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データを開く
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基本情報
| 登録情報 | データベース: PDB / ID: 9m55 | ||||||
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| タイトル | Structural insight into determinants of endogenous agonist selectivity of aminergic receptors from octopamine b2 receptor structure | ||||||
要素 |
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キーワード | SIGNALING PROTEIN / GPCR | ||||||
| 機能・相同性 | 機能・相同性情報Olfactory Signaling Pathway / Activation of the phototransduction cascade / G protein-coupled acetylcholine receptor signaling pathway / G beta:gamma signalling through PLC beta / Presynaptic function of Kainate receptors / Thromboxane signalling through TP receptor / Activation of G protein gated Potassium channels / Inhibition of voltage gated Ca2+ channels via Gbeta/gamma subunits / G-protein activation / Glucagon signaling in metabolic regulation ...Olfactory Signaling Pathway / Activation of the phototransduction cascade / G protein-coupled acetylcholine receptor signaling pathway / G beta:gamma signalling through PLC beta / Presynaptic function of Kainate receptors / Thromboxane signalling through TP receptor / Activation of G protein gated Potassium channels / Inhibition of voltage gated Ca2+ channels via Gbeta/gamma subunits / G-protein activation / Glucagon signaling in metabolic regulation / G beta:gamma signalling through CDC42 / Prostacyclin signalling through prostacyclin receptor / G beta:gamma signalling through BTK / Synthesis, secretion, and inactivation of Glucagon-like Peptide-1 (GLP-1) / photoreceptor disc membrane / ADP signalling through P2Y purinoceptor 12 / Sensory perception of sweet, bitter, and umami (glutamate) taste / Glucagon-type ligand receptors / Adrenaline,noradrenaline inhibits insulin secretion / Vasopressin regulates renal water homeostasis via Aquaporins / Glucagon-like Peptide-1 (GLP1) regulates insulin secretion / G alpha (z) signalling events / cellular response to catecholamine stimulus / ADP signalling through P2Y purinoceptor 1 / ADORA2B mediated anti-inflammatory cytokines production / G beta:gamma signalling through PI3Kgamma / adenylate cyclase-activating dopamine receptor signaling pathway / Cooperation of PDCL (PhLP1) and TRiC/CCT in G-protein beta folding / GPER1 signaling / cellular response to prostaglandin E stimulus / heterotrimeric G-protein complex / G alpha (12/13) signalling events / Inactivation, recovery and regulation of the phototransduction cascade / extracellular vesicle / sensory perception of taste / Thrombin signalling through proteinase activated receptors (PARs) / signaling receptor complex adaptor activity / retina development in camera-type eye / GTPase binding / Ca2+ pathway / High laminar flow shear stress activates signaling by PIEZO1 and PECAM1:CDH5:KDR in endothelial cells / G alpha (i) signalling events / G alpha (s) signalling events / phospholipase C-activating G protein-coupled receptor signaling pathway / G alpha (q) signalling events / Ras protein signal transduction / cell population proliferation / Extra-nuclear estrogen signaling / G protein-coupled receptor signaling pathway / lysosomal membrane / GTPase activity / synapse / protein-containing complex binding / signal transduction / extracellular exosome / membrane / plasma membrane / cytoplasm / cytosol 類似検索 - 分子機能 | ||||||
| 生物種 | Ixodes scapularis (ダニ) Homo sapiens (ヒト)![]() | ||||||
| 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: 3.39 Å | ||||||
データ登録者 | Hori, T. / Katsuta, K. / Shirouzu, M. | ||||||
| 資金援助 | 日本, 1件
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引用 | ジャーナル: PNAS Nexus / 年: 2025タイトル: Structural insights into endogenous agonist selectivity of aminergic receptors from the octopamine β receptor. 著者: Tetsuya Hori / Kazushige Katsura / Sayako Miyamoto-Kohno / Tomomi Uchikubo-Kamo / Mayumi Yonemochi / Mikako Shirouzu / ![]() 要旨: Tyrosine-derived amines (TDAs), such as octopamine, noradrenaline, dopamine, and tyramine, are essential neurotransmitters that play diverse roles in various physiological processes. The distinct ...Tyrosine-derived amines (TDAs), such as octopamine, noradrenaline, dopamine, and tyramine, are essential neurotransmitters that play diverse roles in various physiological processes. The distinct receptor selectivity of these structurally similar molecules is vital for their specific functions. However, all these receptors belong to the same subfamily of G-protein-coupled receptors and share high sequence homology within their orthosteric binding sites. The molecular basis of this selectivity remains unclear because of the absence of structural data on octopamine and tyramine receptors. In this study, we present cryo-electron microscopy structures of the deer tick octopamine β receptor (octβR) bound to octopamine or -2,4-dimethylphenyl-'-methylformamidine (DPMF), an acaricidal amitraz metabolite. Octopamine and DPMF formed aromatic interactions with Y307 and F328, residues crucial for octβR activation. The lower potency of other TDAs for octβR stems from the subtle effect of functional groups on both interactions, i.e. the meta-hydroxyl group of noradrenaline and dopamine hinders edge-to-edge interaction with Y307, and the absence of a 1-hydroxyl group in dopamine and tyramine prevents π-hydrogen bonding with F328. These structural insights into octβR selectivity are likely applicable across other TDA receptors, highlighting the pivotal role of residues 6.55 and 7.39. Consequently, the elucidated selection mechanism provides fundamental knowledge of aminergic ligand recognition, a process crucial for neurotransmission and overall organismal function. | ||||||
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構造の表示
| 構造ビューア | 分子: Molmil Jmol/JSmol |
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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 | 9m55.cif.gz | 222.3 KB | 表示 | PDBx/mmCIF形式 |
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| PDB形式 | pdb9m55.ent.gz | 表示 | PDB形式 | |
| PDBx/mmJSON形式 | 9m55.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
| アーカイブディレクトリ | https://data.pdbj.org/pub/pdb/validation_reports/m5/9m55 ftp://data.pdbj.org/pub/pdb/validation_reports/m5/9m55 | HTTPS FTP |
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-関連構造データ
| 関連構造データ | ![]() 9m57C 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 F&H 検索 |
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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
-タンパク質 , 4種, 4分子 ABGR
| #1: タンパク質 | 分子量: 47011.234 Da / 分子数: 1 / 由来タイプ: 組換発現 / 由来: (組換発現) Ixodes scapularis (ダニ) / 発現宿主: ![]() |
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| #2: タンパク質 | 分子量: 39541.113 Da / 分子数: 1 / 由来タイプ: 組換発現 / 由来: (組換発現) Homo sapiens (ヒト) / 遺伝子: GNB1発現宿主: Spodoptera frugiperda granulovirus (ウイルス)参照: UniProt: P62873 |
| #3: タンパク質 | 分子量: 11222.714 Da / 分子数: 1 / 由来タイプ: 組換発現 / 由来: (組換発現) Homo sapiens (ヒト)発現宿主: Spodoptera frugiperda granulovirus (ウイルス) |
| #4: タンパク質 | 分子量: 48186.727 Da / 分子数: 1 / 由来タイプ: 組換発現 / 由来: (組換発現) Ixodes scapularis (ダニ)発現宿主: Spodoptera frugiperda granulovirus (ウイルス) |
-抗体 / 非ポリマー , 2種, 2分子 S
| #5: 抗体 | 分子量: 32919.355 Da / 分子数: 1 / 由来タイプ: 組換発現 / 由来: (組換発現) ![]() ![]() |
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| #6: 化合物 | ChemComp-A1L8N / ~{ 分子量: 162.232 Da / 分子数: 1 / 由来タイプ: 合成 / 式: C10H14N2 / タイプ: SUBJECT OF INVESTIGATION |
-詳細
| 研究の焦点であるリガンドがあるか | Y |
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| 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: GPCR and G-protein complex / タイプ: COMPLEX / Entity ID: #1-#5 / 由来: RECOMBINANT |
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| 由来(天然) | 生物種: Ixodes scapularis (ダニ) |
| 由来(組換発現) | 生物種: Spodoptera frugiperda granulovirus (ウイルス) |
| 緩衝液 | pH: 7.5 |
| 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 |
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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: 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 / 最大 デフォーカス(公称値): 2000 nm / 最小 デフォーカス(公称値): 800 nm |
| 撮影 | 電子線照射量: 50.1 e/Å2 / フィルム・検出器のモデル: GATAN K3 (6k x 4k) |
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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: 3.39 Å / 解像度の算出法: FSC 0.143 CUT-OFF / 粒子像の数: 246183 / 対称性のタイプ: POINT |
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万見について




Ixodes scapularis (ダニ)
Homo sapiens (ヒト)

日本, 1件
引用

PDBj




















Spodoptera frugiperda granulovirus (ウイルス)
FIELD EMISSION GUN