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基本情報
登録情報 | データベース: PDB / ID: 6lpb | ||||||
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タイトル | Cryo-EM structure of the human PAC1 receptor coupled to an engineered heterotrimeric G protein | ||||||
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![]() | SIGNALING PROTEIN/HORMONE / CLASS B GPCR / PACAP / PAC1R / SIGNALING PROTEIN-HORMONE COMPLEX | ||||||
機能・相同性 | ![]() negative regulation of response to reactive oxygen species / development of primary female sexual characteristics / pituitary adenylate cyclase activating polypeptide activity / type 1 vasoactive intestinal polypeptide receptor binding / type 2 vasoactive intestinal polypeptide receptor binding / pituitary adenylate cyclase-activating polypeptide receptor activity / vasoactive intestinal polypeptide receptor activity / positive regulation of growth hormone secretion / positive regulation of chemokine (C-C motif) ligand 5 production / NGF-independant TRKA activation ...negative regulation of response to reactive oxygen species / development of primary female sexual characteristics / pituitary adenylate cyclase activating polypeptide activity / type 1 vasoactive intestinal polypeptide receptor binding / type 2 vasoactive intestinal polypeptide receptor binding / pituitary adenylate cyclase-activating polypeptide receptor activity / vasoactive intestinal polypeptide receptor activity / positive regulation of growth hormone secretion / positive regulation of chemokine (C-C motif) ligand 5 production / NGF-independant TRKA activation / neuropeptide hormone activity / regulation of G protein-coupled receptor signaling pathway / G-protein activation / Activation of the phototransduction cascade / Glucagon-type ligand receptors / Thromboxane signalling through TP receptor / Sensory perception of sweet, bitter, and umami (glutamate) taste / G beta:gamma signalling through PI3Kgamma / G beta:gamma signalling through CDC42 / Cooperation of PDCL (PhLP1) and TRiC/CCT in G-protein beta folding / neuropeptide binding / Activation of G protein gated Potassium channels / Inhibition of voltage gated Ca2+ channels via Gbeta/gamma subunits / Ca2+ pathway / positive regulation of small GTPase mediated signal transduction / G alpha (z) signalling events / High laminar flow shear stress activates signaling by PIEZO1 and PECAM1:CDH5:KDR in endothelial cells / Glucagon-like Peptide-1 (GLP1) regulates insulin secretion / Vasopressin regulates renal water homeostasis via Aquaporins / G protein-coupled peptide receptor activity / Adrenaline,noradrenaline inhibits insulin secretion / ADP signalling through P2Y purinoceptor 12 / G alpha (q) signalling events / G alpha (i) signalling events / Thrombin signalling through proteinase activated receptors (PARs) / insulin secretion / Activation of G protein gated Potassium channels / G-protein activation / G beta:gamma signalling through PI3Kgamma / Prostacyclin signalling through prostacyclin receptor / G beta:gamma signalling through PLC beta / ADP signalling through P2Y purinoceptor 1 / Thromboxane signalling through TP receptor / Presynaptic function of Kainate receptors / G beta:gamma signalling through CDC42 / Inhibition of voltage gated Ca2+ channels via Gbeta/gamma subunits / G alpha (12/13) signalling events / Glucagon-type ligand receptors / G beta:gamma signalling through BTK / ADP signalling through P2Y purinoceptor 12 / Adrenaline,noradrenaline inhibits insulin secretion / Cooperation of PDCL (PhLP1) and TRiC/CCT in G-protein beta folding / Ca2+ pathway / Thrombin signalling through proteinase activated receptors (PARs) / G alpha (z) signalling events / Extra-nuclear estrogen signaling / photoreceptor outer segment membrane / G alpha (s) signalling events / positive regulation of inositol phosphate biosynthetic process / G alpha (q) signalling events / spectrin binding / peptide hormone receptor binding / G alpha (i) signalling events / Glucagon-like Peptide-1 (GLP1) regulates insulin secretion / High laminar flow shear stress activates signaling by PIEZO1 and PECAM1:CDH5:KDR in endothelial cells / Vasopressin regulates renal water homeostasis via Aquaporins / alkylglycerophosphoethanolamine phosphodiesterase activity / positive regulation of calcium ion transport into cytosol / negative regulation of cell cycle / positive regulation of cAMP/PKA signal transduction / peptide hormone binding / positive regulation of protein kinase activity / cAMP/PKA signal transduction / adenylate cyclase binding / PKA activation in glucagon signalling / positive regulation of GTPase activity / developmental growth / hair follicle placode formation / photoreceptor outer segment / bicellular tight junction / neuropeptide signaling pathway / D1 dopamine receptor binding / multicellular organismal response to stress / intracellular transport / vascular endothelial cell response to laminar fluid shear stress / renal water homeostasis / activation of adenylate cyclase activity / Hedgehog 'off' state / adenylate cyclase-activating adrenergic receptor signaling pathway / photoreceptor inner segment / cardiac muscle cell apoptotic process / cellular response to glucagon stimulus / regulation of insulin secretion / adenylate cyclase activator activity / trans-Golgi network membrane / negative regulation of inflammatory response to antigenic stimulus / female pregnancy / bone development / caveola / adenylate cyclase-modulating G protein-coupled receptor signaling pathway 類似検索 - 分子機能 | ||||||
生物種 | ![]() ![]() ![]() unidentified (未定義) ![]() ![]() | ||||||
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: 3.9 Å | ||||||
![]() | Kobayashi, K. / Shihoya, W. / Nishizawa, T. / Nureki, O. | ||||||
![]() | ![]() タイトル: Cryo-EM structure of the human PAC1 receptor coupled to an engineered heterotrimeric G protein. 著者: Kazuhiro Kobayashi / Wataru Shihoya / Tomohiro Nishizawa / Francois Marie Ngako Kadji / Junken Aoki / Asuka Inoue / Osamu Nureki / ![]() 要旨: Pituitary adenylate cyclase-activating polypeptide (PACAP) is a pleiotropic neuropeptide hormone. The PACAP receptor PAC1R, which belongs to the class B G-protein-coupled receptors (GPCRs), is a drug ...Pituitary adenylate cyclase-activating polypeptide (PACAP) is a pleiotropic neuropeptide hormone. The PACAP receptor PAC1R, which belongs to the class B G-protein-coupled receptors (GPCRs), is a drug target for mental disorders and dry eye syndrome. Here, we present a cryo-EM structure of human PAC1R bound to PACAP and an engineered G heterotrimer. The structure revealed that transmembrane helix TM1 plays an essential role in PACAP recognition. The extracellular domain (ECD) of PAC1R tilts by ~40° compared with that of the glucagon-like peptide-1 receptor (GLP-1R) and thus does not cover the peptide ligand. A functional analysis demonstrated that the PAC1R ECD functions as an affinity trap and is not required for receptor activation, whereas the GLP-1R ECD plays an indispensable role in receptor activation, illuminating the functional diversity of the ECDs in class B GPCRs. Our structural information will facilitate the design and improvement of better PAC1R agonists for clinical applications. | ||||||
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構造ビューア | 分子: ![]() ![]() |
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PDBx/mmCIF形式 | ![]() | 210.7 KB | 表示 | ![]() |
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PDB形式 | ![]() | 163.3 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 | ![]() | 1.1 MB | 表示 | ![]() |
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文書・詳細版 | ![]() | 1.1 MB | 表示 | |
XML形式データ | ![]() | 40.2 KB | 表示 | |
CIF形式データ | ![]() | 62 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 | ![]() 0940MC 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 | |
電子顕微鏡画像生データ | ![]() Data size: 3.5 TB Data #1: Unaligned movies for the human PAC1 receptor coupled to Gs (dimer) [micrographs - multiframe]) |
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リンク
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集合体
登録構造単位 | ![]()
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対称性 | 点対称性: (シェーンフリース記号: C2 (2回回転対称)) | ||||||||||||
非結晶学的対称性 (NCS) | NCS oper:
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要素
-Pituitary adenylate cyclase-activating ... , 2種, 2分子 PR
#1: タンパク質・ペプチド | 分子量: 4547.336 Da / 分子数: 1 / 由来タイプ: 合成 / 由来: (合成) ![]() |
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#2: タンパク質 | 分子量: 46675.520 Da / 分子数: 1 / 由来タイプ: 組換発現 / 由来: (組換発現) ![]() ![]() |
-Guanine nucleotide-binding protein ... , 3種, 3分子 BAG
#3: タンパク質 | 分子量: 38744.371 Da / 分子数: 1 / 由来タイプ: 組換発現 / 由来: (組換発現) ![]() ![]() 発現宿主: ![]() ![]() 参照: UniProt: P54311 |
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#4: タンパク質 | 分子量: 28964.734 Da / 分子数: 1 / 由来タイプ: 組換発現 / 由来: (組換発現) ![]() ![]() ![]() |
#6: タンパク質 | 分子量: 7547.685 Da / 分子数: 1 / 由来タイプ: 組換発現 / 由来: (組換発現) ![]() ![]() 発現宿主: ![]() ![]() 参照: UniProt: P63212 |
-抗体 , 1種, 1分子 N
#5: 抗体 | 分子量: 15015.728 Da / 分子数: 1 / 由来タイプ: 組換発現 / 由来: (組換発現) unidentified (未定義) / 発現宿主: ![]() ![]() |
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-詳細
Has protein modification | 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: PAC1R-Gs trimer / タイプ: COMPLEX / Entity ID: all / 由来: RECOMBINANT |
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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: 7.4 |
試料 | 包埋: NO / シャドウイング: NO / 染色: NO / 凍結: YES |
試料支持 | グリッドの材料: COPPER/RHODIUM / グリッドのサイズ: 300 divisions/in. / グリッドのタイプ: Quantifoil 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 |
撮影 | 電子線照射量: 64 e/Å2 フィルム・検出器のモデル: FEI FALCON III (4k x 4k) |
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解析
ソフトウェア | 名称: PHENIX / バージョン: 1.14_3260: / 分類: 精密化 |
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EMソフトウェア | 名称: PHENIX / バージョン: 1.14 / カテゴリ: モデル精密化 / 詳細: phenix.real_space_refine |
CTF補正 | タイプ: PHASE FLIPPING AND AMPLITUDE CORRECTION |
対称性 | 点対称性: C2 (2回回転対称) |
3次元再構成 | 解像度: 3.9 Å / 解像度の算出法: FSC 0.143 CUT-OFF / 粒子像の数: 132808 / 対称性のタイプ: POINT |
原子モデル構築 | プロトコル: OTHER |
原子モデル構築 | PDB-ID: 5VAI Accession code: 5VAI / Source name: PDB / タイプ: experimental model |