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对水溶液中经γ射线辐照的DNA进行酶促消化,通过离子交换色谱法分离消化产物。

Enzymatic digestion of DNA gamma-irradiated in aqueous solution separation of the digests by ion-exchange chromatography.

作者信息

Dizdaroglu M, Hermes W, Schulte-Frohlinde D, von Sonntag C

出版信息

Int J Radiat Biol Relat Stud Phys Chem Med. 1978 Jun;33(6):563-9. doi: 10.1080/09553007814550471.

DOI:10.1080/09553007814550471
PMID:210133
Abstract

Aqueous solutions of DNA were gamma-irradiated in the presence and absence of oxygen and enzymatically hydrolysed by the combined action of pancreatic deoxyribonuclease (DNase I), snake-venom phosphodiesterase (PDE I), spleen phosphodiesterase (PDE II) and alkaline phosphatase. In contrast to unirradiated DNA, which is fully hydrolysed to nucleosides by these enzymes, gamma-irradiated DNA yields a series of oligonucleotides. Their isolation might enalbe the future identification of the chemical nature of DNA lesions.

摘要

DNA的水溶液在有氧和无氧条件下进行γ射线辐照,然后通过胰脱氧核糖核酸酶(DNase I)、蛇毒磷酸二酯酶(PDE I)、脾磷酸二酯酶(PDE II)和碱性磷酸酶的联合作用进行酶解。与未辐照的DNA不同,未辐照的DNA可被这些酶完全水解为核苷,而γ射线辐照的DNA会产生一系列寡核苷酸。它们的分离可能有助于未来鉴定DNA损伤的化学性质。

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引用本文的文献

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Biochem J. 1986 Aug 15;238(1):247-54. doi: 10.1042/bj2380247.
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The biological consequences of oxidized DNA bases.氧化DNA碱基的生物学后果。
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