TRANSCRIPTION FACTOR LOADING ON THE MMTV PROMOTER - A BIMODAL MECHANISM FOR PROMOTER ACTIVATION

被引：362

作者：

ARCHER, TK ^{[1
]}

LEFEBVRE, P ^{[1
]}

WOLFORD, RG ^{[1
]}

HAGER, GL ^{[1
]}

机构：

[1] NCI,MOLEC VIROL LAB,HORMONE ACT & ONCOGENESIS SECT,BETHESDA,MD 20892

来源：

SCIENCE | 1992年 / 255卷 / 5051期

关键词：

D O I：

10.1126/science.1347958

中图分类号：

O [数理科学和化学]; P [天文学、地球科学]; Q [生物科学]; N [自然科学总论];

学科分类号：

07 ; 0710 ; 09 ;

摘要：

The mouse mammary tumor virus (MMTV) promoter attains a phased array of six nucleosomes when introduced into rodent cells. This architecture excludes nuclear factor 1/CCAAT transcription factor (NF1/CTF) from the promoter before glucocorticoid treatment and hormone-dependent access of nucleolytic agents to promoter DNA. In contrast, when the promoter was transiently introduced into cells, NF1/CTF was bound constitutively and nucleolytic attack was hormone-independent. Thus, induction at this promoter was a bimodal process involving receptor-dependent remodeling of chromatin that allows NF1/CTF loading and direct receptor-mediated recruitment of additional transcription factors.

引用

页码：1573 / 1576

页数：4

共 26 条

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