+データを開く
-基本情報
登録情報 | データベース: PDB / ID: 6x58 | ||||||
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タイトル | MPER-Fluc-Ec2 bound to 10E8v4 antibody | ||||||
要素 |
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キーワード | MEMBRANE PROTEIN / antibody / chaperone / MEMBRANE PROTEIN-IMMUNE SYSTEM complex | ||||||
機能・相同性 | 機能・相同性情報 fluoride channel activity / cellular detoxification of fluoride / positive regulation of plasma membrane raft polarization / positive regulation of receptor clustering / positive regulation of establishment of T cell polarity / host cell endosome membrane / clathrin-dependent endocytosis of virus by host cell / viral protein processing / fusion of virus membrane with host plasma membrane / virus-mediated perturbation of host defense response ...fluoride channel activity / cellular detoxification of fluoride / positive regulation of plasma membrane raft polarization / positive regulation of receptor clustering / positive regulation of establishment of T cell polarity / host cell endosome membrane / clathrin-dependent endocytosis of virus by host cell / viral protein processing / fusion of virus membrane with host plasma membrane / virus-mediated perturbation of host defense response / fusion of virus membrane with host endosome membrane / viral envelope / virion attachment to host cell / apoptotic process / host cell plasma membrane / structural molecule activity / virion membrane / membrane / metal ion binding / plasma membrane 類似検索 - 分子機能 | ||||||
生物種 | Homo sapiens (ヒト) Human immunodeficiency virus (ヒト免疫不全ウイルス) Escherichia coli (大腸菌) | ||||||
手法 | X線回折 / シンクロトロン / 分子置換 / 解像度: 3.26 Å | ||||||
データ登録者 | McIlwain, B.C. / Stockbridge, R.B. | ||||||
資金援助 | 米国, 1件
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引用 | ジャーナル: J Mol Biol / 年: 2021 タイトル: N-terminal Transmembrane-Helix Epitope Tag for X-ray Crystallography and Electron Microscopy of Small Membrane Proteins. 著者: Benjamin C McIlwain / Amanda L Erwin / Alexander R Davis / B Ben Koff / Louise Chang / Tatsiana Bylund / Gwo-Yu Chuang / Peter D Kwong / Melanie D Ohi / Yen-Ting Lai / Randy B Stockbridge / 要旨: Structural studies of membrane proteins, especially small membrane proteins, are associated with well-known experimental challenges. Complexation with monoclonal antibody fragments is a common ...Structural studies of membrane proteins, especially small membrane proteins, are associated with well-known experimental challenges. Complexation with monoclonal antibody fragments is a common strategy to augment such proteins; however, generating antibody fragments that specifically bind a target protein is not trivial. Here we identify a helical epitope, from the membrane-proximal external region (MPER) of the gp41-transmembrane subunit of the HIV envelope protein, that is recognized by several well-characterized antibodies and that can be fused as a contiguous extension of the N-terminal transmembrane helix of a broad range of membrane proteins. To analyze whether this MPER-epitope tag might aid structural studies of small membrane proteins, we determined an X-ray crystal structure of a membrane protein target that does not crystallize without the aid of crystallization chaperones, the Fluc fluoride channel, fused to the MPER epitope and in complex with antibody. We also demonstrate the utility of this approach for single particle electron microscopy with Fluc and two additional small membrane proteins that represent different membrane protein folds, AdiC and GlpF. These studies show that the MPER epitope provides a structurally defined, rigid docking site for antibody fragments that is transferable among diverse membrane proteins and can be engineered without prior structural information. Antibodies that bind to the MPER epitope serve as effective crystallization chaperones and electron microscopy fiducial markers, enabling structural studies of challenging small membrane proteins. | ||||||
履歴 |
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-構造の表示
構造ビューア | 分子: MolmilJmol/JSmol |
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-ダウンロードとリンク
-ダウンロード
PDBx/mmCIF形式 | 6x58.cif.gz | 230.8 KB | 表示 | PDBx/mmCIF形式 |
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PDB形式 | pdb6x58.ent.gz | 185.1 KB | 表示 | PDB形式 |
PDBx/mmJSON形式 | 6x58.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 | 6x58_validation.pdf.gz | 473.5 KB | 表示 | wwPDB検証レポート |
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文書・詳細版 | 6x58_full_validation.pdf.gz | 496.3 KB | 表示 | |
XML形式データ | 6x58_validation.xml.gz | 40.8 KB | 表示 | |
CIF形式データ | 6x58_validation.cif.gz | 55.3 KB | 表示 | |
アーカイブディレクトリ | https://data.pdbj.org/pub/pdb/validation_reports/x5/6x58 ftp://data.pdbj.org/pub/pdb/validation_reports/x5/6x58 | 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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1 |
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単位格子 |
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-要素
#1: 抗体 | 分子量: 25138.002 Da / 分子数: 2 / 由来タイプ: 組換発現 / 由来: (組換発現) Homo sapiens (ヒト) / 細胞株 (発現宿主): HEK / 発現宿主: Homo sapiens (ヒト) / 株 (発現宿主): Expi293 #2: 抗体 | 分子量: 22560.049 Da / 分子数: 2 / 由来タイプ: 組換発現 / 由来: (組換発現) Homo sapiens (ヒト) / 細胞株 (発現宿主): HEK / 発現宿主: Homo sapiens (ヒト) / 株 (発現宿主): Expi293 #3: タンパク質 | 分子量: 15383.293 Da / 分子数: 2 / Mutation: R25K,A51M in transporter / 由来タイプ: 組換発現 由来: (組換発現) Human immunodeficiency virus (ヒト免疫不全ウイルス), (組換発現) Escherichia coli (大腸菌) 遺伝子: env, crcB, crcB_2, flc_2, AC789_145pl00540, AKG29_01220, B6V57_25995, B7C53_24430, B9T59_30510, BANRA_05655, BANRA_05710, BEN53_26765, BIU72_24510, BK292_28205, BK334_22235, BK373_23795, ...遺伝子: env, crcB, crcB_2, flc_2, AC789_145pl00540, AKG29_01220, B6V57_25995, B7C53_24430, B9T59_30510, BANRA_05655, BANRA_05710, BEN53_26765, BIU72_24510, BK292_28205, BK334_22235, BK373_23795, BON66_22385, BON69_17555, BON72_04410, BON76_23080, BON86_18360, BON94_16600, BVL39_28685, C2M16_27610, C4K41_18470, C4M78_26960, C5F73_28830, C5P01_26640, C5P44_26785, C6B13_25705, C7B08_22045, C9160_28010, C9201_28610, C9E25_24405, CDL37_21115, CSB64_25975, CWS33_26140, D1912_23150, D2184_26920, D2188_23810, D4U49_23430, D7W70_25855, D7Y10_22455, D9C99_23085, D9D33_24680, D9D94_24325, D9F87_24785, D9G11_25285, D9H70_24700, D9J44_26040, D9J61_22795, D9K02_24930, D9K48_12550, D9K54_12845, D9L99_22160, DAH18_26070, DB359_26980, DL545_01300, DLU67_24300, DLU82_24070, DN808_21420, DNI21_22025, DNQ45_14105, DNX19_24210, DP265_23725, DP277_24230, DQF72_24030, DS966_25260, DTL90_25845, DWB25_27055, E2112_25200, E2148_25435, EA239_25270, EA250_26195, EA429_25950, EA435_26495, ECONIH1_26550, ECS286_0026, EIA08_25210, EIZ93_19245, EJ366_00165, ELT22_23900, ELT58_23370, ELX56_24555, ELX56_26650, ELY05_20840, ELY05_25530, EPS76_20210, EVY14_24275, ExPECSC038_03841, EXX06_27990, EXX23_23730, EXX55_27910, EXX87_27755, EYX82_20275, F0L67_16895, F1E19_23340, F9050_24150, FORC82_p488, FQU83_00900, G3565_28150, GP698_23185, GQE58_24285, HVW93_24610, HXS78_24215, MJ49_27125, NCTC9001_00147, NCTC9077_06349, NCTC9434_05106, NCTC9969_05488, pCTXM15_EC8_00123, pO103_22, RCS79_P0115, SAMEA3472090_04449, SAMEA3752620_04806, SAMEA3753164_04868, SAMEA4370473_00090, TUM18780_48590, WP2S18E08_P10360, WP5S18E08_P10940 発現宿主: Escherichia coli (大腸菌) / 参照: UniProt: Q73372, UniProt: Q6J5N4 |
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-実験情報
-実験
実験 | 手法: X線回折 / 使用した結晶の数: 1 |
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-試料調製
結晶 | マシュー密度: 3.8 Å3/Da / 溶媒含有率: 67.66 % |
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結晶化 | 温度: 294 K / 手法: 蒸気拡散法, シッティングドロップ法 / 詳細: 34-39% PEG 300, 0.1 M NaCl, 0.1 M MES pH 6.2-7 / PH範囲: 6.2-7 |
-データ収集
回折 | 平均測定温度: 100 K / Serial crystal experiment: N | ||||||||||||||||||||||||||||||
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放射光源 | 由来: シンクロトロン / サイト: APS / ビームライン: 21-ID-D / 波長: 0.976 Å | ||||||||||||||||||||||||||||||
検出器 | タイプ: DECTRIS EIGER X 9M / 検出器: PIXEL / 日付: 2019年6月9日 | ||||||||||||||||||||||||||||||
放射 | プロトコル: SINGLE WAVELENGTH / 単色(M)・ラウエ(L): M / 散乱光タイプ: x-ray | ||||||||||||||||||||||||||||||
放射波長 | 波長: 0.976 Å / 相対比: 1 | ||||||||||||||||||||||||||||||
反射 | 解像度: 3.26→38.18 Å / Num. obs: 28368 / % possible obs: 98.6 % / 冗長度: 10.8 % / CC1/2: 0.999 / Rmerge(I) obs: 0.135 / Rpim(I) all: 0.043 / Rrim(I) all: 0.141 / Net I/σ(I): 10.3 / Num. measured all: 306181 / Scaling rejects: 3 | ||||||||||||||||||||||||||||||
反射 シェル | Diffraction-ID: 1
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-解析
ソフトウェア |
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精密化 | 構造決定の手法: 分子置換 開始モデル: 5A43 解像度: 3.26→34.02 Å / SU ML: 0.68 / 交差検証法: THROUGHOUT / σ(F): 1.96 / 位相誤差: 39.74 / 立体化学のターゲット値: ML
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溶媒の処理 | 減衰半径: 0.9 Å / VDWプローブ半径: 1.11 Å / 溶媒モデル: FLAT BULK SOLVENT MODEL | ||||||||||||||||||||
原子変位パラメータ | Biso max: 322.54 Å2 / Biso mean: 159.7412 Å2 / Biso min: 30 Å2 | ||||||||||||||||||||
精密化ステップ | サイクル: final / 解像度: 3.26→34.02 Å
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