- EMDB-47325: Cryo-EM structure of yeast Exportin Msn5 bound to RanGTP and Pho4... -
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基本情報
登録情報
データベース: EMDB / ID: EMD-47325
タイトル
Cryo-EM structure of yeast Exportin Msn5 bound to RanGTP and Pho4 (not modeled) (State 3-1)
マップデータ
structure of yeast Exportin Msn5 bound to RanGTP and Pho4 (not modeled) (State 3-1)
試料
複合体: Msn5-Gsp1-pPho4(1-200)
タンパク質・ペプチド: Protein MSN5
タンパク質・ペプチド: GTP-binding nuclear protein GSP1/CNR1
リガンド: GUANOSINE-5'-TRIPHOSPHATE
リガンド: MAGNESIUM ION
キーワード
Karyopherin / Exportin / Nuclear Export / TRANSPORT PROTEIN
機能・相同性
機能・相同性情報
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 / RNA export from nucleus / poly(A)+ mRNA export from nucleus / nucleus organization ...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 / 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 / GTPase activity / GTP binding / RNA binding / nucleus / cytosol / cytoplasm 類似検索 - 分子機能
Exportin-5, C-terminal domain / Exportin-5 family / Exportin-1/5 / small GTPase Ran family profile. / Ran GTPase / Ran (Ras-related nuclear proteins) /TC4 subfamily of small GTPases / Rho (Ras homology) subfamily of Ras-like small GTPases / Ras subfamily of RAS small GTPases / Small GTPase / Ras family ...Exportin-5, C-terminal domain / Exportin-5 family / Exportin-1/5 / small GTPase Ran family profile. / Ran GTPase / Ran (Ras-related nuclear proteins) /TC4 subfamily of small GTPases / Rho (Ras homology) subfamily of Ras-like small GTPases / Ras subfamily of RAS small GTPases / Small GTPase / Ras family / Rab subfamily of small GTPases / Armadillo-like helical / Small GTP-binding protein domain / Armadillo-type fold / P-loop containing nucleoside triphosphate hydrolase 類似検索 - ドメイン・相同性
GTP-binding nuclear protein GSP1/CNR1 / Protein MSN5 類似検索 - 構成要素
Cancer Prevention and Research Institute of Texas (CPRIT)
RP220582
米国
National Institutes of Health/National Institute of General Medical Sciences (NIH/NIGMS)
R35GM141461
米国
National Institutes of Health/National Institute of General Medical Sciences (NIH/NIGMS)
R01GM069909
米国
Welch Foundation
I-1532
米国
Other private
UTSW Gilman Special Opportunities Award
引用
ジャーナル: Nat Commun / 年: 2025 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.