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データを開く
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基本情報
登録情報 | データベース: PDB / ID: 7rug | ||||||
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タイトル | Human SERINC3-DeltaICL4 | ||||||
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![]() | UNKNOWN FUNCTION / flippase / viral restriction / HIV-1 | ||||||
機能・相同性 | ![]() Serine biosynthesis / L-serine transmembrane transporter activity / positive regulation of endoplasmic reticulum stress-induced intrinsic apoptotic signaling pathway / L-serine biosynthetic process / detection of virus / defense response to virus / Golgi membrane / innate immune response / perinuclear region of cytoplasm / membrane / plasma membrane 類似検索 - 分子機能 | ||||||
生物種 | ![]() synthetic construct (人工物) | ||||||
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: 4.7 Å | ||||||
![]() | Purdy, M.D. / Leonhardt, S.A. / Yeager, M. | ||||||
資金援助 | ![]()
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![]() | ![]() タイトル: Antiviral HIV-1 SERINC restriction factors disrupt virus membrane asymmetry. 著者: Susan A Leonhardt / Michael D Purdy / Jonathan R Grover / Ziwei Yang / Sandra Poulos / William E McIntire / Elizabeth A Tatham / Satchal K Erramilli / Kamil Nosol / Kin Kui Lai / Shilei Ding ...著者: Susan A Leonhardt / Michael D Purdy / Jonathan R Grover / Ziwei Yang / Sandra Poulos / William E McIntire / Elizabeth A Tatham / Satchal K Erramilli / Kamil Nosol / Kin Kui Lai / Shilei Ding / Maolin Lu / Pradeep D Uchil / Andrés Finzi / Alan Rein / Anthony A Kossiakoff / Walther Mothes / Mark Yeager / ![]() ![]() 要旨: The host proteins SERINC3 and SERINC5 are HIV-1 restriction factors that reduce infectivity when incorporated into the viral envelope. The HIV-1 accessory protein Nef abrogates incorporation of ...The host proteins SERINC3 and SERINC5 are HIV-1 restriction factors that reduce infectivity when incorporated into the viral envelope. The HIV-1 accessory protein Nef abrogates incorporation of SERINCs via binding to intracellular loop 4 (ICL4). Here, we determine cryoEM maps of full-length human SERINC3 and an ICL4 deletion construct, which reveal that hSERINC3 is comprised of two α-helical bundles connected by a ~ 40-residue, highly tilted, "crossmember" helix. The design resembles non-ATP-dependent lipid transporters. Consistently, purified hSERINCs reconstituted into proteoliposomes induce flipping of phosphatidylserine (PS), phosphatidylethanolamine and phosphatidylcholine. Furthermore, SERINC3, SERINC5 and the scramblase TMEM16F expose PS on the surface of HIV-1 and reduce infectivity, with similar results in MLV. SERINC effects in HIV-1 and MLV are counteracted by Nef and GlycoGag, respectively. Our results demonstrate that SERINCs are membrane transporters that flip lipids, resulting in a loss of membrane asymmetry that is strongly correlated with changes in Env conformation and loss of infectivity. #1: ジャーナル: Protein Sci / 年: 2018 タイトル: UCSF ChimeraX: Meeting modern challenges in visualization and analysis. 著者: Thomas D Goddard / Conrad C Huang / Elaine C Meng / Eric F Pettersen / Gregory S Couch / John H Morris / Thomas E Ferrin / ![]() 要旨: UCSF ChimeraX is next-generation software for the visualization and analysis of molecular structures, density maps, 3D microscopy, and associated data. It addresses challenges in the size, scope, and ...UCSF ChimeraX is next-generation software for the visualization and analysis of molecular structures, density maps, 3D microscopy, and associated data. It addresses challenges in the size, scope, and disparate types of data attendant with cutting-edge experimental methods, while providing advanced options for high-quality rendering (interactive ambient occlusion, reliable molecular surface calculations, etc.) and professional approaches to software design and distribution. This article highlights some specific advances in the areas of visualization and usability, performance, and extensibility. ChimeraX is free for noncommercial use and is available from http://www.rbvi.ucsf.edu/chimerax/ for Windows, Mac, and Linux. | ||||||
履歴 |
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構造の表示
構造ビューア | 分子: ![]() ![]() |
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ダウンロードとリンク
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ダウンロード
PDBx/mmCIF形式 | ![]() | 132 KB | 表示 | ![]() |
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PDB形式 | ![]() | 98.5 KB | 表示 | ![]() |
PDBx/mmJSON形式 | ![]() | ツリー表示 | ![]() | |
その他 | ![]() |
-検証レポート
アーカイブディレクトリ | ![]() ![]() | HTTPS FTP |
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-関連構造データ
関連構造データ | ![]() 24705MC ![]() 7ru6C C: 同じ文献を引用 ( M: このデータのモデリングに利用したマップデータ |
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類似構造データ | 類似検索 - 機能・相同性 ![]() |
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リンク
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集合体
登録構造単位 | ![]()
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要素
#1: タンパク質 | 分子量: 52480.137 Da / 分子数: 1 / 変異: Delta 366-391 / 由来タイプ: 組換発現 / 詳細: 26 residues from intracellular loop 4 deleted / 由来: (組換発現) ![]() 発現宿主: ![]() ![]() Variant (発現宿主): Sf9 / 参照: UniProt: Q13530 |
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#2: 抗体 | 分子量: 25621.412 Da / 分子数: 1 / 由来タイプ: 組換発現 / 由来: (組換発現) synthetic construct (人工物) / 発現宿主: ![]() ![]() |
-実験情報
-実験
実験 | 手法: 電子顕微鏡法 |
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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 |
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試料調製
構成要素 | 名称: hSERINC3-DeltaICL4-SiA / タイプ: COMPLEX / 詳細: human SERINC3-DeltaICL4 with synthetic Fab SiA / Entity ID: all / 由来: MULTIPLE SOURCES | ||||||||||||||||||||
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分子量 | 値: 0.052440 MDa / 実験値: NO | ||||||||||||||||||||
由来(天然) | 生物種: ![]() | ||||||||||||||||||||
由来(組換発現) | 生物種: ![]() ![]() プラスミド: pFASTBAC1 | ||||||||||||||||||||
緩衝液 | pH: 7.5 詳細: Solutions were made fresh and filtered and degassed. | ||||||||||||||||||||
緩衝液成分 |
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試料 | 濃度: 4 mg/ml / 包埋: NO / シャドウイング: NO / 染色: NO / 凍結: YES | ||||||||||||||||||||
試料支持 | グリッドのタイプ: C-flat-1.2/1.3 | ||||||||||||||||||||
急速凍結 | 装置: FEI VITROBOT MARK IV / 凍結剤: ETHANE / 湿度: 95 % / 凍結前の試料温度: 277 K / 詳細: blot force 2 blot time 7 |
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電子顕微鏡撮影
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: ![]() |
電子レンズ | モード: BRIGHT FIELD / 最大 デフォーカス(公称値): 2200 nm / 最小 デフォーカス(公称値): 1000 nm / Calibrated defocus min: 1000 nm / 最大 デフォーカス(補正後): 2200 nm / Cs: 2.7 mm / C2レンズ絞り径: 70 µm / アライメント法: COMA FREE |
試料ホルダ | 凍結剤: NITROGEN 試料ホルダーモデル: FEI TITAN KRIOS AUTOGRID HOLDER |
撮影 | 電子線照射量: 58 e/Å2 / 検出モード: COUNTING フィルム・検出器のモデル: FEI FALCON III (4k x 4k) 撮影したグリッド数: 1 / 実像数: 3438 |
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解析
ソフトウェア | 名称: UCSF ChimeraX / バージョン: 0.91/v8 / 分類: モデル構築 / URL: https://www.rbvi.ucsf.edu/chimerax/ / Os: Linux / タイプ: package | ||||||||||||||||||||||||||||||||||||||||||||||||
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EMソフトウェア |
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CTF補正 | タイプ: PHASE FLIPPING AND AMPLITUDE CORRECTION | ||||||||||||||||||||||||||||||||||||||||||||||||
粒子像の選択 | 選択した粒子像数: 433000 | ||||||||||||||||||||||||||||||||||||||||||||||||
3次元再構成 | 解像度: 4.7 Å / 解像度の算出法: FSC 0.143 CUT-OFF / 粒子像の数: 140000 / アルゴリズム: FOURIER SPACE / クラス平均像の数: 1 / 対称性のタイプ: POINT | ||||||||||||||||||||||||||||||||||||||||||||||||
原子モデル構築 | B value: 262 / プロトコル: FLEXIBLE FIT / 空間: REAL / Target criteria: Correlation Coefficient 詳細: An initial hSERINC3 model was generated using AlphaFold v2.1 and the full database excluding PDB:6SP2. Low-confidence loops were removed from the model prior to fitting in the cryoEM map and ...詳細: An initial hSERINC3 model was generated using AlphaFold v2.1 and the full database excluding PDB:6SP2. Low-confidence loops were removed from the model prior to fitting in the cryoEM map and side chains were retained. |