5AEM

Structure of t131 N-terminal TPR array

5AEM の概要

• エントリーDOI: 10.2210/pdb5aem/pdb
• 分子名称: TRANSCRIPTION FACTOR TAU 131 KDA SUBUNIT (1 entity in total)
• 機能のキーワード: transcription, rna polymerase iii
• 由来する生物種: SACCHAROMYCES CEREVISIAE S288C
• 細胞内の位置: Nucleus : P33339
• タンパク質・核酸の鎖数: 1
• 化学式量合計: 52366.89

構造登録者

Taylor, N.M.I.,Muller, C.W. (登録日: 2015-01-05, 公開日: 2015-06-24, 最終更新日: 2024-05-08)

主引用文献

Male, G.,von Appen, A.,Glatt, S.,Taylor, N.M.,Cristovao, M.,Groetsch, H.,Beck, M.,Muller, C.W.
Architecture of TFIIIC and its role in RNA polymerase III pre-initiation complex assembly.
Nat Commun, 6:7387-7387, 2015

PubMed Abstract: In eukaryotes, RNA Polymerase III (Pol III) is specifically responsible for transcribing genes encoding tRNAs and other short non-coding RNAs. The recruitment of Pol III to tRNA-encoding genes requires the transcription factors (TF) IIIB and IIIC. TFIIIC has been described as a conserved, multi-subunit protein complex composed of two subcomplexes, called τA and τB. How these two subcomplexes are linked and how their interaction affects the formation of the Pol III pre-initiation complex (PIC) is poorly understood. Here we use chemical crosslinking mass spectrometry and determine the molecular architecture of TFIIIC. We further report the crystal structure of the essential TPR array from τA subunit τ131 and characterize its interaction with a central region of τB subunit τ138. The identified τ131-τ138 interacting region is essential in vivo and overlaps with TFIIIB-binding sites, revealing a crucial interaction platform for the regulation of tRNA transcription initiation.

PubMed: 26060179
DOI: 10.1038/ncomms8387

実験手法

X-RAY DIFFRACTION (3.4 Å)