+データを開く
-基本情報
登録情報 | データベース: PDB / ID: 7xbx | ||||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|---|
タイトル | Cryo-EM structure of the human chemokine receptor CX3CR1 in complex with CX3CL1 and Gi1 | ||||||||||||
要素 |
| ||||||||||||
キーワード | SIGNALING PROTEIN / G protein-coupled receptor / chemokine receptor / CX3CR1 / CX3CL1 | ||||||||||||
機能・相同性 | 機能・相同性情報 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 glutamate receptor signaling pathway ...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 glutamate receptor signaling pathway / negative regulation of interleukin-1 alpha production / leukocyte adhesive activation / CX3C chemokine receptor binding / negative regulation of hippocampal neuron apoptotic process / microglial cell activation involved in immune response / host-mediated regulation of intestinal microbiota composition / autocrine signaling / lymphocyte chemotaxis / synapse pruning / central nervous system maturation / positive regulation of microglial cell migration / negative regulation of neuron migration / negative regulation of microglial cell activation / synapse maturation / regulation of lipopolysaccharide-mediated signaling pathway / antifungal innate immune response / positive regulation of transforming growth factor beta1 production / chemokine receptor activity / positive regulation of I-kappaB phosphorylation / microglial cell proliferation / CCR chemokine receptor binding / positive regulation of actin filament bundle assembly / leukocyte migration involved in inflammatory response / C-C chemokine receptor activity / leukocyte tethering or rolling / C-C chemokine binding / integrin activation / angiogenesis involved in wound healing / regulation of tumor necrosis factor production / G protein-coupled peptide receptor activity / eosinophil chemotaxis / positive regulation of monocyte chemotaxis / chemokine-mediated signaling pathway / leukocyte chemotaxis / regulation of nitric oxide biosynthetic process / Chemokine receptors bind chemokines / chemokine activity / negative regulation of cell-substrate adhesion / positive regulation of neurogenesis / negative regulation of interleukin-1 beta production / positive regulation of cell-matrix adhesion / neuron remodeling / positive regulation of neuroblast proliferation / positive chemotaxis / RSV-host interactions / neuronal cell body membrane / chemoattractant activity / negative regulation of interleukin-6 production / Respiratory syncytial virus (RSV) attachment and entry / social behavior / negative regulation of apoptotic signaling pathway / negative regulation of tumor necrosis factor production / regulation of neurogenesis / negative regulation of long-term synaptic potentiation / negative regulation of extrinsic apoptotic signaling pathway in absence of ligand / T cell migration / D2 dopamine receptor binding / Adenylate cyclase inhibitory pathway / positive regulation of protein localization to cell cortex / cellular defense response / regulation of cAMP-mediated signaling / G protein-coupled serotonin receptor binding / extrinsic apoptotic signaling pathway in absence of ligand / cellular response to forskolin / cellular response to transforming growth factor beta stimulus / regulation of mitotic spindle organization / neutrophil chemotaxis / adenylate cyclase-inhibiting G protein-coupled receptor signaling pathway / G-protein beta/gamma-subunit complex binding / cell chemotaxis / positive regulation of release of sequestered calcium ion into cytosol / negative regulation of cell migration / cell projection / response to ischemia / Regulation of insulin secretion / G protein-coupled receptor binding / G protein-coupled receptor activity / positive regulation of smooth muscle cell proliferation / calcium-mediated signaling / brain development / microglial cell activation / modulation of chemical synaptic transmission / adenylate cyclase-modulating G protein-coupled receptor signaling pathway / Olfactory Signaling Pathway / Activation of the phototransduction cascade / regulation of synaptic plasticity / Prostacyclin signalling through prostacyclin receptor / G beta:gamma signalling through PLC beta / Presynaptic function of Kainate receptors / cytokine-mediated signaling pathway 類似検索 - 分子機能 | ||||||||||||
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: 3.4 Å | ||||||||||||
データ登録者 | Lu, M. / Zhao, W. / Han, S. / Zhu, Y. / Wu, B. / Zhao, Q. | ||||||||||||
資金援助 | 中国, 3件
| ||||||||||||
引用 | ジャーナル: Sci Adv / 年: 2022 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. | ||||||||||||
履歴 |
|
-構造の表示
構造ビューア | 分子: MolmilJmol/JSmol |
---|
-ダウンロードとリンク
-ダウンロード
PDBx/mmCIF形式 | 7xbx.cif.gz | 290.2 KB | 表示 | PDBx/mmCIF形式 |
---|---|---|---|---|
PDB形式 | pdb7xbx.ent.gz | 227.2 KB | 表示 | PDB形式 |
PDBx/mmJSON形式 | 7xbx.json.gz | ツリー表示 | PDBx/mmJSON形式 | |
その他 | その他のダウンロード |
-検証レポート
文書・要旨 | 7xbx_validation.pdf.gz | 1.1 MB | 表示 | wwPDB検証レポート |
---|---|---|---|---|
文書・詳細版 | 7xbx_full_validation.pdf.gz | 1.2 MB | 表示 | |
XML形式データ | 7xbx_validation.xml.gz | 36.2 KB | 表示 | |
CIF形式データ | 7xbx_validation.cif.gz | 52.2 KB | 表示 | |
アーカイブディレクトリ | https://data.pdbj.org/pub/pdb/validation_reports/xb/7xbx ftp://data.pdbj.org/pub/pdb/validation_reports/xb/7xbx | HTTPS FTP |
-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 (文献) |
---|---|
類似構造データ | 類似検索 - 機能・相同性F&H 検索 |
-リンク
-集合体
登録構造単位 |
|
---|---|
1 |
|
-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) Homo sapiens (ヒト) / 遺伝子: GNAI1 発現宿主: Spodoptera frugiperda (ツマジロクサヨトウ) 参照: UniProt: P63096 | ||
---|---|---|---|
#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) Homo sapiens (ヒト) / 遺伝子: GNB1 発現宿主: Spodoptera frugiperda (ツマジロクサヨトウ) 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) Homo sapiens (ヒト) / 遺伝子: GNG2 発現宿主: Spodoptera frugiperda (ツマジロクサヨトウ) 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) Homo sapiens (ヒト) / 遺伝子: CX3CR1, CMKBRL1, GPR13 発現宿主: Spodoptera frugiperda (ツマジロクサヨトウ) 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 | |
-実験情報
-実験
実験 | 手法: 電子顕微鏡法 |
---|---|
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 |
-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 |
---|---|
由来(天然) | 生物種: Homo sapiens (ヒト) |
由来(組換発現) | 生物種: Spodoptera frugiperda (ツマジロクサヨトウ) |
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 |
-電子顕微鏡撮影
実験機器 | モデル: Titan Krios / 画像提供: FEI Company |
---|---|
顕微鏡 | モデル: FEI TITAN KRIOS |
電子銃 | 電子線源: FIELD EMISSION GUN / 加速電圧: 300 kV / 照射モード: SPOT SCAN |
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) |
-解析
ソフトウェア |
| ||||||||||||||||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
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 |
|