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基本情報
登録情報 | データベース: PDB / ID: 8h5b | ||||||
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タイトル | The cryo-EM structure of nuclear transport receptor Kap114p complex with yeast TATA-box binding protein | ||||||
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![]() | PROTEIN TRANSPORT / nuclear transport receptor Kap114p / yeast TATA-box binding protein | ||||||
機能・相同性 | ![]() TFIIA-class transcription factor complex binding / RNA polymerase III transcription regulatory region sequence-specific DNA binding / RNA polymerase III preinitiation complex assembly / transcription factor TFIIIB complex / RNA polymerase I general transcription initiation factor binding / regulation of transcription by RNA polymerase III / RNA polymerase I preinitiation complex assembly / transcription factor TFIIA complex / NLS-bearing protein import into nucleus / DNA binding, bending ...TFIIA-class transcription factor complex binding / RNA polymerase III transcription regulatory region sequence-specific DNA binding / RNA polymerase III preinitiation complex assembly / transcription factor TFIIIB complex / RNA polymerase I general transcription initiation factor binding / regulation of transcription by RNA polymerase III / RNA polymerase I preinitiation complex assembly / transcription factor TFIIA complex / NLS-bearing protein import into nucleus / DNA binding, bending / nuclear import signal receptor activity / RNA Polymerase III Transcription Initiation From Type 2 Promoter / RNA polymerase II transcribes snRNA genes / RNA Polymerase II Promoter Escape / RNA Polymerase II Transcription Pre-Initiation And Promoter Opening / RNA Polymerase II Transcription Initiation / RNA Polymerase II Transcription Initiation And Promoter Clearance / RNA Polymerase II Pre-transcription Events / transcription factor TFIID complex / RNA polymerase II general transcription initiation factor activity / RNA Polymerase I Promoter Escape / nucleolar large rRNA transcription by RNA polymerase I / Estrogen-dependent gene expression / mRNA transport / nuclear pore / RNA polymerase II core promoter sequence-specific DNA binding / RNA polymerase II preinitiation complex assembly / DNA-templated transcription initiation / small GTPase binding / protein import into nucleus / disordered domain specific binding / nuclear envelope / DNA-binding transcription factor binding / transcription regulator complex / RNA polymerase II-specific DNA-binding transcription factor binding / negative regulation of DNA-templated transcription / chromatin binding / positive regulation of transcription by RNA polymerase II / protein-containing complex / nucleoplasm / nucleus / cytosol / cytoplasm 類似検索 - 分子機能 | ||||||
生物種 | ![]() ![]() | ||||||
手法 | 電子顕微鏡法 / 単粒子再構成法 / クライオ電子顕微鏡法 / 解像度: 4.03 Å | ||||||
![]() | Hsia, K.C. / Liao, C.C. / Wang, C.H. / Wu, Y.M. | ||||||
資金援助 | ![]()
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![]() | ![]() タイトル: Structural convergence endows nuclear transport receptor Kap114p with a transcriptional repressor function toward TATA-binding protein. 著者: Chung-Chi Liao / Yi-Sen Wang / Wen-Chieh Pi / Chun-Hsiung Wang / Yi-Min Wu / Wei-Yi Chen / Kuo-Chiang Hsia / ![]() 要旨: The transcription factor TATA-box binding protein (TBP) modulates gene expression in nuclei. This process requires the involvement of nuclear transport receptors, collectively termed karyopherin-β ...The transcription factor TATA-box binding protein (TBP) modulates gene expression in nuclei. This process requires the involvement of nuclear transport receptors, collectively termed karyopherin-β (Kap-β) in yeast, and various regulatory factors. In previous studies we showed that Kap114p, a Kap-β that mediates nuclear import of yeast TBP (yTBP), modulates yTBP-dependent transcription. However, how Kap114p associates with yTBP to exert its multifaceted functions has remained elusive. Here, we employ single-particle cryo-electron microscopy to determine the structure of Kap114p in complex with the core domain of yTBP (yTBP). Remarkably, Kap114p wraps around the yTBP N-terminal lobe, revealing a structure resembling transcriptional regulators in complex with TBP, suggesting convergent evolution of the two protein groups for a common function. We further demonstrate that Kap114p sequesters yTBP away from promoters, preventing a collapse of yTBP dynamics required for yeast responses to environmental stress. Hence, we demonstrate that nuclear transport receptors represent critical elements of the transcriptional regulatory network. | ||||||
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構造の表示
構造ビューア | 分子: ![]() ![]() |
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ダウンロードとリンク
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ダウンロード
PDBx/mmCIF形式 | ![]() | 199.1 KB | 表示 | ![]() |
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PDB形式 | ![]() | 156.5 KB | 表示 | ![]() |
PDBx/mmJSON形式 | ![]() | ツリー表示 | ![]() | |
その他 | ![]() |
-検証レポート
文書・要旨 | ![]() | 1.1 MB | 表示 | ![]() |
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文書・詳細版 | ![]() | 1.1 MB | 表示 | |
XML形式データ | ![]() | 46.7 KB | 表示 | |
CIF形式データ | ![]() | 68.5 KB | 表示 | |
アーカイブディレクトリ | ![]() ![]() | HTTPS FTP |
-関連構造データ
関連構造データ | ![]() 34490MC M: このデータのモデリングに利用したマップデータ C: 同じ文献を引用 ( |
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類似構造データ | 類似検索 - 機能・相同性 ![]() |
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リンク
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集合体
登録構造単位 | ![]()
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要素
#1: タンパク質 | 分子量: 114019.695 Da / 分子数: 1 / 由来タイプ: 組換発現 由来: (組換発現) ![]() ![]() 株: ATCC 204508 / S288c / 遺伝子: KAP114, YGL241W, HRC1004 / 発現宿主: ![]() ![]() |
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#2: タンパク質 | 分子量: 20120.754 Da / 分子数: 1 / 由来タイプ: 組換発現 由来: (組換発現) ![]() ![]() 株: ATCC 204508 / S288c / 遺伝子: SPT15, BTF1, TBP1, YER148W / 発現宿主: ![]() ![]() |
-実験情報
-実験
実験 | 手法: 電子顕微鏡法 |
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EM実験 | 試料の集合状態: PARTICLE / 3次元再構成法: 単粒子再構成法 |
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試料調製
構成要素 | 名称: nuclear transport receptor Kap114p complex with yeast TATA-box binding protein タイプ: COMPLEX / Entity ID: all / 由来: RECOMBINANT |
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由来(天然) | 生物種: ![]() ![]() |
由来(組換発現) | 生物種: ![]() ![]() |
緩衝液 | pH: 7.4 |
試料 | 包埋: NO / シャドウイング: NO / 染色: NO / 凍結: YES |
急速凍結 | 凍結剤: ETHANE |
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電子顕微鏡撮影
実験機器 | ![]() モデル: Titan Krios / 画像提供: FEI Company |
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顕微鏡 | モデル: FEI TITAN KRIOS |
電子銃 | 電子線源: ![]() |
電子レンズ | モード: BRIGHT FIELD / 最大 デフォーカス(公称値): 25000 nm / 最小 デフォーカス(公称値): 15000 nm |
撮影 | 電子線照射量: 40 e/Å2 フィルム・検出器のモデル: GATAN K3 BIOQUANTUM (6k x 4k) |
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解析
CTF補正 | タイプ: PHASE FLIPPING ONLY |
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3次元再構成 | 解像度: 4.03 Å / 解像度の算出法: FSC 0.143 CUT-OFF / 粒子像の数: 212899 / 対称性のタイプ: POINT |