- EMDB-51087: Cryo-EM structure of a 2:1 ALK:ALKAL2 complex obtained after re-p... -
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基本情報
登録情報
データベース: EMDB / ID: EMD-51087
タイトル
Cryo-EM structure of a 2:1 ALK:ALKAL2 complex obtained after re-processing of EMPIAR-10930 data
マップデータ
Regularly sharpened map of the 2:1 ALK-ALKAL2 complex, obtained after re-processing of EMPIAR-10930 data.
試料
複合体: Cryo-EM structure of a 2:1 ALK:ALKAL2 complex obtained after re-processing of EMPIAR-10930 data
タンパク質・ペプチド: ALK tyrosine kinase receptor
タンパク質・ペプチド: ALK and LTK ligand 2
キーワード
Complex / receptor tyrosine kinase / CYTOKINE
機能・相同性
機能・相同性情報
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 / Signaling by ALK / response to stress / adult behavior / energy homeostasis / peptidyl-tyrosine autophosphorylation / neuron development / negative regulation of lipid catabolic process / transmembrane receptor protein tyrosine kinase activity / cell surface receptor protein tyrosine kinase signaling pathway / hippocampus development / cytokine activity / positive regulation of NF-kappaB transcription factor activity / receptor protein-tyrosine kinase / receptor tyrosine kinase binding / positive regulation of neuron projection development / 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
ALK and LTK ligand 1/2 / ALK and LTK ligand 1/2 / : / ALK/LTK, Glycine-rich domain / MAM domain, meprin/A5/mu / MAM domain / MAM domain profile. / Tyrosine-protein kinase, receptor class II, conserved site / Receptor tyrosine kinase class II signature. / Low-density lipoprotein receptor domain class A ...ALK and LTK ligand 1/2 / ALK and LTK ligand 1/2 / : / ALK/LTK, Glycine-rich domain / MAM domain, meprin/A5/mu / MAM domain / MAM domain profile. / Tyrosine-protein kinase, receptor class II, conserved site / Receptor tyrosine kinase class II signature. / Low-density lipoprotein receptor domain class A / Low-density lipoprotein (LDL) receptor class A repeat / LDL receptor-like superfamily / : / Tyrosine-protein kinase, catalytic domain / Tyrosine kinase, catalytic domain / Tyrosine protein kinases specific active-site signature. / Tyrosine-protein kinase, active site / Concanavalin A-like lectin/glucanase domain superfamily / Serine-threonine/tyrosine-protein kinase, catalytic domain / Protein tyrosine and serine/threonine kinase / Protein kinase, ATP binding site / Protein kinases ATP-binding region signature. / Protein kinase domain profile. / Protein kinase domain / Protein kinase-like domain superfamily 類似検索 - ドメイン・相同性
Flanders Institute for Biotechnology (VIB) grant number C0101
ベルギー
引用
ジャーナル: PLoS Biol / 年: 2025 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.
全体 : Cryo-EM structure of a 2:1 ALK:ALKAL2 complex obtained after re-p...
全体
名称: Cryo-EM structure of a 2:1 ALK:ALKAL2 complex obtained after re-processing of EMPIAR-10930 data
要素
複合体: Cryo-EM structure of a 2:1 ALK:ALKAL2 complex obtained after re-processing of EMPIAR-10930 data
タンパク質・ペプチド: ALK tyrosine kinase receptor
タンパク質・ペプチド: ALK and LTK ligand 2
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超分子 #1: Cryo-EM structure of a 2:1 ALK:ALKAL2 complex obtained after re-p...
超分子
名称: Cryo-EM structure of a 2:1 ALK:ALKAL2 complex obtained after re-processing of EMPIAR-10930 data タイプ: complex / ID: 1 / 親要素: 0 / 含まれる分子: all 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.
モデルのタイプ: OTHER / 詳細: cryoSPARC Ab-Initio Reconstruction.
最終 再構成
想定した対称性 - 点群: C1 (非対称) / 解像度のタイプ: BY AUTHOR / 解像度: 3.2 Å / 解像度の算出法: FSC 0.143 CUT-OFF / ソフトウェア - 名称: RELION (ver. 5) 詳細: Final 3D refinement was performed in Relion v5 with enabled Blush Regularization. 使用した粒子像数: 142986