+データを開く
-基本情報
登録情報 | データベース: PDB / ID: 3j6m | ||||||
---|---|---|---|---|---|---|---|
タイトル | Kinetic and Structural Analysis of Coxsackievirus B3 Receptor Interactions and Formation of the A-particle | ||||||
要素 | Coxsackievirus and adenovirus receptor | ||||||
キーワード | CELL ADHESION / Coxsackievirus B3 / CVB3 / CAR | ||||||
機能・相同性 | 機能・相同性情報 AV node cell-bundle of His cell adhesion involved in cell communication / cell adhesive protein binding involved in AV node cell-bundle of His cell communication / homotypic cell-cell adhesion / AV node cell to bundle of His cell communication / epithelial structure maintenance / regulation of AV node cell action potential / gamma-delta T cell activation / transepithelial transport / germ cell migration / apicolateral plasma membrane ...AV node cell-bundle of His cell adhesion involved in cell communication / cell adhesive protein binding involved in AV node cell-bundle of His cell communication / homotypic cell-cell adhesion / AV node cell to bundle of His cell communication / epithelial structure maintenance / regulation of AV node cell action potential / gamma-delta T cell activation / transepithelial transport / germ cell migration / apicolateral plasma membrane / cell-cell junction organization / connexin binding / cardiac muscle cell development / heterophilic cell-cell adhesion via plasma membrane cell adhesion molecules / intercalated disc / bicellular tight junction / cell adhesion molecule binding / neutrophil chemotaxis / acrosomal vesicle / filopodium / mitochondrion organization / PDZ domain binding / Cell surface interactions at the vascular wall / adherens junction / neuromuscular junction / beta-catenin binding / Immunoregulatory interactions between a Lymphoid and a non-Lymphoid cell / cell-cell junction / integrin binding / cell junction / heart development / virus receptor activity / growth cone / cell body / actin cytoskeleton organization / basolateral plasma membrane / defense response to virus / neuron projection / membrane raft / signaling receptor binding / protein-containing complex / extracellular space / extracellular region / nucleoplasm / identical protein binding / plasma membrane / cytoplasm 類似検索 - 分子機能 | ||||||
生物種 | Homo sapiens (ヒト) | ||||||
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: 9 Å | ||||||
データ登録者 | Organtini, L.J. / Makhov, A.M. / Conway, J.F. / Hafenstein, S. / Carson, S.D. | ||||||
引用 | ジャーナル: J Virol / 年: 2014 タイトル: Kinetic and structural analysis of coxsackievirus B3 receptor interactions and formation of the A-particle. 著者: Lindsey J Organtini / Alexander M Makhov / James F Conway / Susan Hafenstein / Steven D Carson / 要旨: The coxsackievirus and adenovirus receptor (CAR) has been identified as the cellular receptor for group B coxsackieviruses, including serotype 3 (CVB3). CAR mediates infection by binding to CVB3 and ...The coxsackievirus and adenovirus receptor (CAR) has been identified as the cellular receptor for group B coxsackieviruses, including serotype 3 (CVB3). CAR mediates infection by binding to CVB3 and catalyzing conformational changes in the virus that result in formation of the altered, noninfectious A-particle. Kinetic analyses show that the apparent first-order rate constant for the inactivation of CVB3 by soluble CAR (sCAR) at physiological temperatures varies nonlinearly with sCAR concentration. Cryo-electron microscopy (cryo-EM) reconstruction of the CVB3-CAR complex resulted in a 9.0-Å resolution map that was interpreted with the four available crystal structures of CAR, providing a consensus footprint for the receptor binding site. The analysis of the cryo-EM structure identifies important virus-receptor interactions that are conserved across picornavirus species. These conserved interactions map to variable antigenic sites or structurally conserved regions, suggesting a combination of evolutionary mechanisms for receptor site preservation. The CAR-catalyzed A-particle structure was solved to a 6.6-Å resolution and shows significant rearrangement of internal features and symmetric interactions with the RNA genome. IMPORTANCE: This report presents new information about receptor use by picornaviruses and highlights the importance of attaining at least an ∼9-Å resolution for the interpretation of cryo-EM ...IMPORTANCE: This report presents new information about receptor use by picornaviruses and highlights the importance of attaining at least an ∼9-Å resolution for the interpretation of cryo-EM complex maps. The analysis of receptor binding elucidates two complementary mechanisms for preservation of the low-affinity (initial) interaction of the receptor and defines the kinetics of receptor-catalyzed conformational change to the A-particle. | ||||||
履歴 |
|
-構造の表示
ムービー |
ムービービューア |
---|---|
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 | 3j6m.cif.gz | 34.4 KB | 表示 | PDBx/mmCIF形式 |
---|---|---|---|---|
PDB形式 | pdb3j6m.ent.gz | 25.1 KB | 表示 | PDB形式 |
PDBx/mmJSON形式 | 3j6m.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 | 3j6m_validation.pdf.gz | 768.2 KB | 表示 | wwPDB検証レポート |
---|---|---|---|---|
文書・詳細版 | 3j6m_full_validation.pdf.gz | 772.1 KB | 表示 | |
XML形式データ | 3j6m_validation.xml.gz | 13.6 KB | 表示 | |
CIF形式データ | 3j6m_validation.cif.gz | 17.8 KB | 表示 | |
アーカイブディレクトリ | https://data.pdbj.org/pub/pdb/validation_reports/j6/3j6m ftp://data.pdbj.org/pub/pdb/validation_reports/j6/3j6m | 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
#1: タンパク質 | 分子量: 13640.500 Da / 分子数: 1 / 断片: UNP residues 21-144 / 由来タイプ: 組換発現 / 由来: (組換発現) Homo sapiens (ヒト) / 遺伝子: CXADR, CAR / 発現宿主: Escherichia coli (大腸菌) / 参照: UniProt: P78310 |
---|---|
#2: 水 | ChemComp-HOH / |
-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 |
| ||||||||||||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
分子量 | 値: 7 MDa / 実験値: YES | ||||||||||||||||||||
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 / ホストのカテゴリ: VERTEBRATES / 単離: STRAIN / タイプ: VIRION | ||||||||||||||||||||
天然宿主 | 生物種: Homo sapiens | ||||||||||||||||||||
緩衝液 | 名称: 50 mM MES, 100 mM NaCl / pH: 6 / 詳細: 50 mM MES, 100 mM NaCl | ||||||||||||||||||||
試料 | 濃度: 0.1 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: glow-discharged holey carbon Quantifoil electron microscopy grids | ||||||||||||||||||||
急速凍結 | 装置: FEI VITROBOT MARK III / 凍結剤: OTHER / Temp: 95 K / 湿度: 95 % / 詳細: Plunged into ethane-propane (FEI VITROBOT MARK III) |
-電子顕微鏡撮影
実験機器 | モデル: Tecnai F20 / 画像提供: FEI Company |
---|---|
顕微鏡 | モデル: FEI TECNAI F20 / 日付: 2012年8月1日 |
電子銃 | 電子線源: FIELD EMISSION GUN / 加速電圧: 200 kV / 照射モード: SPOT SCAN |
電子レンズ | モード: BRIGHT FIELD / 倍率(公称値): 50000 X / 倍率(補正後): 50000 X / 最大 デフォーカス(公称値): 3660 nm / 最小 デフォーカス(公称値): 1980 nm / Cs: 2 mm / 非点収差: CTFFIND3 / カメラ長: 0 mm |
試料ホルダ | 試料ホルダーモデル: GATAN LIQUID NITROGEN / 傾斜角・最大: 0 ° / 傾斜角・最小: 0 ° |
撮影 | 電子線照射量: 15 e/Å2 / フィルム・検出器のモデル: KODAK SO-163 FILM |
画像スキャン | デジタル画像の数: 96 |
放射 | プロトコル: SINGLE WAVELENGTH / 単色(M)・ラウエ(L): M / 散乱光タイプ: x-ray |
放射波長 | 相対比: 1 |
-解析
EMソフトウェア |
| ||||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|---|
CTF補正 | 詳細: AUTO3DEM | ||||||||||||
対称性 | 点対称性: I (正20面体型対称) | ||||||||||||
3次元再構成 | 手法: Common Lines / 解像度: 9 Å / 解像度の算出法: FSC 0.5 CUT-OFF / 粒子像の数: 9302 / ピクセルサイズ(公称値): 1.25 Å / ピクセルサイズ(実測値): 1.25 Å 詳細: (Single particle details: Particles were selected using EMAN) (Single particle--Applied symmetry: I) 対称性のタイプ: POINT | ||||||||||||
原子モデル構築 | プロトコル: RIGID BODY FIT / 空間: REAL / Target criteria: correlation coefficient / 詳細: REFINEMENT PROTOCOL--rigid body | ||||||||||||
原子モデル構築 | PDB-ID: 1KAC PDB chain-ID: B | ||||||||||||
精密化ステップ | サイクル: LAST
|