生物信息的传递-Transcription——从DNA到RNA精选全文完整版
【13】The first step of transcription is called pre-initiation. RNA polymerase andcofactors(general transcription factors) bind to DNA and unwind it, creating aninitiation bubble. 转录的第一步称为预启动。RNA 聚合酶和辅助因子(一般转录因...
●基本概念●转录起始：RNA聚合酶、启动子●转录的基本过程●转录后加工●原核生物与真核生物mRNA的特征比较●RNA合成与DNA合成异同点 思考题？一、基本概念与基本特征 转录(transcription)：基因转录是在细胞核内进行的。它是指以DNA的一条链为模板，按照碱基互补配对原则，合成RNA的过程。转录 DNA RNA 参与转录的...
以DNA为模板,在RNA聚合酶作用下合成RNA的过程 promoter启动子(promoter): 与基因转录启动有关的特定保守序列;启动子本身不被转录 transcription factor反式作用因子 又称调节蛋白(DNA结合蛋白DBP,或转录因子TF) 基本转录因子:是RNA聚合酶结合启动子所必需的一组蛋白因子,决定三种RNA(mRNA、tRNA及rRNA)转录的类别。 特...
百度试题 结果1 题目以DNA为模板合成RNA的过程称为 A. DNA replication B. transcription C. reverse transcription D. translation E. RNA replication 相关知识点: 试题来源: 解析 B 反馈 收藏
DNA Transcription to mRNA - DNA is a double-stranded structure found in eukaryotes (multi-cell organisms) whereas RNA (Ribonucleic acid) are single-stranded structure found in prokaryotes (single-cell organisms like bacteria). During transcription, the D
RNA is present in lower and simple organisms, and DNA is in higher and complex organisms. Answer and Explanation: Transcription is associated with DNA to RNA. Transcription is the process of forming RNA from DNA with the help of the RNA polymerase enzyme. On the......
It is assumed that the viscosity exists at the segments where DNA molecule is surrounded by RNA polymerase. We demonstrate that the frictional forces destroy the modulation of the incoming solitonic wave. We show that viscosity, crucial for demodulation, is essential for DNA-RNA transcription.关键...
The RNA transcript is formed and then peels away, allowing the DNA that has already been transcribed to rewind into a double helix. Three distinct processes — initiation, elongation, and termination — constitute DNA transcription. RNA polymerase is much larger in reality than indicated here, ...
一级结构二级结构信使RNA(mRNA)转运RNA(tRNA)核蛋白体RNA(rRNA)种 类转录的概念在RNA聚合酶的催化下,以一段DNA链为模板合成RNA,从而将DNA所携带的遗传信息传递给RNA的过程称为转录(transcription)。经转录生成的RNA有多种,主要的是rRNA,tRNA,mRNA,snRNA 等。DNA 转录RNA基本特点不对称性 以双链DNA中的一条链...