Sequence specificity in aflatoxin B1--DNA interactions.

Sequence specificity in aflatoxin B1--DNA interactions.
复制标题

黄曲霉毒素 B1-DNA 相互作用的序列特异性。

DOI:
10.1073/pnas.80.1.6
复制
发表时间:
1983
影响因子:
11.1
通讯作者:
Humayun,MZ
Humayun,MZ
中科院分区:
综合性期刊1区
文献类型:
--
作者:
Muench,KF;Misra,RP;Humayun,MZ

文献摘要

参考文献

被引文献

相似文献

黄曲霉毒素B1(AFB1)的活化形式主要引起鸟嘌呤残基的共价修饰,导致DNA中不稳定的碱位。序列分析的Maxam-Gilbert程序的简单扩展允许鉴定AFB1诱导的碱不稳定位点,并确定已知序列的DNA片段上特定位点的碱不稳定AFB1修饰的频率。利用这一策略,我们研究了一些已知序列的DNA片段中侧翼核苷酸序列对AFB1修饰的影响。我们的结果表明,双链DNA中的某些鸟嘌呤残基被AFB1优先攻击,根据邻近核苷酸序列的知识可以预测到的方式。体外观察到的序列特异性与许多测试参数无关,很可能在体内发生。
The activated form of aflatoxin B1 (AFB1) causes covalent modification primarily of guanine residues, leading to alkali-labile sites in DNA. A simple extension of the Maxam-Gilbert procedure for sequence analysis permits the identification of alkali-labile sites induced by AFB1 and determination of the frequency of alkali-labile AFB1 modifications at particular sites on a DNA fragment of known sequence. Using this strategy, we have investigated the influence of flanking nucleotide sequences on AFB1 modification in a number of DNA fragments of known sequence. Our results show that certain guanine residues in double-stranded DNA are preferentially attacked by AFB1 over others in a manner predictable from a knowledge of vicinal nucleotide sequences. The observed in vitro sequence specificity is independent of a number of tested parameters and is likely to occur in vivo.
18 种 I 型 DNA 拓扑异构酶
DOI: 10.1016/s1874-6047(08)60344-3
发表时间: 1981
期刊: The Enzymes
影响因子: --
作者:
James C. Wang
通讯作者: James C. Wang
核小体核心颗粒的 X 射线结构。
DOI: 10.1080/07391102.1985.10507623
发表时间: 1985
影响因子: 4.4
作者:
Uberbacher,EC;Bunick,GJ
通讯作者: Bunick,GJ
DOI: 10.7146/math.scand.a-11574
发表时间: 1975-01-01
影响因子: 0.5
作者:
BANCHOFF, TF;WHITE, JH
通讯作者: WHITE, JH
通过条带计数法测定天然 Virion SV40 DNA 和 Minicol DNA 中的超螺旋圈数
DOI: --
发表时间: 1976
期刊: Cell
影响因子: 64.5
作者:
M. Shure;J. Vinograd
通讯作者: J. Vinograd
DOI: 10.1016/0022-2836(84)90404-2
发表时间: 1984-01-01
影响因子: 5.6
作者:
HOROWITZ, DS;WANG, JC
通讯作者: WANG, JC