negative regulation of DNA-templated transcription, elongation / DSIF complex / regulation of transcription elongation by RNA polymerase II / Abortive elongation of HIV-1 transcript in the absence of Tat / positive regulation of DNA-templated transcription, elongation / transcription elongation-coupled chromatin remodeling / RNA Pol II CTD phosphorylation and interaction with CE during HIV infection / RNA Pol II CTD phosphorylation and interaction with CE / Formation of the Early Elongation Complex / Formation of the HIV-1 Early Elongation Complex ...negative regulation of DNA-templated transcription, elongation / DSIF complex / regulation of transcription elongation by RNA polymerase II / Abortive elongation of HIV-1 transcript in the absence of Tat / positive regulation of DNA-templated transcription, elongation / transcription elongation-coupled chromatin remodeling / RNA Pol II CTD phosphorylation and interaction with CE during HIV infection / RNA Pol II CTD phosphorylation and interaction with CE / Formation of the Early Elongation Complex / Formation of the HIV-1 Early Elongation Complex / mRNA Capping / Pausing and recovery of Tat-mediated HIV elongation / Tat-mediated HIV elongation arrest and recovery / positive regulation of macroautophagy / RNA polymerase II transcribes snRNA genes / HIV elongation arrest and recovery / Pausing and recovery of HIV elongation / Tat-mediated elongation of the HIV-1 transcript / Formation of HIV-1 elongation complex containing HIV-1 Tat / Formation of HIV elongation complex in the absence of HIV Tat / RNA Polymerase II Transcription Elongation / Formation of RNA Pol II elongation complex / RNA Polymerase II Pre-transcription Events / transcription elongation by RNA polymerase II / TP53 Regulates Transcription of DNA Repair Genes / protein heterodimerization activity / mRNA binding / chromatin binding / negative regulation of transcription by RNA polymerase II / enzyme binding / positive regulation of transcription by RNA polymerase II / RNA binding / 核質 / 細胞核 類似検索 - 分子機能
ジャーナル: Nat Struct Mol Biol / 年: 2017 タイトル: Structure of a transcribing RNA polymerase II-DSIF complex reveals a multidentate DNA-RNA clamp. 著者: Carrie Bernecky / Jürgen M Plitzko / Patrick Cramer / 要旨: During transcription, RNA polymerase II (Pol II) associates with the conserved elongation factor DSIF. DSIF renders the elongation complex stable and functions during Pol II pausing and RNA ...During transcription, RNA polymerase II (Pol II) associates with the conserved elongation factor DSIF. DSIF renders the elongation complex stable and functions during Pol II pausing and RNA processing. We combined cryo-EM and X-ray crystallography to determine the structure of the mammalian Pol II-DSIF elongation complex at a nominal resolution of 3.4 Å. Human DSIF has a modular structure with two domains forming a DNA clamp, two domains forming an RNA clamp, and one domain buttressing the RNA clamp. The clamps maintain the transcription bubble, position upstream DNA, and retain the RNA transcript in the exit tunnel. The mobile C-terminal region of DSIF is located near exiting RNA, where it can recruit factors for RNA processing. The structure provides insight into the roles of DSIF during mRNA synthesis.