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データを開く
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基本情報
| 登録情報 | データベース: EMDB / ID: EMD-5679 | |||||||||
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| タイトル | Electron Microscopy of the Aquaporin-0/Calmodulin Complex | |||||||||
マップデータ | 3D Reconstruction of the Aquaporin-0/Calmodulin Complex | |||||||||
試料 |
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キーワード | aquaporin / calmodulin / calcium regulation / water channel / membrane protein complex / electron microscopy | |||||||||
| 機能・相同性 | 機能・相同性情報maintenance of lens transparency / homotypic cell-cell adhesion / cell adhesion mediator activity / gap junction-mediated intercellular transport / water transport / water channel activity / : / : / : / : ...maintenance of lens transparency / homotypic cell-cell adhesion / cell adhesion mediator activity / gap junction-mediated intercellular transport / water transport / water channel activity / : / : / : / : / : / positive regulation of protein autophosphorylation / structural constituent of eye lens / negative regulation of peptidyl-threonine phosphorylation / : / type 3 metabotropic glutamate receptor binding / lens development in camera-type eye / positive regulation of peptidyl-threonine phosphorylation / anchoring junction / CaM pathway / Cam-PDE 1 activation / Sodium/Calcium exchangers / positive regulation of DNA binding / Calmodulin induced events / Reduction of cytosolic Ca++ levels / Activation of Ca-permeable Kainate Receptor / CREB1 phosphorylation through the activation of CaMKII/CaMKK/CaMKIV cascasde / Loss of phosphorylation of MECP2 at T308 / CREB1 phosphorylation through the activation of Adenylate Cyclase / negative regulation of high voltage-gated calcium channel activity / PKA activation / CaMK IV-mediated phosphorylation of CREB / response to corticosterone / Glycogen breakdown (glycogenolysis) / CLEC7A (Dectin-1) induces NFAT activation / Activation of RAC1 downstream of NMDARs / negative regulation of ryanodine-sensitive calcium-release channel activity / organelle localization by membrane tethering / mitochondrion-endoplasmic reticulum membrane tethering / autophagosome membrane docking / negative regulation of calcium ion export across plasma membrane / regulation of cardiac muscle cell action potential / nitric-oxide synthase binding / regulation of synaptic vesicle exocytosis / presynaptic endocytosis / Synthesis of IP3 and IP4 in the cytosol / regulation of cell communication by electrical coupling involved in cardiac conduction / Phase 0 - rapid depolarisation / calcineurin-mediated signaling / Negative regulation of NMDA receptor-mediated neuronal transmission / Unblocking of NMDA receptors, glutamate binding and activation / RHO GTPases activate PAKs / adenylate cyclase binding / regulation of ryanodine-sensitive calcium-release channel activity / Ion transport by P-type ATPases / Uptake and function of anthrax toxins / positive regulation of protein serine/threonine kinase activity / Long-term potentiation / protein phosphatase activator activity / Calcineurin activates NFAT / Regulation of MECP2 expression and activity / DARPP-32 events / Smooth Muscle Contraction / regulation of synaptic vesicle endocytosis / detection of calcium ion / regulation of cardiac muscle contraction / catalytic complex / RHO GTPases activate IQGAPs / regulation of cardiac muscle contraction by regulation of the release of sequestered calcium ion / enzyme regulator activity / activation of adenylate cyclase activity / phosphatidylinositol 3-kinase binding / positive regulation of nitric-oxide synthase activity / calcium channel inhibitor activity / Activation of AMPK downstream of NMDARs / presynaptic cytosol / cellular response to interferon-beta / Protein methylation / regulation of release of sequestered calcium ion into cytosol by sarcoplasmic reticulum / titin binding / Ion homeostasis / eNOS activation / Tetrahydrobiopterin (BH4) synthesis, recycling, salvage and regulation / regulation of calcium-mediated signaling / voltage-gated potassium channel complex / visual perception / FCERI mediated Ca+2 mobilization / calcium channel complex / substantia nigra development / regulation of heart rate / Ras activation upon Ca2+ influx through NMDA receptor / FCGR3A-mediated IL10 synthesis / Antigen activates B Cell Receptor (BCR) leading to generation of second messengers / calyx of Held / nitric-oxide synthase regulator activity / adenylate cyclase activator activity / response to amphetamine / sarcomere / VEGFR2 mediated cell proliferation / protein serine/threonine kinase activator activity 類似検索 - 分子機能 | |||||||||
| 生物種 | ![]() Homo sapiens (ヒト) | |||||||||
| 手法 | 単粒子再構成法 / ネガティブ染色法 / 解像度: 25.0 Å | |||||||||
データ登録者 | Reichow SL / Clemens DM / Freites JA / Nemeth-Cahalan KL / Heyden M / Tobias DJ / Hall JE / Gonen T | |||||||||
引用 | ジャーナル: Nat Struct Mol Biol / 年: 2013タイトル: Allosteric mechanism of water-channel gating by Ca2+-calmodulin. 著者: Steve L Reichow / Daniel M Clemens / J Alfredo Freites / Karin L Németh-Cahalan / Matthias Heyden / Douglas J Tobias / James E Hall / Tamir Gonen / ![]() 要旨: Calmodulin (CaM) is a universal regulatory protein that communicates the presence of calcium to its molecular targets and correspondingly modulates their function. This key signaling protein is ...Calmodulin (CaM) is a universal regulatory protein that communicates the presence of calcium to its molecular targets and correspondingly modulates their function. This key signaling protein is important for controlling the activity of hundreds of membrane channels and transporters. However, understanding of the structural mechanisms driving CaM regulation of full-length membrane proteins has remained elusive. In this study, we determined the pseudoatomic structure of full-length mammalian aquaporin-0 (AQP0, Bos taurus) in complex with CaM, using EM to elucidate how this signaling protein modulates water-channel function. Molecular dynamics and functional mutation studies reveal how CaM binding inhibits AQP0 water permeability by allosterically closing the cytoplasmic gate of AQP0. Our mechanistic model provides new insight, only possible in the context of the fully assembled channel, into how CaM regulates multimeric channels by facilitating cooperativity between adjacent subunits. | |||||||||
| 履歴 |
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構造の表示
| ムービー |
ムービービューア |
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| 構造ビューア | EMマップ: SurfView Molmil Jmol/JSmol |
| 添付画像 |
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ダウンロードとリンク
-EMDBアーカイブ
| マップデータ | emd_5679.map.gz | 458.7 KB | EMDBマップデータ形式 | |
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| ヘッダ (付随情報) | emd-5679-v30.xml emd-5679.xml | 13.2 KB 13.2 KB | 表示 表示 | EMDBヘッダ |
| 画像 | emd_5679.tif | 287.7 KB | ||
| アーカイブディレクトリ | http://ftp.pdbj.org/pub/emdb/structures/EMD-5679 ftp://ftp.pdbj.org/pub/emdb/structures/EMD-5679 | HTTPS FTP |
-関連構造データ
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リンク
| EMDBのページ | EMDB (EBI/PDBe) / EMDataResource |
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| 「今月の分子」の関連する項目 |
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マップ
| ファイル | ダウンロード / ファイル: emd_5679.map.gz / 形式: CCP4 / 大きさ: 1.1 MB / タイプ: IMAGE STORED AS FLOATING POINT NUMBER (4 BYTES) | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
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| 注釈 | 3D Reconstruction of the Aquaporin-0/Calmodulin Complex | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| 投影像・断面図 | 画像のコントロール
画像は Spider により作成 | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| ボクセルのサイズ | X=Y=Z: 3.98 Å | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| 密度 |
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| 対称性 | 空間群: 1 | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| 詳細 | EMDB XML:
CCP4マップ ヘッダ情報:
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-添付データ
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試料の構成要素
-全体 : Aquaporin-0 bound to Calmodulin
| 全体 | 名称: Aquaporin-0 bound to Calmodulin |
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| 要素 |
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-超分子 #1000: Aquaporin-0 bound to Calmodulin
| 超分子 | 名称: Aquaporin-0 bound to Calmodulin / タイプ: sample / ID: 1000 詳細: Sample was prepared for electron microscopy with negative stain 集合状態: One tetramer of Aquaporin-0 bound to 2 molecules of Calmodulin Number unique components: 2 |
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| 分子量 | 実験値: 130 KDa / 理論値: 130 KDa / 手法: Size-exclusion Chromatography and SDS-PAGE |
-分子 #1: Aquaporin-0
| 分子 | 名称: Aquaporin-0 / タイプ: protein_or_peptide / ID: 1 / Name.synonym: AQP0, MIP / 詳細: Crosslinked to Calmodulin using EDC/NHS / コピー数: 4 / 集合状態: tetramer / 組換発現: No / データベース: NCBI |
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| 由来(天然) | 生物種: ![]() |
| 分子量 | 実験値: 25 KDa / 理論値: 25 KDa |
| 配列 | UniProtKB: Pas12 / InterPro: Major intrinsic protein |
-分子 #2: Calmodulin
| 分子 | 名称: Calmodulin / タイプ: protein_or_peptide / ID: 2 / Name.synonym: CaM / 詳細: Calmodulin crosslinked to Aquaporin-0 / コピー数: 2 / 集合状態: monomer / 組換発現: Yes |
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| 由来(天然) | 生物種: Homo sapiens (ヒト) / 別称: Human / 細胞中の位置: cytoplasmic |
| 分子量 | 実験値: 17 KDa / 理論値: 17 KDa |
| 組換発現 | 生物種: ![]() |
| 配列 | UniProtKB: Calmodulin-3 |
-実験情報
-構造解析
| 手法 | ネガティブ染色法 |
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解析 | 単粒子再構成法 |
| 試料の集合状態 | particle |
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試料調製
| 濃度 | 0.02 mg/mL |
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| 緩衝液 | pH: 7.4 / 詳細: 25mM HEPES, 5mM CaCl2, 0.3% decylmaltoside |
| 染色 | タイプ: NEGATIVE / 詳細: 0.75% uranyl formate |
| グリッド | 詳細: 400 mesh carbon coated grid (Ted Pella) |
| 凍結 | 凍結剤: NONE / 装置: OTHER |
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電子顕微鏡法
| 顕微鏡 | FEI TECNAI 12 |
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| アライメント法 | Legacy - 非点収差: Objective lens astigmatism was corrected at 100,000 times magnification Legacy - Electron beam tilt params: 0 |
| 日付 | 2010年2月25日 |
| 撮影 | カテゴリ: FILM / フィルム・検出器のモデル: KODAK SO-163 FILM デジタル化 - スキャナー: NIKON SUPER COOLSCAN 9000 デジタル化 - サンプリング間隔: 6.35 µm / 実像数: 200 / 平均電子線量: 15 e/Å2 / ビット/ピクセル: 16 |
| Tilt angle min | 0 |
| 電子線 | 加速電圧: 120 kV / 電子線源: LAB6 |
| 電子光学系 | 倍率(補正後): 52000 / 照射モード: FLOOD BEAM / 撮影モード: BRIGHT FIELD / Cs: 2 mm / 最大 デフォーカス(公称値): 2.0 µm / 最小 デフォーカス(公称値): 1.0 µm / 倍率(公称値): 52000 |
| 試料ステージ | 試料ホルダーモデル: OTHER / Tilt angle max: 50 |
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画像解析
| 詳細 | Particles were selected from a tilted pair dataset at 0 and 50 degree tilt using SPIDER. An initial reconstruction was generated using random conical tilt methods in SPIDER and refined in FREALIGN |
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| CTF補正 | 詳細: CTF-TILT, each micrograph |
| 最終 再構成 | アルゴリズム: OTHER / 解像度のタイプ: BY AUTHOR / 解像度: 25.0 Å / 解像度の算出法: FSC 0.5 CUT-OFF / ソフトウェア - 名称: SPIDER, FREALIGN 詳細: Final Map with C2 Symmetry and Filtered to 25 Angstrom 使用した粒子像数: 11720 |
ムービー
コントローラー
万見について



キーワード
Homo sapiens (ヒト)
データ登録者
引用
UCSF Chimera






























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