Chemical Primer Extension: Individual Steps of Spontaneous Replication

Chemical Primer Extension: Individual Steps of Spontaneous Replication
复制标题

化学引物延伸:自发复制的各个步骤

DOI:
10.1002/cbdv.200790064
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发表时间:
2007
影响因子:
2.9
通讯作者:
C. Richert
C. Richert
中科院分区:
化学3区
文献类型:
--
作者:
J. Stütz;Eric Kervio;Christopher Deck;C. Richert

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正如我们从当今的生物学中所知,遗传信息的复制依赖于模板引导、聚合酶催化的引物延伸。众所周知,在没有酶的情况下,模板上可以形成短段的互补 RNA。本文总结了最近关于高效无酶引物延伸的工作,包括使用 3'-氨基末端脱氧核糖核苷酸引物和由未修饰的 RNA 制成的引物。通过使用核苷酸的氮杂氧基苯并三唑和下游结合寡聚物,已经证明了半衰期为数小时的近定量引物延伸。此外,位于模板或下游结合寡聚物末端的小非核苷取代基已被证明可以提高引物延伸反应的速率和保真度。由于所有四个模板碱基(A、C、G、T/U)都直接进行序列选择性引物延伸步骤,因此我们认为最终可以实现单体的完全非酶复制有新的希望。
The replication of genetic information, as we know it from today's biology, relies on template‐directed, polymerase‐catalyzed extension of primers. It is known that short stretches of complementary RNA can form on templates in the absence of enzymes. This account summarizes recent work on efficient enzyme‐free primer extension, both with 3′‐amino‐terminal deoxyribonucleotide primers and with primers made of unmodified RNA. Near‐quantitative primer extension with half‐life times on the order of hours has been demonstrated by using azaoxybenzotriazolides of nucleotides and downstream‐binding oligomers. Further, small non‐nucleosidic substituents placed on the terminus of the template or the downstream‐binding oligomer have been shown to increase the rate and fidelity of primer‐extension reactions. Since all four templating bases (A, C, G, T/U) direct sequence‐selective primer‐extension steps, we feel that there is renewed hope that full, nonenzymatic replication from monomers may eventually be achieved.
DOI: 10.1016/0076-6879(87)54081-2
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期刊: Angewandte Chemie (International ed. in English)
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