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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: 9u3u | |||||||||||||||||||||||||||
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| タイトル | Cryo-EM structure of human AC9_delC | |||||||||||||||||||||||||||
要素 | Adenylate cyclase type 9,Protein M2-1 | |||||||||||||||||||||||||||
キーワード | MEMBRANE PROTEIN / enzyme | |||||||||||||||||||||||||||
| 機能・相同性 | 機能・相同性情報Adenylate cyclase activating pathway / regulation of viral transcription / symbiont-mediated activation of host NF-kappaB cascade / adenylate cyclase / adenylate cyclase activity / cAMP biosynthetic process / PKA activation / viral transcription / PKA activation in glucagon signalling / vascular endothelial cell response to laminar fluid shear stress ...Adenylate cyclase activating pathway / regulation of viral transcription / symbiont-mediated activation of host NF-kappaB cascade / adenylate cyclase / adenylate cyclase activity / cAMP biosynthetic process / PKA activation / viral transcription / PKA activation in glucagon signalling / vascular endothelial cell response to laminar fluid shear stress / renal water homeostasis / Hedgehog 'off' state / adenylate cyclase-activating adrenergic receptor signaling pathway / Adenylate cyclase inhibitory pathway / cellular response to glucagon stimulus / FCGR3A-mediated IL10 synthesis / bioluminescence / transcription antitermination / generation of precursor metabolites and energy / virion component / Glucagon signaling in metabolic regulation / Vasopressin regulates renal water homeostasis via Aquaporins / G alpha (z) signalling events / ADORA2B mediated anti-inflammatory cytokines production / GPER1 signaling / adenylate cyclase-activating G protein-coupled receptor signaling pathway / High laminar flow shear stress activates signaling by PIEZO1 and PECAM1:CDH5:KDR in endothelial cells / G alpha (i) signalling events / in utero embryonic development / G alpha (s) signalling events / host cell cytoplasm / intracellular signal transduction / cilium / ciliary basal body / axon / dendrite / host cell nucleus / structural molecule activity / signal transduction / RNA binding / zinc ion binding / ATP binding / membrane / metal ion binding / plasma membrane / cytosol 類似検索 - 分子機能 | |||||||||||||||||||||||||||
| 生物種 | Homo sapiens (ヒト) Human respiratory syncytial virus (ウイルス) | |||||||||||||||||||||||||||
| 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: 3.5 Å | |||||||||||||||||||||||||||
データ登録者 | Suzuki, S. / Nomura, R. / Suzuki, H. / Nishikawa, K. / Fujiyoshi, Y. | |||||||||||||||||||||||||||
| 資金援助 | 日本, 2件
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引用 | ジャーナル: J Struct Biol / 年: 2025タイトル: Structural insights into human adenylyl cyclase 9 in complex with Gαs by cryo-EM. 著者: Risa Nomura / Shota Suzuki / Koki Nishikawa / Hiroshi Suzuki / Yoshinori Fujiyoshi / ![]() 要旨: Adenylyl cyclase 9 (AC9) regulates many physiologic functions through the production of cAMP, an important second messenger that regulates downstream effectors. The activation of AC9 is highly ...Adenylyl cyclase 9 (AC9) regulates many physiologic functions through the production of cAMP, an important second messenger that regulates downstream effectors. The activation of AC9 is highly regulated by GPCR signaling. For example, AC9 is activated by the binding of Gαs, which, in turn, is activated by Gs-driven GPCRs. The structure of bovine AC9 (bAC9) was reported in 2019 using single-particle cryo-electron microscopy (cryo-EM). The structure of human AC9 (hAC9), however, has not been reported to date despite its potential benefit for drug development. Here, we analyzed the structures of hAC9 and hAC9 in complex with Gαs (hAC9-Gαs) using single-particle cryo-EM. The soluble domain of AC9-Gαs, the transmembrane (TM) domain of AC9-Gαs, and AC9 alone were analyzed at resolutions of 2.7 Å, 3.4 Å, and 3.2 Å, respectively. The results revealed three key aspects of the activation mechanism of hAC9 and its cAMP-generating function. First, a conformational change of the soluble domain was observed upon Gαs binding, resulting in a widely open catalytic site. Second, we analyzed the exact position of the C-terminus occluding the catalytic site in the hAC9-Gαs complex. Finally, we unexpectedly identified an elongated density suggestive of a single acyl chain in the TM domain. Consistent with recent reports on the allosteric regulation of AC by lipids, this finding suggests that the TM domain could serve as a potential drug target.These structural findings enhance our understanding of the structure and function of AC9 and other ACs and will provide a foundation for future AC-target drug discovery. | |||||||||||||||||||||||||||
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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 | 9u3u.cif.gz | 176.6 KB | 表示 | PDBx/mmCIF形式 |
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| PDB形式 | pdb9u3u.ent.gz | 127.4 KB | 表示 | PDB形式 |
| PDBx/mmJSON形式 | 9u3u.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/u3/9u3u ftp://data.pdbj.org/pub/pdb/validation_reports/u3/9u3u | HTTPS FTP |
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-関連構造データ
| 関連構造データ | ![]() 63827MC ![]() 9u3pC ![]() 9u3qC ![]() 9u3rC ![]() 9u3sC ![]() 9u3vC 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
| #1: タンパク質 | 分子量: 181560.188 Da / 分子数: 1 / 由来タイプ: 組換発現 由来: (組換発現) Homo sapiens (ヒト), (組換発現) Human respiratory syncytial virus (ウイルス)遺伝子: ADCY9, KIAA0520, M2-1mGFP / 発現宿主: Homo sapiens (ヒト)参照: UniProt: O60503, UniProt: A0A1S5SHT2, adenylate cyclase |
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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: hADCY9 / 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: Homo sapiens (ヒト) |
| 由来(組換発現) | 生物種: Homo sapiens (ヒト) |
| 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 |
| 急速凍結 | 凍結剤: ETHANE |
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電子顕微鏡撮影
| 顕微鏡 | モデル: JEOL CRYO ARM 300 |
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| 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): 1500 nm / 最小 デフォーカス(公称値): 800 nm |
| 撮影 | 電子線照射量: 50 e/Å2 / フィルム・検出器のモデル: GATAN K3 (6k x 4k) |
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解析
| EMソフトウェア | 名称: PHENIX / バージョン: 1.20.1_4487 / カテゴリ: モデル精密化 | ||||||||||||||||||||||||
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| CTF補正 | タイプ: PHASE FLIPPING ONLY | ||||||||||||||||||||||||
| 3次元再構成 | 解像度: 3.5 Å / 解像度の算出法: FSC 0.143 CUT-OFF / 粒子像の数: 132622 / 対称性のタイプ: POINT | ||||||||||||||||||||||||
| 精密化 | 最高解像度: 3.5 Å 立体化学のターゲット値: REAL-SPACE (WEIGHTED MAP SUM AT ATOM CENTERS) | ||||||||||||||||||||||||
| 拘束条件 |
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万見について




Homo sapiens (ヒト)
Human respiratory syncytial virus (ウイルス)
日本, 2件
引用










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FIELD EMISSION GUN