Mediator of RNA polymerase II transcription subunit 19 / Mediator of RNA polymerase II transcription subunit 7 / Mediator of RNA polymerase II transcription subunit 14 / Mediator of RNA polymerase II transcription subunit 24 / Mediator of RNA polymerase II transcription subunit 6 / Mediator of RNA polymerase II transcription subunit 21 / Mediator of RNA polymerase II transcription subunit 22 / Mediator of RNA polymerase II transcription subunit 1 / Mediator of RNA polymerase II transcription subunit 27 / Mediator of RNA polymerase II transcription subunit 8 ...Mediator of RNA polymerase II transcription subunit 19 / Mediator of RNA polymerase II transcription subunit 7 / Mediator of RNA polymerase II transcription subunit 14 / Mediator of RNA polymerase II transcription subunit 24 / Mediator of RNA polymerase II transcription subunit 6 / Mediator of RNA polymerase II transcription subunit 21 / Mediator of RNA polymerase II transcription subunit 22 / Mediator of RNA polymerase II transcription subunit 1 / Mediator of RNA polymerase II transcription subunit 27 / Mediator of RNA polymerase II transcription subunit 8 / Mediator of RNA polymerase II transcription subunit 30 / Mediator of RNA polymerase II transcription subunit 15 / Mediator of RNA polymerase II transcription subunit 10 / Mediator of RNA polymerase II transcription subunit 18 / Mediator of RNA polymerase II transcription subunit 28 / Mediator of RNA polymerase II transcription subunit 20 / Mediator of RNA polymerase II transcription subunit 4 / Mediator of RNA polymerase II transcription subunit 17 / Mediator of RNA polymerase II transcription subunit 9 / Mediator of RNA polymerase II transcription subunit 29 / Mediator of RNA polymerase II transcription subunit 11 / Mediator of RNA polymerase II transcription subunit 13 / Mediator of RNA polymerase II transcription subunit 23 / Mediator of RNA polymerase II transcription subunit 16 / Mediator of RNA polymerase II transcription subunit 31 類似検索 - 構成要素
National Institutes of Health/National Institute of General Medical Sciences (NIH/NIGMS)
米国
引用
ジャーナル: Mol Cell / 年: 2024 タイトル: Structural basis of the human transcriptional Mediator regulated by its dissociable kinase module. 著者: Ti-Chun Chao / Shin-Fu Chen / Hee Jong Kim / Hui-Chi Tang / Hsiang-Ching Tseng / An Xu / Leon Palao / Subash Khadka / Tao Li / Mo-Fan Huang / Dung-Fang Lee / Kenji Murakami / Thomas G Boyer / Kuang-Lei Tsai / 要旨: The eukaryotic transcriptional Mediator comprises a large core (cMED) and a dissociable CDK8 kinase module (CKM). cMED recruits RNA polymerase II (RNA Pol II) and promotes pre-initiation complex ...The eukaryotic transcriptional Mediator comprises a large core (cMED) and a dissociable CDK8 kinase module (CKM). cMED recruits RNA polymerase II (RNA Pol II) and promotes pre-initiation complex formation in a manner repressed by the CKM through mechanisms presently unknown. Herein, we report cryoelectron microscopy structures of the complete human Mediator and its CKM. The CKM binds to multiple regions on cMED through both MED12 and MED13, including a large intrinsically disordered region (IDR) in the latter. MED12 and MED13 together anchor the CKM to the cMED hook, positioning CDK8 downstream and proximal to the transcription start site. Notably, the MED13 IDR obstructs the recruitment of RNA Pol II/MED26 onto cMED by direct occlusion of their respective binding sites, leading to functional repression of cMED-dependent transcription. Combined with biochemical and functional analyses, these structures provide a conserved mechanistic framework to explain the basis for CKM-mediated repression of cMED function.
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集合体
登録構造単位
0: Mediator of RNA polymerase II transcription subunit 27 1: Mediator of RNA polymerase II transcription subunit 28 2: Mediator of RNA polymerase II transcription subunit 29 3: Mediator of RNA polymerase II transcription subunit 30 4: Mediator of RNA polymerase II transcription subunit 31 A: Mediator of RNA polymerase II transcription subunit 1 B: Unknown Chain D: Mediator of RNA polymerase II transcription subunit 4 F: Mediator of RNA polymerase II transcription subunit 6 G: Mediator of RNA polymerase II transcription subunit 7 H: Mediator of RNA polymerase II transcription subunit 8 I: Mediator of RNA polymerase II transcription subunit 9 J: Mediator of RNA polymerase II transcription subunit 10 K: Mediator of RNA polymerase II transcription subunit 11 N: Mediator of RNA polymerase II transcription subunit 14 O: Mediator of RNA polymerase II transcription subunit 15 P: Mediator of RNA polymerase II transcription subunit 16 Q: Mediator of RNA polymerase II transcription subunit 17 R: Mediator of RNA polymerase II transcription subunit 18 T: Mediator of RNA polymerase II transcription subunit 20 V: Mediator of RNA polymerase II transcription subunit 22 W: Mediator of RNA polymerase II transcription subunit 23 X: Mediator of RNA polymerase II transcription subunit 24 d: Mediator of RNA polymerase II transcription subunit 13 S: Mediator of RNA polymerase II transcription subunit 19 U: Mediator of RNA polymerase II transcription subunit 21 ヘテロ分子