您当前所在位置: 首页 > 学者

黄鹰

  • 110浏览

  • 0点赞

  • 0收藏

  • 0分享

  • 66下载

  • 0评论

  • 引用

期刊论文

The ®ssion yeast TFIIB-related factor limits RNA polymerase III to a TATA-dependent pathway of TBP recruitment

黄鹰Ying Huang Edward McGillicuddy Michael Weindel Steven Dong and Richard J. Maraia*

Nucleic Acids Research, 2003, Vol. 31, No.8 2108-2116,-0001,():

URL:

摘要/描述

The RNA polymerase (pol) III-transcribed (e.g. tRNA and 5S rRNA) genes of traditionally studied organisms rely on gene-internal promoters that precisely position the initiation factor, TFIIIB, on the upstream promoter-less DNA. This is accomplished by the ability of the TFIIIB subunit, TFIIB-related factor (Brf1), to make stable protein±protein interactions with TATA-binding protein (TBP) and place it on the promoter-less upstream DNA. Unlike traditional model organisms, Schizosaccharomyces pombe tRNA and 5S rRNA genes contain upstream TATA promoters that are required to program functional pol III initiation complexes. In this study we demonstrate that S.pombe (Sp)Brf does not form stable interactions with TBP in the absence of DNA using approaches that do reveal stable association of TBP and S.cerevisiae (Sc)Brf1. Gel mobility analyses demonstrate that a TBP±TATA DNA complex can recruit SpBrf to a Pol III promoter. Consistent with this, overproduction of SpBrf in S.pombe increases the expression of a TATA- ependent, but not a TATA-less, suppressor tRNA gene. Since previous whole genome analysis also revealed TATA elements upstream of tRNA genes in Arabidopsis, this pathway may be more widespread than appreciated previously.

关键词:

【免责声明】以下全部内容由[黄鹰]上传于[2011年03月25日 14时44分32秒],版权归原创者所有。本文仅代表作者本人观点,与本网站无关。本网站对文中陈述、观点判断保持中立,不对所包含内容的准确性、可靠性或完整性提供任何明示或暗示的保证。请读者仅作参考,并请自行承担全部责任。

我要评论

全部评论 0

本学者其他成果

    同领域成果