+データを開く
-基本情報
登録情報 | データベース: EMDB / ID: EMD-1596 | |||||||||
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タイトル | HIV-1 Env spike maps using various alignment and classfication combinations | |||||||||
マップデータ | Classified HIV-1 Env spikes using different alignment and classification strategies. | |||||||||
試料 |
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キーワード | HIV-1 / envelope spike | |||||||||
生物種 | Human immunodeficiency virus 1 (ヒト免疫不全ウイルス) | |||||||||
手法 | サブトモグラム平均法 / クライオ電子顕微鏡法 | |||||||||
データ登録者 | Zhu P / Winkler H / Chertova E / Taylor KA / Roux KH | |||||||||
引用 | ジャーナル: PLoS Pathog / 年: 2008 タイトル: Cryoelectron tomography of HIV-1 envelope spikes: further evidence for tripod-like legs. 著者: Ping Zhu / Hanspeter Winkler / Elena Chertova / Kenneth A Taylor / Kenneth H Roux / 要旨: A detailed understanding of the morphology of the HIV-1 envelope (Env) spike is key to understanding viral pathogenesis and for informed vaccine design. We have previously presented a cryoelectron ...A detailed understanding of the morphology of the HIV-1 envelope (Env) spike is key to understanding viral pathogenesis and for informed vaccine design. We have previously presented a cryoelectron microscopic tomogram (cryoET) of the Env spikes on SIV virions. Several structural features were noted in the gp120 head and gp41 stalk regions. Perhaps most notable was the presence of three splayed legs projecting obliquely from the base of the spike head toward the viral membrane. Subsequently, a second 3D image of SIV spikes, also obtained by cryoET, was published by another group which featured a compact vertical stalk. We now report the cryoET analysis of HIV-1 virion-associated Env spikes using enhanced analytical cryoET procedures. More than 2,000 Env spike volumes were initially selected, aligned, and sorted into structural classes using algorithms that compensate for the "missing wedge" and do not impose any symmetry. The results show varying morphologies between structural classes: some classes showed trimers in the head domains; nearly all showed two or three legs, though unambiguous three-fold symmetry was not observed either in the heads or the legs. Subsequently, clearer evidence of trimeric head domains and three splayed legs emerged when head and leg volumes were independently aligned and classified. These data show that HIV-1, like SIV, also displays the tripod-like leg configuration, and, unexpectedly, shows considerable gp41 leg flexibility/heteromorphology. The tripod-like model for gp41 is consistent with, and helps explain, many of the unique biophysical and immunological features of this region. | |||||||||
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 | EMマップ: SurfViewMolmilJmol/JSmol |
添付画像 |
-ダウンロードとリンク
-EMDBアーカイブ
マップデータ | emd_1596.map.gz | 931.5 KB | EMDBマップデータ形式 | |
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ヘッダ (付随情報) | emd-1596-v30.xml emd-1596.xml | 8.2 KB 8.2 KB | 表示 表示 | EMDBヘッダ |
画像 | 1596.gif emd_1596_2.jpg | 49.2 KB 17.8 KB | ||
その他 | 1596_class_maps.zip readme.txt | 36.4 MB 779 B | ||
アーカイブディレクトリ | http://ftp.pdbj.org/pub/emdb/structures/EMD-1596 ftp://ftp.pdbj.org/pub/emdb/structures/EMD-1596 | HTTPS FTP |
-検証レポート
文書・要旨 | emd_1596_validation.pdf.gz | 222.6 KB | 表示 | EMDB検証レポート |
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文書・詳細版 | emd_1596_full_validation.pdf.gz | 221.7 KB | 表示 | |
XML形式データ | emd_1596_validation.xml.gz | 5.1 KB | 表示 | |
アーカイブディレクトリ | https://ftp.pdbj.org/pub/emdb/validation_reports/EMD-1596 ftp://ftp.pdbj.org/pub/emdb/validation_reports/EMD-1596 | HTTPS FTP |
-関連構造データ
-リンク
EMDBのページ | EMDB (EBI/PDBe) / EMDataResource |
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「今月の分子」の関連する項目 |
-マップ
ファイル | ダウンロード / ファイル: emd_1596.map.gz / 形式: CCP4 / 大きさ: 1001 KB / タイプ: IMAGE STORED AS FLOATING POINT NUMBER (4 BYTES) | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
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注釈 | Classified HIV-1 Env spikes using different alignment and classification strategies. | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
投影像・断面図 | 画像のコントロール
画像は Spider により作成 | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
ボクセルのサイズ | X=Y=Z: 5.56 Å | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
密度 |
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対称性 | 空間群: 1 | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
詳細 | EMDB XML:
CCP4マップ ヘッダ情報:
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-添付データ
-その他
詳細 | [readme.txt] Reference: Zhu P, Winkler H, Chertova E, Taylor KA, Roux KH (2008) Cryoelectron Tomography of HIV-1 Envelope Spikes: Further Evidence for Tripod-Like Legs. PLoS Pathog 4(11): e1000203. The folders in 1596_class_maps.zip consist of aligned and classified HIV-1 Env spikes maps using various alignment and classification combinations as shown in figure 3 of the reference. Please refer back to the reference for details. A_WW: Panel A Aligned: whole, Classified: whole B_WH: Panel B Aligned: whole, Classified: head C_WL: Panel C Aligned: whole, Classified: legs D_HH: Panel D Aligned: head, Classified: head E_LL: Panel E Aligned: legs, Classified: legs In each subfolder, *-cls-[1-8].map: eight classes produced for each combination |
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ファイル | 1596_class_maps.zip (36.4 MB) |
-試料の構成要素
-全体 : HIV-1 BaL / SUPT1-CCR5 CL.30, provided by the AIDS Vaccine Progra...
全体 | 名称: HIV-1 BaL / SUPT1-CCR5 CL.30, provided by the AIDS Vaccine Program, SAIC Frederick, Inc., NCI, Frederick, MD. Lot p3955. |
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要素 |
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-超分子 #1000: HIV-1 BaL / SUPT1-CCR5 CL.30, provided by the AIDS Vaccine Progra...
超分子 | 名称: HIV-1 BaL / SUPT1-CCR5 CL.30, provided by the AIDS Vaccine Program, SAIC Frederick, Inc., NCI, Frederick, MD. Lot p3955. タイプ: sample / ID: 1000 詳細: The envelope spikes are distributed on the surface of HIV-1 virions. 集合状態: Highly purified virus. The envelope spikes on the virion surface are trimer. Number unique components: 1 |
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-超分子 #1: Human immunodeficiency virus 1
超分子 | 名称: Human immunodeficiency virus 1 / タイプ: virus / ID: 1 / Name.synonym: HIV-1 BaL SUPT1-CCR5 CL.30 詳細: The envelope spikes are distributed on the surface of HIV-1 virions. NCBI-ID: 11676 / 生物種: Human immunodeficiency virus 1 / データベース: NCBI / ウイルスタイプ: VIRION / ウイルス・単離状態: STRAIN / ウイルス・エンベロープ: Yes / ウイルス・中空状態: No / Syn species name: HIV-1 BaL SUPT1-CCR5 CL.30 |
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宿主 | 生物種: Homo sapiens (ヒト) / 別称: VERTEBRATES |
-実験情報
-構造解析
手法 | クライオ電子顕微鏡法 |
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解析 | サブトモグラム平均法 |
-試料調製
濃度 | 2.8 mg/mL |
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緩衝液 | pH: 7.4 / 詳細: Originally in TNE, resuspend in PBS |
凍結 | 凍結剤: ETHANE / 装置: HOMEMADE PLUNGER 詳細: Vitrification instrument: Home made. Vitrification carried out in cold room 手法: Blot for 5-6 seconds before plunging |
-電子顕微鏡法
顕微鏡 | FEI/PHILIPS CM300FEG/T |
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撮影 | 平均電子線量: 1.5 e/Å2 |
電子線 | 加速電圧: 300 kV / 電子線源: FIELD EMISSION GUN |
電子光学系 | 照射モード: FLOOD BEAM / 撮影モード: BRIGHT FIELD / Cs: 2 mm / 最大 デフォーカス(公称値): 4.0 µm / 倍率(公称値): 43200 |
試料ステージ | 試料ホルダー: Eucentric / 試料ホルダーモデル: GATAN LIQUID NITROGEN |
-画像解析
最終 再構成 | ソフトウェア - 名称: Protomo |
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