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基本情報
登録情報 | データベース: PDB / ID: 9d45 | ||||||||||||||||||
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タイトル | Cryo-EM structure of yeast Exportin Msn5 bound to cargo Pho4 and RanGTP | ||||||||||||||||||
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![]() | TRANSPORT PROTEIN / Karyopherin / Exportin / Nuclear Export | ||||||||||||||||||
機能・相同性 | ![]() positive regulation of phosphate metabolic process / regulation of cell cycle phase transition / exonucleolytic trimming to generate mature 3'-end of 5.8S rRNA from tricistronic rRNA transcript (SSU-rRNA, 5.8S rRNA, LSU-rRNA) / regulation of nucleocytoplasmic transport / Postmitotic nuclear pore complex (NPC) reformation / tRNA re-export from nucleus / RNA nuclear export complex / nuclear export signal receptor activity / cellular response to phosphate starvation / RNA export from nucleus ...positive regulation of phosphate metabolic process / regulation of cell cycle phase transition / exonucleolytic trimming to generate mature 3'-end of 5.8S rRNA from tricistronic rRNA transcript (SSU-rRNA, 5.8S rRNA, LSU-rRNA) / regulation of nucleocytoplasmic transport / Postmitotic nuclear pore complex (NPC) reformation / tRNA re-export from nucleus / RNA nuclear export complex / nuclear export signal receptor activity / cellular response to phosphate starvation / RNA export from nucleus / poly(A)+ mRNA export from nucleus / nucleus organization / ribosomal subunit export from nucleus / protein export from nucleus / protein import into nucleus / sequence-specific DNA binding / protein dimerization activity / chromatin remodeling / DNA-binding transcription factor activity / GTPase activity / GTP binding / negative regulation of transcription by RNA polymerase II / positive regulation of transcription by RNA polymerase II / RNA binding / 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: 3.1 Å | ||||||||||||||||||
![]() | Fung, H.Y.J. / Chook, Y.M. | ||||||||||||||||||
資金援助 | ![]()
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![]() | ![]() タイトル: Phosphate-dependent nuclear export via a non-classical NES class recognized by exportin Msn5. 著者: Ho Yee Joyce Fung / Sanraj R Mittal / Ashley B Niesman / Jenny Jiou / Binita Shakya / Takuya Yoshizawa / Ahmet E Cansizoglu / Michael P Rout / Yuh Min Chook / ![]() ![]() ![]() 要旨: Gene expression in response to environmental stimuli is dependent on nuclear localization of key signaling components, which can be tightly regulated by phosphorylation. This is exemplified by the ...Gene expression in response to environmental stimuli is dependent on nuclear localization of key signaling components, which can be tightly regulated by phosphorylation. This is exemplified by the phosphate-sensing transcription factor Pho4, which requires phosphorylation for nuclear export by the yeast exportin Msn5. Here, we present a high resolution cryogenic-electron microscopy structure showing the phosphorylated 35-residue nuclear export signal of Pho4, which binds the concave surface of Msn5 through two Pho4 phospho-serines that align with two Msn5 basic patches. These findings characterize a mechanism of phosphate-specific recognition mediated by a non-classical signal distinct from that for Exportin-1. Furthermore, the discovery that unliganded Msn5 is autoinhibited explains the positive cooperativity of Pho4/Ran-binding and proposes a mechanism for Pho4's release in the cytoplasm. These findings advance our understanding of the diversity of signals that drive nuclear export and how cargo phosphorylation is crucial in regulating nuclear transport and controlling cellular signaling pathways. | ||||||||||||||||||
履歴 |
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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 | ![]() | 292.9 KB | 表示 | ![]() |
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PDB形式 | ![]() | 226.8 KB | 表示 | ![]() |
PDBx/mmJSON形式 | ![]() | ツリー表示 | ![]() | |
その他 | ![]() |
-検証レポート
アーカイブディレクトリ | ![]() ![]() | HTTPS FTP |
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-関連構造データ
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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: 143067.188 Da / 分子数: 1 / 由来タイプ: 組換発現 由来: (組換発現) ![]() ![]() 遺伝子: MSN5, YDR335W, D9651.5 / 発現宿主: ![]() ![]() |
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#2: タンパク質 | 分子量: 21283.520 Da / 分子数: 1 / Mutation: Q71L / 由来タイプ: 組換発現 由来: (組換発現) ![]() ![]() 遺伝子: GSP1, CNR1, CST17, YLR293C, L8003.19 / 発現宿主: ![]() ![]() |
#3: タンパク質 | 分子量: 22497.379 Da / 分子数: 1 / 由来タイプ: 組換発現 / 詳細: In vitro phosphorylated 由来: (組換発現) ![]() ![]() 遺伝子: PHO4, YFR034C / 発現宿主: ![]() ![]() |
#4: 化合物 | ChemComp-GTP / |
#5: 化合物 | ChemComp-MG / |
研究の焦点であるリガンドがあるか | Y |
Has protein modification | Y |
-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: Msn5-Gsp1-pPho4(1-200) / タイプ: COMPLEX 詳細: Msn5 bound to RanGTP (Gsp1) and phosphorylated Pho4 fragment (1-200) Entity ID: #1-#3 / 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 |
試料支持 | グリッドの材料: COPPER / グリッドのサイズ: 300 divisions/in. / グリッドのタイプ: Quantifoil R1.2/1.3 |
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): 2500 nm / 最小 デフォーカス(公称値): 800 nm |
撮影 | 電子線照射量: 50 e/Å2 / フィルム・検出器のモデル: GATAN K3 (6k x 4k) |
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解析
EMソフトウェア |
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CTF補正 | タイプ: PHASE FLIPPING AND AMPLITUDE CORRECTION | ||||||||||||||||||||||||||||||||||||||||||||
3次元再構成 | 解像度: 3.1 Å / 解像度の算出法: FSC 0.143 CUT-OFF / 粒子像の数: 102030 / 対称性のタイプ: POINT | ||||||||||||||||||||||||||||||||||||||||||||
原子モデル構築 | 3D fitting-ID: 1
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拘束条件 |
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