+データを開く
-基本情報
登録情報 | データベース: PDB / ID: 5o4x | ||||||
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タイトル | Protein structure determination by electron diffraction using a single three-dimensional nanocrystal | ||||||
要素 | Lysozyme C | ||||||
キーワード | HYDROLASE / lysozyme / nanocrystal | ||||||
機能・相同性 | 機能・相同性情報 Lactose synthesis / Antimicrobial peptides / Neutrophil degranulation / beta-N-acetylglucosaminidase activity / cell wall macromolecule catabolic process / lysozyme / lysozyme activity / defense response to Gram-negative bacterium / killing of cells of another organism / defense response to Gram-positive bacterium ...Lactose synthesis / Antimicrobial peptides / Neutrophil degranulation / beta-N-acetylglucosaminidase activity / cell wall macromolecule catabolic process / lysozyme / lysozyme activity / defense response to Gram-negative bacterium / killing of cells of another organism / defense response to Gram-positive bacterium / defense response to bacterium / endoplasmic reticulum / extracellular space / identical protein binding / cytoplasm 類似検索 - 分子機能 | ||||||
生物種 | Gallus gallus (ニワトリ) | ||||||
手法 | 電子線結晶学 / 分子置換 / クライオ電子顕微鏡法 / 解像度: 2.11 Å | ||||||
データ登録者 | Clabbers, M.T.B. / van Genderen, E. / Wan, W. / Wiegers, E.L. / Gruene, T. / Abrahams, J.P. | ||||||
引用 | ジャーナル: Acta Crystallogr D Struct Biol / 年: 2017 タイトル: Protein structure determination by electron diffraction using a single three-dimensional nanocrystal. 著者: M T B Clabbers / E van Genderen / W Wan / E L Wiegers / T Gruene / J P Abrahams / 要旨: Three-dimensional nanometre-sized crystals of macromolecules currently resist structure elucidation by single-crystal X-ray crystallography. Here, a single nanocrystal with a diffracting volume of ...Three-dimensional nanometre-sized crystals of macromolecules currently resist structure elucidation by single-crystal X-ray crystallography. Here, a single nanocrystal with a diffracting volume of only 0.14 µm, i.e. no more than 6 × 10 unit cells, provided sufficient information to determine the structure of a rare dimeric polymorph of hen egg-white lysozyme by electron crystallography. This is at least an order of magnitude smaller than was previously possible. The molecular-replacement solution, based on a monomeric polyalanine model, provided sufficient phasing power to show side-chain density, and automated model building was used to reconstruct the side chains. Diffraction data were acquired using the rotation method with parallel beam diffraction on a Titan Krios transmission electron microscope equipped with a novel in-house-designed 1024 × 1024 pixel Timepix hybrid pixel detector for low-dose diffraction data collection. Favourable detector characteristics include the ability to accurately discriminate single high-energy electrons from X-rays and count them, fast readout to finely sample reciprocal space and a high dynamic range. This work, together with other recent milestones, suggests that electron crystallography can provide an attractive alternative in determining biological structures. | ||||||
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 | 5o4x.cif.gz | 61.8 KB | 表示 | PDBx/mmCIF形式 |
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PDB形式 | pdb5o4x.ent.gz | 45.1 KB | 表示 | PDB形式 |
PDBx/mmJSON形式 | 5o4x.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 | 5o4x_validation.pdf.gz | 409.8 KB | 表示 | wwPDB検証レポート |
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文書・詳細版 | 5o4x_full_validation.pdf.gz | 411.4 KB | 表示 | |
XML形式データ | 5o4x_validation.xml.gz | 10.7 KB | 表示 | |
CIF形式データ | 5o4x_validation.cif.gz | 13.9 KB | 表示 | |
アーカイブディレクトリ | https://data.pdbj.org/pub/pdb/validation_reports/o4/5o4x ftp://data.pdbj.org/pub/pdb/validation_reports/o4/5o4x | 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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単位格子 |
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非結晶学的対称性 (NCS) | NCSドメイン:
NCSドメイン領域: Component-ID: 1 / Ens-ID: 1 / Beg auth comp-ID: LYS / Beg label comp-ID: LYS / End auth comp-ID: LEU / End label comp-ID: LEU / Refine code: 1 / Auth seq-ID: 1 - 129 / Label seq-ID: 1 - 129
NCS oper:
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-要素
#1: タンパク質 | 分子量: 14331.160 Da / 分子数: 2 / 由来タイプ: 天然 / 由来: (天然) Gallus gallus (ニワトリ) / 参照: UniProt: P00698, lysozyme |
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-実験情報
-実験
実験 | 手法: 電子線結晶学 |
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EM実験 | 試料の集合状態: 3D ARRAY / 3次元再構成法: 電子線結晶学 |
-試料調製
構成要素 | 名称: Lysozyme C / タイプ: ORGANELLE OR CELLULAR COMPONENT / Entity ID: all / 由来: NATURAL |
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由来(天然) | 生物種: Gallus gallus (ニワトリ) |
緩衝液 | pH: 3.8 |
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 |
-データ収集
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: 200 kV / 照射モード: OTHER |
電子レンズ | モード: DIFFRACTION |
撮影 | 電子線照射量: 0.04 e/Å2 / フィルム・検出器のモデル: OTHER |
EM回折 | カメラ長: 2055 mm |
EM回折 シェル | 解像度: 2.11→57.03 Å / フーリエ空間範囲: 61.24 % / 多重度: 4.8 / 構造因子数: 8503 / 位相残差: 179.9 ° |
EM回折 統計 | 詳細: Parameters where extreme values were added are not applicable to our experiment and can not be filled out because there is no experimental data, these include Rsym, overall phase error, ...詳細: Parameters where extreme values were added are not applicable to our experiment and can not be filled out because there is no experimental data, these include Rsym, overall phase error, overall phase residual and phase error rejection フーリエ空間範囲: 61.24 % / 再高解像度: 2.11 Å / 測定した強度の数: 41191 / 構造因子数: 8503 / 位相誤差: 179.9 ° / 位相残差: 179.9 ° / 位相誤差の除外基準: 9999 / Rmerge: 39.8 / Rsym: 100 |
-解析
ソフトウェア | 名称: REFMAC / バージョン: 5.8.0158 / 分類: 精密化 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
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EM 3D crystal entity | ∠α: 90 ° / ∠β: 90 ° / ∠γ: 90 ° / A: 104.56 Å / B: 68.05 Å / C: 32.05 Å / 空間群名: P21212 / 空間群番号: 18 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
CTF補正 | タイプ: NONE | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
3次元再構成 | 解像度の算出法: DIFFRACTION PATTERN/LAYERLINES / 対称性のタイプ: 3D CRYSTAL | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
原子モデル構築 | プロトコル: OTHER | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
精密化 | 構造決定の手法: 分子置換 開始モデル: 2ybl 解像度: 2.11→57.03 Å / Cor.coef. Fo:Fc: 0.905 / SU B: 10.574 / SU ML: 0.263 / 交差検証法: NONE / ESU R: 1.306 詳細: We present Rcomplete instead of Rfree, calculating Rcomplete takes into account all reflections which is preferred when considering data sets with less than about 10,000 unique reflections ...詳細: We present Rcomplete instead of Rfree, calculating Rcomplete takes into account all reflections which is preferred when considering data sets with less than about 10,000 unique reflections [Brunger (1997) Methods in Enzymology 277:366-396, Luebben & Gruene (2015) PNAS 112:8999-9003]. To calculate Rcomplete a 0.2% test set size was chosen i.e. 500 test sets were created. First all non-measured observations were removed from the reflection file, and the 500 test sets were assigned at random. The model was then refined independently each time omitting one of the different test sets, thus in total 500 iterations. Each time refinement was carried out until practically reaching convergence. Finally, the value for Rcomplete was calculated from the excluded data i.e. calculated from all reflections. Since all structure factors are used in turn this leads to a more robust calculation than Rfree.
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溶媒の処理 | イオンプローブ半径: 0.8 Å / 減衰半径: 0.8 Å / VDWプローブ半径: 1.2 Å | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
原子変位パラメータ | Biso mean: 26.968 Å2
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精密化ステップ | サイクル: 1 / 合計: 2000 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
拘束条件 |
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