RNA polymerase subunit, found in RNA polymerase complexes I, II, and III / DNA-directed RNA polymerase subunit / DNA-directed RNA polymerase subunit beta / DNA-directed RNA polymerases I, II, and III subunit RPABC5 / Transcription elongation factor SPT4 / DNA-directed RNA polymerases I, II, and III subunit RPABC2 / DNA-directed RNA polymerases I, II, and III subunit RPABC3 / Transcription elongation factor / RNA polymerase II subunit B32 / Transcription elongation factor SPT5 ...RNA polymerase subunit, found in RNA polymerase complexes I, II, and III / DNA-directed RNA polymerase subunit / DNA-directed RNA polymerase subunit beta / DNA-directed RNA polymerases I, II, and III subunit RPABC5 / Transcription elongation factor SPT4 / DNA-directed RNA polymerases I, II, and III subunit RPABC2 / DNA-directed RNA polymerases I, II, and III subunit RPABC3 / Transcription elongation factor / RNA polymerase II subunit B32 / Transcription elongation factor SPT5 / DNA-directed RNA polymerases I, II, and III subunit RPABC1 / RNA polymerase II subunit B12.5 / DNA-directed RNA polymerase subunit / DNA-directed RNA polymerase II subunit RPB3 / DNA-directed RNA polymerase subunit 類似検索 - 構成要素
ジャーナル: Science / 年: 2017 タイトル: Structure of the complete elongation complex of RNA polymerase II with basal factors. 著者: Haruhiko Ehara / Takeshi Yokoyama / Hideki Shigematsu / Shigeyuki Yokoyama / Mikako Shirouzu / Shun-Ichi Sekine / 要旨: In the early stage of transcription, eukaryotic RNA polymerase II (Pol II) exchanges initiation factors with elongation factors to form an elongation complex for processive transcription. Here we ...In the early stage of transcription, eukaryotic RNA polymerase II (Pol II) exchanges initiation factors with elongation factors to form an elongation complex for processive transcription. Here we report the structure of the Pol II elongation complex bound with the basal elongation factors Spt4/5, Elf1, and TFIIS. Spt4/5 (the Spt4/Spt5 complex) and Elf1 modify a wide area of the Pol II surface. Elf1 bridges the Pol II central cleft, completing a "DNA entry tunnel" for downstream DNA. Spt4 and the Spt5 NGN and KOW1 domains encircle the upstream DNA, constituting a "DNA exit tunnel." The Spt5 KOW4 and KOW5 domains augment the "RNA exit tunnel," directing the exiting nascent RNA. Thus, the elongation complex establishes a completely different transcription and regulation platform from that of the initiation complexes.