登録情報 データベース : EMDB / ID : EMD-48220 ダウンロードとリンクタイトル CXCR4 tetramer bound to 4 CXCL12 dimers マップデータcryoEM density map of CXCR4-CXCL12 with 1:2 詳細 試料複合体 : CXCR4 tetramer with 4 CXCL12 dimersタンパク質・ペプチド : C-X-C chemokine receptor type 4タンパク質・ペプチド : Stromal cell-derived factor 1 詳細 キーワード CXCR4 / CXCL12 / SIGNALING PROTEIN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
telencephalon cell migration / chemokine (C-X-C motif) ligand 12 signaling pathway / C-X-C motif chemokine 12 receptor activity / response to ultrasound / negative regulation of leukocyte tethering or rolling / regulation of actin polymerization or depolymerization / positive regulation of macrophage migration inhibitory factor signaling pathway / myosin light chain binding / CXCL12-activated CXCR4 signaling pathway / Specification of primordial germ cells ... telencephalon cell migration / chemokine (C-X-C motif) ligand 12 signaling pathway / C-X-C motif chemokine 12 receptor activity / response to ultrasound / negative regulation of leukocyte tethering or rolling / regulation of actin polymerization or depolymerization / positive regulation of macrophage migration inhibitory factor signaling pathway / myosin light chain binding / CXCL12-activated CXCR4 signaling pathway / Specification of primordial germ cells / chemokine receptor binding / myelin maintenance / CXCR chemokine receptor binding / positive regulation of axon extension involved in axon guidance / C-X-C chemokine receptor activity / Developmental Lineage of Multipotent Pancreatic Progenitor Cells / positive regulation of vasculature development / Signaling by ROBO receptors / induction of positive chemotaxis / negative regulation of dendritic cell apoptotic process / Formation of definitive endoderm / integrin activation / positive regulation of dopamine secretion / negative regulation of intrinsic apoptotic signaling pathway in response to DNA damage / cellular response to chemokine / C-C chemokine receptor activity / C-C chemokine binding / positive regulation of monocyte chemotaxis / anchoring junction / chemokine activity / blood circulation / Chemokine receptors bind chemokines / dendritic cell chemotaxis / positive regulation of calcium ion import / cellular response to cytokine stimulus / detection of temperature stimulus involved in sensory perception of pain / cell leading edge / positive regulation of oligodendrocyte differentiation / animal organ regeneration / Binding and entry of HIV virion / detection of mechanical stimulus involved in sensory perception of pain / positive regulation of T cell migration / Nuclear signaling by ERBB4 / regulation of cell adhesion / coreceptor activity / positive regulation of endothelial cell proliferation / positive regulation of neuron differentiation / neurogenesis / positive regulation of cell adhesion / axon guidance / chemokine-mediated signaling pathway / adult locomotory behavior / growth factor activity / cell chemotaxis / ubiquitin binding / calcium-mediated signaling / defense response / brain development / response to peptide hormone / integrin binding / G protein-coupled receptor activity / response to virus / neuron migration / chemotaxis / adenylate cyclase-inhibiting G protein-coupled receptor signaling pathway / intracellular calcium ion homeostasis / late endosome / positive regulation of cold-induced thermogenesis / virus receptor activity / positive regulation of cytosolic calcium ion concentration / extracellular matrix / actin binding / cytoplasmic vesicle / Estrogen-dependent gene expression / G alpha (i) signalling events / response to hypoxia / early endosome / lysosome / cell adhesion / immune response / positive regulation of cell migration / G protein-coupled receptor signaling pathway / inflammatory response / signaling receptor binding / external side of plasma membrane / apoptotic process / ubiquitin protein ligase binding / cell surface / signal transduction / protein-containing complex / : / extracellular exosome / extracellular region / membrane / plasma membrane / cytoplasm 類似検索 - 分子機能 CXC chemokine receptor 4 N-terminal domain / CXCR4 Chemokine receptor N terminal / CXC chemokine receptor 4/atypical chemokine receptor 2 / CXC Chemokine domain / Chemokine receptor family / Chemokine beta/gamma/delta / Intercrine alpha family (small cytokine C-X-C) (chemokine CXC). / Chemokine interleukin-8-like domain / Chemokine interleukin-8-like superfamily / Small cytokines (intecrine/chemokine), interleukin-8 like ... CXC chemokine receptor 4 N-terminal domain / CXCR4 Chemokine receptor N terminal / CXC chemokine receptor 4/atypical chemokine receptor 2 / CXC Chemokine domain / Chemokine receptor family / Chemokine beta/gamma/delta / Intercrine alpha family (small cytokine C-X-C) (chemokine CXC). / Chemokine interleukin-8-like domain / Chemokine interleukin-8-like superfamily / Small cytokines (intecrine/chemokine), interleukin-8 like / : / G-protein coupled receptors family 1 signature. / 7 transmembrane receptor (rhodopsin family) / G protein-coupled receptor, rhodopsin-like / GPCR, rhodopsin-like, 7TM / G-protein coupled receptors family 1 profile. 類似検索 - ドメイン・相同性 Stromal cell-derived factor 1 / C-X-C chemokine receptor type 4 類似検索 - 構成要素生物種 Homo sapiens (ヒト)手法 単粒子再構成法 / クライオ電子顕微鏡法 / 解像度 : 3.46 Å 詳細 データ登録者Zhang Z / Patel DJ 資金援助 米国, 1件 詳細 詳細を隠すOrganization Grant number 国 National Institutes of Health/National Cancer Institute (NIH/NCI) P30 CA008748 米国
引用ジャーナル : Nat Commun / 年 : 2025タイトル : CXCR4 mediated recognition of HIV envelope spike and inhibition by CXCL12.著者 : Zhiying Zhang / Hongwei Zhang / Lyuqin Zheng / Shihua Chen / Shuo Du / Junyu Xiao / Dinshaw J Patel / 要旨 : CCR5 and CXCR4 both act as HIV co-receptors, though CXCR4 is less explored. CXCR4 binds the chemokine CXCL12 to regulate cellular processes and mediate HIV entry, a process that CXCL12 inhibits. ... CCR5 and CXCR4 both act as HIV co-receptors, though CXCR4 is less explored. CXCR4 binds the chemokine CXCL12 to regulate cellular processes and mediate HIV entry, a process that CXCL12 inhibits. Using cryo-EM, we investigate HIV-2 envelope (Env) spike recognition by CXCR4 and how CXCL12 inhibit this interaction. We discover that CXCR4 unexpected forms a tetramer, both alone and in complex. It binds CXCL12 with 4:8 and 8:8 stoichiometries, with the CXCL12 N-terminus inserting into the CXCR4 pocket. Structures of CXCR4-gp120 complex show one or two gp120 molecules per CXCR4 tetramer, with the V3 loop occupying the major sub-pocket of CXCR4 through deep embedment of its GFKF motif. The CXCL12 N-terminus chashes with gp120 V3 loops, explain its inhibitory effect. Docking analyses of other HIV antagonists further clarify their mechanisms. The CXCR4-gp120 model illustrate how V3 loop residues define co-receptor specificity, offering insights into co-receptor switching and therapeutic design. 履歴 登録 2024年12月8日 - ヘッダ(付随情報) 公開 2025年9月10日 - マップ公開 2025年9月10日 - 更新 2026年3月25日 - 現状 2026年3月25日 処理サイト : RCSB / 状態 : 公開
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