+データを開く
-基本情報
登録情報 | データベース: PDB / ID: 7mt9 | |||||||||||||||
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タイトル | Rhodopsin kinase (GRK1) in complex with rhodopsin | |||||||||||||||
要素 |
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キーワード | MEMBRANE PROTEIN/Signaling protein / GPCR / signal desensitization / Kinase / MEMBRANE PROTEIN / MEMBRANE PROTEIN-Signaling protein complex | |||||||||||||||
機能・相同性 | 機能・相同性情報 rhodopsin kinase / rhodopsin kinase activity / Opsins / VxPx cargo-targeting to cilium / regulation of opsin-mediated signaling pathway / opsin binding / rod bipolar cell differentiation / sperm head plasma membrane / absorption of visible light / The canonical retinoid cycle in rods (twilight vision) ...rhodopsin kinase / rhodopsin kinase activity / Opsins / VxPx cargo-targeting to cilium / regulation of opsin-mediated signaling pathway / opsin binding / rod bipolar cell differentiation / sperm head plasma membrane / absorption of visible light / The canonical retinoid cycle in rods (twilight vision) / G protein-coupled opsin signaling pathway / photoreceptor inner segment membrane / podosome assembly / 11-cis retinal binding / G protein-coupled photoreceptor activity / rod photoreceptor outer segment / cellular response to light stimulus / G protein-coupled receptor complex / Inactivation, recovery and regulation of the phototransduction cascade / thermotaxis / Activation of the phototransduction cascade / phototransduction, visible light / outer membrane / detection of temperature stimulus involved in thermoception / response to light intensity / photoreceptor cell maintenance / arrestin family protein binding / photoreceptor outer segment membrane / G alpha (i) signalling events / phototransduction / response to light stimulus / photoreceptor outer segment / G-protein alpha-subunit binding / regulation of signal transduction / sperm midpiece / visual perception / guanyl-nucleotide exchange factor activity / microtubule cytoskeleton organization / photoreceptor disc membrane / cell-cell junction / gene expression / protein autophosphorylation / G protein-coupled receptor signaling pathway / Golgi membrane / signal transduction / zinc ion binding / ATP binding / identical protein binding / membrane / plasma membrane / cytoplasm 類似検索 - 分子機能 | |||||||||||||||
生物種 | Bos taurus (ウシ) | |||||||||||||||
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: 7 Å | |||||||||||||||
データ登録者 | Chen, Q. / Chen, C.-L. / Tesmer, J.J.G. | |||||||||||||||
資金援助 | 米国, 4件
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引用 | ジャーナル: Nature / 年: 2021 タイトル: Structures of rhodopsin in complex with G-protein-coupled receptor kinase 1. 著者: Qiuyan Chen / Manolo Plasencia / Zhuang Li / Somnath Mukherjee / Dhabaleswar Patra / Chun-Liang Chen / Thomas Klose / Xin-Qiu Yao / Anthony A Kossiakoff / Leifu Chang / Philip C Andrews / John J G Tesmer / 要旨: G-protein-coupled receptor (GPCR) kinases (GRKs) selectively phosphorylate activated GPCRs, thereby priming them for desensitization. Although it is unclear how GRKs recognize these receptors, a ...G-protein-coupled receptor (GPCR) kinases (GRKs) selectively phosphorylate activated GPCRs, thereby priming them for desensitization. Although it is unclear how GRKs recognize these receptors, a conserved region at the GRK N terminus is essential for this process. Here we report a series of cryo-electron microscopy single-particle reconstructions of light-activated rhodopsin (Rho*) bound to rhodopsin kinase (GRK1), wherein the N terminus of GRK1 forms a helix that docks into the open cytoplasmic cleft of Rho*. The helix also packs against the GRK1 kinase domain and stabilizes it in an active configuration. The complex is further stabilized by electrostatic interactions between basic residues that are conserved in most GPCRs and acidic residues that are conserved in GRKs. We did not observe any density for the regulator of G-protein signalling homology domain of GRK1 or the C terminus of rhodopsin. Crosslinking with mass spectrometry analysis confirmed these results and revealed dynamic behaviour in receptor-bound GRK1 that would allow the phosphorylation of multiple sites in the receptor tail. We have identified GRK1 residues whose mutation augments kinase activity and crosslinking with Rho*, as well as residues that are involved in activation by acidic phospholipids. From these data, we present a general model for how a small family of protein kinases can recognize and be activated by hundreds of different GPCRs. | |||||||||||||||
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 | 7mt9.cif.gz | 659 KB | 表示 | PDBx/mmCIF形式 |
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PDB形式 | pdb7mt9.ent.gz | 555.2 KB | 表示 | PDB形式 |
PDBx/mmJSON形式 | 7mt9.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 | 7mt9_validation.pdf.gz | 835.2 KB | 表示 | wwPDB検証レポート |
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文書・詳細版 | 7mt9_full_validation.pdf.gz | 855.1 KB | 表示 | |
XML形式データ | 7mt9_validation.xml.gz | 81.6 KB | 表示 | |
CIF形式データ | 7mt9_validation.cif.gz | 125.4 KB | 表示 | |
アーカイブディレクトリ | https://data.pdbj.org/pub/pdb/validation_reports/mt/7mt9 ftp://data.pdbj.org/pub/pdb/validation_reports/mt/7mt9 | 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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モデル数 | 6 |
-要素
#1: タンパク質 | 分子量: 61429.934 Da / 分子数: 1 / 由来タイプ: 組換発現 / 由来: (組換発現) Bos taurus (ウシ) / 遺伝子: GRK1, RHOK 発現宿主: Spodoptera frugiperda (ツマジロクサヨトウ) 参照: UniProt: P28327, rhodopsin kinase |
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#2: タンパク質 | 分子量: 39031.457 Da / 分子数: 1 / 由来タイプ: 天然 / 由来: (天然) Bos taurus (ウシ) / 参照: UniProt: P02699 |
#3: 化合物 | ChemComp-SGV / |
#4: 化合物 | ChemComp-RET / |
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 |
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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: Rhodopsin kinase (GRK1) in complex with rhodopsin / タイプ: COMPLEX / Entity ID: #1-#2 / 由来: MULTIPLE SOURCES |
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由来(天然) | 生物種: Bos taurus (ウシ) |
緩衝液 | pH: 8 |
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 |
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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 |
撮影 | 電子線照射量: 54 e/Å2 フィルム・検出器のモデル: GATAN K3 BIOQUANTUM (6k x 4k) |
-解析
CTF補正 | タイプ: PHASE FLIPPING AND AMPLITUDE CORRECTION |
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3次元再構成 | 解像度: 7 Å / 解像度の算出法: FSC 0.143 CUT-OFF / 粒子像の数: 183717 / 対称性のタイプ: POINT |