+データを開く
-基本情報
登録情報 | データベース: EMDB / ID: EMD-10113 | |||||||||
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タイトル | Basketweave Z-band of sonic muscle in midshipman fish | |||||||||
マップデータ | Subtomogram average of a tomogram of basketweave Z-band found in sonic muscle in the swimbladder of male Type 1 midshipman fish. | |||||||||
試料 |
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生物種 | Porichthys notatus (魚類) | |||||||||
手法 | サブトモグラム平均法 / クライオ電子顕微鏡法 / ネガティブ染色法 / 解像度: 39.0 Å | |||||||||
データ登録者 | Luther PK / Heumann J / Burgoyne T / Morris EP | |||||||||
資金援助 | 英国, 1件
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引用 | ジャーナル: Proc Natl Acad Sci U S A / 年: 2019 タイトル: Three-dimensional structure of the basketweave Z-band in midshipman fish sonic muscle. 著者: Thomas Burgoyne / John M Heumann / Edward P Morris / Carlo Knupp / Jun Liu / Michael K Reedy / Kenneth A Taylor / Kuan Wang / Pradeep K Luther / 要旨: Striated muscle enables movement in all animals by the contraction of myriads of sarcomeres joined end to end by the Z-bands. The contraction is due to tension generated in each sarcomere between ...Striated muscle enables movement in all animals by the contraction of myriads of sarcomeres joined end to end by the Z-bands. The contraction is due to tension generated in each sarcomere between overlapping arrays of actin and myosin filaments. At the Z-band, actin filaments from adjoining sarcomeres overlap and are cross-linked in a regular pattern mainly by the protein α-actinin. The Z-band is dynamic, reflected by the 2 regular patterns seen in transverse section electron micrographs; the so-called small-square and basketweave forms. Although these forms are attributed, respectively, to relaxed and actively contracting muscles, the basketweave form occurs in certain relaxed muscles as in the muscle studied here. We used electron tomography and subtomogram averaging to derive the 3D structure of the Z-band in the swimbladder sonic muscle of type I male plainfin midshipman fish (, into which we docked the crystallographic structures of actin and α-actinin. The α-actinin links run diagonally between connected pairs of antiparallel actin filaments and are oriented at an angle of about 25° away from the actin filament axes. The slightly curved and flattened structure of the α-actinin rod has a distinct fit into the map. The Z-band model provides a detailed understanding of the role of α-actinin in transmitting tension between actin filaments in adjoining sarcomeres. | |||||||||
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: SurfViewMolmilJmol/JSmol |
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_10113.map.gz | 3.9 MB | EMDBマップデータ形式 | |
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ヘッダ (付随情報) | emd-10113-v30.xml emd-10113.xml | 14.4 KB 14.4 KB | 表示 表示 | EMDBヘッダ |
画像 | emd_10113.png | 59.3 KB | ||
アーカイブディレクトリ | http://ftp.pdbj.org/pub/emdb/structures/EMD-10113 ftp://ftp.pdbj.org/pub/emdb/structures/EMD-10113 | HTTPS FTP |
-検証レポート
文書・要旨 | emd_10113_validation.pdf.gz | 200.6 KB | 表示 | EMDB検証レポート |
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文書・詳細版 | emd_10113_full_validation.pdf.gz | 199.7 KB | 表示 | |
XML形式データ | emd_10113_validation.xml.gz | 4.6 KB | 表示 | |
アーカイブディレクトリ | https://ftp.pdbj.org/pub/emdb/validation_reports/EMD-10113 ftp://ftp.pdbj.org/pub/emdb/validation_reports/EMD-10113 | HTTPS FTP |
-関連構造データ
-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_10113.map.gz / 形式: CCP4 / 大きさ: 4.9 MB / タイプ: IMAGE STORED AS FLOATING POINT NUMBER (4 BYTES) | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
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注釈 | Subtomogram average of a tomogram of basketweave Z-band found in sonic muscle in the swimbladder of male Type 1 midshipman fish. | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
ボクセルのサイズ | X=Y=Z: 6.42 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 : Z-band of vertebrate striated muscle in basketweave form
全体 | 名称: Z-band of vertebrate striated muscle in basketweave form |
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要素 |
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-超分子 #1: Z-band of vertebrate striated muscle in basketweave form
超分子 | 名称: Z-band of vertebrate striated muscle in basketweave form タイプ: organelle_or_cellular_component / ID: 1 / 親要素: 0 詳細: Z-band studied in sonic muscle in the swimbladder of male Type 1 midshipman fish. |
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由来(天然) | 生物種: Porichthys notatus (魚類) / 器官: Swimbladder muscle / 組織: Muscle / Organelle: Z-band / 細胞中の位置: Myofibrillar |
-実験情報
-構造解析
手法 | ネガティブ染色法, クライオ電子顕微鏡法 |
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解析 | サブトモグラム平均法 |
試料の集合状態 | tissue |
-試料調製
緩衝液 | pH: 7 構成要素:
詳細: This is the relaxing solution | ||||||||||||||||||||||||
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染色 | タイプ: POSITIVE / 材質: Uranyl acetate and lead citrate 詳細: Conventionally stained with 2% uranyl acetate and Reynolds lead citrate | ||||||||||||||||||||||||
糖包埋 | 材質: Araldite 詳細: Sample was freeze-substituted in acetone and then embedded in araldiate | ||||||||||||||||||||||||
グリッド | 材質: COPPER / メッシュ: 700 | ||||||||||||||||||||||||
凍結 | 凍結剤: ETHANE / 装置: REICHERT-JUNG PLUNGER 詳細: Sample was cryo-protected with 30% sucrose (added to the relaxing solution). | ||||||||||||||||||||||||
詳細 | Fibers of swimbladder muscle (sonic muscle) of midshipman fish were rapidly frozen, freeze-substituted, embedded in resin, ~100 nm thin transverse sections cut, coated with 10 nm gold fiducials and stained with uranyl acetate and lead citrate. |
-電子顕微鏡法
顕微鏡 | FEI/PHILIPS CM200FEG |
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撮影 | フィルム・検出器のモデル: TVIPS TEMCAM-F415 (4k x 4k) デジタル化 - サイズ - 横: 4096 pixel / デジタル化 - サイズ - 縦: 4096 pixel / 撮影したグリッド数: 1 / 平均露光時間: 1.0 sec. / 平均電子線量: 5.0 e/Å2 |
電子線 | 加速電圧: 200 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 / 最小 デフォーカス(公称値): 0.005 µm / 倍率(公称値): 27000 |
試料ステージ | 試料ホルダーモデル: OTHER / ホルダー冷却材: NITROGEN |