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基本情報
登録情報 | データベース: PDB / ID: 9ba0 | ||||||||||||||||||||||||||||||||||||||||||||||||||||||
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タイトル | Structural mechanism of CB1R binding to peripheral and biased inverse agonists | ||||||||||||||||||||||||||||||||||||||||||||||||||||||
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![]() | SIGNALING PROTEIN/IMMUNE SYSTEM / obesity / membrane protein / nanobody / SIGNALING PROTEIN-IMMUNE SYSTEM complex | ||||||||||||||||||||||||||||||||||||||||||||||||||||||
機能・相同性 | ![]() cannabinoid signaling pathway / regulation of penile erection / negative regulation of dopamine secretion / retrograde trans-synaptic signaling by endocannabinoid / cannabinoid receptor activity / negative regulation of mast cell activation / alpha-1,4-glucan glucosyltransferase (UDP-glucose donor) activity / negative regulation of fatty acid beta-oxidation / negative regulation of serotonin secretion / positive regulation of acute inflammatory response to antigenic stimulus ...cannabinoid signaling pathway / regulation of penile erection / negative regulation of dopamine secretion / retrograde trans-synaptic signaling by endocannabinoid / cannabinoid receptor activity / negative regulation of mast cell activation / alpha-1,4-glucan glucosyltransferase (UDP-glucose donor) activity / negative regulation of fatty acid beta-oxidation / negative regulation of serotonin secretion / positive regulation of acute inflammatory response to antigenic stimulus / regulation of feeding behavior / regulation of presynaptic cytosolic calcium ion concentration / negative regulation of action potential / positive regulation of blood pressure / positive regulation of fever generation / Class A/1 (Rhodopsin-like receptors) / axonal fasciculation / regulation of metabolic process / regulation of synaptic transmission, GABAergic / G protein-coupled receptor signaling pathway, coupled to cyclic nucleotide second messenger / maternal process involved in female pregnancy / regulation of synaptic transmission, glutamatergic / negative regulation of blood pressure / response to nutrient / regulation of insulin secretion / GABA-ergic synapse / response to nicotine / response to cocaine / G protein-coupled receptor activity / positive regulation of neuron projection development / adenylate cyclase-modulating G protein-coupled receptor signaling pathway / memory / adenylate cyclase-activating G protein-coupled receptor signaling pathway / glucose homeostasis / actin cytoskeleton / presynaptic membrane / growth cone / G alpha (i) signalling events / spermatogenesis / response to lipopolysaccharide / response to ethanol / mitochondrial outer membrane / positive regulation of apoptotic process / membrane raft / glutamatergic synapse / identical protein binding / plasma membrane / cytoplasm 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: 3.13 Å | ||||||||||||||||||||||||||||||||||||||||||||||||||||||
![]() | Kumari, P. / Dvoracsko, S. / Enos, M.D. / Ramesh, K. / Lim, D. / Hassan, S.A. / Kunos, G. / Cinar, R. / Iyer, M.R. / Rosenbaum, D.M. | ||||||||||||||||||||||||||||||||||||||||||||||||||||||
資金援助 | ![]()
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![]() | ![]() タイトル: Structural mechanism of CBR binding to peripheral and biased inverse agonists. 著者: Punita Kumari / Szabolcs Dvorácskó / Michael D Enos / Karthik Ramesh / Darrix Lim / Sergio A Hassan / George Kunos / Resat Cinar / Malliga R Iyer / Daniel M Rosenbaum / ![]() ![]() ![]() 要旨: The cannabinoid receptor 1 (CBR) regulates synaptic transmission in the central nervous system, but also has important roles in the peripheral organs controlling cellular metabolism. While earlier ...The cannabinoid receptor 1 (CBR) regulates synaptic transmission in the central nervous system, but also has important roles in the peripheral organs controlling cellular metabolism. While earlier generations of brain penetrant CBR antagonists advanced to the clinic for their effective treatment of obesity, such molecules were ultimately shown to exhibit negative effects on central reward pathways that thwarted their further therapeutic development. The peripherally restricted CBR inverse agonists MRI-1867 and MRI-1891 represent a new generation of compounds that retain the metabolic benefits of CBR inhibitors while sparing the negative psychiatric effects. To understand the mechanism of binding and inhibition of CBR by peripherally restricted antagonists, we developed a nanobody/fusion protein strategy for high-resolution cryo-EM structure determination of the GPCR inactive state, and used this method to determine structures of CBR bound to either MRI-1867 or MRI-1891. These structures reveal how these compounds retain high affinity and specificity for CBR's hydrophobic orthosteric site despite incorporating polar functionalities that lead to peripheral restriction. Further, the structure of the MRI-1891 complex along with accompanying molecular dynamics simulations shows how differential engagement with transmembrane helices and the proximal N-terminus can propagate through the receptor to contribute to biased inhibition of β-arrestin signaling. | ||||||||||||||||||||||||||||||||||||||||||||||||||||||
履歴 |
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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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ダウンロード
PDBx/mmCIF形式 | ![]() | 124.2 KB | 表示 | ![]() |
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PDB形式 | ![]() | 表示 | ![]() | |
PDBx/mmJSON形式 | ![]() | ツリー表示 | ![]() | |
その他 | ![]() |
-検証レポート
文書・要旨 | ![]() | 1.2 MB | 表示 | ![]() |
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文書・詳細版 | ![]() | 1.2 MB | 表示 | |
XML形式データ | ![]() | 29.7 KB | 表示 | |
CIF形式データ | ![]() | 44.1 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 | ![]() 44394MC ![]() 9b9yC ![]() 9b9zC 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
#1: タンパク質 | 分子量: 60728.086 Da / 分子数: 1 / 由来タイプ: 組換発現 由来: (組換発現) ![]() ![]() ![]() 遺伝子: CNR1, CNR, PAB2292 / 株: GE5 / Orsay 発現宿主: ![]() ![]() 参照: UniProt: P21554, UniProt: Q9V2J8 |
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#2: 抗体 | 分子量: 14061.530 Da / 分子数: 1 / 由来タイプ: 組換発現 / 由来: (組換発現) ![]() ![]() ![]() ![]() |
#3: 化合物 | ChemComp-A1AKN / 分子量: 591.004 Da / 分子数: 1 / 由来タイプ: 合成 / 式: C26H22ClF3N6O3S |
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: CB1-Nanobody complex / タイプ: COMPLEX / Entity ID: #1-#2 / 由来: MULTIPLE SOURCES | ||||||||||||||||||||||||||||||
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分子量 | 実験値: NO | ||||||||||||||||||||||||||||||
由来(天然) | 生物種: ![]() | ||||||||||||||||||||||||||||||
由来(組換発現) | 生物種: ![]() ![]() | ||||||||||||||||||||||||||||||
緩衝液 | pH: 7.5 | ||||||||||||||||||||||||||||||
緩衝液成分 |
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試料 | 濃度: 2.75 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 |
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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: TFS 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): 2400 nm / 最小 デフォーカス(公称値): 1400 nm |
撮影 | 電子線照射量: 1 e/Å2 フィルム・検出器のモデル: GATAN K3 BIOQUANTUM (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: PHASE FLIPPING AND AMPLITUDE CORRECTION | ||||||||||||||||||||||||
粒子像の選択 | 選択した粒子像数: 1920000 | ||||||||||||||||||||||||
3次元再構成 | 解像度: 3.13 Å / 解像度の算出法: FSC 0.143 CUT-OFF / 粒子像の数: 99842 / 対称性のタイプ: POINT | ||||||||||||||||||||||||
拘束条件 |
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