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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: 6ot0 | ||||||
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タイトル | Structure of human Smoothened-Gi complex | ||||||
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![]() | SIGNALING PROTEIN / GPCR / Complex / Hedgehog signaling | ||||||
機能・相同性 | ![]() ventral midline determination / mesenchymal to epithelial transition involved in metanephric renal vesicle formation / response to inositol / regulation of heart morphogenesis / contact inhibition / negative regulation of hair follicle development / central nervous system neuron differentiation / 9+0 non-motile cilium / pancreas morphogenesis / regulation of somatic stem cell population maintenance ...ventral midline determination / mesenchymal to epithelial transition involved in metanephric renal vesicle formation / response to inositol / regulation of heart morphogenesis / contact inhibition / negative regulation of hair follicle development / central nervous system neuron differentiation / 9+0 non-motile cilium / pancreas morphogenesis / regulation of somatic stem cell population maintenance / epithelial-mesenchymal cell signaling / myoblast migration / atrial septum morphogenesis / spinal cord dorsal/ventral patterning / determination of left/right asymmetry in lateral mesoderm / left/right axis specification / ciliary tip / Activation of SMO / patched binding / forebrain morphogenesis / type B pancreatic cell development / somite development / positive regulation of organ growth / dorsal/ventral neural tube patterning / BBSome-mediated cargo-targeting to cilium / smooth muscle tissue development / cellular response to cholesterol / thalamus development / positive regulation of branching involved in ureteric bud morphogenesis / cerebellar cortex morphogenesis / mammary gland epithelial cell differentiation / dentate gyrus development / pattern specification process / commissural neuron axon guidance / dopaminergic neuron differentiation / oxysterol binding / positive regulation of multicellular organism growth / positive regulation of smoothened signaling pathway / Class B/2 (Secretin family receptors) / neural crest cell migration / cAMP-dependent protein kinase inhibitor activity / cell fate specification / negative regulation of DNA binding / anterior/posterior pattern specification / positive regulation of mesenchymal cell proliferation / ciliary membrane / midgut development / hair follicle morphogenesis / smoothened signaling pathway / negative regulation of epithelial cell differentiation / positive regulation of neuroblast proliferation / protein kinase A catalytic subunit binding / heart looping / endoplasmic reticulum-Golgi intermediate compartment / odontogenesis of dentin-containing tooth / neuroblast proliferation / vasculogenesis / Hedgehog 'off' state / negative regulation of protein phosphorylation / Adenylate cyclase inhibitory pathway / positive regulation of protein localization to cell cortex / T cell migration / D2 dopamine receptor binding / skeletal muscle fiber development / response to prostaglandin E / G protein-coupled serotonin receptor binding / adenylate cyclase-inhibiting serotonin receptor signaling pathway / adenylate cyclase regulator activity / homeostasis of number of cells within a tissue / regulation of mitotic spindle organization / centriole / protein sequestering activity / cellular response to forskolin / positive regulation of epithelial cell proliferation / epithelial cell proliferation / central nervous system development / astrocyte activation / Regulation of insulin secretion / G protein-coupled receptor binding / positive regulation of cholesterol biosynthetic process / Hedgehog 'on' state / G protein-coupled receptor activity / adenylate cyclase-inhibiting G protein-coupled receptor signaling pathway / multicellular organism growth / cerebral cortex development / cilium / adenylate cyclase-modulating G protein-coupled receptor signaling pathway / G-protein beta/gamma-subunit complex binding / response to peptide hormone / 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 / positive regulation of protein import into nucleus / Prostacyclin signalling through prostacyclin receptor 類似検索 - 分子機能 | ||||||
生物種 | ![]() ![]() ![]() | ||||||
手法 | 電子顕微鏡法 / 単粒子再構成法 / 解像度: 3.84 Å | ||||||
![]() | Qi, X. / Li, X. | ||||||
![]() | ![]() タイトル: Cryo-EM structure of oxysterol-bound human Smoothened coupled to a heterotrimeric G. 著者: Xiaofeng Qi / Heng Liu / Bonne Thompson / Jeffrey McDonald / Cheng Zhang / Xiaochun Li / ![]() 要旨: The oncoprotein Smoothened (SMO), a G-protein-coupled receptor (GPCR) of the Frizzled-class (class-F), transduces the Hedgehog signal from the tumour suppressor Patched-1 (PTCH1) to the glioma- ...The oncoprotein Smoothened (SMO), a G-protein-coupled receptor (GPCR) of the Frizzled-class (class-F), transduces the Hedgehog signal from the tumour suppressor Patched-1 (PTCH1) to the glioma-associated-oncogene (GLI) transcription factors, which activates the Hedgehog signalling pathway. It has remained unknown how PTCH1 modulates SMO, how SMO is stimulated to form a complex with heterotrimeric G proteins and whether G-protein coupling contributes to the activation of GLI proteins. Here we show that 24,25-epoxycholesterol, which we identify as an endogenous ligand of PTCH1, can stimulate Hedgehog signalling in cells and can trigger G-protein signalling via human SMO in vitro. We present a cryo-electron microscopy structure of human SMO bound to 24(S),25-epoxycholesterol and coupled to a heterotrimeric G protein. The structure reveals a ligand-binding site for 24(S),25-epoxycholesterol in the 7-transmembrane region, as well as a G-coupled activation mechanism of human SMO. Notably, the G protein presents a different arrangement from that of class-A GPCR-G complexes. Our work provides molecular insights into Hedgehog signal transduction and the activation of a class-F GPCR. | ||||||
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構造の表示
ムービー |
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構造ビューア | 分子: ![]() ![]() |
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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 | ![]() | 286 KB | 表示 | ![]() |
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PDB形式 | ![]() | 220.7 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 MB | 表示 | ![]() |
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文書・詳細版 | ![]() | 1 MB | 表示 | |
XML形式データ | ![]() | 40.6 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
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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
-Guanine nucleotide-binding protein ... , 3種, 3分子 ABG
#2: タンパク質 | 分子量: 40414.047 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: P63096 |
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#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: P62873 |
#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) ![]() 発現宿主: ![]() ![]() 参照: UniProt: P59768 |
-抗体 , 2種, 2分子 LH
#5: 抗体 | 分子量: 23258.783 Da / 分子数: 1 / 由来タイプ: 組換発現 / 由来: (組換発現) ![]() ![]() ![]() ![]() |
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#6: 抗体 | 分子量: 25788.822 Da / 分子数: 1 / 由来タイプ: 組換発現 / 由来: (組換発現) ![]() ![]() ![]() ![]() |
-タンパク質 / 非ポリマー , 2種, 2分子 R

#1: タンパク質 | 分子量: 62109.387 Da / 分子数: 1 / 断片: residues 1-555 / 由来タイプ: 組換発現 / 由来: (組換発現) ![]() ![]() |
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#7: 化合物 | ChemComp-CO1 / |
-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 |
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分子量 | 値: 0.250 MDa / 実験値: YES | ||||||||||||||||||||||||||||||
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由来(組換発現) |
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緩衝液 | pH: 7.5 | ||||||||||||||||||||||||||||||
試料 | 包埋: NO / シャドウイング: NO / 染色: NO / 凍結: NO |
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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: DARK FIELD |
撮影 | 電子線照射量: 1.4 e/Å2 フィルム・検出器のモデル: GATAN K2 SUMMIT (4k x 4k) |
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解析
ソフトウェア | 名称: REFMAC / バージョン: 5.8.0158 / 分類: 精密化 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
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CTF補正 | タイプ: NONE | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
3次元再構成 | 解像度: 3.84 Å / 解像度の算出法: FSC 0.143 CUT-OFF / 粒子像の数: 141100 / 対称性のタイプ: POINT | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
精密化 | 解像度: 3.84→3.84 Å / Cor.coef. Fo:Fc: 0.876 / SU B: 148.702 / SU ML: 1.573 / ESU R: 0.975 立体化学のターゲット値: MAXIMUM LIKELIHOOD WITH PHASES 詳細: HYDROGENS HAVE BEEN ADDED IN THE RIDING POSITIONS
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溶媒の処理 | イオンプローブ半径: 0.8 Å / 減衰半径: 0.8 Å / VDWプローブ半径: 1.2 Å / 溶媒モデル: MASK | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
原子変位パラメータ | Biso mean: 200.285 Å2
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精密化ステップ | サイクル: 1 / 合計: 10572 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
拘束条件 |
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