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基本情報
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タイトル | Structure of CXCR2 bound to CXCL8 (Ligand-receptor focused map) | |||||||||
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![]() | GPCR / Arrestin / SIGNALING PROTEIN-IMMUNE SYSTEM complex | |||||||||
機能・相同性 | ![]() 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-mediated signaling pathway / metanephric tubule morphogenesis / negative regulation of neutrophil apoptotic process / mast cell granule / interleukin-8 receptor activity / interleukin-8 binding / acute inflammatory response to antigenic stimulus ...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-mediated signaling pathway / metanephric tubule morphogenesis / negative regulation of neutrophil apoptotic process / mast cell granule / interleukin-8 receptor activity / interleukin-8 binding / acute inflammatory response to antigenic stimulus / negative regulation of cell adhesion molecule production / CXCR chemokine receptor binding / C-X-C chemokine receptor activity / ATF4 activates genes in response to endoplasmic reticulum stress / embryonic digestive tract development / neutrophil activation / induction of positive chemotaxis / C-C chemokine receptor activity / C-C chemokine binding / positive regulation of vascular permeability / chemokine activity / positive regulation of neutrophil chemotaxis / Chemokine receptors bind chemokines / dendritic cell chemotaxis / negative regulation of G protein-coupled receptor signaling pathway / midbrain development / Interleukin-10 signaling / cellular response to interleukin-1 / cellular response to fibroblast growth factor stimulus / cellular defense response / regulation of cell adhesion / positive regulation of cardiac muscle cell apoptotic process / neutrophil chemotaxis / response to endoplasmic reticulum stress / Peptide ligand-binding receptors / secretory granule membrane / calcium-mediated signaling / response to molecule of bacterial origin / G protein-coupled receptor activity / receptor internalization / antimicrobial humoral immune response mediated by antimicrobial peptide / positive regulation of angiogenesis / chemotaxis / mitotic spindle / cellular response to tumor necrosis factor / heparin binding / microtubule cytoskeleton / cellular response to lipopolysaccharide / positive regulation of cytosolic calcium ion concentration / Senescence-Associated Secretory Phenotype (SASP) / G alpha (i) signalling events / Interleukin-4 and Interleukin-13 signaling / phospholipase C-activating G protein-coupled receptor signaling pathway / angiogenesis / cell surface receptor signaling pathway / intracellular signal transduction / immune response / G protein-coupled receptor signaling pathway / inflammatory response / external side of plasma membrane / negative regulation of cell population proliferation / negative regulation of gene expression / positive regulation of cell population proliferation / Neutrophil degranulation / positive regulation of gene expression / cell surface / signal transduction / extracellular space / extracellular region / nucleoplasm / membrane / plasma membrane 類似検索 - 分子機能 | |||||||||
生物種 | ![]() | |||||||||
手法 | 単粒子再構成法 / クライオ電子顕微鏡法 / 解像度: 3.29 Å | |||||||||
![]() | Sano FK / Saha S / Sharma S / Ganguly M / Shihoya W / Nureki O / Shukla AK / Banerjee R | |||||||||
資金援助 | ![]()
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![]() | ![]() タイトル: Molecular basis of promiscuous chemokine binding and structural mimicry at the C-X-C chemokine receptor, CXCR2. 著者: Shirsha Saha / Fumiya K Sano / Saloni Sharma / Manisankar Ganguly / Sudha Mishra / Annu Dalal / Hiroaki Akasaka / Takaaki A Kobayashi / Nashrah Zaidi / Divyanshu Tiwari / Nabarun Roy / Manish ...著者: Shirsha Saha / Fumiya K Sano / Saloni Sharma / Manisankar Ganguly / Sudha Mishra / Annu Dalal / Hiroaki Akasaka / Takaaki A Kobayashi / Nashrah Zaidi / Divyanshu Tiwari / Nabarun Roy / Manish K Yadav / Nilanjana Banerjee / Sayantan Saha / Samanwita Mohapatra / Yuzuru Itoh / Andy Chevigné / Ramanuj Banerjee / Wataru Shihoya / Osamu Nureki / Arun K Shukla / ![]() ![]() 要旨: Selectivity of natural agonists for their cognate receptors is a hallmark of G-protein-coupled receptors (GPCRs); however, this selectivity often breaks down at the chemokine receptors. Chemokines ...Selectivity of natural agonists for their cognate receptors is a hallmark of G-protein-coupled receptors (GPCRs); however, this selectivity often breaks down at the chemokine receptors. Chemokines often display promiscuous binding to chemokine receptors, but the underlying molecular determinants remain mostly elusive. Here, we perform a comprehensive transducer-coupling analysis, testing all known C-X-C chemokines on every C-X-C type chemokine receptor to generate a global fingerprint of the selectivity and promiscuity encoded within this system. Taking lead from this, we determine cryoelectron microscopy (cryo-EM) structures of the most promiscuous receptor, C-X-C chemokine receptor 2 (CXCR2), in complex with several chemokines. These structural snapshots elucidate the details of ligand-receptor interactions, including structural motifs, which are validated using mutagenesis and functional experiments. We also observe that most chemokines position themselves on CXCR2 as a dimer while CXCL6 exhibits a monomeric binding pose. Taken together, our findings provide the molecular basis of chemokine promiscuity at CXCR2 with potential implications for developing therapeutic molecules. | |||||||||
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構造の表示
添付画像 |
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ダウンロードとリンク
-EMDBアーカイブ
マップデータ | ![]() | 47.6 MB | ![]() | |
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ヘッダ (付随情報) | ![]() ![]() | 19.8 KB 19.8 KB | 表示 表示 | ![]() |
FSC (解像度算出) | ![]() | 7.9 KB | 表示 | ![]() |
画像 | ![]() | 97.1 KB | ||
Filedesc metadata | ![]() | 6.5 KB | ||
その他 | ![]() ![]() | 48.9 MB 48.9 MB | ||
アーカイブディレクトリ | ![]() ![]() | HTTPS FTP |
-関連構造データ
関連構造データ | ![]() 8xwnMC ![]() 8xvuC ![]() 8xwaC ![]() 8xwfC ![]() 8xwmC ![]() 8xwsC ![]() 8xwvC ![]() 8xx3C ![]() 8xx6C ![]() 8xx7C ![]() 8xxhC ![]() 8xxrC ![]() 8xxxC M: このマップから作成された原子モデル 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
EMDBのページ | ![]() ![]() |
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「今月の分子」の関連する項目 |
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マップ
ファイル | ![]() | ||||||||||||||||||||||||||||||||||||
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投影像・断面図 | 画像のコントロール
画像は Spider により作成 | ||||||||||||||||||||||||||||||||||||
ボクセルのサイズ | X=Y=Z: 1.0375 Å | ||||||||||||||||||||||||||||||||||||
密度 |
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対称性 | 空間群: 1 | ||||||||||||||||||||||||||||||||||||
詳細 | EMDB XML:
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-添付データ
-ハーフマップ: #2
ファイル | emd_38739_half_map_1.map | ||||||||||||
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投影像・断面図 |
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密度ヒストグラム |
-ハーフマップ: #1
ファイル | emd_38739_half_map_2.map | ||||||||||||
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投影像・断面図 |
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密度ヒストグラム |
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試料の構成要素
-全体 : C-X-C chemokine receptor type 2 in complex with C-X-C motif chemo...
全体 | 名称: C-X-C chemokine receptor type 2 in complex with C-X-C motif chemokine 8 |
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要素 |
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-超分子 #1: C-X-C chemokine receptor type 2 in complex with C-X-C motif chemo...
超分子 | 名称: C-X-C chemokine receptor type 2 in complex with C-X-C motif chemokine 8 タイプ: complex / ID: 1 / 親要素: 0 / 含まれる分子: all |
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由来(天然) | 生物種: ![]() |
-超分子 #2: C-X-C chemokine receptor type 2
超分子 | 名称: C-X-C chemokine receptor type 2 / タイプ: complex / ID: 2 / 親要素: 1 / 含まれる分子: #1 |
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由来(天然) | 生物種: ![]() |
-超分子 #3: C-X-C motif chemokine 8
超分子 | 名称: C-X-C motif chemokine 8 / タイプ: complex / ID: 3 / 親要素: 1 / 含まれる分子: #2 |
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-分子 #1: C-X-C chemokine receptor type 2
分子 | 名称: C-X-C chemokine receptor type 2 / タイプ: protein_or_peptide / ID: 1 / コピー数: 1 / 光学異性体: LEVO |
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由来(天然) | 生物種: ![]() |
分子量 | 理論値: 46.699609 KDa |
組換発現 | 生物種: ![]() ![]() |
配列 | 文字列: MGKTIIALSY IFCLVFADYK DDDDAANFTP VNGSSGNQSV RLVTSSSLEV LFQGPGSEDF NMESDSFEDF WKGEDLSNYS YSSTLPPFL LDAAPCEPES LEINKYFVVI IYALVFLLSL LGNSLVMLVI LYSRVGRSVT DVYLLNLALA DLLFALTLPI W AASKVNGW ...文字列: MGKTIIALSY IFCLVFADYK DDDDAANFTP VNGSSGNQSV RLVTSSSLEV LFQGPGSEDF NMESDSFEDF WKGEDLSNYS YSSTLPPFL LDAAPCEPES LEINKYFVVI IYALVFLLSL LGNSLVMLVI LYSRVGRSVT DVYLLNLALA DLLFALTLPI W AASKVNGW IFGTFLCKVV SLLKEVNFYS GILLLACISV DRYLAIVHAT RTLTQKRYLV KFICLSIWGL SLLLALPVLL FR RTVYSSN VSPACYEDMG NNTANWRMLL RILPQSFGFI VPLLIMLFCY GFTLRTLFKA HMGQKHRAMR VIFAVVLIFL LCW LPYNLV LLADTLMRTQ VIQETCERRN HIDRALDATE ILGILHSCLN PLIYAFIGQK FRHGLLKILA IHGLISKDSL PKDS RPSFV GSSSGHTSTT L UniProtKB: C-X-C chemokine receptor type 2 |
-分子 #2: MDNCF-a
分子 | 名称: MDNCF-a / タイプ: protein_or_peptide / ID: 2 / コピー数: 2 / 光学異性体: LEVO |
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由来(天然) | 生物種: ![]() |
分子量 | 理論値: 9.125646 KDa |
組換発現 | 生物種: ![]() ![]() |
配列 | 文字列: EGAVLPRSAK ELRCQCIKTY SKPFHPKFIK ELRVIESGPH CANTEIIVKL SDGRELCLDP KENWVQRVVE KFLKRAENS UniProtKB: Interleukin-8 |
-実験情報
-構造解析
手法 | クライオ電子顕微鏡法 |
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![]() | 単粒子再構成法 |
試料の集合状態 | particle |
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試料調製
緩衝液 | pH: 7.4 |
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凍結 | 凍結剤: ETHANE |
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電子顕微鏡法
顕微鏡 | FEI TITAN KRIOS |
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撮影 | フィルム・検出器のモデル: GATAN K3 (6k x 4k) / 検出モード: COUNTING / 平均電子線量: 50.2 e/Å2 |
電子線 | 加速電圧: 300 kV / 電子線源: ![]() |
電子光学系 | 照射モード: FLOOD BEAM / 撮影モード: BRIGHT FIELD / Cs: 2.7 mm / 最大 デフォーカス(公称値): 1.6 µm / 最小 デフォーカス(公称値): 0.8 µm |
試料ステージ | 試料ホルダーモデル: FEI TITAN KRIOS AUTOGRID HOLDER ホルダー冷却材: NITROGEN |
実験機器 | ![]() モデル: Titan Krios / 画像提供: FEI Company |
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画像解析
-原子モデル構築 1
初期モデル | Chain - Source name: SwissModel / Chain - Initial model type: in silico model |
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精密化 | 空間: REAL / プロトコル: FLEXIBLE FIT |
得られたモデル | ![]() PDB-8xwn: |