columnar/cuboidal epithelial cell development / regulation of phosphate transport / regulation of TOR signaling / regulation of ERK1 and ERK2 cascade / transmembrane receptor protein tyrosine kinase activity / cell surface receptor protein tyrosine kinase signaling pathway / regulation of cell growth / receptor protein-tyrosine kinase / protein tyrosine kinase activity / protein phosphatase binding ...columnar/cuboidal epithelial cell development / regulation of phosphate transport / regulation of TOR signaling / regulation of ERK1 and ERK2 cascade / transmembrane receptor protein tyrosine kinase activity / cell surface receptor protein tyrosine kinase signaling pathway / regulation of cell growth / receptor protein-tyrosine kinase / protein tyrosine kinase activity / protein phosphatase binding / spermatogenesis / gene expression / protein phosphorylation / cell differentiation / signaling receptor complex / negative regulation of gene expression / perinuclear region of cytoplasm / cell surface / signal transduction / ATP binding / plasma membrane 類似検索 - 分子機能
LDLR class B repeat / Low-density lipoprotein-receptor YWTD domain / Six-bladed beta-propeller, TolB-like / Fibronectin type III domain / : / Fibronectin type 3 domain / Fibronectin type-III domain profile. / Fibronectin type III / Fibronectin type III superfamily / Tyrosine-protein kinase, catalytic domain ...LDLR class B repeat / Low-density lipoprotein-receptor YWTD domain / Six-bladed beta-propeller, TolB-like / Fibronectin type III domain / : / Fibronectin type 3 domain / Fibronectin type-III domain profile. / Fibronectin type III / Fibronectin type III superfamily / Tyrosine-protein kinase, catalytic domain / Tyrosine kinase, catalytic domain / Tyrosine protein kinases specific active-site signature. / Tyrosine-protein kinase, active site / Protein tyrosine and serine/threonine kinase / Serine-threonine/tyrosine-protein kinase, catalytic domain / Protein kinase, ATP binding site / Protein kinases ATP-binding region signature. / Immunoglobulin-like fold / Protein kinase domain profile. / Protein kinase domain / Protein kinase-like domain superfamily 類似検索 - ドメイン・相同性
National Institutes of Health/National Cancer Institute (NIH/NCI)
米国
引用
ジャーナル: Nat Commun / 年: 2026 タイトル: Clustering and a conformational switch drive activation of the mammalian receptor tyrosine kinase ROS1. 著者: Hengyi Li / Jianan Zhang / Tongqing Li / Yueyue Wang / Claudio R Alarcón / Daryl E Klein / 要旨: Receptor tyrosine kinases (RTKs) are key regulators of cellular signaling and are often co-opted in cancer. ROS1 is an orphan RTK aberrantly expressed in multiple tumors, yet no approved biologic ...Receptor tyrosine kinases (RTKs) are key regulators of cellular signaling and are often co-opted in cancer. ROS1 is an orphan RTK aberrantly expressed in multiple tumors, yet no approved biologic therapies target it, and its activation mechanism remains unknown. Here, we present Cryo-EM structures of mammalian ROS1 in ligand-free and NELL2-bound states, revealing how trimeric NELL2 induces both receptor clustering and a conformational switch that relieves receptor autoinhibition - both mechanisms are required for ROS1 activation. These structures, along with biochemical characterization, reflect a striking evolutionary divergence in regulatory logic compared to the invertebrate ortholog Sevenless (dROS1), highlighting how conserved RTKs can adopt fundamentally different activation strategies. Guided by these structural insights, we develop monoclonal antibodies that either block ligand binding or trap ROS1 in an inactive conformation. These agents potently suppress ROS1 signaling, representing distinct mechanistic classes of biologics that directly target ROS1 activity. Our findings elucidate a distinct mode of RTK regulation and establish a therapeutic framework for cancers driven by ROS1.