+
データを開く
-
基本情報
登録情報 | データベース: PDB / ID: 7tau | ||||||
---|---|---|---|---|---|---|---|
タイトル | Refined capsid structure of human adenovirus D26 at 3.4 A resolution | ||||||
![]() |
| ||||||
![]() | VIRUS / Human Adenovirus D26 HAdV-D26 Ad26 Hexon Penton base IX | ||||||
機能・相同性 | ![]() hexon binding / viral capsid, decoration / T=25 icosahedral viral capsid / lysis of host organelle involved in viral entry into host cell / viral procapsid / microtubule-dependent intracellular transport of viral material towards nucleus / adhesion receptor-mediated virion attachment to host cell / viral release from host cell / endocytosis involved in viral entry into host cell / host cell ...hexon binding / viral capsid, decoration / T=25 icosahedral viral capsid / lysis of host organelle involved in viral entry into host cell / viral procapsid / microtubule-dependent intracellular transport of viral material towards nucleus / adhesion receptor-mediated virion attachment to host cell / viral release from host cell / endocytosis involved in viral entry into host cell / host cell / viral capsid / host cell cytoplasm / cell adhesion / symbiont entry into host cell / host cell nucleus / virion attachment to host cell / structural molecule activity 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: 3.38 Å | ||||||
![]() | Reddy, V.S. / Yu, X. / Barry, M.A. | ||||||
資金援助 | ![]()
| ||||||
![]() | ![]() タイトル: Refined Capsid Structure of Human Adenovirus D26 at 3.4 Å Resolution. 著者: Vijay S Reddy / Xiaodi Yu / Michael A Barry / ![]() 要旨: Various adenoviruses are being used as viral vectors for the generation of vaccines against chronic and emerging diseases (e.g., AIDS, COVID-19). Here, we report the improved capsid structure for one ...Various adenoviruses are being used as viral vectors for the generation of vaccines against chronic and emerging diseases (e.g., AIDS, COVID-19). Here, we report the improved capsid structure for one of these vectors, human adenovirus D26 (HAdV-D26), at 3.4 Å resolution, by reprocessing the previous cryo-electron microscopy dataset and obtaining a refined model. In addition to overall improvements in the model, the highlights of the structure include (1) locating a segment of the processed peptide of VIII that was previously believed to be released from the mature virions, (2) reorientation of the helical appendage domain (APD) of IIIa situated underneath the vertex region relative to its counterpart observed in the cleavage defective () mutant of HAdV-C5 that resulted in the loss of interactions between the APD and hexon bases, and (3) the revised conformation of the cleaved N-terminal segments of pre-protein VI (pVIn), located in the hexon cavities, is highly conserved, with notable stacking interactions between the conserved His13 and Phe18 residues. Taken together, the improved model of HAdV-D26 capsid provides a better understanding of protein-protein interactions in HAdV capsids and facilitates the efforts to modify and/or design adenoviral vectors with altered properties. Last but not least, we provide some insights into clotting factors (e.g., FX and PF4) binding to AdV vectors. #1: ![]() タイトル: Cryo-EM structure of human adenovirus D26 reveals the conservation of structural organization among human adenoviruses. 著者: Xiaodi Yu / David Veesler / Melody G Campbell / Mary E Barry / Francisco J Asturias / Michael A Barry / Vijay S Reddy / ![]() 要旨: Human adenoviruses (HAdVs) cause acute respiratory, ocular, and gastroenteric diseases and are also frequently used as gene and vaccine delivery vectors. Unlike the archetype human adenovirus C5 ...Human adenoviruses (HAdVs) cause acute respiratory, ocular, and gastroenteric diseases and are also frequently used as gene and vaccine delivery vectors. Unlike the archetype human adenovirus C5 (HAdV-C5), human adenovirus D26 (HAdV-D26) belongs to species-D HAdVs, which target different cellular receptors, and is differentially recognized by immune surveillance mechanisms. HAdV-D26 is being championed as a lower seroprevalent vaccine and oncolytic vector in preclinical and human clinical studies. To understand the molecular basis for their distinct biological properties and independently validate the structures of minor proteins, we determined the first structure of species-D HAdV at 3.7 Å resolution by cryo-electron microscopy. All the hexon hypervariable regions (HVRs), including HVR1, have been identified and exhibit a distinct organization compared to those of HAdV-C5. Despite the differences in the arrangement of helices in the coiled-coil structures, protein IX molecules form a continuous hexagonal network on the capsid exterior. In addition to the structurally conserved region (3 to 300) of IIIa, we identified an extra helical domain comprising residues 314 to 390 that further stabilizes the vertex region. Multiple (two to three) copies of the cleaved amino-terminal fragment of protein VI (pVIn) are observed in each hexon cavity, suggesting that there could be ≥480 copies of VI present in HAdV-D26. In addition, a localized asymmetric reconstruction of the vertex region provides new details of the three-pronged "claw hold" of the trimeric fiber and its interactions with the penton base. These observations resolve the previous conflicting assignments of the minor proteins and suggest the likely conservation of their organization across different HAdVs. | ||||||
履歴 |
|
-
構造の表示
ムービー |
![]() |
---|---|
構造ビューア | 分子: ![]() ![]() |
-
ダウンロードとリンク
-
ダウンロード
PDBx/mmCIF形式 | ![]() | 2.2 MB | 表示 | ![]() |
---|---|---|---|---|
PDB形式 | ![]() | 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 |
---|
-関連構造データ
-
リンク
-
集合体
登録構造単位 | ![]()
|
---|---|
1 | ![]()
| x 60
2 |
|
3 | ![]()
| x 5
4 | ![]()
| x 6
5 |
|
対称性 | 点対称性: (シェーンフリース記号: I (正20面体型対称)) |
-
要素
-タンパク質 , 7種, 30分子 ABCDEFGHIJKLNOMPQRSUV123456789
#1: タンパク質 | 分子量: 107218.703 Da / 分子数: 12 / 由来タイプ: 天然 由来: (天然) ![]() 参照: UniProt: Q3S8B3 #2: タンパク質 | | 分子量: 58647.703 Da / 分子数: 1 / 由来タイプ: 天然 由来: (天然) ![]() 参照: UniProt: A4ZKL2 #3: タンパク質 | | 分子量: 41039.184 Da / 分子数: 1 / 由来タイプ: 天然 由来: (天然) ![]() 参照: UniProt: A4ZKM1 #4: タンパク質 | | 分子量: 62201.371 Da / 分子数: 1 / 由来タイプ: 天然 由来: (天然) ![]() 参照: UniProt: A4ZKL1 #5: タンパク質 | 分子量: 13800.377 Da / 分子数: 4 / 由来タイプ: 天然 由来: (天然) ![]() 参照: UniProt: A4ZKK7 #6: タンパク質 | 分子量: 24633.643 Da / 分子数: 2 / 由来タイプ: 天然 由来: (天然) ![]() 参照: UniProt: A4ZKM0 #7: タンパク質 | 分子量: 25546.086 Da / 分子数: 9 / 由来タイプ: 天然 由来: (天然) ![]() 参照: UniProt: A4ZKL5 |
---|
-タンパク質・ペプチド , 1種, 1分子 X
#8: タンパク質・ペプチド | 分子量: 1294.587 Da / 分子数: 1 / 由来タイプ: 天然 由来: (天然) ![]() |
---|
-実験情報
-実験
実験 | 手法: 電子顕微鏡法 |
---|---|
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 |
-
試料調製
構成要素 | 名称: Human adenovirus 26 / タイプ: TISSUE / 詳細: Adenovirus / Entity ID: all / 由来: NATURAL |
---|---|
由来(天然) | 生物種: ![]() |
緩衝液 | pH: 8.1 / 詳細: 40 mM Tris pH 8.1 300 mM NaCl 10 mM CaCl2 |
緩衝液成分 | 濃度: 40 mM / 名称: Tris / 式: Tris |
試料 | 濃度: 5 mg/ml / 包埋: NO / シャドウイング: NO / 染色: NO / 凍結: YES / 詳細: Gradient purified virus |
試料支持 | グリッドの材料: COPPER / グリッドのタイプ: C-flat-1.2/1.3 |
急速凍結 | 装置: GATAN CRYOPLUNGE 3 / 凍結剤: ETHANE / 湿度: 90 % / 凍結前の試料温度: 298 K / 詳細: Blot for 3 seconds before plunging |
-
電子顕微鏡撮影
顕微鏡 | モデル: FEI TITAN |
---|---|
電子銃 | 電子線源: ![]() |
電子レンズ | モード: BRIGHT FIELD / 倍率(公称値): 22500 X / 最大 デフォーカス(公称値): 3000 nm / 最小 デフォーカス(公称値): 800 nm / Cs: 2.7 mm / C2レンズ絞り径: 100 µm / アライメント法: COMA FREE |
試料ホルダ | 凍結剤: NITROGEN 試料ホルダーモデル: FEI TITAN KRIOS AUTOGRID HOLDER |
撮影 | 電子線照射量: 53 e/Å2 / 検出モード: COUNTING フィルム・検出器のモデル: GATAN K2 SUMMIT (4k x 4k) 撮影したグリッド数: 2 / 実像数: 2000 |
画像スキャン | 動画フレーム数/画像: 38 |
-
解析
EMソフトウェア |
| ||||||||||||||||||||||||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
CTF補正 | タイプ: NONE | ||||||||||||||||||||||||||||||||
粒子像の選択 | 選択した粒子像数: 37026 | ||||||||||||||||||||||||||||||||
対称性 | 点対称性: I (正20面体型対称) | ||||||||||||||||||||||||||||||||
3次元再構成 | 解像度: 3.38 Å / 解像度の算出法: FSC 0.143 CUT-OFF / 粒子像の数: 30834 / アルゴリズム: FOURIER SPACE / クラス平均像の数: 1 / 対称性のタイプ: POINT | ||||||||||||||||||||||||||||||||
原子モデル構築 | B value: 150 / プロトコル: RIGID BODY FIT / 空間: REAL / Target criteria: Correlation coefficient | ||||||||||||||||||||||||||||||||
原子モデル構築 | PDB-ID: 5TX1 Accession code: 5TX1 / Source name: PDB / タイプ: experimental model |