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基本情報
| 登録情報 | データベース: PDB / ID: 9md1 | ||||||||||||
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| タイトル | Buspirone-bound serotonin 1A (5-HT1A) receptor-Gz protein complex | ||||||||||||
要素 |
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キーワード | SIGNALING PROTEIN / GPCR Signaling Complex / Serotonin Receptor | ||||||||||||
| 機能・相同性 | 機能・相同性情報regulation of serotonin secretion / Gi/o-coupled serotonin receptor activity / G protein-coupled serotonin receptor signaling pathway / regulation of hormone secretion / regulation of behavior / receptor-receptor interaction / serotonin receptor activity / Serotonin receptors / G protein-coupled serotonin receptor activity / serotonin receptor signaling pathway ...regulation of serotonin secretion / Gi/o-coupled serotonin receptor activity / G protein-coupled serotonin receptor signaling pathway / regulation of hormone secretion / regulation of behavior / receptor-receptor interaction / serotonin receptor activity / Serotonin receptors / G protein-coupled serotonin receptor activity / serotonin receptor signaling pathway / regulation of dopamine metabolic process / neurotransmitter receptor activity / serotonin metabolic process / serotonin binding / gamma-aminobutyric acid signaling pathway / exploration behavior / adult behavior / G protein-coupled receptor signaling pathway, coupled to cyclic nucleotide second messenger / regulation of vasoconstriction / behavioral fear response / adenylate cyclase inhibitor activity / adenylate cyclase-inhibiting serotonin receptor signaling pathway / G protein-coupled serotonin receptor binding / electron transport chain / negative regulation of insulin secretion / G protein-coupled receptor binding / adenylate cyclase-modulating G protein-coupled receptor signaling pathway / G-protein beta/gamma-subunit complex binding / adenylate cyclase-inhibiting G protein-coupled receptor signaling pathway / 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 / nuclear envelope / 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-protein beta-subunit binding / 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 / cell body / GTPase binding / fibroblast proliferation / 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 / chemical synaptic transmission / Ras protein signal transduction / periplasmic space / electron transfer activity / cell population proliferation / Extra-nuclear estrogen signaling / iron ion binding / G protein-coupled receptor signaling pathway / lysosomal membrane / GTPase activity / heme binding / positive regulation of cell population proliferation / synapse / dendrite / GTP binding / protein-containing complex binding / endoplasmic reticulum / signal transduction / extracellular exosome / membrane / metal ion binding / plasma membrane 類似検索 - 分子機能 | ||||||||||||
| 生物種 | 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: 3.03 Å | ||||||||||||
データ登録者 | Warren, A.L. / Zilberg, G. / Wacker, D. | ||||||||||||
| 資金援助 | 米国, 3件
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引用 | ジャーナル: Sci Adv / 年: 2025タイトル: Structural determinants of G protein subtype selectivity at the serotonin receptor 5-HT1A. 著者: Audrey L Warren / Gregory Zilberg / Anwar Abbassi / Alejandro Abraham / Shifan Yang / Daniel Wacker / ![]() 要旨: Activation of the serotonin receptor 5-HT1A has been shown to regulate mood and cognition, making 5-HT1A an important target in the treatment of anxiety, depression, and psychosis. Although the ...Activation of the serotonin receptor 5-HT1A has been shown to regulate mood and cognition, making 5-HT1A an important target in the treatment of anxiety, depression, and psychosis. Although the receptor signals through inhibitory G proteins, more work is necessary to understand differences in transducer coupling and its relation to functional activity. To develop a molecular understanding of the differences underlying transducer coupling and activation, we performed structure-activity relationship studies of 5-HT1A with distinct G proteins. Through a combination of in vitro assays, we identified a potent partial agonist that selectively engages a G protein subtype. We further investigated the differences in G protein engagement at 5-HT1A with cryo-electron microscopy, determining structures of 5-HT1A bound to distinct ligands and G protein subtypes. Combined with subsequent structure-guided mutagenesis and signaling assays, our studies uncover both orthosteric and allosteric determinants of agonist-specific stimulation of distinct transducers. | ||||||||||||
| 履歴 |
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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 | 9md1.cif.gz | 219.5 KB | 表示 | PDBx/mmCIF形式 |
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| PDB形式 | pdb9md1.ent.gz | 165.1 KB | 表示 | PDB形式 |
| PDBx/mmJSON形式 | 9md1.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/md/9md1 ftp://data.pdbj.org/pub/pdb/validation_reports/md/9md1 | HTTPS FTP |
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-関連構造データ
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リンク
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集合体
| 登録構造単位 | ![]()
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| 1 | ![]()
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| 2 | ![]()
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要素
-Guanine nucleotide-binding protein ... , 3種, 3分子 ABG
| #1: タンパク質 | 分子量: 40978.699 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: GNAZ発現宿主: ![]() 参照: UniProt: P19086 |
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| #2: タンパク質 | 分子量: 39418.086 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: ![]() 参照: UniProt: P62873 |
| #4: タンパク質 | 分子量: 8506.765 Da / 分子数: 1 / 由来タイプ: 組換発現 詳細: Guanine nucleotide-binding protein G(I)/G(S)/G(O) subunit gamma-2 with a GSAGSAGSA linker connecting it to the N-terminus of Guanine nucleotide-binding protein G(z) subunit alpha 由来: (組換発現) Homo sapiens (ヒト) / 遺伝子: GNG2発現宿主: ![]() 参照: UniProt: P59768 |
-タンパク質 , 1種, 2分子 CR
| #3: タンパク質 | 分子量: 61375.930 Da / 分子数: 2 / Fragment: residues 1-25 of the 5-HT receptor deleted / Mutation: L125W / 由来タイプ: 組換発現 詳細: N-terminally truncated 5-HT1A receptor with a flag and his tag followed by a TEV cleavage site and BRIL at the N-terminus. 由来: (組換発現) ![]() Homo sapiens (ヒト)遺伝子: cybC, HTR1A, ADRB2RL1, ADRBRL1 発現宿主: ![]() 参照: UniProt: P0ABE7, UniProt: P08908 |
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-非ポリマー , 3種, 12分子 


| #5: 化合物 | 分子量: 385.503 Da / 分子数: 2 / 由来タイプ: 合成 / 式: C21H31N5O2 / タイプ: SUBJECT OF INVESTIGATION #6: 化合物 | ChemComp-CLR / #7: 化合物 | |
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-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 |
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| 分子量 | 実験値: NO | ||||||||||||||||||||||||||||
| 由来(天然) |
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| 由来(組換発現) |
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| 緩衝液 | pH: 7.4 | ||||||||||||||||||||||||||||
| 緩衝液成分 |
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| 試料 | 濃度: 18 mg/ml / 包埋: NO / シャドウイング: NO / 染色: NO / 凍結: YES 詳細: Sample was mono disperse following gel filtration. The sample was immediately concentrated for CryoEM grid preparation. | ||||||||||||||||||||||||||||
| 試料支持 | グリッドの材料: COPPER / グリッドのタイプ: Quantifoil R1.2/1.3 | ||||||||||||||||||||||||||||
| 急速凍結 | 装置: LEICA EM GP / 凍結剤: ETHANE 詳細: Blot force 3 for 3-5 seconds was used and subsequent grids were screened for ice thickness prior to data collection. |
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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): 1800 nm / 最小 デフォーカス(公称値): 500 nm |
| 撮影 | 電子線照射量: 51.33 e/Å2 / フィルム・検出器のモデル: GATAN K3 (6k x 4k) / 実像数: 5849 |
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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: 4465303 | |||||||||||||||||||||||||||||||||
| 対称性 | 点対称性: C1 (非対称) | |||||||||||||||||||||||||||||||||
| 3次元再構成 | 解像度: 3.03 Å / 解像度の算出法: FSC 0.143 CUT-OFF / 粒子像の数: 447065 / 対称性のタイプ: POINT |
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万見について




Homo sapiens (ヒト)

米国, 3件
引用






PDBj































FIELD EMISSION GUN