+データを開く
-基本情報
登録情報 | データベース: PDB / ID: 6lfo | ||||||
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タイトル | Cryo-EM structure of a class A GPCR monomer | ||||||
要素 |
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キーワード | MEMBRANE PROTEIN / G protein coupled-receptor | ||||||
機能・相同性 | 機能・相同性情報 interleukin-8-mediated signaling pathway / mast cell granule / interleukin-8 receptor activity / regulation of single stranded viral RNA replication via double stranded DNA intermediate / regulation of entry of bacterium into host cell / interleukin-8 receptor binding / interleukin-8 binding / : / C-X-C chemokine receptor activity / negative regulation of cell adhesion molecule production ...interleukin-8-mediated signaling pathway / mast cell granule / interleukin-8 receptor activity / regulation of single stranded viral RNA replication via double stranded DNA intermediate / regulation of entry of bacterium into host cell / interleukin-8 receptor binding / interleukin-8 binding / : / C-X-C chemokine receptor activity / negative regulation of cell adhesion molecule production / CXCR chemokine receptor binding / ATF4 activates genes in response to endoplasmic reticulum stress / embryonic digestive tract development / C-C chemokine receptor activity / neutrophil activation / C-C chemokine binding / induction of positive chemotaxis / cellular response to fibroblast growth factor stimulus / chemokine-mediated signaling pathway / positive regulation of neutrophil chemotaxis / Chemokine receptors bind chemokines / chemokine activity / dendritic cell chemotaxis / negative regulation of G protein-coupled receptor signaling pathway / Interleukin-10 signaling / cellular response to interleukin-1 / T cell migration / D2 dopamine receptor binding / Adenylate cyclase inhibitory pathway / positive regulation of protein localization to cell cortex / cellular defense response / regulation of cell adhesion / regulation of cAMP-mediated signaling / G protein-coupled serotonin receptor binding / cellular response to forskolin / regulation of mitotic spindle organization / neutrophil chemotaxis / response to endoplasmic reticulum stress / adenylate cyclase-inhibiting G protein-coupled receptor signaling pathway / Peptide ligand-binding receptors / secretory granule membrane / Regulation of insulin secretion / G protein-coupled receptor binding / G protein-coupled receptor activity / calcium-mediated signaling / response to molecule of bacterial origin / G-protein beta/gamma-subunit complex binding / adenylate cyclase-modulating G protein-coupled receptor signaling pathway / Olfactory Signaling Pathway / Activation of the phototransduction cascade / receptor internalization / G beta:gamma signalling through PLC beta / Presynaptic function of Kainate receptors / Thromboxane signalling through TP receptor / G protein-coupled acetylcholine receptor signaling pathway / G-protein activation / Activation of G protein gated Potassium channels / Inhibition of voltage gated Ca2+ channels via Gbeta/gamma subunits / mitotic spindle / Prostacyclin signalling through prostacyclin receptor / Glucagon signaling in metabolic regulation / G beta:gamma signalling through CDC42 / response to peptide hormone / G beta:gamma signalling through BTK / ADP signalling through P2Y purinoceptor 12 / Sensory perception of sweet, bitter, and umami (glutamate) taste / Synthesis, secretion, and inactivation of Glucagon-like Peptide-1 (GLP-1) / photoreceptor disc membrane / Glucagon-type ligand receptors / Adrenaline,noradrenaline inhibits insulin secretion / Vasopressin regulates renal water homeostasis via Aquaporins / G alpha (z) signalling events / Glucagon-like Peptide-1 (GLP1) regulates insulin secretion / ADORA2B mediated anti-inflammatory cytokines production / cellular response to catecholamine stimulus / positive regulation of angiogenesis / sensory perception of taste / ADP signalling through P2Y purinoceptor 1 / G beta:gamma signalling through PI3Kgamma / adenylate cyclase-activating dopamine receptor signaling pathway / Cooperation of PDCL (PhLP1) and TRiC/CCT in G-protein beta folding / chemotaxis / GPER1 signaling / GDP binding / microtubule cytoskeleton / cellular response to prostaglandin E stimulus / G-protein beta-subunit binding / antimicrobial humoral immune response mediated by antimicrobial peptide / Inactivation, recovery and regulation of the phototransduction cascade / heterotrimeric G-protein complex / G alpha (12/13) signalling events / extracellular vesicle / signaling receptor complex adaptor activity / Thrombin signalling through proteinase activated receptors (PARs) / cellular response to tumor necrosis factor / GTPase binding / heparin binding / retina development in camera-type eye / Ca2+ pathway / cell cortex 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 | Liu, Z.J. / Hua, T. / Liu, K.W. / Wu, L.J. | ||||||
引用 | ジャーナル: Nature / 年: 2020 タイトル: Structural basis of CXC chemokine receptor 2 activation and signalling. 著者: Kaiwen Liu / Lijie Wu / Shuguang Yuan / Meng Wu / Yueming Xu / Qianqian Sun / Shu Li / Suwen Zhao / Tian Hua / Zhi-Jie Liu / 要旨: Chemokines and their receptors mediate cell migration, which influences multiple fundamental biological processes and disease conditions such as inflammation and cancer. Although ample effort has ...Chemokines and their receptors mediate cell migration, which influences multiple fundamental biological processes and disease conditions such as inflammation and cancer. Although ample effort has been invested into the structural investigation of the chemokine receptors and receptor-chemokine recognition, less is known about endogenous chemokine-induced receptor activation and G-protein coupling. Here we present the cryo-electron microscopy structures of interleukin-8 (IL-8, also known as CXCL8)-activated human CXC chemokine receptor 2 (CXCR2) in complex with G protein, along with a crystal structure of CXCR2 bound to a designed allosteric antagonist. Our results reveal a unique shallow mode of binding between CXCL8 and CXCR2, and also show the interactions between CXCR2 and G protein. Further structural analysis of the inactive and active states of CXCR2 reveals a distinct activation process and the competitive small-molecule antagonism of chemokine receptors. In addition, our results provide insights into how a G-protein-coupled receptor is activated by an endogenous protein molecule, which will assist in the rational development of therapeutics that target the chemokine system for better pharmacological profiles. | ||||||
履歴 |
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-構造の表示
ムービー |
ムービービューア |
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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 | 6lfo.cif.gz | 247.7 KB | 表示 | PDBx/mmCIF形式 |
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PDB形式 | pdb6lfo.ent.gz | 190.7 KB | 表示 | PDB形式 |
PDBx/mmJSON形式 | 6lfo.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 | 6lfo_validation.pdf.gz | 970.4 KB | 表示 | wwPDB検証レポート |
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文書・詳細版 | 6lfo_full_validation.pdf.gz | 981.5 KB | 表示 | |
XML形式データ | 6lfo_validation.xml.gz | 37.3 KB | 表示 | |
CIF形式データ | 6lfo_validation.cif.gz | 58 KB | 表示 | |
アーカイブディレクトリ | https://data.pdbj.org/pub/pdb/validation_reports/lf/6lfo ftp://data.pdbj.org/pub/pdb/validation_reports/lf/6lfo | HTTPS FTP |
-関連構造データ
-リンク
-集合体
登録構造単位 |
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1 |
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-要素
-Guanine nucleotide-binding protein ... , 3種, 3分子 ABC
#1: タンパク質 | 分子量: 40283.836 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: GNAI1 発現宿主: Spodoptera frugiperda (ツマジロクサヨトウ) 参照: UniProt: P63096 |
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#2: タンパク質 | 分子量: 38045.629 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 |
-タンパク質 , 2種, 2分子 DR
#4: タンパク質 | 分子量: 7600.903 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: CXCL8, IL8 発現宿主: Spodoptera frugiperda (ツマジロクサヨトウ) 参照: UniProt: P10145 |
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#5: タンパク質 | 分子量: 40798.121 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: CXCR2, IL8RB 発現宿主: Spodoptera frugiperda (ツマジロクサヨトウ) 参照: UniProt: P25025 |
-抗体 / 非ポリマー , 2種, 2分子 S
#6: 抗体 | 分子量: 27784.896 Da / 分子数: 1 / 由来タイプ: 組換発現 / 由来: (組換発現) Homo sapiens (ヒト) 発現宿主: Spodoptera frugiperda (ツマジロクサヨトウ) |
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#7: 化合物 | ChemComp-CLR / |
-詳細
研究の焦点であるリガンドがあるか | N |
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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 |
-試料調製
構成要素 | 名称: Ternary complex of chemokine-monomer, GPCR and G protein タイプ: COMPLEX / Entity ID: #1-#6 / 由来: RECOMBINANT |
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分子量 | 値: 0.15 MDa / 実験値: YES |
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 | 濃度: 1 mg/ml / 包埋: NO / シャドウイング: NO / 染色: NO / 凍結: YES |
試料支持 | グリッドの材料: GOLD / グリッドのサイズ: 300 divisions/in. / グリッドのタイプ: Homemade |
急速凍結 | 装置: FEI VITROBOT MARK IV / 凍結剤: ETHANE / 湿度: 100 % / 凍結前の試料温度: 277 K |
-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: FIELD EMISSION GUN / 加速電圧: 300 kV / 照射モード: FLOOD BEAM |
電子レンズ | モード: BRIGHT FIELD / 倍率(公称値): 130000 X / 倍率(補正後): 130000 X / 最大 デフォーカス(公称値): 2000 nm / 最小 デフォーカス(公称値): 800 nm / Calibrated defocus min: 800 nm / 最大 デフォーカス(補正後): 2000 nm / Cs: 2.7 mm / C2レンズ絞り径: 50 µm / アライメント法: BASIC |
試料ホルダ | 凍結剤: NITROGEN 試料ホルダーモデル: FEI TITAN KRIOS AUTOGRID HOLDER |
撮影 | 平均露光時間: 0.8 sec. / 電子線照射量: 8 e/Å2 / 検出モード: SUPER-RESOLUTION フィルム・検出器のモデル: GATAN K2 SUMMIT (4k x 4k) 撮影したグリッド数: 5 / 実像数: 9004 |
電子光学装置 | エネルギーフィルタースリット幅: 20 eV |
画像スキャン | 横: 7420 / 縦: 7676 / 動画フレーム数/画像: 45 |
-解析
EMソフトウェア |
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CTF補正 | 詳細: Patch CTF refinement / タイプ: PHASE FLIPPING AND AMPLITUDE CORRECTION | ||||||||||||||||||||||||||||
粒子像の選択 | 選択した粒子像数: 7903150 | ||||||||||||||||||||||||||||
対称性 | 点対称性: C1 (非対称) | ||||||||||||||||||||||||||||
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: 276958 / 対称性のタイプ: POINT | ||||||||||||||||||||||||||||
原子モデル構築 | B value: 93.7 / プロトコル: AB INITIO MODEL / 空間: REAL / Target criteria: Correlation coefficient | ||||||||||||||||||||||||||||
原子モデル構築 | PDB-ID: 6N4B Accession code: 6N4B / Source name: PDB / タイプ: experimental model |