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Triphenylphosphine (TPP)

Company: Millipore Sigma
Catalog#: 8082700250
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Nonenzymatic RNA-templated Synthesis of N3′→P5′ Phosphoramidate DNA
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2020-09-05
[Abstract]  The RNA world hypothesis describes a scenario where early life forms relied on RNA to govern both inheritance and catalyze useful chemical reactions. Prior to the emergence of enzymes capable of replicating the RNA genome, a nonenzymatic replication process would have been necessary to initiate Darwinian Evolution. However, the one-pot nonenzymatic RNA chemical copying of templates with mixed-sequences is insufficient to generate strand products long enough to encode useful function. The use of alternate (RNA-like) genetic polymers may overcome hurdles associated with RNA copying, and further our understanding of nonenzymatic copying chemistry. This protocol describes the nonenzymatic copying of RNA templates into N3′→P5′ phosphoramidate DNA (3′-NP-DNA). We describe, in detail, the ... [摘要]  [摘要 ] RNA世界假说描述了一种场景,即早期生命形式依赖于RNA来控制遗传和催化有用的化学反应。在能够复制RNA基因组的酶出现之前,必须进行非酶复制过程以启动达尔文进化论。然而,具有混合序列的模板的一锅法非酶RNA化学复制不足以产生足够长的链产物以编码有用的功能。使用替代的(类似RNA的)遗传聚合物可以克服与RNA复制相关的障碍,并进一步我们对非酶复制化学的理解。该协议描述了将RNA模板非酶复制到N3'→P5' 氨基磷酸酯中的过程DNA(3'-NP-DNA)。我们详细描述了被2-氨基咪唑(3'-NH 2 -2AIpddN)活化的3'-氨基-2',3'-二脱氧核糖核苷酸单体的合成及其在模板指导的聚合反应中的用途。


[背景 ] 的Prim itive生命形式可能包括能够复制和功能的基因组中,一空间限定的隔室中包封的(绍斯塔克等人,2001;绍斯塔克,2012;布莱恩和Szostak,2014) 。在能够复制RNA基因组的酶出现之前,非酶复制过程可能是启动达尔文进化所必需的(Szostak,2012和2017)。由于RNA具有催化重要的化学反应(例如蛋白质合成)并在现代生物学环境中充当遗传信息载体的能力,因此它是原始遗传聚合物的逻辑候选物。

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