引发酶
引发酶（英语：primase）是指在DNA复制的起始阶段合成单链RNA引物的RNA聚合酶，引物合成后，DNA聚合酶会沿着引物继续合成单链DNA（延伸），此后RNA引物片段会被外切酶5'到3'方向切除。
引发酶催化一个称为引物的短RNA（或某些生物的DNA）片段的合成，并与单链DNA模板互补。引发酶是DNA复制起始阶段的关键酶之一，因为没有任何已知DNA聚合酶能在没有起始引物的情况下合成DNA。
primase
/'primeis/
英汉-汉英词典
引发酶
词组 | 习惯用语
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- primary adj. 主要的；初级的；基本的 n. 原色；最主要者
- primal adj. 最初的；原始的；主要的 n. [心理]被压抑童年情绪的释放
- primate n. 大主教；灵长类的动物；[罕]首领 adj. 首要的；灵长目动物的
- primrose n. 樱草花；报春花；淡黄色；最盛期 adj. 如樱草般淡黄色泽的；欢乐的
- primacy n. 首位；卓越；大主教的职位
primase n. [生化] 引发酶
网络短语:
primase & primosome 引物酶及引发体
rna primase RNA引物酶
primase e 引发酶
DNA primase DNA 引发酶
primase and primosome 引发体
dna primase polymerase alpha complex dna引物酶
英语例句库
- Both research groups conclude that helicase-primase inhibitors are more potent than acyclovir and its derivatives.
无论研究小组断定旋-引抑制剂更烈性比阿昔洛韦及其衍生物.
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英语百科
Primase 引发酶
![Figure 1. Select multifunctional primases across three domains of life (eukaryota, archaea, and bacteria). The ability of a primase to perform a particular activity is indicated by a check mark. Adapted from [6].](/uploads/202502/04/Multifunctional_primases_figure5552.jpg)
DNA primase, also called as DNA primerase, is an enzyme involved in the replication of DNA and is a type of RNA polymerase. Primase catalyzes the synthesis of a short RNA (or DNA in some organisms ) segment called a primer complementary to a ssDNA template. Primase is of key importance in DNA replication because no known DNA polymerases can initiate the synthesis of a DNA strand without an initial RNA or DNA primer (for temporary DNA elongation). After this elongation the RNA piece is removed by a 5' to 3' exonuclease and refilled with DNA.
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