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基本情報
登録情報 | データベース: PDB / ID: 9bkj | |||||||||||||||
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タイトル | Cholecystokinin 1 receptor (CCK1R) Y140A mutant, Gq chimera (mGsqi) complex | |||||||||||||||
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![]() | MEMBRANE PROTEIN / cholecystokinin / GPCR / cholesterol / mutant | |||||||||||||||
機能・相同性 | ![]() cholecystokinin receptor activity / cholecystokinin signaling pathway / regulation of hormone secretion / neuropeptide hormone activity / eating behavior / peptide hormone receptor binding / forebrain development / peptide hormone binding / PKA activation in glucagon signalling / developmental growth ...cholecystokinin receptor activity / cholecystokinin signaling pathway / regulation of hormone secretion / neuropeptide hormone activity / eating behavior / peptide hormone receptor binding / forebrain development / peptide hormone binding / PKA activation in glucagon signalling / developmental growth / hair follicle placode formation / D1 dopamine receptor binding / intracellular transport / vascular endothelial cell response to laminar fluid shear stress / adenylate cyclase inhibitor activity / renal water homeostasis / activation of adenylate cyclase activity / cellular response to hormone stimulus / Hedgehog 'off' state / positive regulation of protein localization to cell cortex / T cell migration / Adenylate cyclase inhibitory pathway / digestion / D2 dopamine receptor binding / response to prostaglandin E / adenylate cyclase-activating adrenergic receptor signaling pathway / adenylate cyclase regulator activity / G protein-coupled serotonin receptor binding / adenylate cyclase-inhibiting serotonin receptor signaling pathway / cellular response to glucagon stimulus / regulation of insulin secretion / cellular response to forskolin / axonogenesis / regulation of mitotic spindle organization / Peptide ligand-binding receptors / adenylate cyclase activator activity / trans-Golgi network membrane / Regulation of insulin secretion / negative regulation of inflammatory response to antigenic stimulus / positive regulation of cholesterol biosynthetic process / negative regulation of insulin secretion / G protein-coupled receptor binding / response to peptide hormone / adenylate cyclase-inhibiting G protein-coupled receptor signaling pathway / hormone activity / bone development / adenylate cyclase-modulating G protein-coupled receptor signaling pathway / centriolar satellite / platelet aggregation / G-protein beta/gamma-subunit complex binding / cognition / Olfactory Signaling Pathway / Activation of the phototransduction cascade / 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 / adenylate cyclase-activating G protein-coupled receptor signaling pathway / neuron migration / Prostacyclin signalling through prostacyclin receptor / G beta:gamma signalling through CDC42 / Glucagon signaling in metabolic regulation / G beta:gamma signalling through BTK / Synthesis, secretion, and inactivation of Glucagon-like Peptide-1 (GLP-1) / ADP signalling through P2Y purinoceptor 12 / Sensory perception of sweet, bitter, and umami (glutamate) taste / photoreceptor disc membrane / Glucagon-type ligand receptors / Adrenaline,noradrenaline inhibits insulin secretion / Vasopressin regulates renal water homeostasis via Aquaporins / GDP binding / Glucagon-like Peptide-1 (GLP1) regulates insulin secretion / G alpha (z) signalling events / ADP signalling through P2Y purinoceptor 1 / cellular response to catecholamine stimulus / ADORA2B mediated anti-inflammatory cytokines production / G beta:gamma signalling through PI3Kgamma / sensory perception of smell / Cooperation of PDCL (PhLP1) and TRiC/CCT in G-protein beta folding / adenylate cyclase-activating dopamine receptor signaling pathway / GPER1 signaling / Inactivation, recovery and regulation of the phototransduction cascade / cellular response to prostaglandin E stimulus / G-protein beta-subunit binding / heterotrimeric G-protein complex / G alpha (12/13) signalling events / sensory perception of taste / extracellular vesicle / signaling receptor complex adaptor activity / Thrombin signalling through proteinase activated receptors (PARs) / positive regulation of cold-induced thermogenesis / retina development in camera-type eye / G protein activity / GTPase binding / Ca2+ pathway / midbody / fibroblast proliferation 類似検索 - 分子機能 | |||||||||||||||
生物種 | ![]() | |||||||||||||||
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: 2.59 Å | |||||||||||||||
![]() | Cary, B.P. / Harikumar, K.G. / Zhao, P. / Desai, A.J. / Mobbs, J.M. / Toufaily, C. / Furness, S.G.B. / Christopoulos, A. / Belousoff, M.J. / Wootten, D. ...Cary, B.P. / Harikumar, K.G. / Zhao, P. / Desai, A.J. / Mobbs, J.M. / Toufaily, C. / Furness, S.G.B. / Christopoulos, A. / Belousoff, M.J. / Wootten, D. / Sexton, P.M. / Miller, L.J. | |||||||||||||||
資金援助 | ![]() ![]()
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![]() | ![]() タイトル: Cholesterol-dependent dynamic changes in the conformation of the type 1 cholecystokinin receptor affect ligand binding and G protein coupling. 著者: Kaleeckal G Harikumar / Peishen Zhao / Brian P Cary / Xiaomeng Xu / Aditya J Desai / Maoqing Dong / Jesse I Mobbs / Chirine Toufaily / Sebastian G B Furness / Arthur Christopoulos / Matthew J ...著者: Kaleeckal G Harikumar / Peishen Zhao / Brian P Cary / Xiaomeng Xu / Aditya J Desai / Maoqing Dong / Jesse I Mobbs / Chirine Toufaily / Sebastian G B Furness / Arthur Christopoulos / Matthew J Belousoff / Denise Wootten / Patrick M Sexton / Laurence J Miller / ![]() ![]() 要旨: Development of optimal therapeutics for disease states that can be associated with increased membrane cholesterol requires better molecular understanding of lipid modulation of the drug target. Type ...Development of optimal therapeutics for disease states that can be associated with increased membrane cholesterol requires better molecular understanding of lipid modulation of the drug target. Type 1 cholecystokinin receptor (CCK1R) agonist actions are affected by increased membrane cholesterol, enhancing ligand binding and reducing calcium signaling, while agonist actions of the closely related CCK2R are not. In this work, we identified a set of chimeric human CCK1R/CCK2R mutations that exchange the cholesterol sensitivity of these 2 receptors, providing powerful tools when expressed in CHO and HEK-293 model cell lines to explore mechanisms. Static, low energy, high-resolution structures of the mutant CCK1R constructs, stabilized in complex with G protein, were not substantially different, suggesting that alterations to receptor dynamics were key to altered function. We reveal that cholesterol-dependent dynamic changes in the conformation of the helical bundle of CCK receptors affects both ligand binding at the extracellular surface and G protein coupling at the cytosolic surface, as well as their interrelationships involved in stimulus-response coupling. This provides an ideal setting for potential allosteric modulators to correct the negative impact of membrane cholesterol on CCK1R. | |||||||||||||||
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構造の表示
構造ビューア | 分子: ![]() ![]() |
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ダウンロードとリンク
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PDBx/mmCIF形式 | ![]() | 168.9 KB | 表示 | ![]() |
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PDB形式 | ![]() | 121.8 KB | 表示 | ![]() |
PDBx/mmJSON形式 | ![]() | ツリー表示 | ![]() | |
その他 | ![]() |
-検証レポート
文書・要旨 | ![]() | 1.3 MB | 表示 | ![]() |
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文書・詳細版 | ![]() | 1.3 MB | 表示 | |
XML形式データ | ![]() | 39.5 KB | 表示 | |
CIF形式データ | ![]() | 58.2 KB | 表示 | |
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 | ![]() 44642MC ![]() 9bkkC 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 ( |
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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
-Guanine nucleotide-binding protein ... , 3種, 3分子 BGA
#1: タンパク質 | 分子量: 37413.863 Da / 分子数: 1 / 由来タイプ: 組換発現 / 由来: (組換発現) ![]() ![]() |
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#2: タンパク質 | 分子量: 6375.332 Da / 分子数: 1 / 由来タイプ: 組換発現 / 由来: (組換発現) ![]() ![]() |
#5: タンパク質 | 分子量: 29144.971 Da / 分子数: 1 / 由来タイプ: 組換発現 詳細: Guanine nucleotide-binding protein G(i) subunit alpha-1,Guanine nucleotide-binding protein G(s) subunit alpha isoforms short,with certain residues mutated to match Guanine nucleotide-binding protein G(q) subunit 由来: (組換発現) ![]() ![]() |
-タンパク質・ペプチド / タンパク質 / 非ポリマー , 3種, 3分子 PR

#3: タンパク質・ペプチド | 分子量: 1144.255 Da / 分子数: 1 / 由来タイプ: 合成 / 由来: (合成) ![]() |
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#4: タンパク質 | 分子量: 47662.770 Da / 分子数: 1 / Mutation: Y140A / 由来タイプ: 組換発現 / 由来: (組換発現) ![]() ![]() |
#6: 化合物 | ChemComp-NH2 / |
-詳細
研究の焦点であるリガンドがあるか | Y |
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-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: Complex of CCK1R (Y140A mutant) bound to miniGs (Gq, Gi chimera), G-beta1, G-gamma-2 and CCK8s. タイプ: COMPLEX 詳細: Single-chain fragment variable 16 (ScFv16) was included in the complex but left unmodeled. Entity ID: #1-#5 / 由来: RECOMBINANT |
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分子量 | 値: 0.150 MDa / 実験値: NO |
由来(天然) | 生物種: ![]() |
由来(組換発現) | 生物種: ![]() |
緩衝液 | pH: 7.4 |
試料 | 濃度: 5 mg/ml / 包埋: NO / シャドウイング: NO / 染色: NO / 凍結: YES |
試料支持 | 詳細: 20 mA, negative polarity / グリッドの材料: GOLD / グリッドのタイプ: UltrAuFoil R1.2/1.3 |
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): 1200 nm / 最小 デフォーカス(公称値): 600 nm |
試料ホルダ | 凍結剤: NITROGEN |
撮影 | 電子線照射量: 60 e/Å2 / フィルム・検出器のモデル: GATAN K3 (6k x 4k) / 撮影したグリッド数: 1 / 実像数: 5884 |
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解析
EMソフトウェア |
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CTF補正 | タイプ: PHASE FLIPPING AND AMPLITUDE CORRECTION | ||||||||||||||||||||||||||||||||
粒子像の選択 | 選択した粒子像数: 3580372 | ||||||||||||||||||||||||||||||||
対称性 | 点対称性: C1 (非対称) | ||||||||||||||||||||||||||||||||
3次元再構成 | 解像度: 2.59 Å / 解像度の算出法: FSC 0.143 CUT-OFF / 粒子像の数: 279231 / 対称性のタイプ: POINT | ||||||||||||||||||||||||||||||||
原子モデル構築 | PDB-ID: 7MBY Accession code: 7MBY / Source name: PDB / タイプ: experimental model | ||||||||||||||||||||||||||||||||
拘束条件 |
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