adds acetyl groups, which are slightly larger, to the proteins around which the dna is coiled. this has the opposite effect, making gene expression easier.

  另一种是在缠绕着dna的蛋白质上添加稍大一些的乙酰基，于是便产生了相反的效果———使基因表达更容易了。

• the professor indicated that an excess of acetyl choline in the brain can interfere with the memory process and control.

  教授指出大脑过多的乙酰胆堿能干扰记忆和控制的过程。