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基本情報
登録情報 | データベース: PDB / ID: 9g5i | ||||||||||||||||||||||||||||||
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タイトル | Cryo-EM structure of a 2:1 ALK:ALKAL2 complex obtained after re-processing of EMPIAR-10930 data | ||||||||||||||||||||||||||||||
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![]() | CYTOKINE / Complex / receptor tyrosine kinase | ||||||||||||||||||||||||||||||
機能・相同性 | ![]() positive regulation of ERK5 cascade / ASP-3026-resistant ALK mutants / NVP-TAE684-resistant ALK mutants / alectinib-resistant ALK mutants / brigatinib-resistant ALK mutants / ceritinib-resistant ALK mutants / crizotinib-resistant ALK mutants / lorlatinib-resistant ALK mutants / MDK and PTN in ALK signaling / receptor signaling protein tyrosine kinase activator activity ...positive regulation of ERK5 cascade / ASP-3026-resistant ALK mutants / NVP-TAE684-resistant ALK mutants / alectinib-resistant ALK mutants / brigatinib-resistant ALK mutants / ceritinib-resistant ALK mutants / crizotinib-resistant ALK mutants / lorlatinib-resistant ALK mutants / MDK and PTN in ALK signaling / receptor signaling protein tyrosine kinase activator activity / regulation of dopamine receptor signaling pathway / response to environmental enrichment / ALK mutants bind TKIs / transmembrane receptor protein tyrosine kinase activator activity / swimming behavior / phosphorylation / Signaling by LTK / positive regulation of dendrite development / regulation of neuron differentiation / peptidyl-tyrosine autophosphorylation / Signaling by ALK / response to stress / adult behavior / energy homeostasis / neuron development / negative regulation of lipid catabolic process / transmembrane receptor protein tyrosine kinase activity / cell surface receptor protein tyrosine kinase signaling pathway / cytokine activity / hippocampus development / positive regulation of NF-kappaB transcription factor activity / receptor protein-tyrosine kinase / positive regulation of neuron projection development / receptor tyrosine kinase binding / Signaling by ALK fusions and activated point mutants / heparin binding / regulation of cell population proliferation / protein autophosphorylation / protein tyrosine kinase activity / regulation of apoptotic process / positive regulation of ERK1 and ERK2 cascade / receptor complex / signal transduction / protein-containing complex / extracellular space / extracellular exosome / extracellular region / ATP binding / identical protein binding / plasma membrane 類似検索 - 分子機能 | ||||||||||||||||||||||||||||||
生物種 | ![]() | ||||||||||||||||||||||||||||||
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: 3.2 Å | ||||||||||||||||||||||||||||||
![]() | Felix, J. / De Munck, S. / Bazan, J.F. / Savvides, S.N. | ||||||||||||||||||||||||||||||
資金援助 | ![]()
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![]() | ![]() タイトル: Reanalysis of cryo-EM data reveals ALK-cytokine assemblies with both 2:1 and 2:2 stoichiometries. 著者: Jan Felix / Steven De Munck / J Fernando Bazan / Savvas N Savvides / ![]() ![]() 要旨: Activation of Anaplastic lymphoma kinase (ALK) and leukocyte tyrosine kinase (LTK) by their cognate cytokines ALKAL2 and ALKAL1 plays important roles in development, metabolism, and cancer. Recent ...Activation of Anaplastic lymphoma kinase (ALK) and leukocyte tyrosine kinase (LTK) by their cognate cytokines ALKAL2 and ALKAL1 plays important roles in development, metabolism, and cancer. Recent structural studies revealed ALK/LTK-cytokine assemblies with distinct stoichiometries. Structures of ALK-ALKAL2 and LTK-ALKAL1 complexes with 2:1 stoichiometry determined by X-ray crystallography contrasted the 2:2 ALK-ALKAL2 complexes determined by cryo-EM and X-ray crystallography. Here, we show based on reanalysis of the cryo-EM data deposited in EMPIAR-10930 that over half of the ALK-ALKAL2 particles in the dataset are classified into 2D and 3D classes obeying a 2:1 stoichiometry besides the originally reported structure displaying 2:2 stoichiometry. Unlike particles representing the 2:2 ALK-ALKAL2 complex, particles for the 2:1 ALK-ALKAL2 complex suffer severely from preferred orientations that resulted in cryo-EM maps displaying strong anisotropy. Here, we show that extensive particle orientation rebalancing in cryoSPARC followed by 3D refinement with Blush regularization in RELION constitutes an effective strategy for avoiding map artifacts relating to preferred particle orientations and report a 3D reconstruction of the 2:1 ALK-ALKAL2 complex to 3.2 Å resolution from EMPIAR-10930. This new cryo-EM structure together with the crystal structures of ALK-ALKAL2 and LTK-ALKAL1 complexes with 2:1 stoichiometry reconciles a common receptor dimerization mode for ALK and LTK and provides direct evidence for the presence of an ALK-ALKAL2 complex with 2:1 stoichiometry next to the reported 2:2 stoichiometric assembly in the EMPIAR-10930 dataset. Finally, our analysis emphasizes the importance of public deposition of raw cryo-EM data to allow reanalysis and interpretation. | ||||||||||||||||||||||||||||||
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構造の表示
構造ビューア | 分子: ![]() ![]() |
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-検証レポート
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-関連構造データ
関連構造データ | ![]() 51087MC M: このデータのモデリングに利用したマップデータ C: 同じ文献を引用 ( |
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類似構造データ | 類似検索 - 機能・相同性 ![]() |
実験データセット #1 | データ参照: ![]() |
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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: 39377.559 Da / 分子数: 2 / 由来タイプ: 組換発現 / 由来: (組換発現) ![]() ![]() ![]() #2: タンパク質 | | 分子量: 14640.013 Da / 分子数: 1 / 由来タイプ: 組換発現 / 由来: (組換発現) ![]() ![]() ![]() Has protein modification | Y | |
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-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: Cryo-EM structure of a 2:1 ALK:ALKAL2 complex obtained after re-processing of EMPIAR-10930 data タイプ: COMPLEX 詳細: Sample preparation and data collection was performed by Reshetnyak et al. (Nature, 2021, https://doi.org/10.1038/s41586-021-04140-8). Motion corrected micrographs and an uncleaned particle ...詳細: Sample preparation and data collection was performed by Reshetnyak et al. (Nature, 2021, https://doi.org/10.1038/s41586-021-04140-8). Motion corrected micrographs and an uncleaned particle stack containing 18,053,750 particles were downloaded from EMPIAR entry 10930. All subsequent data processing, refinement en model building was performed by Jan Felix with help from Steven De Munck and Savvas Savvides. Entity ID: all / 由来: RECOMBINANT | ||||||||||||||||
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分子量 | 値: 0.086 MDa / 実験値: YES | ||||||||||||||||
由来(天然) | 生物種: ![]() | ||||||||||||||||
由来(組換発現) | 生物種: ![]() ![]() | ||||||||||||||||
緩衝液 | pH: 7.4 | ||||||||||||||||
緩衝液成分 |
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試料 | 濃度: 1 mg/ml / 包埋: NO / シャドウイング: NO / 染色: NO / 凍結: YES | ||||||||||||||||
試料支持 | グリッドの材料: GOLD / グリッドのサイズ: 300 divisions/in. / グリッドのタイプ: Quantifoil R1.2/1.3 | ||||||||||||||||
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: 283.15 K 詳細: QUANTIFOIL R1.2/1/3 gold 300 mesh grids without glow-discharge, blotting time 3 sec., blotting force -5. |
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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 / 詳細: SerialEM coma-free alignment |
電子銃 | 電子線源: ![]() |
電子レンズ | モード: BRIGHT FIELD / 倍率(公称値): 105000 X / 最大 デフォーカス(公称値): 1500 nm / 最小 デフォーカス(公称値): 500 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 最高温度: 98 K / 最低温度: 96 K |
撮影 | 平均露光時間: 4.2 sec. / 電子線照射量: 81 e/Å2 / フィルム・検出器のモデル: GATAN K3 (6k x 4k) / 撮影したグリッド数: 1 / 実像数: 13618 |
電子光学装置 | エネルギーフィルター名称: GIF Bioquantum / エネルギーフィルタースリット幅: 20 eV |
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解析
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: 18053705 | ||||||||||||||||||||||||||||||||||||||||||||||||||
対称性 | 点対称性: C1 (非対称) | ||||||||||||||||||||||||||||||||||||||||||||||||||
3次元再構成 | 解像度: 3.2 Å / 解像度の算出法: FSC 0.143 CUT-OFF / 粒子像の数: 142986 詳細: Final 3D refinement was performed in Relion v5 with enabled Blush Regularization. 対称性のタイプ: POINT | ||||||||||||||||||||||||||||||||||||||||||||||||||
原子モデル構築 | プロトコル: OTHER / 空間: REAL 詳細: Rigid-body fitting in Chimera was followed by manual building in Coot and refinement using Phenix real-space refine and Refmac-Servalcat. | ||||||||||||||||||||||||||||||||||||||||||||||||||
原子モデル構築 | PDB-ID: 7N00 Accession code: 7N00 / Source name: PDB / タイプ: experimental model |