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基本情報
登録情報 | データベース: PDB / ID: 6odm | ||||||||||||||||||||||||||||||
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タイトル | Herpes simplex virus type 1 (HSV-1) portal vertex-adjacent capsid/CATC, asymmetric unit | ||||||||||||||||||||||||||||||
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![]() | VIRAL PROTEIN / tegument / portal / DNA-packaging / capsid | ||||||||||||||||||||||||||||||
機能・相同性 | ![]() deNEDDylase activity / viral genome packaging / T=16 icosahedral viral capsid / viral tegument / viral capsid assembly / viral DNA genome replication / chromosome organization / viral process / virion component / viral penetration into host nucleus ...deNEDDylase activity / viral genome packaging / T=16 icosahedral viral capsid / viral tegument / viral capsid assembly / viral DNA genome replication / chromosome organization / viral process / virion component / viral penetration into host nucleus / viral capsid / host cell / symbiont-mediated perturbation of host ubiquitin-like protein modification / cysteine-type deubiquitinase activity / host cell cytoplasm / symbiont entry into host cell / host cell nucleus / structural molecule activity / proteolysis / DNA binding 類似検索 - 分子機能 | ||||||||||||||||||||||||||||||
生物種 | ![]() ![]() | ||||||||||||||||||||||||||||||
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: 4.3 Å | ||||||||||||||||||||||||||||||
![]() | Liu, Y.T. / Jih, J. / Dai, X.H. / Bi, G.Q. / Zhou, Z.H. | ||||||||||||||||||||||||||||||
資金援助 | ![]() ![]()
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![]() | ![]() タイトル: Cryo-EM structures of herpes simplex virus type 1 portal vertex and packaged genome. 著者: Yun-Tao Liu / Jonathan Jih / Xinghong Dai / Guo-Qiang Bi / Z Hong Zhou / ![]() ![]() 要旨: Herpesviruses are enveloped viruses that are prevalent in the human population and are responsible for diverse pathologies, including cold sores, birth defects and cancers. They are characterized by ...Herpesviruses are enveloped viruses that are prevalent in the human population and are responsible for diverse pathologies, including cold sores, birth defects and cancers. They are characterized by a highly pressurized pseudo-icosahedral capsid-with triangulation number (T) equal to 16-encapsidating a tightly packed double-stranded DNA (dsDNA) genome. A key process in the herpesvirus life cycle involves the recruitment of an ATP-driven terminase to a unique portal vertex to recognize, package and cleave concatemeric dsDNA, ultimately giving rise to a pressurized, genome-containing virion. Although this process has been studied in dsDNA phages-with which herpesviruses bear some similarities-a lack of high-resolution in situ structures of genome-packaging machinery has prevented the elucidation of how these multi-step reactions, which require close coordination among multiple actors, occur in an integrated environment. To better define the structural basis of genome packaging and organization in herpes simplex virus type 1 (HSV-1), we developed sequential localized classification and symmetry relaxation methods to process cryo-electron microscopy (cryo-EM) images of HSV-1 virions, which enabled us to decouple and reconstruct hetero-symmetric and asymmetric elements within the pseudo-icosahedral capsid. Here we present in situ structures of the unique portal vertex, genomic termini and ordered dsDNA coils in the capsid spooled around a disordered dsDNA core. We identify tentacle-like helices and a globular complex capping the portal vertex that is not observed in phages, indicative of herpesvirus-specific adaptations in the DNA-packaging process. Finally, our atomic models of portal vertex elements reveal how the fivefold-related capsid accommodates symmetry mismatch imparted by the dodecameric portal-a longstanding mystery in icosahedral viruses-and inform possible DNA-sequence recognition and headful-sensing pathways involved in genome packaging. This work showcases how to resolve symmetry-mismatched elements in a large eukaryotic virus and provides insights into the mechanisms of herpesvirus genome packaging. | ||||||||||||||||||||||||||||||
履歴 |
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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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ダウンロードとリンク
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ダウンロード
PDBx/mmCIF形式 | ![]() | 1.6 MB | 表示 | ![]() |
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PDB形式 | ![]() | 1.2 MB | 表示 | ![]() |
PDBx/mmJSON形式 | ![]() | ツリー表示 | ![]() | |
その他 | ![]() |
-検証レポート
アーカイブディレクトリ | ![]() ![]() | HTTPS FTP |
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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
-タンパク質 , 3種, 10分子 TWSXLPEFOB
#1: タンパク質 | 分子量: 149303.125 Da / 分子数: 4 / 由来タイプ: 天然 / 詳細: P2 MCP subunit of periportal P hexon 由来: (天然) ![]() ![]() 株: KOS / 参照: UniProt: H9E925 #2: タンパク質 | 分子量: 12108.655 Da / 分子数: 4 / 由来タイプ: 天然 詳細: Chain E: P1 SCP subunit of periportal P hexon; decorates periportal P1 MCP (chain S) Chain F: P2 SCP subunit of periportal P hexon; decorates periportal P2 MCP (chain T) Chain L: P5 SCP ...詳細: Chain E: P1 SCP subunit of periportal P hexon; decorates periportal P1 MCP (chain S) Chain F: P2 SCP subunit of periportal P hexon; decorates periportal P2 MCP (chain T) Chain L: P5 SCP subunit of periportal P hexon; decorates periportal P5 MCP (chain W) Chain P: P6 SCP subunit of periportal P hexon; decorates periportal P6 MCP (chain X) 由来: (天然) ![]() ![]() 株: KOS / 参照: UniProt: Q25BW6 #7: タンパク質 | 分子量: 329179.500 Da / 分子数: 2 / 由来タイプ: 天然 詳細: Chain B: left pUL36 subunit of the periportal capsid-associated tegument complex (CATC); each CATC contains two pUL36 subunits Chain O: right pUL36 subunit of the periportal CATC 由来: (天然) ![]() ![]() 株: KOS 参照: UniProt: A0A0B5E3K2, UniProt: I1UYK0*PLUS, ubiquitinyl hydrolase 1, 加水分解酵素; プロテアーゼ; ペプチド結合加水分解酵素; システインプロテアーゼ |
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-Triplex capsid protein ... , 2種, 6分子 5D67HA
#3: タンパク質 | 分子量: 50370.363 Da / 分子数: 2 / 由来タイプ: 天然 / 詳細: Tri1 subunit of periportal triplex Ta 由来: (天然) ![]() ![]() 株: KOS / 参照: UniProt: Q1T724 #4: タンパク質 | 分子量: 34301.617 Da / 分子数: 4 / 由来タイプ: 天然 詳細: Chain 6: Tri2B subunit of periportal triplex Ta Chain H: Tri2B subunit of periportal triplex Tc 由来: (天然) ![]() ![]() 株: KOS / 参照: UniProt: G8H8D9 |
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-Capsid vertex component ... , 2種, 3分子 CGK
#5: タンパク質 | 分子量: 74769.391 Da / 分子数: 1 / 由来タイプ: 天然 詳細: pUL17 subunit of the periportal capsid-associated tegument complex (CATC); each CATC contains one pUL17 subunit 由来: (天然) ![]() ![]() 株: KOS / 参照: UniProt: F8REV0 |
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#6: タンパク質 | 分子量: 62752.777 Da / 分子数: 2 / 由来タイプ: 天然 詳細: upper pUL25 subunit of the periportal capsid-associated tegument complex (CATC); each CATC contains two pUL25 subunits 由来: (天然) ![]() ![]() 株: KOS / 参照: UniProt: D3YPI2 |
-詳細
Has protein modification | Y |
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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: 単粒子再構成法 |
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試料調製
構成要素 | 名称: Human herpesvirus 1 strain KOS / タイプ: VIRUS / 詳細: Cultured in Vero cells. / Entity ID: all / 由来: NATURAL |
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分子量 | 値: 200 MDa / 実験値: NO |
由来(天然) | 生物種: ![]() ![]() |
ウイルスについての詳細 | 中空か: NO / エンベロープを持つか: YES / 単離: STRAIN / タイプ: VIRION |
天然宿主 | 生物種: Homo sapiens |
ウイルス殻 | 名称: Capsid / 直径: 1300 nm / 三角数 (T数): 16 |
緩衝液 | pH: 7.4 |
試料 | 包埋: NO / シャドウイング: NO / 染色: NO / 凍結: YES |
試料支持 | グリッドの材料: COPPER / グリッドのタイプ: Quantifoil R2/1 |
急速凍結 | 装置: HOMEMADE PLUNGER / 凍結剤: ETHANE / 凍結前の試料温度: 298 K 詳細: The sample was manually blotted and frozen with a homemade plunger. |
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電子顕微鏡撮影
実験機器 | ![]() モデル: Titan Krios / 画像提供: FEI Company |
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顕微鏡 | モデル: FEI TITAN KRIOS |
電子銃 | 電子線源: ![]() |
電子レンズ | モード: BRIGHT FIELD / 倍率(公称値): 14000 X / 倍率(補正後): 24271 X / Calibrated defocus min: 1000 nm / 最大 デフォーカス(補正後): 3000 nm / Cs: 2.7 mm |
試料ホルダ | 凍結剤: NITROGEN 試料ホルダーモデル: FEI TITAN KRIOS AUTOGRID HOLDER 最高温度: 79 K |
撮影 | 平均露光時間: 13 sec. / 電子線照射量: 25 e/Å2 / 検出モード: SUPER-RESOLUTION フィルム・検出器のモデル: GATAN K2 SUMMIT (4k x 4k) 実像数: 8000 |
画像スキャン | サンプリングサイズ: 2.5 µm / 横: 1440 / 縦: 1440 / 動画フレーム数/画像: 26 |
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解析
ソフトウェア |
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EMソフトウェア |
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CTF補正 | タイプ: PHASE FLIPPING AND AMPLITUDE CORRECTION | ||||||||||||||||||||||||||||||||||||||||
粒子像の選択 | 選択した粒子像数: 45445 | ||||||||||||||||||||||||||||||||||||||||
対称性 | 点対称性: C5 (5回回転対称) | ||||||||||||||||||||||||||||||||||||||||
3次元再構成 | 解像度: 4.3 Å / 解像度の算出法: FSC 0.143 CUT-OFF / 粒子像の数: 42857 / アルゴリズム: FOURIER SPACE / 対称性のタイプ: POINT | ||||||||||||||||||||||||||||||||||||||||
原子モデル構築 | B value: 100 / プロトコル: FLEXIBLE FIT / 空間: REAL 詳細: Capsid and CATC atomic models from Dai & Zhou, Science 2018 (PDB-6CGR) were docked into the C5 portal vertex map (EMD-9860) and manually refined in Coot to improve fit. Regions demonstrating ...詳細: Capsid and CATC atomic models from Dai & Zhou, Science 2018 (PDB-6CGR) were docked into the C5 portal vertex map (EMD-9860) and manually refined in Coot to improve fit. Regions demonstrating major differences were reconstructed ab initio. Models were then iteratively refined between real space refinement in PHENIX and manual refinement in Coot. | ||||||||||||||||||||||||||||||||||||||||
精密化 | 立体化学のターゲット値: GeoStd + Monomer Library | ||||||||||||||||||||||||||||||||||||||||
拘束条件 |
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