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基本情報
登録情報 | データベース: PDB / ID: 8u4t | |||||||||||||||||||||||||||||||||||||||||||||
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タイトル | Structure of tetrameric CXCR4 in complex with REGN7663 Fab | |||||||||||||||||||||||||||||||||||||||||||||
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![]() | SIGNALING PROTEIN/IMMUNE SYSTEM / GPCR / chemokine receptor / tetramer / oligomer / antibody / SIGNALING PROTEIN-IMMUNE SYSTEM complex | |||||||||||||||||||||||||||||||||||||||||||||
機能・相同性 | ![]() C-X-C motif chemokine 12 receptor activity / positive regulation of macrophage migration inhibitory factor signaling pathway / Specification of primordial germ cells / CXCL12-activated CXCR4 signaling pathway / myosin light chain binding / myelin maintenance / C-X-C chemokine receptor activity / positive regulation of vasculature development / Signaling by ROBO receptors / regulation of chemotaxis ...C-X-C motif chemokine 12 receptor activity / positive regulation of macrophage migration inhibitory factor signaling pathway / Specification of primordial germ cells / CXCL12-activated CXCR4 signaling pathway / myosin light chain binding / myelin maintenance / C-X-C chemokine receptor activity / positive regulation of vasculature development / Signaling by ROBO receptors / regulation of chemotaxis / Formation of definitive endoderm / C-C chemokine receptor activity / C-C chemokine binding / Developmental Lineage of Pancreatic Acinar Cells / Chemokine receptors bind chemokines / anchoring junction / dendritic cell chemotaxis / cellular response to cytokine stimulus / cell leading edge / positive regulation of oligodendrocyte differentiation / Binding and entry of HIV virion / regulation of cell adhesion / coreceptor activity / neurogenesis / ubiquitin binding / cell chemotaxis / calcium-mediated signaling / G protein-coupled receptor activity / brain development / response to virus / late endosome / positive regulation of cold-induced thermogenesis / actin binding / positive regulation of cytosolic calcium ion concentration / virus receptor activity / cytoplasmic vesicle / G alpha (i) signalling events / early endosome / response to hypoxia / lysosome / immune response / positive regulation of cell migration / G protein-coupled receptor signaling pathway / inflammatory response / external side of plasma membrane / ubiquitin protein ligase binding / apoptotic process / cell surface / protein-containing complex / extracellular exosome / plasma membrane / cytoplasm 類似検索 - 分子機能 | |||||||||||||||||||||||||||||||||||||||||||||
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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: 3.38 Å | |||||||||||||||||||||||||||||||||||||||||||||
![]() | Saotome, K. / McGoldrick, L.L. / Franklin, M.C. | |||||||||||||||||||||||||||||||||||||||||||||
資金援助 | ![]()
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![]() | ![]() タイトル: Structural insights into CXCR4 modulation and oligomerization. 著者: Kei Saotome / Luke L McGoldrick / Jo-Hao Ho / Trudy F Ramlall / Sweta Shah / Michael J Moore / Jee Hae Kim / Raymond Leidich / William C Olson / Matthew C Franklin / ![]() 要旨: Activation of the chemokine receptor CXCR4 by its chemokine ligand CXCL12 regulates diverse cellular processes. Previously reported crystal structures of CXCR4 revealed the architecture of an ...Activation of the chemokine receptor CXCR4 by its chemokine ligand CXCL12 regulates diverse cellular processes. Previously reported crystal structures of CXCR4 revealed the architecture of an inactive, homodimeric receptor. However, many structural aspects of CXCR4 remain poorly understood. Here, we use cryo-electron microscopy to investigate various modes of human CXCR4 regulation. CXCL12 activates CXCR4 by inserting its N terminus deep into the CXCR4 orthosteric pocket. The binding of US Food and Drug Administration-approved antagonist AMD3100 is stabilized by electrostatic interactions with acidic residues in the seven-transmembrane-helix bundle. A potent antibody blocker, REGN7663, binds across the extracellular face of CXCR4 and inserts its complementarity-determining region H3 loop into the orthosteric pocket. Trimeric and tetrameric structures of CXCR4 reveal modes of G-protein-coupled receptor oligomerization. We show that CXCR4 adopts distinct subunit conformations in trimeric and tetrameric assemblies, highlighting how oligomerization could allosterically regulate chemokine receptor function. #1: ![]() タイトル: Structural insights into CXCR4 modulation and oligomerization 著者: Saotome, K. / McGoldrick, L.L. / Ho, J. / Ramlall, T. / Shah, S. / Moore, M.J. / Kim, J.H. / Leidich, R. / Olson, W.C. / Franklin, M.C. | |||||||||||||||||||||||||||||||||||||||||||||
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-関連構造データ
関連構造データ | ![]() 41894MC ![]() 8u4nC ![]() 8u4oC ![]() 8u4pC ![]() 8u4qC ![]() 8u4rC ![]() 8u4sC 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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非結晶学的対称性 (NCS) | NCSドメイン:
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