+データを開く
-基本情報
登録情報 | データベース: PDB / ID: 6v1t | ||||||
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タイトル | Empty AAVrh.39 particle | ||||||
要素 | Capsid protein VP1 | ||||||
キーワード | VIRUS / AAVrh.39 / capsid / empty | ||||||
機能・相同性 | Phospholipase A2-like domain / Phospholipase A2-like domain / Parvovirus coat protein VP2 / Parvovirus coat protein VP1/VP2 / Parvovirus coat protein VP2 / Capsid/spike protein, ssDNA virus / T=1 icosahedral viral capsid / structural molecule activity / Capsid protein VP1 機能・相同性情報 | ||||||
生物種 | Adeno-associated virus (アデノ随伴ウイルス) | ||||||
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: 3.39 Å | ||||||
データ登録者 | Mietzsch, M. / Agbandje-McKenna, M. | ||||||
引用 | ジャーナル: J Virol / 年: 2020 タイトル: Comparative Analysis of the Capsid Structures of AAVrh.10, AAVrh.39, and AAV8. 著者: Mario Mietzsch / Candace Barnes / Joshua A Hull / Paul Chipman / Jun Xie / Nilakshee Bhattacharya / Duncan Sousa / Robert McKenna / Guangping Gao / Mavis Agbandje-McKenna / 要旨: Adeno-associated viruses (AAVs) from clade E are often used as vectors in gene delivery applications. This clade includes rhesus isolate 10 (AAVrh.10) and 39 (AAVrh.39) which, unlike representative ...Adeno-associated viruses (AAVs) from clade E are often used as vectors in gene delivery applications. This clade includes rhesus isolate 10 (AAVrh.10) and 39 (AAVrh.39) which, unlike representative AAV8, are capable of crossing the blood-brain barrier (BBB), thereby enabling the delivery of therapeutic genes to the central nervous system. Here, the capsid structures of AAV8, AAVrh.10 and AAVrh.39 have been determined by cryo-electron microscopy and three-dimensional image reconstruction to 3.08-, 2.75-, and 3.39-Å resolution, respectively, to enable a direct structural comparison. AAVrh.10 and AAVrh.39 are 98% identical in amino acid sequence but only ∼93.5% identical to AAV8. However, the capsid structures of all three viruses are similar, with only minor differences observed in the previously described surface variable regions, suggesting that specific residues S269 and N472, absent in AAV8, may confer the ability to cross the BBB in AAVrh.10 and AAVrh.39. Head-to-head comparison of empty and genome-containing particles showed DNA ordered in the previously described nucleotide-binding pocket, supporting the suggested role of this pocket in DNA packaging for the The structural characterization of these viruses provides a platform for future vector engineering efforts toward improved gene delivery success with respect to specific tissue targeting, transduction efficiency, antigenicity, or receptor retargeting. Recombinant adeno-associated virus vectors (rAAVs), based on AAV8 and AAVrh.10, have been utilized in multiple clinical trials to treat different monogenetic diseases. The closely related AAVrh.39 has also shown promise As recently attained for other AAV biologics, e.g., Luxturna and Zolgensma, based on AAV2 and AAV9, respectively, the vectors in this study will likely gain U.S. Food and Drug Administration approval for commercialization in the near future. This study characterized the capsid structures of these clinical vectors at atomic resolution using cryo-electron microscopy and image reconstruction for comparative analysis. The analysis suggested two key residues, S269 and N472, as determinants of BBB crossing for AAVrh.10 and AAVrh.39, a feature utilized for central nervous system delivery of therapeutic genes. The structure information thus provides a platform for engineering to improve receptor retargeting or tissue specificity. These are important challenges in the field that need attention. Capsid structure information also provides knowledge potentially applicable for regulatory product approval. | ||||||
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 | 分子: MolmilJmol/JSmol |
-ダウンロードとリンク
-ダウンロード
PDBx/mmCIF形式 | 6v1t.cif.gz | 5.1 MB | 表示 | PDBx/mmCIF形式 |
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PDB形式 | pdb6v1t.ent.gz | 表示 | PDB形式 | |
PDBx/mmJSON形式 | 6v1t.json.gz | ツリー表示 | PDBx/mmJSON形式 | |
その他 | その他のダウンロード |
-検証レポート
文書・要旨 | 6v1t_validation.pdf.gz | 914.6 KB | 表示 | wwPDB検証レポート |
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文書・詳細版 | 6v1t_full_validation.pdf.gz | 958.5 KB | 表示 | |
XML形式データ | 6v1t_validation.xml.gz | 645.3 KB | 表示 | |
CIF形式データ | 6v1t_validation.cif.gz | 1 MB | 表示 | |
アーカイブディレクトリ | https://data.pdbj.org/pub/pdb/validation_reports/v1/6v1t ftp://data.pdbj.org/pub/pdb/validation_reports/v1/6v1t | HTTPS FTP |
-関連構造データ
-リンク
-集合体
登録構造単位 |
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-要素
#1: タンパク質 | 分子量: 58573.527 Da / 分子数: 60 / 由来タイプ: 組換発現 由来: (組換発現) Adeno-associated virus (アデノ随伴ウイルス) 細胞株 (発現宿主): HEK293 / 発現宿主: Homo sapiens (ヒト) / 参照: UniProt: B4Y886 |
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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 |
-試料調製
構成要素 | 名称: Adeno-associated virus / タイプ: VIRUS / Entity ID: all / 由来: RECOMBINANT |
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分子量 | 実験値: NO |
由来(天然) | 生物種: Adeno-associated virus (アデノ随伴ウイルス) 株: AAV8 |
由来(組換発現) | 生物種: Homo sapiens (ヒト) / 細胞: HEK293 |
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: NO / 単離: SEROTYPE / タイプ: VIRION |
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 |
急速凍結 | 凍結剤: ETHANE |
-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: FIELD EMISSION GUN / 加速電圧: 300 kV / 照射モード: FLOOD BEAM |
電子レンズ | モード: BRIGHT FIELD |
撮影 | 電子線照射量: 67 e/Å2 フィルム・検出器のモデル: DIRECT ELECTRON DE-20 (5k x 3k) |
-解析
ソフトウェア | 名称: PHENIX / バージョン: 1.10-2155_2155: / 分類: 精密化 | ||||||||||||||||||||||||
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CTF補正 | タイプ: PHASE FLIPPING AND AMPLITUDE CORRECTION | ||||||||||||||||||||||||
対称性 | 点対称性: I (正20面体型対称) | ||||||||||||||||||||||||
3次元再構成 | 解像度: 3.39 Å / 解像度の算出法: FSC 0.143 CUT-OFF / 粒子像の数: 52912 / 対称性のタイプ: POINT | ||||||||||||||||||||||||
拘束条件 |
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