- EMDB-1587: ab initio 3D reconstruction of GroEL using 3DESS (3D alignment by... -
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基本情報
登録情報
データベース: EMDB / ID: EMD-1587
タイトル
ab initio 3D reconstruction of GroEL using 3DESS (3D alignment by differential Evolution with Spectral Self-adaptation), which is a new high-resolution single-particle orientation refinement method based on spectrally self-adapting common lines
マップデータ
ab initio 3D reconstruction of GroEL using 3DESS
試料
試料: GroEL data provided by National Resource for Automated Molecular Microscopy
ジャーナル: J Struct Biol / 年: 2009 タイトル: High-resolution single-particle orientation refinement based on spectrally self-adapting common lines. 著者: Dominika Elmlund / Hans Elmlund / 要旨: Three-dimensional (3D) structure determination from electron microscopic images of single molecules can be difficult for particles with low or no internal symmetry, and for images with low signal-to- ...Three-dimensional (3D) structure determination from electron microscopic images of single molecules can be difficult for particles with low or no internal symmetry, and for images with low signal-to-noise ratio (SNR), due to the existence of false maxima in the scoring function used for orientation search. In attempt to improve robustness of orientation parameter refinement towards noise and poor starting reconstruction quality, we have developed a method for common lines-based orientation search in Fourier space. The Fourier-space formulation enables inclusion of resolution (spatial frequency of the low-pass limit) as a variable that is adjusted in a particle-dependent, self-adaptive manner. The method allows for the underlying 3D structure to be estimated to high resolution, and requires only a crude, low-resolution reconstruction as starting-point for refinement. Benchmarking of the method is performed on experimental and synthetic data.
全体 : GroEL data provided by National Resource for Automated Molecular ...
全体
名称: GroEL data provided by National Resource for Automated Molecular Microscopy
要素
試料: GroEL data provided by National Resource for Automated Molecular Microscopy
細胞器官・細胞要素: GroEL
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超分子 #1000: GroEL data provided by National Resource for Automated Molecular ...
超分子
名称: GroEL data provided by National Resource for Automated Molecular Microscopy タイプ: sample / ID: 1000 詳細: All sample details described in Stagg, S. M. et al. A test-bed for optimizing high-resolution single particle reconstructions, JSB 2008, 163(1), 29-39 集合状態: 14-meric and d7 symmetric GroEL / Number unique components: 1
All imaging details described in Stagg, S. M. et al. A test-bed for optimizing high-resolution single particle reconstructions, JSB 2008, 163(1), 29-39
撮影
詳細: All image processing details described in Stagg, S. M. et al. A test-bed for optimizing high-resolution single particle
All experimental details described in Stagg, S. M. et al. A test-bed for optimizing high-resolution single particle reconstructions, JSB 2008, 163(1), 29-39
CTF補正
詳細: each micrograph, phase flipping only
最終 再構成
想定した対称性 - 点群: D7 (2回x7回 2面回転対称) アルゴリズム: OTHER / 解像度のタイプ: BY AUTHOR / 解像度: 7.0 Å / 解像度の算出法: FSC 0.5 CUT-OFF / ソフトウェア - 名称: Evol-Align