登録情報 データベース : PDB / ID : 8w9a 構造の表示 ダウンロードとリンクタイトル CryoEM structure of human PI3K-alpha (P85/P110-H1047R) with QR-7909 binding at an allosteric site 要素Phosphatidylinositol 3-kinase regulatory subunit alpha Phosphatidylinositol 4,5-bisphosphate 3-kinase catalytic subunit alpha isoform 詳細キーワード ONCOPROTEIN (がん遺伝子) / PI3K-alpha / lipid kinase (キナーゼ) / allosteric inhibition (アロステリック効果)機能・相同性 機能・相同性情報分子機能 ドメイン・相同性 構成要素
perinuclear endoplasmic reticulum membrane / response to muscle inactivity / negative regulation of actin filament depolymerization / regulation of toll-like receptor 4 signaling pathway / response to L-leucine / phosphatidylinositol kinase activity / regulation of actin filament organization / phosphatidylinositol 3-kinase regulator activity / response to butyrate / positive regulation of focal adhesion disassembly ... perinuclear endoplasmic reticulum membrane / response to muscle inactivity / negative regulation of actin filament depolymerization / regulation of toll-like receptor 4 signaling pathway / response to L-leucine / phosphatidylinositol kinase activity / regulation of actin filament organization / phosphatidylinositol 3-kinase regulator activity / response to butyrate / positive regulation of focal adhesion disassembly / autosome genomic imprinting / IRS-mediated signalling / cellular response to hydrostatic pressure / phosphatidylinositol 3-kinase activator activity / interleukin-18-mediated signaling pathway / PI3K events in ERBB4 signaling / myeloid leukocyte migration / 1-phosphatidylinositol-3-kinase regulator activity / phosphatidylinositol 3-kinase regulatory subunit binding / neurotrophin TRKA receptor binding / Activated NTRK2 signals through PI3K / positive regulation of protein localization to membrane / cis-Golgi network / Activated NTRK3 signals through PI3K / ErbB-3 class receptor binding / negative regulation of fibroblast apoptotic process / RHOF GTPase cycle / kinase activator activity / cardiac muscle cell contraction / phosphatidylinositol 3-kinase complex, class IB / vasculature development / transmembrane receptor protein tyrosine kinase adaptor activity / RHOD GTPase cycle / Signaling by cytosolic FGFR1 fusion mutants / regulation of cellular respiration / positive regulation of endoplasmic reticulum unfolded protein response / enzyme-substrate adaptor activity / phosphatidylinositol 3-kinase complex, class IA / anoikis / phosphatidylinositol 3-kinase complex / Nephrin family interactions / RND1 GTPase cycle / Costimulation by the CD28 family / relaxation of cardiac muscle / 1-phosphatidylinositol-4-phosphate 3-kinase activity / 1-phosphatidylinositol-4,5-bisphosphate 3-kinase activity / RND2 GTPase cycle / MET activates PI3K/AKT signaling / PI3K/AKT activation / RND3 GTPase cycle / positive regulation of leukocyte migration / positive regulation of filopodium assembly / phosphatidylinositol-4,5-bisphosphate 3-kinase / vascular endothelial growth factor signaling pathway / negative regulation of stress fiber assembly / PI3キナーゼ / growth hormone receptor signaling pathway / insulin binding / phosphatidylinositol-3-phosphate biosynthetic process / RHOV GTPase cycle / negative regulation of macroautophagy / 1-phosphatidylinositol-3-kinase activity / RHOB GTPase cycle / negative regulation of cell-matrix adhesion / Signaling by ALK / GP1b-IX-V activation signalling / PI-3K cascade:FGFR3 / Erythropoietin activates Phosphoinositide-3-kinase (PI3K) / protein kinase activator activity / response to dexamethasone / PI-3K cascade:FGFR2 / RHOJ GTPase cycle / PI-3K cascade:FGFR4 / RHOC GTPase cycle / PI-3K cascade:FGFR1 / negative regulation of osteoclast differentiation / intracellular glucose homeostasis / phosphatidylinositol-mediated signaling / phosphatidylinositol phosphate biosynthetic process / CD28 dependent PI3K/Akt signaling / Synthesis of PIPs at the plasma membrane / CDC42 GTPase cycle / RHOU GTPase cycle / PI3K events in ERBB2 signaling / negative regulation of anoikis / RHOG GTPase cycle / 介在板 / T cell differentiation / RET signaling / regulation of multicellular organism growth / extrinsic apoptotic signaling pathway via death domain receptors / insulin receptor substrate binding / Interleukin-3, Interleukin-5 and GM-CSF signaling / PI3K Cascade / RHOA GTPase cycle / positive regulation of TOR signaling / endothelial cell migration / RAC2 GTPase cycle / RAC3 GTPase cycle / Role of phospholipids in phagocytosis 類似検索 - 分子機能 PI3Kalpha, catalytic domain / Phosphatidylinositol 3-kinase regulatory subunit alpha, SH3 domain / PIK3R1, inter-SH2 domain / PI3K p85 subunit, C-terminal SH2 domain / PI3K regulatory subunit p85-related , inter-SH2 domain / PI3K p85 subunit, N-terminal SH2 domain / Phosphatidylinositol 3-kinase regulatory subunit P85 inter-SH2 domain / PI3-kinase family, p85-binding domain / PI3-kinase family, p85-binding domain / Rho GTPase-activating protein domain ... PI3Kalpha, catalytic domain / Phosphatidylinositol 3-kinase regulatory subunit alpha, SH3 domain / PIK3R1, inter-SH2 domain / PI3K p85 subunit, C-terminal SH2 domain / PI3K regulatory subunit p85-related , inter-SH2 domain / PI3K p85 subunit, N-terminal SH2 domain / Phosphatidylinositol 3-kinase regulatory subunit P85 inter-SH2 domain / PI3-kinase family, p85-binding domain / PI3-kinase family, p85-binding domain / Rho GTPase-activating protein domain / RhoGAP domain / Rho GTPase-activating proteins domain profile. / GTPase-activator protein for Rho-like GTPases / Phosphatidylinositol 3-kinase, adaptor-binding domain / Phosphatidylinositol 3-kinase adaptor-binding (PI3K ABD) domain profile. / PI3-kinase family, Ras-binding domain / Phosphatidylinositol 3-kinase Ras-binding (PI3K RBD) domain / PI3-kinase family, ras-binding domain / Phosphatidylinositol 3-kinase Ras-binding (PI3K RBD) domain profile. / Phosphoinositide 3-kinase C2 / Phosphoinositide 3-kinase, region postulated to contain C2 domain / C2 phosphatidylinositol 3-kinase-type domain / C2 phosphatidylinositol 3-kinase (PI3K)-type domain profile. / Phosphoinositide 3-kinase, accessory (PIK) domain superfamily / Phosphoinositide 3-kinase family, accessory domain (PIK domain) / Phosphoinositide 3-kinase family, accessory domain (PIK domain) / Rho GTPase activation protein / Phosphoinositide 3-kinase, accessory (PIK) domain / Phosphatidylinositol kinase / PIK helical domain profile. / Phosphatidylinositol 3- and 4-kinases signature 1. / Phosphatidylinositol 3/4-kinase, conserved site / Phosphatidylinositol 3- and 4-kinases signature 2. / Phosphatidylinositol 3-/4-kinase, catalytic domain superfamily / Phosphoinositide 3-kinase, catalytic domain / Phosphatidylinositol 3- and 4-kinase / Phosphatidylinositol 3- and 4-kinases catalytic domain profile. / Phosphatidylinositol 3-/4-kinase, catalytic domain / C2 domain superfamily / SH2ドメイン / Src homology 2 (SH2) domain profile. / Src homology 2 domains / SH2ドメイン / Src homology 3 domains / SH2 domain superfamily / SH3-like domain superfamily / Src homology 3 (SH3) domain profile. / SH3ドメイン / Armadillo-type fold / Ubiquitin-like domain superfamily / Protein kinase-like domain superfamily 類似検索 - ドメイン・相同性 : / Phosphatidylinositol 3-kinase regulatory subunit alpha / Phosphatidylinositol 4,5-bisphosphate 3-kinase catalytic subunit alpha isoform 類似検索 - 構成要素生物種 Homo sapiens (ヒト)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 : 2.7 Å 詳細データ登録者 Huang, X. / Ren, X. / Zhong, W. 資金援助 1件 詳細 詳細を隠す 引用ジャーナル : Structure / 年 : 2024タイトル : Cryo-EM structures reveal two allosteric inhibition modes of PI3Kα involving a re-shaping of the activation loop.著者 : Xiuliang Huang / Kailiang Wang / Jing Han / Xiumei Chen / Zhenglin Wang / Tianlun Wu / Bo Yu / Feng Zhao / Xinjuan Wang / Huijuan Li / Zhi Xie / Xiaotian Zhu / Wenge Zhong / Xiaoming Ren / 要旨 : PI3Kα is a lipid kinase that phosphorylates PIP2 and generates PIP3. The hyperactive PI3Kα mutation, H1047R, accounts for about 14% of breast cancer, making it a highly attractive target for drug ... PI3Kα is a lipid kinase that phosphorylates PIP2 and generates PIP3. The hyperactive PI3Kα mutation, H1047R, accounts for about 14% of breast cancer, making it a highly attractive target for drug discovery. Here, we report the cryo-EM structures of PI3Kα bound to two different allosteric inhibitors QR-7909 and QR-8557 at a global resolution of 2.7 Å and 3.0 Å, respectively. The structures reveal two distinct binding pockets on the opposite sides of the activation loop. Structural and MD simulation analyses show that the allosteric binding of QR-7909 and QR-8557 inhibit PI3Kα hyper-activity by reducing the fluctuation and mobility of the activation loop. Our work provides a strong rational basis for a further optimization and development of highly selective drug candidates to treat PI3Kα-driven cancers. 履歴 登録 2023年9月5日 登録サイト : PDBJ / 処理サイト : PDBC改定 1.0 2024年4月17日 Provider : repository / タイプ : Initial release改定 1.1 2024年5月8日 Group : Source and taxonomyカテゴリ : em_entity_assembly_recombinant / entity_src_genItem : _em_entity_assembly_recombinant.ncbi_tax_id / _em_entity_assembly_recombinant.organism ... _em_entity_assembly_recombinant.ncbi_tax_id / _em_entity_assembly_recombinant.organism / _entity_src_gen.pdbx_host_org_ncbi_taxonomy_id / _entity_src_gen.pdbx_host_org_scientific_name
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