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基本情報
登録情報 | データベース: PDB / ID: 8vj9 | |||||||||||||||||||||||||||||||||||||||
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タイトル | CryoEM structure of human ACKR3 phosphorylated by GRK5 in complex with Arrestin3 variant with the C edge loop from Arrestin2 inserted | |||||||||||||||||||||||||||||||||||||||
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![]() | SIGNALING PROTEIN/IMMUNE SYSTEM / GPCR / arrestin / signaling / SIGNALING PROTEIN-IMMUNE SYSTEM complex | |||||||||||||||||||||||||||||||||||||||
機能・相同性 | ![]() oculomotor nerve development / positive regulation of mesenchymal stem cell migration / C-X-C chemokine binding / angiotensin receptor binding / C-X-C chemokine receptor activity / desensitization of G protein-coupled receptor signaling pathway / C-C chemokine receptor activity / negative regulation of intrinsic apoptotic signaling pathway in response to DNA damage / chemokine-mediated signaling pathway / C-C chemokine binding ...oculomotor nerve development / positive regulation of mesenchymal stem cell migration / C-X-C chemokine binding / angiotensin receptor binding / C-X-C chemokine receptor activity / desensitization of G protein-coupled receptor signaling pathway / C-C chemokine receptor activity / negative regulation of intrinsic apoptotic signaling pathway in response to DNA damage / chemokine-mediated signaling pathway / C-C chemokine binding / G protein-coupled receptor internalization / inositol hexakisphosphate binding / Chemokine receptors bind chemokines / scavenger receptor activity / phosphatidylinositol-3,4,5-trisphosphate binding / positive regulation of receptor internalization / endocytic vesicle / vasculogenesis / coreceptor activity / clathrin-coated pit / phosphatidylinositol binding / cell chemotaxis / calcium-mediated signaling / recycling endosome / receptor internalization / protein transport / positive regulation of cytosolic calcium ion concentration / G alpha (i) signalling events / angiogenesis / early endosome / positive regulation of ERK1 and ERK2 cascade / endosome / cell adhesion / immune response / external side of plasma membrane / negative regulation of cell population proliferation / intracellular membrane-bounded organelle / cell surface / signal transduction / nucleus / plasma membrane / cytoplasm 類似検索 - 分子機能 | |||||||||||||||||||||||||||||||||||||||
生物種 | synthetic construct (人工物)![]() ![]() ![]() | |||||||||||||||||||||||||||||||||||||||
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: 3.3 Å | |||||||||||||||||||||||||||||||||||||||
![]() | Chen, Q. / Tesmer, J.J.G. | |||||||||||||||||||||||||||||||||||||||
資金援助 | ![]()
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![]() | ![]() タイトル: Effect of phosphorylation barcodes on arrestin binding to a chemokine receptor. 著者: Qiuyan Chen / Christopher T Schafer / Somnath Mukherjee / Kai Wang / Martin Gustavsson / James R Fuller / Katelyn Tepper / Thomas D Lamme / Yasmin Aydin / Parth Agrawal / Genki Terashi / Xin- ...著者: Qiuyan Chen / Christopher T Schafer / Somnath Mukherjee / Kai Wang / Martin Gustavsson / James R Fuller / Katelyn Tepper / Thomas D Lamme / Yasmin Aydin / Parth Agrawal / Genki Terashi / Xin-Qiu Yao / Daisuke Kihara / Anthony A Kossiakoff / Tracy M Handel / John J G Tesmer / ![]() ![]() ![]() 要旨: Unique phosphorylation 'barcodes' installed in different regions of an active seven-transmembrane receptor by different G-protein-coupled receptor (GPCR) kinases (GRKs) have been proposed to promote ...Unique phosphorylation 'barcodes' installed in different regions of an active seven-transmembrane receptor by different G-protein-coupled receptor (GPCR) kinases (GRKs) have been proposed to promote distinct cellular outcomes, but it is unclear whether or how arrestins differentially engage these barcodes. Here, to address this, we developed an antigen-binding fragment (Fab7) that recognizes both active arrestin2 (β-arrestin1) and arrestin3 (β-arrestin2) without interacting with bound receptor polypeptides. We used Fab7 to determine the structures of both arrestins in complex with atypical chemokine receptor 3 (ACKR3) phosphorylated in different regions of its C-terminal tail by either GRK2 or GRK5 (ref. ). The GRK2-phosphorylated ACKR3 resulted in more heterogeneous 'tail-mode' assemblies, whereas phosphorylation by GRK5 resulted in more rigid 'ACKR3-adjacent' assemblies. Unexpectedly, the finger loops of both arrestins engaged the micelle surface rather than the receptor intracellular pocket, with arrestin3 being more dynamic, partly because of its lack of a membrane-anchoring motif. Thus, both the region of the barcode and the arrestin isoform involved can alter the structure and dynamics of GPCR-arrestin complexes, providing a possible mechanistic basis for unique downstream cellular effects, such as the efficiency of chemokine scavenging and the robustness of arrestin binding in ACKR3. | |||||||||||||||||||||||||||||||||||||||
履歴 |
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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 | ![]() | 253.2 KB | 表示 | ![]() |
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PDB形式 | ![]() | 197.6 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 | ![]() 43277MC ![]() 8tiiC ![]() 8tilC ![]() 8tinC ![]() 8tioC ![]() 41287 ![]() 41288 ![]() 41293 ![]() 41294 C: 同じ文献を引用 ( M: このデータのモデリングに利用したマップデータ |
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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: 抗体 | 分子量: 25720.758 Da / 分子数: 1 / 由来タイプ: 組換発現 / 由来: (組換発現) synthetic construct (人工物) / 発現宿主: ![]() ![]() |
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#2: 抗体 | 分子量: 23471.031 Da / 分子数: 1 / 由来タイプ: 組換発現 / 由来: (組換発現) synthetic construct (人工物) / 発現宿主: ![]() ![]() |
#3: タンパク質 | 分子量: 45356.367 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: P25106 |
#4: タンパク質 | 分子量: 44863.176 Da / 分子数: 1 Fragment: Arrestin3 variant with the C edge loop from Arrestin2 inserted 由来タイプ: 組換発現 / 由来: (組換発現) ![]() ![]() ![]() ![]() |
研究の焦点であるリガンドがあるか | Y |
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: human ACKR3 phosphorylated by GRK5 in complex with Arrestin3 タイプ: COMPLEX / Entity ID: all / 由来: MULTIPLE SOURCES |
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由来(天然) | 生物種: ![]() ![]() |
由来(組換発現) | 生物種: ![]() ![]() |
緩衝液 | pH: 8 |
試料 | 濃度: 0.7 mg/ml / 包埋: NO / シャドウイング: NO / 染色: NO / 凍結: YES |
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 |
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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): 2500 nm / 最小 デフォーカス(公称値): 600 nm |
撮影 | 電子線照射量: 56 e/Å2 / フィルム・検出器のモデル: GATAN K3 (6k x 4k) |
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解析
EMソフトウェア |
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CTF補正 | タイプ: NONE | ||||||||||||||||||||||||
3次元再構成 | 解像度: 3.3 Å / 解像度の算出法: FSC 0.143 CUT-OFF / 粒子像の数: 214953 / 対称性のタイプ: POINT | ||||||||||||||||||||||||
拘束条件 |
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