4ROD

Human TFIIB-related factor 2 (Brf2) and TBP bound to TRNAU1 promoter

4ROD の概要

• エントリーDOI: 10.2210/pdb4rod/pdb
• 関連するPDBエントリー: 4ROC 4ROE
• 分子名称: Transcription factor IIIB 50 kDa subunit, TATA-box-binding protein, Template strand, ... (5 entities in total)
• 機能のキーワード: transcription factor, transcription
• 由来する生物種: Homo sapiens (human); 詳細
• 細胞内の位置: Nucleus : Q9HAW0 P20226
• タンパク質・核酸の鎖数: 4
• 化学式量合計: 78011.95

構造登録者

Vannini, A.,Gouge, J.,Satia, K.,Guthertz, N. (登録日: 2014-10-28, 公開日: 2015-12-30, 最終更新日: 2024-02-28)

主引用文献

Gouge, J.,Satia, K.,Guthertz, N.,Widya, M.,Thompson, A.J.,Cousin, P.,Dergai, O.,Hernandez, N.,Vannini, A.
Redox Signaling by the RNA Polymerase III TFIIB-Related Factor Brf2.
Cell(Cambridge,Mass.), 163:1375-1387, 2015

PubMed Abstract: TFIIB-related factor 2 (Brf2) is a member of the family of TFIIB-like core transcription factors. Brf2 recruits RNA polymerase (Pol) III to type III gene-external promoters, including the U6 spliceosomal RNA and selenocysteine tRNA genes. Found only in vertebrates, Brf2 has been linked to tumorigenesis but the underlying mechanisms remain elusive. We have solved crystal structures of a human Brf2-TBP complex bound to natural promoters, obtaining a detailed view of the molecular interactions occurring at Brf2-dependent Pol III promoters and highlighting the general structural and functional conservation of human Pol II and Pol III pre-initiation complexes. Surprisingly, our structural and functional studies unravel a Brf2 redox-sensing module capable of specifically regulating Pol III transcriptional output in living cells. Furthermore, we establish Brf2 as a central redox-sensing transcription factor involved in the oxidative stress pathway and provide a mechanistic model for Brf2 genetic activation in lung and breast cancer.

PubMed: 26638071
DOI: 10.1016/j.cell.2015.11.005

実験手法

X-RAY DIFFRACTION (2.7 Å)