+データを開く
-基本情報
登録情報 | データベース: PDB / ID: 8g1r | |||||||||||||||||||||
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タイトル | A Vibrio cholerae viral satellite enables efficient horizontal transfer by using an external scaffold to assemble hijacked coat proteins into small capsids | |||||||||||||||||||||
要素 |
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キーワード | VIRUS LIKE PARTICLE / PLE / Procapsid | |||||||||||||||||||||
機能・相同性 | Major capsid protein GpE / Phage major capsid protein E / Putative major head protein / Phage protein 機能・相同性情報 | |||||||||||||||||||||
生物種 | Vibrio phage ICP1_2011_A (ファージ) Vibrio cholerae (コレラ菌) | |||||||||||||||||||||
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: 3.4 Å | |||||||||||||||||||||
データ登録者 | Subramanian, S. / Boyd, C.M. / Seed, K.D. / Parent, K.N. | |||||||||||||||||||||
資金援助 | 米国, 6件
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引用 | ジャーナル: bioRxiv / 年: 2023 タイトル: A viral satellite maximizes its spread and inhibits phage by remodeling hijacked phage coat proteins into small capsids. 著者: Caroline M Boyd / Sundharraman Subramanian / Drew T Dunham / Kristin N Parent / Kimberley D Seed / 要旨: Phage satellites commonly remodel capsids they hijack from the phages they parasitize, but only a few mechanisms regulating the change in capsid size have been reported. Here, we investigated how a ...Phage satellites commonly remodel capsids they hijack from the phages they parasitize, but only a few mechanisms regulating the change in capsid size have been reported. Here, we investigated how a satellite from , PLE, remodels the capsid it has been predicted to steal from the phage ICP1 (1). We identified that a PLE-encoded protein, TcaP, is both necessary and sufficient to form small capsids during ICP1 infection. Interestingly, we found that PLE is dependent on small capsids for efficient transduction of its genome, making it the first satellite to have this requirement. ICP1 isolates that escaped TcaP-mediated remodeling acquired substitutions in the coat protein, suggesting an interaction between these two proteins. With a procapsid-like-particle (PLP) assembly platform in , we demonstrated that TcaP is a scaffold that regulates the assembly of small capsids. Further, we studied the structure of PLE PLPs using cryogenic electron microscopy and found that TcaP is an external scaffold, that is functionally and somewhat structurally similar to the external scaffold, Sid, encoded by the unrelated satellite P4 (2). Finally, we showed that TcaP is largely conserved across PLEs. Together, these data support a model in which TcaP directs the assembly of small capsids comprised of ICP1 coat proteins, which inhibits the complete packaging of the ICP1 genome and permits more efficient packaging of replicated PLE genomes. #1: ジャーナル: Elife / 年: 2024 タイトル: A viral satellite maximizes its spread and inhibits phage by remodeling hijacked phage coat proteins into small capsids. 著者: Caroline M Boyd / Sundharraman Subramanian / Drew T Dunham / Kristin N Parent / Kimberley D Seed / 要旨: Phage satellites commonly remodel capsids they hijack from the phages they parasitize, but only a few mechanisms regulating the change in capsid size have been reported. Here, we investigated how a ...Phage satellites commonly remodel capsids they hijack from the phages they parasitize, but only a few mechanisms regulating the change in capsid size have been reported. Here, we investigated how a satellite from , phage-inducible chromosomal island-like element (PLE), remodels the capsid it has been predicted to steal from the phage ICP1 (Netter et al., 2021). We identified that a PLE-encoded protein, TcaP, is both necessary and sufficient to form small capsids during ICP1 infection. Interestingly, we found that PLE is dependent on small capsids for efficient transduction of its genome, making it the first satellite to have this requirement. ICP1 isolates that escaped TcaP-mediated remodeling acquired substitutions in the coat protein, suggesting an interaction between these two proteins. With a procapsid-like particle (PLP) assembly platform in , we demonstrated that TcaP is a bona fide scaffold that regulates the assembly of small capsids. Further, we studied the structure of PLE PLPs using cryogenic electron microscopy and found that TcaP is an external scaffold that is functionally and somewhat structurally similar to the external scaffold, Sid, encoded by the unrelated satellite P4 (Kizziah et al., 2020). Finally, we showed that TcaP is largely conserved across PLEs. Together, these data support a model in which TcaP directs the assembly of small capsids comprised of ICP1 coat proteins, which inhibits the complete packaging of the ICP1 genome and permits more efficient packaging of replicated PLE genomes. | |||||||||||||||||||||
履歴 |
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-構造の表示
構造ビューア | 分子: MolmilJmol/JSmol |
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-ダウンロードとリンク
-ダウンロード
PDBx/mmCIF形式 | 8g1r.cif.gz | 243 KB | 表示 | PDBx/mmCIF形式 |
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PDB形式 | pdb8g1r.ent.gz | 187.6 KB | 表示 | PDB形式 |
PDBx/mmJSON形式 | 8g1r.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 | 8g1r_validation.pdf.gz | 1.3 MB | 表示 | wwPDB検証レポート |
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文書・詳細版 | 8g1r_full_validation.pdf.gz | 1.3 MB | 表示 | |
XML形式データ | 8g1r_validation.xml.gz | 62.7 KB | 表示 | |
CIF形式データ | 8g1r_validation.cif.gz | 92.5 KB | 表示 | |
アーカイブディレクトリ | https://data.pdbj.org/pub/pdb/validation_reports/g1/8g1r ftp://data.pdbj.org/pub/pdb/validation_reports/g1/8g1r | HTTPS FTP |
-関連構造データ
関連構造データ | 29675MC M: このデータのモデリングに利用したマップデータ C: 同じ文献を引用 (文献) |
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類似構造データ | 類似検索 - 機能・相同性F&H 検索 |
-リンク
-集合体
登録構造単位 |
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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
#1: タンパク質 | 分子量: 38428.023 Da / 分子数: 4 / 由来タイプ: 組換発現 由来: (組換発現) Vibrio phage ICP1_2011_A (ファージ) 遺伝子: ICP12011A_121 / プラスミド: pETDUET / 発現宿主: Escherichia coli BL21 (大腸菌) / 参照: UniProt: A0A385IH56 #2: タンパク質 | | 分子量: 33231.152 Da / 分子数: 1 / 由来タイプ: 組換発現 / 由来: (組換発現) Vibrio cholerae (コレラ菌) / 株: El Tor / Variant: PLE1 / プラスミド: pETDUET / 発現宿主: Escherichia coli BL21 (大腸菌) / 参照: UniProt: M1R2Y9 Has protein modification | N | |
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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: PLE Procapsid / タイプ: COMPLEX / Entity ID: all / 由来: MULTIPLE SOURCES | |||||||||||||||||||||||||
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分子量 | 実験値: NO | |||||||||||||||||||||||||
由来(天然) | 生物種: Vibrio cholerae (コレラ菌) / 株: El Tor | |||||||||||||||||||||||||
由来(組換発現) | 生物種: Escherichia coli BL21 (大腸菌) / プラスミド: pETDUET | |||||||||||||||||||||||||
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: OTHER / タイプ: VIRION | |||||||||||||||||||||||||
天然宿主 | 生物種: Shigella flexneri Y | |||||||||||||||||||||||||
緩衝液 | pH: 7.5 詳細: 50 mM Tris-HCl, pH 7.4, 100 mM NaCl, 10 mM MgSO4, 1 mM CaCl2 | |||||||||||||||||||||||||
緩衝液成分 |
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試料 | 包埋: NO / シャドウイング: NO / 染色: NO / 凍結: YES | |||||||||||||||||||||||||
急速凍結 | 装置: FEI VITROBOT MARK IV / 凍結剤: ETHANE / 湿度: 100 % / 凍結前の試料温度: 277.15 K |
-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 / 最大 デフォーカス(公称値): 2000 nm / 最小 デフォーカス(公称値): 700 nm |
撮影 | 電子線照射量: 36.41 e/Å2 フィルム・検出器のモデル: GATAN K3 BIOQUANTUM (6k x 4k) |
-解析
CTF補正 | タイプ: NONE | ||||||||||||||||||||||||
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対称性 | 点対称性: I (正20面体型対称) | ||||||||||||||||||||||||
3次元再構成 | 解像度: 3.4 Å / 解像度の算出法: FSC 0.143 CUT-OFF / 粒子像の数: 379643 / 対称性のタイプ: POINT | ||||||||||||||||||||||||
拘束条件 |
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