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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: 9izd | |||||||||||||||||||||
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| タイトル | Cryo-EM structure of human HCAR1-Gi complex with CHBA | |||||||||||||||||||||
要素 |
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キーワード | MEMBRANE PROTEIN / complex | |||||||||||||||||||||
| 機能・相同性 | 機能・相同性情報Hydroxycarboxylic acid-binding receptors / negative regulation of lipid catabolic process / adenylate cyclase inhibitor activity / positive regulation of protein localization to cell cortex / Adenylate cyclase inhibitory pathway / T cell migration / D2 dopamine receptor binding / response to prostaglandin E / adenylate cyclase regulator activity / G protein-coupled serotonin receptor binding ...Hydroxycarboxylic acid-binding receptors / negative regulation of lipid catabolic process / adenylate cyclase inhibitor activity / positive regulation of protein localization to cell cortex / Adenylate cyclase inhibitory pathway / T cell migration / D2 dopamine receptor binding / response to prostaglandin E / adenylate cyclase regulator activity / G protein-coupled serotonin receptor binding / adenylate cyclase-inhibiting serotonin receptor signaling pathway / cellular response to forskolin / regulation of mitotic spindle organization / Regulation of insulin secretion / positive regulation of cholesterol biosynthetic process / negative regulation of insulin secretion / G protein-coupled receptor binding / G protein-coupled receptor activity / response to peptide hormone / adenylate cyclase-inhibiting G protein-coupled receptor signaling pathway / adenylate cyclase-modulating G protein-coupled receptor signaling pathway / G-protein beta/gamma-subunit complex binding / centriolar satellite / 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 / G-protein activation / Activation of G protein gated Potassium channels / Inhibition of voltage gated Ca2+ channels via Gbeta/gamma subunits / Prostacyclin signalling through prostacyclin receptor / G beta:gamma signalling through CDC42 / 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 / 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 / GDP binding / 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 / Cooperation of PDCL (PhLP1) and TRiC/CCT in G-protein beta folding / adenylate cyclase-activating dopamine receptor signaling pathway / GPER1 signaling / Inactivation, recovery and regulation of the phototransduction cascade / cellular response to prostaglandin E stimulus / G-protein beta-subunit binding / heterotrimeric G-protein complex / G alpha (12/13) signalling events / sensory perception of taste / extracellular vesicle / signaling receptor complex adaptor activity / Thrombin signalling through proteinase activated receptors (PARs) / retina development in camera-type eye / G protein activity / GTPase binding / Ca2+ pathway / fibroblast proliferation / midbody / High laminar flow shear stress activates signaling by PIEZO1 and PECAM1:CDH5:KDR in endothelial cells / cell cortex / G alpha (i) signalling events / G alpha (s) signalling events / phospholipase C-activating G protein-coupled receptor signaling pathway / G alpha (q) signalling events / 加水分解酵素; 酸無水物に作用; GTPに作用・細胞または細胞小器官の運動に関与 / Ras protein signal transduction / Extra-nuclear estrogen signaling / cell population proliferation / ciliary basal body / G protein-coupled receptor signaling pathway / lysosomal membrane / cell division / GTPase activity / synapse / centrosome / GTP binding / protein-containing complex binding / nucleolus / magnesium ion binding / Golgi apparatus / signal transduction / extracellular exosome / nucleoplasm / membrane / plasma membrane / cytosol / cytoplasm 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: 3.16 Å | |||||||||||||||||||||
データ登録者 | Xin, P. / Fang, Y. | |||||||||||||||||||||
| 資金援助 | 中国, 1件
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引用 | ジャーナル: PLoS Biol / 年: 2025タイトル: Structures of G-protein coupled receptor HCAR1 in complex with Gi1 protein reveal the mechanistic basis for ligand recognition and agonist selectivity. 著者: Xin Pan / Fang Ye / Peiruo Ning / Yiping Yu / Zhiyi Zhang / Jingxuan Wang / Geng Chen / Zhangsong Wu / Chen Qiu / Jiancheng Li / Bangning Chen / Lizhe Zhu / Chungen Qian / Kaizheng Gong / Yang Du / ![]() 要旨: Hydroxycarboxylic acid receptor 1 (HCAR1), also known as lactate receptor or GPR81, is a class A G-protein-coupled receptor with key roles in regulating lipid metabolism, neuroprotection, ...Hydroxycarboxylic acid receptor 1 (HCAR1), also known as lactate receptor or GPR81, is a class A G-protein-coupled receptor with key roles in regulating lipid metabolism, neuroprotection, angiogenesis, cardiovascular function, and inflammatory response in humans. HCAR1 is highly expressed in numerous types of cancer cells, where it participates in controlling cancer cell metabolism and defense mechanisms, rendering it an appealing target for cancer therapy. However, the molecular basis of HCAR1-mediated signaling remains poorly understood. Here, we report four cryo-EM structures of human HCAR1 and HCAR2 in complex with the Gi1 protein, in which HCAR1 binds to the subtype-specific agonist CHBA (3.16 Å) and apo form (3.36 Å), and HCAR2 binds to the subtype-specific agonists MK-1903 (2.68 Å) and SCH900271 (3.06 Å). Combined with mutagenesis and cellular functional assays, we elucidate the mechanisms underlying ligand recognition, receptor activation, and G protein coupling of HCAR1. More importantly, the key residues that determine ligand selectivity between HCAR1 and HCAR2 are clarified. On this basis, we further summarize the structural features of agonists that match the orthosteric pockets of HCAR1 and HCAR2. These structural insights are anticipated to greatly accelerate the development of novel HCAR1-targeted drugs, offering a promising avenue for the treatment of various diseases. | |||||||||||||||||||||
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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 | 9izd.cif.gz | 235.4 KB | 表示 | PDBx/mmCIF形式 |
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| PDB形式 | pdb9izd.ent.gz | 表示 | PDB形式 | |
| PDBx/mmJSON形式 | 9izd.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
| 文書・要旨 | 9izd_validation.pdf.gz | 452.2 KB | 表示 | wwPDB検証レポート |
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| 文書・詳細版 | 9izd_full_validation.pdf.gz | 466.2 KB | 表示 | |
| XML形式データ | 9izd_validation.xml.gz | 23.4 KB | 表示 | |
| CIF形式データ | 9izd_validation.cif.gz | 36.3 KB | 表示 | |
| アーカイブディレクトリ | https://data.pdbj.org/pub/pdb/validation_reports/iz/9izd ftp://data.pdbj.org/pub/pdb/validation_reports/iz/9izd | HTTPS FTP |
-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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要素
-Guanine nucleotide-binding protein ... , 3種, 3分子 BCG
| #2: タンパク質 | 分子量: 37069.543 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 |
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| #3: タンパク質 | 分子量: 40153.672 Da / 分子数: 1 / Mutation: G203A, A326S / 由来タイプ: 組換発現 / 由来: (組換発現) Homo sapiens (ヒト) / 遺伝子: GNAI1発現宿主: ![]() 参照: UniProt: P63096 |
| #4: タンパク質 | 分子量: 6218.162 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: ![]() 参照: UniProt: P59768 |
-タンパク質 / 抗体 / 非ポリマー , 3種, 3分子 AS
| #1: タンパク質 | 分子量: 31596.498 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: HCAR1, GPR104, GPR81, HCA1, FKSG80発現宿主: ![]() 参照: UniProt: Q9BXC0 |
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| #5: 抗体 | 分子量: 26424.385 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: ![]() |
| #6: 化合物 | ChemComp-A1D71 / 分子量: 172.566 Da / 分子数: 1 / 由来タイプ: 合成 / 式: C7H5ClO3 / 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: Cryo-EM structure of human HCAR1-Gi complex with CHBA タイプ: COMPLEX / Entity ID: #1-#5 / 由来: RECOMBINANT |
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| 由来(天然) | 生物種: Homo sapiens (ヒト) |
| 由来(組換発現) | 生物種: ![]() |
| 緩衝液 | pH: 7.2 |
| 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: NITROGEN |
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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: SPOT SCAN |
| 電子レンズ | モード: BRIGHT FIELD / 最大 デフォーカス(公称値): 1400 nm / 最小 デフォーカス(公称値): 1000 nm |
| 撮影 | 電子線照射量: 56 e/Å2 フィルム・検出器のモデル: GATAN K3 BIOQUANTUM (6k x 4k) |
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解析
| EMソフトウェア | 名称: PHENIX / カテゴリ: モデル精密化 |
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| CTF補正 | タイプ: PHASE FLIPPING AND AMPLITUDE CORRECTION |
| 3次元再構成 | 解像度: 3.16 Å / 解像度の算出法: FSC 0.143 CUT-OFF / 粒子像の数: 518325 / 対称性のタイプ: POINT |
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万見について




Homo sapiens (ヒト)
中国, 1件
引用






PDBj
































FIELD EMISSION GUN