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单词 Gene transcription
释义

Gene transcription

英语例句库

Histones are characterized by numerous posttranslational modifications that influence gene transcription.

组蛋白的特点是大量的翻译后修饰,这些修饰可以影响基因转录。

Signal transmission can be quenched by inhibition of N-acyl-homoserine-lactone, leading to breaking the initial of pathogenic genes transcription and the expression of virulence.

目前发现参与这种信息传递最普通的信号分子是N-脂酰高丝氨酸内酯。

原声例句
Osmosis-消化

CpG islands are found in most promoter regions of genes which are the DNA sequences responsible for the initiation of gene transcription.

CpG岛位于绝大部分启动子区域,是一组负责转录起始的DNA序列。

中文百科

转录 Transcription (genetics)

(重定向自Gene transcription)
mRNA的合成和处理的简化图。未显示酶。英文待翻译。
电子显微镜下看到的转录中的DNA与RNA,DNA周围的物质是正在合成的RNA。

转录英语:Transcription)是遗传信息由DNA转换到RNA的过程。作为蛋白质生物合成的第一步,转录是mRNA以及非编码RNA(tRNA、rRNA等)的合成步骤。

转录中,一个基因会被读取、复制为mRNA;就是说一特定的DNA片段作为模板,以DNA依赖的核糖核酸聚合酶(RNA聚合酶或RNA合成酶)作为催化剂而合成前体mRNA的过程。 转录尚有未清楚的部分,例如是否需要DNA解旋酶,一般来说是需要的,但某些地区称RNA聚合酶可代替其行使识别DNA上的有关碱基以开始转录的功能。 mRNA转录时,DNA分子双链打开,在RNA聚合酶的作用下,游离的4种核糖核苷酸按照碱基互补配对原则结合到DNA单链上,并在RNA聚合酶的作用下形成单链mRNA分子。至此,转录完成。 转录通常是多起点多向复制。 转录时所转录的仅为DNA上有遗传效应的片段(DNA),不包括内含子。

英语百科

Transcription (genetics) 转录

(重定向自Gene transcription)
Simplified diagram of mRNA synthesis and processing. Enzymes not shown.
Simple diagram of transcription initiation. RNAP = RNA polymerase

Electron micrograph of transcription of ribosomal RNA.  The forming ribosomal RNA strands are visible as branches from the main DNA strand.
Scheme of reverse transcription

Transcription is the first step of gene expression, in which a particular segment of DNA is copied into RNA (mRNA) by the enzyme RNA polymerase.

Both RNA and DNA are nucleic acids, which use base pairs of nucleotides as a complementary language. The two can be converted back and forth from DNA to RNA by the action of the correct enzymes. During transcription, a DNA sequence is read by an RNA polymerase, which produces a complementary, antiparallel RNA strand called a primary transcript.

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更新时间:2025/6/18 9:02:53