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基本情報
登録情報 | データベース: PDB / ID: 4bom | ||||||
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タイトル | Structure of herpesvirus fusion glycoprotein B-bilayer complex revealing the protein-membrane and lateral protein-protein interaction | ||||||
![]() | ENVELOPE GLYCOPROTEIN B | ||||||
![]() | VIRAL PROTEIN / MEMBRANE PROXIMAL REGION / PROTEIN COAT / PSEUDO-ATOMIC VIRUS-HOST INTERACTION | ||||||
機能・相同性 | ![]() host cell Golgi membrane / host cell endosome membrane / symbiont entry into host cell / viral envelope / virion attachment to host cell / host cell plasma membrane / virion membrane / identical protein binding / membrane 類似検索 - 分子機能 | ||||||
生物種 | ![]() ![]() | ||||||
手法 | 電子顕微鏡法 / 電子線トモグラフィー法 / クライオ電子顕微鏡法 / 解像度: 27 Å | ||||||
![]() | Maurer, U.E. / Zeev-Ben-Mordehai, Z. / Pandurangan, A.P. / Cairns, T.M. / Hannah, B.P. / Whitbeck, J.C. / Eisenberg, R.J. / Cohen, G.H. / Topf, M. / Huiskonen, J.T. / Grunewald, K. | ||||||
![]() | ![]() タイトル: The structure of herpesvirus fusion glycoprotein B-bilayer complex reveals the protein-membrane and lateral protein-protein interaction. 著者: Ulrike E Maurer / Tzviya Zeev-Ben-Mordehai / Arun Prasad Pandurangan / Tina M Cairns / Brian P Hannah / J Charles Whitbeck / Roselyn J Eisenberg / Gary H Cohen / Maya Topf / Juha T Huiskonen / Kay Grünewald / ![]() 要旨: Glycoprotein B (gB) is a key component of the complex herpesvirus fusion machinery. We studied membrane interaction of two gB ectodomain forms and present an electron cryotomography structure of the ...Glycoprotein B (gB) is a key component of the complex herpesvirus fusion machinery. We studied membrane interaction of two gB ectodomain forms and present an electron cryotomography structure of the gB-bilayer complex. The two forms differed in presence or absence of the membrane proximal region (MPR) but showed an overall similar trimeric shape. The presence of the MPR impeded interaction with liposomes. In contrast, the MPR-lacking form interacted efficiently with liposomes. Lateral interaction resulted in coat formation on the membranes. The structure revealed that interaction of gB with membranes was mediated by the fusion loops and limited to the outer membrane leaflet. The observed intrinsic propensity of gB to cluster on membranes indicates an additional role of gB in driving the fusion process forward beyond the transient fusion pore opening and subsequently leading to fusion pore expansion. | ||||||
履歴 |
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Remark 700 | SHEET DETERMINATION METHOD: DSSP THE SHEETS PRESENTED AS "AC" IN EACH CHAIN ON SHEET RECORDS BELOW ... SHEET DETERMINATION METHOD: DSSP THE SHEETS PRESENTED AS "AC" IN EACH CHAIN ON SHEET RECORDS BELOW IS ACTUALLY AN 6-STRANDED BARREL THIS IS REPRESENTED BY A 7-STRANDED SHEET IN WHICH THE FIRST AND LAST STRANDS ARE IDENTICAL. THE SHEETS PRESENTED AS "BC" IN EACH CHAIN ON SHEET RECORDS BELOW IS ACTUALLY AN 6-STRANDED BARREL THIS IS REPRESENTED BY A 7-STRANDED SHEET IN WHICH THE FIRST AND LAST STRANDS ARE IDENTICAL. THE SHEETS PRESENTED AS "CB" IN EACH CHAIN ON SHEET RECORDS BELOW IS ACTUALLY AN 6-STRANDED BARREL THIS IS REPRESENTED BY A 7-STRANDED SHEET IN WHICH THE FIRST AND LAST STRANDS ARE IDENTICAL. |
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構造の表示
ムービー |
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構造ビューア | 分子: ![]() ![]() |
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-検証レポート
文書・要旨 | ![]() | 653 KB | 表示 | ![]() |
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文書・詳細版 | ![]() | 771.2 KB | 表示 | |
XML形式データ | ![]() | 65.5 KB | 表示 | |
CIF形式データ | ![]() | 97.2 KB | 表示 | |
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-関連構造データ
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リンク
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集合体
登録構造単位 | ![]()
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要素
#1: タンパク質 | 分子量: 71125.688 Da / 分子数: 3 / 断片: GLYCOPROTEIN B ECTODOMAIN, RESIDUES 103-724 / 由来タイプ: 組換発現 詳細: LIPOSOMES CONSISTING OF PHOSPHATIDYLCHOLINE AND CHOLESTEROL AT 1.7\:1 MOLAR RATIO WERE INCUBATED WITH GB AT PH 5.5 AT 37C FOR ONE HOUR 由来: (組換発現) ![]() ![]() 株: KOS / プラスミド: PCW289 / 細胞株 (発現宿主): Sf9 / 発現宿主: Spodoptera frugiperda / 参照: UniProt: P06437 |
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-実験情報
-実験
実験 | 手法: 電子顕微鏡法 |
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EM実験 | 試料の集合状態: PARTICLE / 3次元再構成法: 電子線トモグラフィー法 |
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試料調製
構成要素 | 名称: HUMAN HERPESVIRUS 1 ENVELOPED GLYCOPROTEIN GB ECTODOMAIN LACKING THE MEMBRANE PROXIMAL REGION BOUND TO LIPOSOMES タイプ: COMPLEX / 由来: RECOMBINANT |
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由来(天然) | 生物種: ![]() ![]() |
由来(組換発現) | 生物種: ![]() ![]() |
緩衝液 | 名称: PBS WITH SODIUM CITRATE / pH: 5.5 / 詳細: PBS WITH SODIUM CITRATE |
試料 | 濃度: 1 mg/ml / 包埋: NO / シャドウイング: NO / 染色: NO / 凍結: YES |
試料支持 | 詳細: HOLEY CARBON |
急速凍結 | 凍結剤: ETHANE-PROPANE / 詳細: LIQUID NITROGEN PROPANE MIXTURE |
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電子顕微鏡撮影
実験機器 | ![]() モデル: Tecnai F20 / 画像提供: FEI Company |
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顕微鏡 | モデル: FEI TECNAI F20 / 日付: 2008年1月17日 |
電子銃 | 電子線源: ![]() |
電子レンズ | モード: BRIGHT FIELD / 倍率(補正後): 67000 X / 最大 デフォーカス(公称値): 2000 nm / 最小 デフォーカス(公称値): 2000 nm / Cs: 2 mm |
試料ホルダ | 傾斜角・最大: 60 ° / 傾斜角・最小: -60 ° |
撮影 | 電子線照射量: 100 e/Å2 フィルム・検出器のモデル: GATAN ULTRASCAN 4000 (4k x 4k) |
画像スキャン | デジタル画像の数: 9 |
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解析
EMソフトウェア |
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CTF補正 | 詳細: LOW PASS FILTER TO THE FIRST ZERO CROSSING OF THE CTF | ||||||||||||
対称性 | 点対称性: C3 (3回回転対称) | ||||||||||||
3次元再構成 | 手法: SUBTOMOGRAM AVERAGING / 解像度: 27 Å / 粒子像の数: 786 / ピクセルサイズ(実測値): 4.6 Å 詳細: THE MISSING FUSION LOOP RESIDUES 261 AND 262 WERE MODELED IN ALL THE THREE CHAINS OF USING MODELLER BASED ON THE GB CRYSTAL STRUCTURE (PDB ID 2GUM) SUBMISSION BASED ON EXPERIMENTAL DATA FROM ...詳細: THE MISSING FUSION LOOP RESIDUES 261 AND 262 WERE MODELED IN ALL THE THREE CHAINS OF USING MODELLER BASED ON THE GB CRYSTAL STRUCTURE (PDB ID 2GUM) SUBMISSION BASED ON EXPERIMENTAL DATA FROM EMDB EMD-2380. (DEPOSITION ID: 11670). 対称性のタイプ: POINT | ||||||||||||
原子モデル構築 | プロトコル: FLEXIBLE FIT / 空間: REAL / 詳細: METHOD--FLEXIBLE REFINEMENT PROTOCOL--FLEXIBLE | ||||||||||||
原子モデル構築 | PDB-ID: 3NWF Accession code: 3NWF / Source name: PDB / タイプ: experimental model | ||||||||||||
精密化 | 最高解像度: 27 Å | ||||||||||||
精密化ステップ | サイクル: LAST / 最高解像度: 27 Å
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