ジャーナル: J Virol / 年: 2011 タイトル: The structure of barmah forest virus as revealed by cryo-electron microscopy at a 6-angstrom resolution has detailed transmembrane protein architecture and interactions. 著者: Victor A Kostyuchenko / Joanita Jakana / Xiangan Liu / Andrew D Haddow / Myint Aung / Scott C Weaver / Wah Chiu / Shee-Mei Lok / 要旨: Barmah Forest virus (BFV) is a mosquito-borne alphavirus that infects humans. A 6-Å-resolution cryo-electron microscopy three-dimensional structure of BFV exhibits a typical alphavirus organization, ...Barmah Forest virus (BFV) is a mosquito-borne alphavirus that infects humans. A 6-Å-resolution cryo-electron microscopy three-dimensional structure of BFV exhibits a typical alphavirus organization, with RNA-containing nucleocapsid surrounded by a bilipid membrane anchored with the surface proteins E1 and E2. The map allows details of the transmembrane regions of E1 and E2 to be seen. The C-terminal end of the E2 transmembrane helix binds to the capsid protein. Following the E2 transmembrane helix, a short α-helical endodomain lies on the inner surface of the lipid envelope. The E2 endodomain interacts with E1 transmembrane helix from a neighboring E1-E2 trimeric spike, thereby acting as a spacer and a linker between spikes. In agreement with previous mutagenesis studies, the endodomain plays an important role in recruiting other E1-E2 spikes to the budding site during virus assembly. The E2 endodomain may thus serve as a target for antiviral drug design.
履歴
登録
2011年3月31日
登録サイト: PDBE / 処理サイト: PDBE
改定 1.0
2012年4月18日
Provider: repository / タイプ: Initial release
改定 1.1
2013年3月20日
Group: Other
改定 1.2
2017年8月23日
Group: Data collection / カテゴリ: em_software Item: _em_software.fitting_id / _em_software.image_processing_id
改定 1.3
2019年10月23日
Group: Data collection / Other / カテゴリ: cell / Item: _cell.Z_PDB
モード: BRIGHT FIELD / 倍率(公称値): 50000 X / 最大 デフォーカス(公称値): 3500 nm / 最小 デフォーカス(公称値): 500 nm / Cs: 4.1 mm
試料ホルダ
温度: 100 K
撮影
電子線照射量: 20 e/Å2 / フィルム・検出器のモデル: GENERIC GATAN
画像スキャン
デジタル画像の数: 760
放射波長
相対比: 1
-
解析
EMソフトウェア
ID
名称
カテゴリ
1
UCSF Chimera
モデルフィッティング
2
EMAN
3次元再構成
3
MPSA
3次元再構成
CTF補正
詳細: INDIVIDUAL PARTICLES
対称性
点対称性: I (正20面体型対称)
3次元再構成
手法: CROSS-COMMON LINES, MULTIPATH SIMULTANEOUS ANNEALING PROTOCOL 解像度: 5 Å / 粒子像の数: 5169 / ピクセルサイズ(公称値): 1.42 Å / ピクセルサイズ(実測値): 1.42 Å 詳細: THE MODELS WERE BUILD USING MODELLER FOR HOMOLOGY -BASED MODELLING AND USING VMD WITH NAMD FOR FLEXIBLE FITTING INTO CRYO-EM DENSITY. CHAIN A DOES NOT CONTAIN RNA-BINDING PART, ABOUT 80 N- ...詳細: THE MODELS WERE BUILD USING MODELLER FOR HOMOLOGY -BASED MODELLING AND USING VMD WITH NAMD FOR FLEXIBLE FITTING INTO CRYO-EM DENSITY. CHAIN A DOES NOT CONTAIN RNA-BINDING PART, ABOUT 80 N-TERMINAL RESIDUES. THE STRUCTURE WAS MODELED BASED ON HOMOLOGY TO PROTEIN WITH KNOWN STURUCTURE AND CRYO-EM DENSITY FITTING. SUBMISSION BASED ON EXPERIMENTAL DATA FROM EMDB EMD- 1886. (DEPOSITION ID: 7893). 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 / 詳細: REFINEMENT PROTOCOL--RIGID BODY