+データを開く
-基本情報
登録情報 | データベース: EMDB / ID: EMD-10309 | ||||||||||||
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タイトル | cryo-ET of cryo-FIB milled yeast cell, in which scs2/22 ist2 are deleted, with high intracellular calcium; shown in Figures 5C and S3F | ||||||||||||
マップデータ | cryo-ET of cryo-FIB milled yeast cell in which scs2/22 ist2 are deleted with high calcium levels; shown in Figures 5C and S3F | ||||||||||||
試料 |
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生物種 | Saccharomyces cerevisiae (パン酵母) | ||||||||||||
手法 | 電子線トモグラフィー法 / クライオ電子顕微鏡法 | ||||||||||||
データ登録者 | Hoffmann PC / Bharat TAM / Wozny MR / Boulanger J / Miller EA / Kukulski W | ||||||||||||
資金援助 | 英国, 3件
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引用 | ジャーナル: Dev Cell / 年: 2019 タイトル: Tricalbins Contribute to Cellular Lipid Flux and Form Curved ER-PM Contacts that Are Bridged by Rod-Shaped Structures. 著者: Patrick C Hoffmann / Tanmay A M Bharat / Michael R Wozny / Jerome Boulanger / Elizabeth A Miller / Wanda Kukulski / 要旨: Lipid flow between cellular organelles occurs via membrane contact sites. Extended-synaptotagmins, known as tricalbins in yeast, mediate lipid transfer between the endoplasmic reticulum (ER) and ...Lipid flow between cellular organelles occurs via membrane contact sites. Extended-synaptotagmins, known as tricalbins in yeast, mediate lipid transfer between the endoplasmic reticulum (ER) and plasma membrane (PM). How these proteins regulate membrane architecture to transport lipids across the aqueous space between bilayers remains unknown. Using correlative microscopy, electron cryo-tomography, and high-throughput genetics, we address the interplay of architecture and function in budding yeast. We find that ER-PM contacts differ in protein composition and membrane morphology, not in intermembrane distance. In situ electron cryo-tomography reveals the molecular organization of tricalbin-mediated contacts, suggesting a structural framework for putative lipid transfer. Genetic analysis uncovers functional overlap with cellular lipid routes, such as maintenance of PM asymmetry. Further redundancies are suggested for individual tricalbin protein domains. We propose a modularity of molecular and structural functions of tricalbins and of their roles within the cellular network of lipid distribution pathways. | ||||||||||||
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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添付画像 |
-ダウンロードとリンク
-EMDBアーカイブ
マップデータ | emd_10309.map.gz | 1.1 GB | EMDBマップデータ形式 | |
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ヘッダ (付随情報) | emd-10309-v30.xml emd-10309.xml | 13.2 KB 13.2 KB | 表示 表示 | EMDBヘッダ |
画像 | emd_10309.png | 140.3 KB | ||
アーカイブディレクトリ | http://ftp.pdbj.org/pub/emdb/structures/EMD-10309 ftp://ftp.pdbj.org/pub/emdb/structures/EMD-10309 | HTTPS FTP |
-検証レポート
文書・要旨 | emd_10309_validation.pdf.gz | 180 KB | 表示 | EMDB検証レポート |
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文書・詳細版 | emd_10309_full_validation.pdf.gz | 179.1 KB | 表示 | |
XML形式データ | emd_10309_validation.xml.gz | 4.5 KB | 表示 | |
アーカイブディレクトリ | https://ftp.pdbj.org/pub/emdb/validation_reports/EMD-10309 ftp://ftp.pdbj.org/pub/emdb/validation_reports/EMD-10309 | HTTPS FTP |
-関連構造データ
関連構造データ | C: 同じ文献を引用 (文献) |
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電子顕微鏡画像生データ | EMPIAR-10321 (タイトル: cryo-ET of cryo-FIB milled yeast cell in which scs2/22 ist2 are deleted with high intracellular calcium Data size: 14.3 Data #1: cryo-ET of cryo-FIB milled yeast cell with high intracellular calcium (scs2/22 ist2 deletion and GCaMP expression) [tilt series]) |
-リンク
EMDBのページ | EMDB (EBI/PDBe) / EMDataResource |
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-マップ
ファイル | ダウンロード / ファイル: emd_10309.map.gz / 形式: CCP4 / 大きさ: 1.4 GB / タイプ: IMAGE STORED AS SIGNED BYTE | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
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注釈 | cryo-ET of cryo-FIB milled yeast cell in which scs2/22 ist2 are deleted with high calcium levels; shown in Figures 5C and S3F | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
ボクセルのサイズ | X=Y=Z: 7.4 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
-試料の構成要素
-全体 : cryo-ET of cryo-FIB milled yeast cell, in which scs2/22 ist2 are ...
全体 | 名称: cryo-ET of cryo-FIB milled yeast cell, in which scs2/22 ist2 are deleted, with high intracellular calcium; shown in Figures 5C and S3F |
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要素 |
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-超分子 #1: cryo-ET of cryo-FIB milled yeast cell, in which scs2/22 ist2 are ...
超分子 | 名称: cryo-ET of cryo-FIB milled yeast cell, in which scs2/22 ist2 are deleted, with high intracellular calcium; shown in Figures 5C and S3F タイプ: cell / ID: 1 / 親要素: 0 |
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由来(天然) | 生物種: Saccharomyces cerevisiae (パン酵母) |
-実験情報
-構造解析
手法 | クライオ電子顕微鏡法 |
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解析 | 電子線トモグラフィー法 |
試料の集合状態 | cell |
-試料調製
緩衝液 | pH: 5.5 詳細: Synthetic Complete -Trp medium with 15% high molecular weight dextran (w/v), 2 % glucose and 200 mM calcium chloride |
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凍結 | 凍結剤: ETHANE / チャンバー内温度: 298 K / 装置: HOMEMADE PLUNGER 詳細: 5 microliter of cell suspension was applied to the grid and then backside-blotted for 12-15 s. |
詳細 | Cells were treated with 200 mM calcium chloride before plunge freezing. The cells with high GCaMP fluorescent signals, indicating high calcium levels, were targeted for cryo-FIB milling |
Cryo protectant | dextran |
切片作成 | 集束イオンビーム - 装置: OTHER / 集束イオンビーム - イオン: OTHER / 集束イオンビーム - 電圧: 16 kV / 集束イオンビーム - 電流: 0.023 nA / 集束イオンビーム - 時間: 3600 sec. / 集束イオンビーム - 温度: 103 K / 集束イオンビーム - Initial thickness: 5000 nm / 集束イオンビーム - 最終 厚さ: 200 nm 集束イオンビーム - 詳細: Initial rough milling was performed at 30 kV 0.5-1 nA, then with 0.3 nA until 3000 nm thickness, then decreased to 0.1 nA to 1000 nm thickness. Fine milling to 150- ...集束イオンビーム - 詳細: Initial rough milling was performed at 30 kV 0.5-1 nA, then with 0.3 nA until 3000 nm thickness, then decreased to 0.1 nA to 1000 nm thickness. Fine milling to 150-300 nm thickness was performed at 16kV 11 pA or 23 pA.. The value given for _emd_sectioning_focused_ion_beam.instrument is Scios DualBeam. This is not in a list of allowed values set(['DB235', 'OTHER']) so OTHER is written into the XML file. |
-電子顕微鏡法
顕微鏡 | FEI TITAN KRIOS |
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詳細 | Montaged images of the grid were acquired at 200 nm pixel size to localize the lamellae on the grid. Overview montages of the individual lamellae were acquired at about 5 nm pixel size to assess the lamellae quality and identify ER-PM contact sites within the cells |
撮影 | フィルム・検出器のモデル: GATAN K2 SUMMIT (4k x 4k) 検出モード: COUNTING / デジタル化 - 画像ごとのフレーム数: 1-4 / 平均電子線量: 1.0 e/Å2 詳細: Electron cryo-tomographic tilt-series were collected on a Titan Krios (FEI) operated at 300 kV using a Quantum energy filter (slit width 20 eV) and a K2 direct electron detector (Gatan) in ...詳細: Electron cryo-tomographic tilt-series were collected on a Titan Krios (FEI) operated at 300 kV using a Quantum energy filter (slit width 20 eV) and a K2 direct electron detector (Gatan) in counting mode at a pixel size of 3.7 angstroms and at a dose rate of ~ 2-4 e-/pixel/second on the detector. Tilt-series were acquired between +/- 60 degrees starting from 0 degrees with 1 degrees increment using SerialEM (Mastronarde, 2005) following a grouped dose-symmetric acquisition with a group size of 4 (Bharat et al., 2018; Hagen et al., 2017), and at -5 micron defocus. A dose of 1.0 e-/square angstroms was applied per image of the tilt-series. |
電子線 | 加速電圧: 300 kV / 電子線源: FIELD EMISSION GUN |
電子光学系 | 照射モード: FLOOD BEAM / 撮影モード: BRIGHT FIELD |
実験機器 | モデル: Titan Krios / 画像提供: FEI Company |
-画像解析
最終 再構成 | アルゴリズム: SIMULTANEOUS ITERATIVE (SIRT) / ソフトウェア - 名称: eTomo / 詳細: 10 SIRT iterations / 使用した粒子像数: 106 |
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CTF補正 | ソフトウェア - 名称: eTomo |