
T7 RNA polymerase - Wikipedia
In biotechnology applications, T7 RNA polymerase is commonly used to transcribe DNA that has been cloned into vectors that have two (different) phage promoters (e.g., T7 and T3, or T7 and SP6) in opposite orientation. RNA can be selectively synthesized from either strand of the insert DNA with the different polymerases.
T7 RNA聚合酶的前世今生 - 知乎 - 知乎专栏
噬菌体T7 RNA聚合酶 (T7 RNA Polymerase,T7 RNAP)于1970年首次从噬菌体T7感染的大肠杆菌细胞中分离出来,是催化RNA合成的最简单的酶之一。 T7噬菌体 是一种中等大小的噬菌体,其线状双螺旋DNA由39, 936 bp组成。39, 936 bp T7线性基因组的关键基因可以分为三大类,并且这三大类基因在T7感染周期的不同阶段进行表达:I类基因在感染早期表达,为噬菌体生长建立有利条件;II类是主要参与DNA复制、蛋白编码的基因;III类基因则在噬菌体生长的后期表达, …
T7 RNA聚合酶-T7启动子是什么? - 知乎专栏
2024年3月20日 · T7 RNA聚合酶, (T7 RNA Polymerase) 是一种高度特异识别 T7启动子 序列的DNA依赖的5'→3' RNA聚合酶。 T7 RNA Polymerase以含有T7启动子序列的单链或双链DNA为模板,NTP为底物,合成与启动子下游的单链DNA或 双链DNA模板链互补的RNA。 T7 RNA Polymerase可以识别修饰的NTP,例如生物素标记、地高辛标记、荧光素标记的NTP,可以用于各种标记RNA的合成。 同时对于T7启动子有高度的特异性。 T7 启动子(T7 promoter): …
T7 RNA 聚合酶 | NEB
噬菌体 T7 RNA 聚合酶是一种 DNA 依赖性 RNA 聚合酶,对 T7 噬菌体启动子具有高度特异性。 该酶的分子量为 99 kD,它以 T7 启动子后的 DNA 序列为模板,在 体外 催化 RNA 合成。 使用 T7 RNA 聚合酶合成的 RNA 适用于诸多科研和生物技术。 1X RNAPol 反应缓冲液,含有终浓度为 0.5 mM 的 ATP、UTP、GTP、CTP ,以及带有 T7 RNA 聚合酶启动子的 DNA 模板。 37℃ 温育。 来源于 大肠杆菌,携带含 T7 RNA 聚合酶基因的质粒。 1 单位指在 50 μl 总反应体系中,37℃ …
An engineered T7 RNA polymerase that produces mRNA free of ...
2022年11月10日 · To minimize the need for downstream purification processes, we rationally and computationally engineered a double mutant of T7 RNAP that produces substantially less immunostimulatory RNA during...
T7 RNA聚合酶 - 维基百科,自由的百科全书 - zh.wikipedia.org
T7 RNA聚合酶(英语:T7 RNA Polymerase)是一种RNA聚合酶,分子量约99kDa。专门催化5'→3'方向的RNA形成过程。T7RNA聚合酶具有高度启动子专一性,且只会转录T7噬菌体中位于T7启动子下游的的DNA或DNA复制品。 [1]
Engineered T7 RNA polymerase reduces dsRNA formation by …
T7 RNA polymerase (RNAP), the preferred tool for in vitro transcription (IVT), can generate double-stranded RNA (dsRNA) by-products that elicit immune stress and pose safety concerns. By combining the molecular beacon-based fluorescence-activated droplet sorting (FADS) utilized for random library sc …
T7 RNA Polymerase: Mechanism and Engineered Variants
2025年2月11日 · T7 RNA polymerase is a powerful tool in molecular biology, known for its ability to efficiently transcribe DNA into RNA. Its high specificity and robust activity make it indispensable in various applications, from basic research to biotechnological innovations.
The Structure of a Transcribing T7 RNA Polymerase in ... - Science
2008年10月24日 · We report crystal structures of T7 RNAP bound to promoter DNA containing either a 7- or an 8-nucleotide (nt) RNA transcript that illuminate intermediate states along the transition pathway. The amino-terminal domain comprises the C-helix subdomain and the promoter binding domain (PBD), which consists of two segments separated by subdomain H.
T7 RNA Polymerase - an overview | ScienceDirect Topics
T7 RNA Pol, which is considered to be the representative of phage RNA polymerases, is an invaluable tool used to direct a high level expression of cloned genes in vivo under the control of the T7 promoter and to prepare milligram quantities of almost any RNA transcripts in vitro.