- PDB-6glx: Structure of galectin-10 in complex with the Fab fragment of a Ch... -
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基本情報
登録情報
データベース: PDB / ID: 6glx
タイトル
Structure of galectin-10 in complex with the Fab fragment of a Charcot-Leyden crystal solubilizing antibody, 4E8
要素
Fab 4E8 - Heavy chain
Fab 4E8 - Light chain
Galectin-10
キーワード
SUGAR BINDING PROTEIN / Fab / galectin-10 / autocrystallizing / crystal solubilisation
機能・相同性
機能・相同性情報
regulation of activated T cell proliferation / regulation of T cell cytokine production / T cell apoptotic process / regulation of T cell anergy / : / carbohydrate binding / collagen-containing extracellular matrix / identical protein binding / cytosol 類似検索 - 分子機能
ジャーナル: Science / 年: 2019 タイトル: Protein crystallization promotes type 2 immunity and is reversible by antibody treatment. 著者: Emma K Persson / Kenneth Verstraete / Ines Heyndrickx / Elien Gevaert / Helena Aegerter / Jean-Michel Percier / Kim Deswarte / Koen H G Verschueren / Ann Dansercoer / Delphine Gras / Pascal ...著者: Emma K Persson / Kenneth Verstraete / Ines Heyndrickx / Elien Gevaert / Helena Aegerter / Jean-Michel Percier / Kim Deswarte / Koen H G Verschueren / Ann Dansercoer / Delphine Gras / Pascal Chanez / Claus Bachert / Amanda Gonçalves / Hanne Van Gorp / Hans De Haard / Christophe Blanchetot / Michael Saunders / Hamida Hammad / Savvas N Savvides / Bart N Lambrecht / 要旨: Although spontaneous protein crystallization is a rare event in vivo, Charcot-Leyden crystals (CLCs) consisting of galectin-10 (Gal10) protein are frequently observed in eosinophilic diseases, such ...Although spontaneous protein crystallization is a rare event in vivo, Charcot-Leyden crystals (CLCs) consisting of galectin-10 (Gal10) protein are frequently observed in eosinophilic diseases, such as asthma. We found that CLCs derived from patients showed crystal packing and Gal10 structure identical to those of Gal10 crystals grown in vitro. When administered to the airways, crystalline Gal10 stimulated innate and adaptive immunity and acted as a type 2 adjuvant. By contrast, a soluble Gal10 mutein was inert. Antibodies directed against key epitopes of the CLC crystallization interface dissolved preexisting CLCs in patient-derived mucus within hours and reversed crystal-driven inflammation, goblet-cell metaplasia, immunoglobulin E (IgE) synthesis, and bronchial hyperreactivity (BHR) in a humanized mouse model of asthma. Thus, protein crystals may promote hallmark features of asthma and are targetable by crystal-dissolving antibodies.
根拠: light scattering, SEC-MALLS shows that galectin-10 is a homodimer in solution.
タイプ
名称
対称操作
数
identity operation
1_555
x,y,z
1
Buried area
11790 Å2
ΔGint
-53 kcal/mol
Surface area
50550 Å2
手法
PISA
単位格子
Length a, b, c (Å)
41.326, 150.449, 94.504
Angle α, β, γ (deg.)
90.00, 96.31, 90.00
Int Tables number
4
Space group name H-M
P1211
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要素
#1: タンパク質
Galectin-10
分子量: 20628.168 Da / 分子数: 2 / 由来タイプ: 組換発現 詳細: Recombinant human galectin-10 was produced with an N-terminal cleavable His-tag (MASTTHHHHHHDTDIPTTGGGSRPDDDDKENLYFQ). Before crystallization experiments, the tag was removed by TEV protease. 由来: (組換発現) Homo sapiens (ヒト) / 発現宿主: Escherichia coli BL21(DE3) (大腸菌) / 参照: UniProt: Q05315
#2: 抗体
Fab4E8 - Heavychain
分子量: 24747.504 Da / 分子数: 2 / 由来タイプ: 組換発現 / 由来: (組換発現) Lama glama (ラマ) / 細胞株 (発現宿主): HEK293E / 発現宿主: Homo sapiens (ヒト)
#3: 抗体
Fab4E8 - Lightchain
分子量: 22635.832 Da / 分子数: 2 / 由来タイプ: 組換発現 / 由来: (組換発現) Lama glama (ラマ) / 細胞株 (発現宿主): HEK293E / 発現宿主: Homo sapiens (ヒト)
Has protein modification
Y
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実験情報
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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: 2.28 Å3/Da / 溶媒含有率: 46.04 %
結晶化
温度: 293 K / 手法: 蒸気拡散法, シッティングドロップ法 / 詳細: 0.2 M ammonium nitrate 20% PEG3350