National Institutes of Health/Eunice Kennedy Shriver National Institute of Child Health & Human Development (NIH/NICHD)
HD087988
米国
National Institutes of Health/National Institute Of Allergy and Infectious Diseases (NIH/NIAID)
AI124491
米国
Damon Runyon Cancer Research Foundation
2376-19
米国
引用
ジャーナル: Cell / 年: 2021 タイトル: NLRP3 cages revealed by full-length mouse NLRP3 structure control pathway activation. 著者: Liudmila Andreeva / Liron David / Shaun Rawson / Chen Shen / Teerithveen Pasricha / Pablo Pelegrin / Hao Wu / 要旨: The NACHT-, leucine-rich-repeat- (LRR), and pyrin domain-containing protein 3 (NLRP3) is emerging to be a critical intracellular inflammasome sensor of membrane integrity and a highly important ...The NACHT-, leucine-rich-repeat- (LRR), and pyrin domain-containing protein 3 (NLRP3) is emerging to be a critical intracellular inflammasome sensor of membrane integrity and a highly important clinical target against chronic inflammation. Here, we report that an endogenous, stimulus-responsive form of full-length mouse NLRP3 is a 12- to 16-mer double-ring cage held together by LRR-LRR interactions with the pyrin domains shielded within the assembly to avoid premature activation. Surprisingly, this NLRP3 form is predominantly membrane localized, which is consistent with previously noted localization of NLRP3 at various membrane organelles. Structure-guided mutagenesis reveals that trans-Golgi network dispersion into vesicles, an early event observed for many NLRP3-activating stimuli, requires the double-ring cages of NLRP3. Double-ring-defective NLRP3 mutants abolish inflammasome punctum formation, caspase-1 processing, and cell death. Thus, our data uncover a physiological NLRP3 oligomer on the membrane that is poised to sense diverse signals to induce inflammasome activation.
A: NACHT, LRR and PYD domains-containing protein 3 B: NACHT, LRR and PYD domains-containing protein 3 C: NACHT, LRR and PYD domains-containing protein 3 D: NACHT, LRR and PYD domains-containing protein 3 E: NACHT, LRR and PYD domains-containing protein 3 F: NACHT, LRR and PYD domains-containing protein 3 G: NACHT, LRR and PYD domains-containing protein 3 H: NACHT, LRR and PYD domains-containing protein 3 I: NACHT, LRR and PYD domains-containing protein 3 J: NACHT, LRR and PYD domains-containing protein 3 K: NACHT, LRR and PYD domains-containing protein 3 L: NACHT, LRR and PYD domains-containing protein 3
モード: BRIGHT FIELD / 倍率(公称値): 105000 X / 最大 デフォーカス(公称値): -2400 nm / 最小 デフォーカス(公称値): -800 nm / Cs: 2.7 mm / C2レンズ絞り径: 50 µm
試料ホルダ
試料ホルダーモデル: FEI TITAN KRIOS AUTOGRID HOLDER
撮影
平均露光時間: 1.51 sec. / 電子線照射量: 53.225 e/Å2 / フィルム・検出器のモデル: GATAN K3 (6k x 4k) / 実像数: 6800 詳細: Images were collected as movies with 50 frames, each recorded at multiple defocus values from -0.8 to -2.4 um and with multiple exposures per stage shift (5x4) introduced with image shift.
-
解析
ソフトウェア
名称: PHENIX / バージョン: 1.18.2_3874: / 分類: 精密化
EMソフトウェア
ID
名称
バージョン
カテゴリ
2
SerialEM
3.8.5
画像取得
4
CTFFIND
CTF補正
7
Coot
モデルフィッティング
9
PHENIX
モデル精密化
10
RELION
3.1
初期オイラー角割当
11
RELION
3.1
最終オイラー角割当
13
RELION
3.1
3次元再構成
CTF補正
タイプ: PHASE FLIPPING AND AMPLITUDE CORRECTION
対称性
点対称性: D6 (2回x6回 2面回転対称)
3次元再構成
解像度: 4.2 Å / 解像度の算出法: FSC 0.143 CUT-OFF / 粒子像の数: 122941 / 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