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基本情報
登録情報 | データベース: PDB / ID: 7xbx | ||||||||||||
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タイトル | Cryo-EM structure of the human chemokine receptor CX3CR1 in complex with CX3CL1 and Gi1 | ||||||||||||
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![]() | SIGNALING PROTEIN / G protein-coupled receptor / chemokine receptor / CX3CR1 / CX3CL1 | ||||||||||||
機能・相同性 | ![]() C-X3-C chemokine receptor activity / dendritic tree / multiple spine synapse organization, single dendrite / negative regulation of microglial cell mediated cytotoxicity / macropinosome membrane / C-X3-C chemokine binding / regulation of microglial cell migration / CXCR1 chemokine receptor binding / positive regulation of calcium-independent cell-cell adhesion / negative regulation of interleukin-1 alpha production ...C-X3-C chemokine receptor activity / dendritic tree / multiple spine synapse organization, single dendrite / negative regulation of microglial cell mediated cytotoxicity / macropinosome membrane / C-X3-C chemokine binding / regulation of microglial cell migration / CXCR1 chemokine receptor binding / positive regulation of calcium-independent cell-cell adhesion / negative regulation of interleukin-1 alpha production / leukocyte adhesive activation / CX3C chemokine receptor binding / negative regulation of hippocampal neuron apoptotic process / negative regulation of glutamate receptor signaling pathway / microglial cell activation involved in immune response / autocrine signaling / lymphocyte chemotaxis / host-mediated regulation of intestinal microbiota composition / synapse pruning / central nervous system maturation / positive regulation of microglial cell migration / regulation of lipopolysaccharide-mediated signaling pathway / synapse maturation / negative regulation of microglial cell activation / negative regulation of neuron migration / antifungal innate immune response / positive regulation of transforming growth factor beta1 production / chemokine receptor activity / CCR chemokine receptor binding / microglial cell proliferation / positive regulation of actin filament bundle assembly / leukocyte migration involved in inflammatory response / leukocyte tethering or rolling / C-C chemokine receptor activity / integrin activation / regulation of tumor necrosis factor production / chemokine-mediated signaling pathway / C-C chemokine binding / eosinophil chemotaxis / regulation of nitric oxide biosynthetic process / positive regulation of monocyte chemotaxis / leukocyte chemotaxis / angiogenesis involved in wound healing / G protein-coupled peptide receptor activity / chemokine activity / Chemokine receptors bind chemokines / negative regulation of interleukin-1 beta production / positive regulation of cell-matrix adhesion / positive regulation of neurogenesis / neuronal cell body membrane / neuron remodeling / positive regulation of neuroblast proliferation / positive chemotaxis / RSV-host interactions / chemoattractant activity / macrophage chemotaxis / social behavior / negative regulation of interleukin-6 production / Respiratory syncytial virus (RSV) attachment and entry / negative regulation of apoptotic signaling pathway / regulation of neurogenesis / negative regulation of long-term synaptic potentiation / negative regulation of tumor necrosis factor production / negative regulation of extrinsic apoptotic signaling pathway in absence of ligand / negative regulation of cell-substrate adhesion / cellular defense response / positive regulation of protein localization to cell cortex / Adenylate cyclase inhibitory pathway / T cell migration / extrinsic apoptotic signaling pathway in absence of ligand / D2 dopamine receptor binding / cellular response to transforming growth factor beta stimulus / response to prostaglandin E / G protein-coupled serotonin receptor binding / adenylate cyclase regulator activity / adenylate cyclase-inhibiting serotonin receptor signaling pathway / neutrophil chemotaxis / cellular response to forskolin / regulation of mitotic spindle organization / negative regulation of angiogenesis / positive regulation of release of sequestered calcium ion into cytosol / negative regulation of cell migration / response to ischemia / cell projection / cell chemotaxis / Regulation of insulin secretion / positive regulation of smooth muscle cell proliferation / microglial cell activation / positive regulation of cholesterol biosynthetic process / G protein-coupled receptor binding / modulation of chemical synaptic transmission / calcium-mediated signaling / defense response / adenylate cyclase-inhibiting G protein-coupled receptor signaling pathway / cytokine-mediated signaling pathway / G protein-coupled receptor activity / brain development / cell-cell adhesion / regulation of synaptic plasticity / positive regulation of neuron projection development 類似検索 - 分子機能 | ||||||||||||
生物種 | ![]() | ||||||||||||
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: 3.4 Å | ||||||||||||
![]() | Lu, M. / Zhao, W. / Han, S. / Zhu, Y. / Wu, B. / Zhao, Q. | ||||||||||||
資金援助 | ![]()
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![]() | ![]() タイトル: Activation of the human chemokine receptor CX3CR1 regulated by cholesterol. 著者: Minmin Lu / Wenli Zhao / Shuo Han / Xiaowen Lin / Tingyu Xu / Qiuxiang Tan / Mu Wang / Cuiying Yi / Xiaojing Chu / Weibo Yang / Ya Zhu / Beili Wu / Qiang Zhao / ![]() 要旨: As the only member of the CX3C chemokine receptor subfamily, CX3CR1 binds to its sole endogenous ligand CX3CL1, which shows notable potential as a therapeutic target in atherosclerosis, cancer, and ...As the only member of the CX3C chemokine receptor subfamily, CX3CR1 binds to its sole endogenous ligand CX3CL1, which shows notable potential as a therapeutic target in atherosclerosis, cancer, and neuropathy. However, the drug development of CX3CR1 is hampered partially by the lack of structural information. Here, we present two cryo-electron microscopy structures of CX3CR1-G complexes in ligand-free and CX3CL1-bound states at 2.8- and 3.4-Å resolution, respectively. Together with functional data, the structures reveal the key factors that govern the recognition of CX3CL1 by both CX3CR1 and US28. A much smaller conformational change of helix VI upon activation than previously solved class A GPCR-G complex structures is observed in CX3CR1, which may correlate with three cholesterol molecules that play essential roles in conformation stabilization and signaling transduction. Thus, our data deepen the understanding of cholesterol modulation in GPCR (G protein-coupled receptor) signaling and provide insights into the diversity of G protein coupling. | ||||||||||||
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構造の表示
構造ビューア | 分子: ![]() ![]() |
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PDBx/mmCIF形式 | ![]() | 296.4 KB | 表示 | ![]() |
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PDB形式 | ![]() | 227.2 KB | 表示 | ![]() |
PDBx/mmJSON形式 | ![]() | ツリー表示 | ![]() | |
その他 | ![]() |
-検証レポート
アーカイブディレクトリ | ![]() ![]() | HTTPS FTP |
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-関連構造データ
関連構造データ | ![]() 33108MC ![]() 7xbwC 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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類似構造データ | 類似検索 - 機能・相同性 ![]() |
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リンク
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集合体
登録構造単位 | ![]()
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要素
#1: タンパク質 | 分子量: 40447.141 Da / 分子数: 1 / 変異: S47C,G202T,G203A,E245A,A326S / 由来タイプ: 組換発現 / 由来: (組換発現) ![]() 発現宿主: ![]() ![]() 参照: UniProt: P63096 | ||||
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#2: タンパク質 | 分子量: 38245.805 Da / 分子数: 1 / 由来タイプ: 組換発現 / 由来: (組換発現) ![]() 発現宿主: ![]() ![]() 参照: UniProt: P62873 | ||||
#3: タンパク質 | 分子量: 7861.143 Da / 分子数: 1 / 由来タイプ: 組換発現 / 由来: (組換発現) ![]() 発現宿主: ![]() ![]() 参照: UniProt: P59768 | ||||
#4: タンパク質 | 分子量: 51558.250 Da / 分子数: 1 / 変異: G35C,I222L,L278C,C323S,M352V / 由来タイプ: 組換発現 / 由来: (組換発現) ![]() 発現宿主: ![]() ![]() 参照: UniProt: P78423, UniProt: P49238 | ||||
#5: 化合物 | 研究の焦点であるリガンドがあるか | N | Has protein modification | Y | |
-実験情報
-実験
実験 | 手法: 電子顕微鏡法 |
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EM実験 | 試料の集合状態: PARTICLE / 3次元再構成法: 単粒子再構成法 |
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試料調製
構成要素 | 名称: Chemokine receptor CX3CR1 in complex with CX3CL1 Gi1 タイプ: COMPLEX / Entity ID: #1-#4 / 由来: RECOMBINANT |
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由来(天然) | 生物種: ![]() |
由来(組換発現) | 生物種: ![]() ![]() |
緩衝液 | pH: 7.5 |
試料 | 包埋: NO / シャドウイング: NO / 染色: NO / 凍結: YES |
急速凍結 | 凍結剤: ETHANE |
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電子顕微鏡撮影
実験機器 | ![]() モデル: Titan Krios / 画像提供: FEI Company |
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顕微鏡 | モデル: FEI TITAN KRIOS |
電子銃 | 電子線源: ![]() |
電子レンズ | モード: BRIGHT FIELD / 最大 デフォーカス(公称値): 1500 nm / 最小 デフォーカス(公称値): 800 nm |
撮影 | 電子線照射量: 2.1875 e/Å2 フィルム・検出器のモデル: GATAN K3 BIOQUANTUM (6k x 4k) |
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解析
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CTF補正 | タイプ: NONE | ||||||||||||||||||||||||
3次元再構成 | 解像度: 3.4 Å / 解像度の算出法: FSC 0.143 CUT-OFF / 粒子像の数: 490779 / 対称性のタイプ: POINT | ||||||||||||||||||||||||
精密化 | 交差検証法: NONE 立体化学のターゲット値: GeoStd + Monomer Library + CDL v1.2 | ||||||||||||||||||||||||
原子変位パラメータ | Biso mean: 92.34 Å2 | ||||||||||||||||||||||||
拘束条件 |
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