+
データを開く
-
基本情報
| 登録情報 | データベース: PDB / ID: 6m1h | ||||||
|---|---|---|---|---|---|---|---|
| タイトル | CryoEM structure of human PAC1 receptor in complex with maxadilan | ||||||
要素 |
| ||||||
キーワード | PROTEIN BINDING / GPCR | ||||||
| 機能・相同性 | 機能・相同性情報negative regulation of response to reactive oxygen species / development of primary female sexual characteristics / pituitary adenylate cyclase-activating polypeptide receptor activity / vasoactive intestinal polypeptide receptor activity / NGF-independant TRKA activation / positive regulation of small GTPase mediated signal transduction / G protein-coupled peptide receptor activity / neuropeptide binding / positive regulation of inositol phosphate biosynthetic process / adenylate cyclase-activating G protein-coupled bile acid receptor signaling pathway ...negative regulation of response to reactive oxygen species / development of primary female sexual characteristics / pituitary adenylate cyclase-activating polypeptide receptor activity / vasoactive intestinal polypeptide receptor activity / NGF-independant TRKA activation / positive regulation of small GTPase mediated signal transduction / G protein-coupled peptide receptor activity / neuropeptide binding / positive regulation of inositol phosphate biosynthetic process / adenylate cyclase-activating G protein-coupled bile acid receptor signaling pathway / adenylate cyclase-activating serotonin receptor signaling pathway / peptide hormone binding / positive regulation of cAMP/PKA signal transduction / regulation of skeletal muscle contraction / adenylate cyclase binding / positive regulation of calcium ion transport into cytosol / PKA activation in glucagon signalling / hair follicle placode formation / developmental growth / intracellular transport / bicellular tight junction / cAMP/PKA signal transduction / D1 dopamine receptor binding / multicellular organismal response to stress / vascular endothelial cell response to laminar fluid shear stress / renal water homeostasis / Hedgehog 'off' state / activation of adenylate cyclase activity / cellular response to acidic pH / adenylate cyclase-activating adrenergic receptor signaling pathway / cellular response to glucagon stimulus / intracellular glucose homeostasis / positive regulation of insulin secretion involved in cellular response to glucose stimulus / adenylate cyclase activator activity / trans-Golgi network membrane / negative regulation of inflammatory response to antigenic stimulus / response to prostaglandin E / bone development / caveola / platelet aggregation / vasodilation / cognition / adenylate cyclase-modulating G protein-coupled receptor signaling pathway / small GTPase binding / G-protein beta/gamma-subunit complex binding / 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 / Activation of G protein gated Potassium channels / Inhibition of voltage gated Ca2+ channels via Gbeta/gamma subunits / G-protein activation / positive regulation of insulin secretion / G beta:gamma signalling through CDC42 / Prostacyclin signalling through prostacyclin receptor / 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 / photoreceptor disc membrane / Glucagon-type ligand receptors / sensory perception of smell / Sensory perception of sweet, bitter, and umami (glutamate) taste / 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 / ADP signalling through P2Y purinoceptor 1 / ADORA2B mediated anti-inflammatory cytokines production / cellular response to catecholamine stimulus / G beta:gamma signalling through PI3Kgamma / response to estradiol / 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 / G-protein beta-subunit binding / heterotrimeric G-protein complex / G alpha (12/13) signalling events / Inactivation, recovery and regulation of the phototransduction cascade / extracellular vesicle / positive regulation of cold-induced thermogenesis / sensory perception of taste / adenylate cyclase-activating G protein-coupled receptor signaling pathway / Thrombin signalling through proteinase activated receptors (PARs) / signaling receptor complex adaptor activity / signaling receptor activity / retina development in camera-type eye / G protein activity / GTPase binding / fibroblast proliferation / Ca2+ pathway / High laminar flow shear stress activates signaling by PIEZO1 and PECAM1:CDH5:KDR in endothelial cells / spermatogenesis / G alpha (i) signalling events / G alpha (s) signalling events / phospholipase C-activating G protein-coupled receptor signaling pathway / G alpha (q) signalling events 類似検索 - 分子機能 | ||||||
| 生物種 | Homo sapiens (ヒト)![]() Lutzomyia longipalpis (昆虫) | ||||||
| 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: 3.6 Å | ||||||
データ登録者 | Song, X. / Wang, J. / Zhang, D. / Wang, H.W. / Ma, Y. | ||||||
引用 | ジャーナル: Cell Res / 年: 2020タイトル: Cryo-EM structures of PAC1 receptor reveal ligand binding mechanism. 著者: Jia Wang / Xianqiang Song / Dandan Zhang / Xiaoqing Chen / Xun Li / Yaping Sun / Cui Li / Yunpeng Song / Yao Ding / Ruobing Ren / Essa Hu Harrington / Liaoyuan A Hu / Wenge Zhong / Cen Xu / ...著者: Jia Wang / Xianqiang Song / Dandan Zhang / Xiaoqing Chen / Xun Li / Yaping Sun / Cui Li / Yunpeng Song / Yao Ding / Ruobing Ren / Essa Hu Harrington / Liaoyuan A Hu / Wenge Zhong / Cen Xu / Xin Huang / Hong-Wei Wang / Yingli Ma / ![]() 要旨: The pituitary adenylate cyclase-activating polypeptide type I receptor (PAC1R) belongs to the secretin receptor family and is widely distributed in the central neural system and peripheral organs. ...The pituitary adenylate cyclase-activating polypeptide type I receptor (PAC1R) belongs to the secretin receptor family and is widely distributed in the central neural system and peripheral organs. Abnormal activation of the receptor mediates trigeminovascular activation and sensitization, which is highly related to migraine, making PAC1R a potential therapeutic target. Elucidation of PAC1R activation mechanism would benefit discovery of therapeutic drugs for neuronal disorders. PAC1R activity is governed by pituitary adenylate cyclase-activating polypeptide (PACAP), known as a major vasodilator neuropeptide, and maxadilan, a native peptide from the sand fly, which is also capable of activating the receptor with similar potency. These peptide ligands have divergent sequences yet initiate convergent PAC1R activity. It is of interest to understand the mechanism of PAC1R ligand recognition and receptor activity regulation through structural biology. Here we report two near-atomic resolution cryo-EM structures of PAC1R activated by PACAP38 or maxadilan, providing structural insights into two distinct ligand binding modes. The structures illustrate flexibility of the extracellular domain (ECD) for ligands with distinct conformations, where ECD accommodates ligands in different orientations while extracellular loop 1 (ECL1) protrudes to further anchor the ligand bound in the orthosteric site. By structure-guided molecular modeling and mutagenesis, we tested residues in the ligand-binding pockets and identified clusters of residues that are critical for receptor activity. The structures reported here for the first time elucidate the mechanism of specificity and flexibility of ligand recognition and binding for PAC1R, and provide insights toward the design of therapeutic molecules targeting PAC1R. | ||||||
| 履歴 |
|
-
構造の表示
| ムービー |
ムービービューア |
|---|---|
| 構造ビューア | 分子: Molmil Jmol/JSmol |
-
ダウンロードとリンク
-
ダウンロード
| PDBx/mmCIF形式 | 6m1h.cif.gz | 218 KB | 表示 | PDBx/mmCIF形式 |
|---|---|---|---|---|
| PDB形式 | pdb6m1h.ent.gz | 167.7 KB | 表示 | PDB形式 |
| PDBx/mmJSON形式 | 6m1h.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/m1/6m1h ftp://data.pdbj.org/pub/pdb/validation_reports/m1/6m1h | HTTPS FTP |
|---|
-関連構造データ
-
リンク
-
集合体
| 登録構造単位 | ![]()
|
|---|---|
| 1 |
|
-
要素
-タンパク質 , 2種, 2分子 AB
| #1: タンパク質 | 分子量: 47967.223 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: Insect BA phytoplasma (バクテリア) / 参照: UniProt: P41586*PLUS |
|---|---|
| #2: タンパク質 | 分子量: 6881.820 Da / 分子数: 1 / 由来タイプ: 合成 / 由来: (合成) Lutzomyia longipalpis (昆虫) / 参照: UniProt: P30659 |
-Guanine nucleotide-binding protein ... , 3種, 3分子 DEF
| #4: タンパク質 | 分子量: 7861.143 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: GNG2 / 発現宿主: Insect BA phytoplasma (バクテリア) / 参照: UniProt: P59768 |
|---|---|
| #5: タンパク質 | 分子量: 37473.980 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: Insect BA phytoplasma (バクテリア) / 参照: UniProt: P62873 |
| #6: タンパク質 | 分子量: 45683.434 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: Insect BA phytoplasma (バクテリア) / 参照: UniProt: P63092*PLUS |
-抗体 , 1種, 1分子 C
| #3: 抗体 | 分子量: 14714.320 Da / 分子数: 1 / 由来タイプ: 組換発現 / 由来: (組換発現) ![]() ![]() |
|---|
-詳細
| Has protein modification | Y |
|---|
-実験情報
-実験
| 実験 | 手法: 電子顕微鏡法 |
|---|---|
| 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: PACAP38-PAC1R complex / タイプ: COMPLEX / Entity ID: all / 由来: RECOMBINANT |
|---|---|
| 分子量 | 値: 0.15 MDa / 実験値: NO |
| 由来(天然) | 生物種: Homo sapiens (ヒト) |
| 由来(組換発現) | 生物種: ![]() |
| 緩衝液 | pH: 7.5 |
| 試料 | 濃度: 5 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 / 湿度: 100 % |
-
電子顕微鏡撮影
| 実験機器 | ![]() モデル: Titan Krios / 画像提供: FEI Company |
|---|---|
| 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 / Cs: 0 mm / C2レンズ絞り径: 50 µm |
| 撮影 | 電子線照射量: 50 e/Å2 / 検出モード: SUPER-RESOLUTION フィルム・検出器のモデル: GATAN K2 SUMMIT (4k x 4k) |
| 画像スキャン | 横: 3838 / 縦: 3710 |
-
解析
| EMソフトウェア |
| ||||||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| CTF補正 | タイプ: PHASE FLIPPING AND AMPLITUDE CORRECTION | ||||||||||||||||||||
| 対称性 | 点対称性: C1 (非対称) | ||||||||||||||||||||
| 3次元再構成 | 解像度: 3.6 Å / 解像度の算出法: FSC 0.143 CUT-OFF / 粒子像の数: 58451 / アルゴリズム: BACK PROJECTION / クラス平均像の数: 1 / 対称性のタイプ: POINT | ||||||||||||||||||||
| 原子モデル構築 | PDB-ID: 5B16 Accession code: 5B16 / Source name: PDB / タイプ: experimental model |
ムービー
コントローラー
万見について




Homo sapiens (ヒト)
Lutzomyia longipalpis (昆虫)
引用

UCSF Chimera











PDBj






















Insect BA phytoplasma (バクテリア)

