+データを開く
-基本情報
登録情報 | データベース: PDB / ID: 8j0j | |||||||||||||||
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タイトル | AtSLAC1 8D mutant in closed state | |||||||||||||||
要素 | Guard cell S-type anion channel SLAC1,Green fluorescent protein | |||||||||||||||
キーワード | MEMBRANE PROTEIN / Stomatal closure / anion channel / phosphorylation-dependent activation | |||||||||||||||
機能・相同性 | 機能・相同性情報 response to humidity / stomatal closure / regulation of stomatal opening / inorganic anion transport / voltage-gated monoatomic anion channel activity / regulation of stomatal closure / stomatal movement / response to ozone / intracellular monoatomic ion homeostasis / organic anion transport ...response to humidity / stomatal closure / regulation of stomatal opening / inorganic anion transport / voltage-gated monoatomic anion channel activity / regulation of stomatal closure / stomatal movement / response to ozone / intracellular monoatomic ion homeostasis / organic anion transport / response to carbon dioxide / monoatomic anion transmembrane transporter activity / response to abscisic acid / multicellular organismal-level water homeostasis / monoatomic anion transport / abscisic acid-activated signaling pathway / response to light stimulus / bioluminescence / generation of precursor metabolites and energy / protein phosphatase binding / protein kinase binding / membrane / plasma membrane 類似検索 - 分子機能 | |||||||||||||||
生物種 | Arabidopsis thaliana (シロイヌナズナ) Aequorea victoria (オワンクラゲ) | |||||||||||||||
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: 2.7 Å | |||||||||||||||
データ登録者 | Lee, Y. / Lee, S. | |||||||||||||||
資金援助 | 韓国, 4件
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引用 | ジャーナル: Nat Commun / 年: 2023 タイトル: Cryo-EM structures of the plant anion channel SLAC1 from Arabidopsis thaliana suggest a combined activation model. 著者: Yeongmok Lee / Hyeon Seong Jeong / Seoyeon Jung / Junmo Hwang / Chi Truc Han Le / Sung-Hoon Jun / Eun Jo Du / KyeongJin Kang / Beom-Gi Kim / Hyun-Ho Lim / Sangho Lee / 要旨: The anion channel SLAC1 functions as a crucial effector in the ABA signaling, leading to stomata closure. SLAC1 is activated by phosphorylation in its intracellular domains. Both a binding-activation ...The anion channel SLAC1 functions as a crucial effector in the ABA signaling, leading to stomata closure. SLAC1 is activated by phosphorylation in its intracellular domains. Both a binding-activation model and an inhibition-release model for activation have been proposed based on only the closed structures of SLAC1, rendering the structure-based activation mechanism controversial. Here we report cryo-EM structures of Arabidopsis SLAC1 WT and its phosphomimetic mutants in open and closed states. Comparison of the open structure with the closed ones reveals the structural basis for opening of the conductance pore. Multiple phosphorylation of an intracellular domain (ICD) causes dissociation of ICD from the transmembrane domain. A conserved, positively-charged sequence motif in the intracellular loop 2 (ICL2) seems to be capable of sensing of the negatively charged phosphorylated ICD. Interactions between ICL2 and ICD drive drastic conformational changes, thereby widening the pore. From our results we propose that SLAC1 operates by a mechanism combining the binding-activation and inhibition-release models. | |||||||||||||||
履歴 |
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-構造の表示
構造ビューア | 分子: MolmilJmol/JSmol |
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-ダウンロードとリンク
-ダウンロード
PDBx/mmCIF形式 | 8j0j.cif.gz | 260.9 KB | 表示 | PDBx/mmCIF形式 |
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PDB形式 | pdb8j0j.ent.gz | 190.2 KB | 表示 | PDB形式 |
PDBx/mmJSON形式 | 8j0j.json.gz | ツリー表示 | PDBx/mmJSON形式 | |
その他 | その他のダウンロード |
-検証レポート
文書・要旨 | 8j0j_validation.pdf.gz | 1.3 MB | 表示 | wwPDB検証レポート |
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文書・詳細版 | 8j0j_full_validation.pdf.gz | 1.3 MB | 表示 | |
XML形式データ | 8j0j_validation.xml.gz | 50.5 KB | 表示 | |
CIF形式データ | 8j0j_validation.cif.gz | 70.1 KB | 表示 | |
アーカイブディレクトリ | https://data.pdbj.org/pub/pdb/validation_reports/j0/8j0j ftp://data.pdbj.org/pub/pdb/validation_reports/j0/8j0j | HTTPS FTP |
-関連構造データ
-リンク
-集合体
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非結晶学的対称性 (NCS) | NCSドメイン:
NCSドメイン領域: Ens-ID: ens_1
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