...
首页> 外文期刊>Journal of Virology >Methylation of specific cytosine residues enhances simian virus 40 T-antigen binding to origin region DNA.
【24h】

Methylation of specific cytosine residues enhances simian virus 40 T-antigen binding to origin region DNA.

机译:特异性胞嘧啶残基的甲基化增强了与原始区DNA的Simian病毒40 T-抗原结合。

获取原文
           

摘要

Specific binding of simian virus 40 large T antigen to origin region DNA requires the interaction of T antigen with multiples of a consensus recognition pentanucleotide sequence (5'-G[T]-A[G]-G-G-C-3'). To assess the interaction of T antigen with cytosine residues in the recognition sequences, bacterial methylases were used to methylate simian virus 40 form I DNA in vitro at specific cytosine residues. Methylation of a subset of the cytosine residues in the pentanucleotide sequences resulted in enhanced binding of T antigen to origin region DNA. Enhanced binding to the methylated pentanucleotides indicates that the methyl groups introduced on this subset of pentanucleotide cytosine residues could not have sterically interfered with the interaction of T antigen with the recognition sequences. This lack of steric interference suggests that T antigen does not make close contact in the major groove with these particular cytosine residues during normal binding.
机译:Simian病毒40大的T抗原对原始区域DNA的特异性结合需要T抗原与倍数与共有识别戊核苷酸序列的相互作用(5'-G [T] -A [G] -G-G-C-3')。为了评估T抗原与胞嘧啶残基在识别序列中的相互作用,将细菌甲基酶用于在特异性胞嘧啶残基的体外形成I DNA。戊核苷酸序列中的胞嘧啶残基的子集的甲基化导致T抗原与起源区DNA的结合产生了增强。增强与甲基化偏核核苷酸的结合表明,在该戊核苷酸胞嘧啶残基上引入的甲基在该核核苷酸胞嘧啶残基中引入的甲基不能在与识别序列中的T抗原的相互作用中被干扰。这种缺乏空间干扰表明T抗原在正常结合期间没有在具有这些特定胞嘧啶残基的主要凹槽中保持紧密接触。

著录项

  • 来源
    《Journal of Virology》 |1987年第7期|共5页
  • 作者

    V G Wilson;

  • 作者单位
  • 收录信息 美国《科学引文索引》(SCI);
  • 原文格式 PDF
  • 正文语种
  • 中图分类
  • 关键词

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱:kefu@zhangqiaokeyan.com

京公网安备:11010802029741号 ICP备案号:京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有
  • 客服微信

  • 服务号