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基本情報
登録情報 | ![]() | |||||||||
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タイトル | Structure of somatostatin receptor 2 bound with SST14. | |||||||||
![]() | Cryo-EM density map of SST14 bound SSTR2-DNGi complex. | |||||||||
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![]() | G protein coupled receptor / Cryo-EM / SST analogues / Polypeptide drugs / MEMBRANE PROTEIN | |||||||||
機能・相同性 | ![]() somatostatin signaling pathway / MECP2 regulates transcription of neuronal ligands / somatostatin receptor activity / hormone-mediated apoptotic signaling pathway / Olfactory Signaling Pathway / Sensory perception of sweet, bitter, and umami (glutamate) taste / Synthesis, secretion, and inactivation of Glucagon-like Peptide-1 (GLP-1) / peristalsis / Activation of the phototransduction cascade / hyperosmotic response ...somatostatin signaling pathway / MECP2 regulates transcription of neuronal ligands / somatostatin receptor activity / hormone-mediated apoptotic signaling pathway / Olfactory Signaling Pathway / Sensory perception of sweet, bitter, and umami (glutamate) taste / Synthesis, secretion, and inactivation of Glucagon-like Peptide-1 (GLP-1) / peristalsis / Activation of the phototransduction cascade / hyperosmotic response / neuropeptide binding / response to acidic pH / 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 / response to steroid hormone / G alpha (12/13) signalling events / Glucagon-type ligand receptors / G beta:gamma signalling through BTK / cellular response to glucocorticoid stimulus / 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 / G alpha (s) signalling events / G alpha (q) signalling events / 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 / response to starvation / neuronal dense core vesicle / G protein-coupled receptor signaling pathway, coupled to cyclic nucleotide second messenger / response to amino acid / neuropeptide signaling pathway / regulation of postsynaptic membrane neurotransmitter receptor levels / positive regulation of protein localization to cell cortex / Adenylate cyclase inhibitory pathway / T cell migration / forebrain development / D2 dopamine receptor binding / digestion / response to prostaglandin E / G protein-coupled serotonin receptor binding / adenylate cyclase regulator activity / adenylate cyclase-inhibiting serotonin receptor signaling pathway / response to nutrient / cellular response to forskolin / cerebellum development / regulation of mitotic spindle organization / regulation of cell migration / Peptide ligand-binding receptors / GABA-ergic synapse / PDZ domain binding / Regulation of insulin secretion / cellular response to estradiol stimulus / positive regulation of cholesterol biosynthetic process / G protein-coupled receptor binding / adenylate cyclase-inhibiting G protein-coupled receptor signaling pathway / hormone activity / adenylate cyclase-modulating G protein-coupled receptor signaling pathway / response to peptide hormone / G-protein beta/gamma-subunit complex binding / centriolar satellite / ADP signalling through P2Y purinoceptor 12 / photoreceptor disc membrane / Adrenaline,noradrenaline inhibits insulin secretion / GDP binding / G alpha (z) signalling events / cellular response to catecholamine stimulus / ADORA2B mediated anti-inflammatory cytokines production / adenylate cyclase-activating dopamine receptor signaling pathway / GPER1 signaling / cellular response to prostaglandin E stimulus / G-protein beta-subunit binding / heterotrimeric G-protein complex / sensory perception of taste / cell-cell signaling / signaling receptor complex adaptor activity / G protein activity / GTPase binding / retina development in camera-type eye / midbody / cell cortex / G alpha (i) 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 / G alpha (s) signalling events / phospholipase C-activating G protein-coupled receptor signaling pathway / spermatogenesis / chemical synaptic transmission 類似検索 - 分子機能 | |||||||||
生物種 | ![]() ![]() ![]() ![]() ![]() | |||||||||
手法 | 単粒子再構成法 / クライオ電子顕微鏡法 / 解像度: 2.85 Å | |||||||||
![]() | Bo Q / Yang F / Li YG / Meng XY / Zhang HH / Zhou YX / Ling SL / Sun DM / Lv P / Liu L ...Bo Q / Yang F / Li YG / Meng XY / Zhang HH / Zhou YX / Ling SL / Sun DM / Lv P / Liu L / Shi P / Tian CL | |||||||||
資金援助 | ![]()
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![]() | ![]() タイトル: Structural insights into the activation of somatostatin receptor 2 by cyclic SST analogues. 著者: Qing Bo / Fan Yang / Yingge Li / Xianyu Meng / Huanhuan Zhang / Yingxin Zhou / Shenglong Ling / Demeng Sun / Pei Lv / Lei Liu / Pan Shi / Changlin Tian / ![]() 要旨: The endogenous cyclic tetradecapeptide SST14 was reported to stimulate all five somatostatin receptors (SSTR1-5) for hormone release, neurotransmission, cell growth arrest and cancer suppression. Two ...The endogenous cyclic tetradecapeptide SST14 was reported to stimulate all five somatostatin receptors (SSTR1-5) for hormone release, neurotransmission, cell growth arrest and cancer suppression. Two SST14-derived short cyclic SST analogues (lanreotide or octreotide) with improved stability and longer lifetime were developed as drugs to preferentially activate SSTR2 and treat acromegalia and neuroendocrine tumors. Here, cryo-EM structures of the human SSTR2-Gi complex bound with SST14, octreotide or lanreotide were determined at resolutions of 2.85 Å, 2.97 Å, and 2.87 Å, respectively. Structural and functional analysis revealed that interactions between β-turn residues in SST analogues and transmembrane SSTR2 residues in the ligand-binding pocket are crucial for receptor binding and functional stimulation of the two SST14-derived cyclic octapeptides. Additionally, Q102, N276, and F294 could be responsible for the selectivity of lanreotide or octreotide for SSTR2 over SSTR1 or SSTR4. These results provide valuable insights into further rational development of SST analogue drugs targeting SSTR2. | |||||||||
履歴 |
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構造の表示
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-EMDBアーカイブ
マップデータ | ![]() | 28.6 MB | ![]() | |
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ヘッダ (付随情報) | ![]() ![]() | 20.3 KB 20.3 KB | 表示 表示 | ![]() |
画像 | ![]() | 85.5 KB | ||
Filedesc metadata | ![]() | 6.6 KB | ||
その他 | ![]() ![]() | 28.3 MB 28.3 MB | ||
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
EMDBのページ | ![]() ![]() |
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「今月の分子」の関連する項目 |
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マップ
ファイル | ![]() | ||||||||||||||||||||||||||||||||||||
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注釈 | Cryo-EM density map of SST14 bound SSTR2-DNGi complex. | ||||||||||||||||||||||||||||||||||||
投影像・断面図 | 画像のコントロール
画像は Spider により作成 | ||||||||||||||||||||||||||||||||||||
ボクセルのサイズ | X=Y=Z: 1.07 Å | ||||||||||||||||||||||||||||||||||||
密度 |
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対称性 | 空間群: 1 | ||||||||||||||||||||||||||||||||||||
詳細 | EMDB XML:
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-添付データ
-ハーフマップ: Cryo-EM half map A of SST14 bound SSTR2-DNGi complex.
ファイル | emd_33098_half_map_1.map | ||||||||||||
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注釈 | Cryo-EM half map A of SST14 bound SSTR2-DNGi complex. | ||||||||||||
投影像・断面図 |
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密度ヒストグラム |
-ハーフマップ: Cryo-EM half map B of SST14 bound SSTR2-DNGi complex.
ファイル | emd_33098_half_map_2.map | ||||||||||||
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注釈 | Cryo-EM half map B of SST14 bound SSTR2-DNGi complex. | ||||||||||||
投影像・断面図 |
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密度ヒストグラム |
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試料の構成要素
-全体 : The endogenous ligand SST14-bound somatostatin receptor 2 and Gi ...
全体 | 名称: The endogenous ligand SST14-bound somatostatin receptor 2 and Gi heterotrimer complex. |
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要素 |
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-超分子 #1: The endogenous ligand SST14-bound somatostatin receptor 2 and Gi ...
超分子 | 名称: The endogenous ligand SST14-bound somatostatin receptor 2 and Gi heterotrimer complex. タイプ: complex / ID: 1 / 親要素: 0 / 含まれる分子: all |
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由来(天然) | 生物種: ![]() |
-分子 #1: Somatostatin receptor type 2,LargeBit
分子 | 名称: Somatostatin receptor type 2,LargeBit / タイプ: protein_or_peptide / ID: 1 / コピー数: 1 / 光学異性体: LEVO |
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由来(天然) | 生物種: synthetic construct (人工物) |
分子量 | 理論値: 63.274395 KDa |
組換発現 | 生物種: ![]() ![]() |
配列 | 文字列: MKTIIALSYI FCLVFADYKD DDDKGSGSHH HHHHHHHHLE VLFQGPMDMA DEPLNGSHTW LSIPFDLNGS VVSTNTSNQT EPYYDLTSN AVLTFIYFVV CIIGLCGNTL VIYVILRYAK MKTITNIYIL NLAIADELFM LGLPFLAMQV ALVHWPFGKA I CRVVMTVD ...文字列: MKTIIALSYI FCLVFADYKD DDDKGSGSHH HHHHHHHHLE VLFQGPMDMA DEPLNGSHTW LSIPFDLNGS VVSTNTSNQT EPYYDLTSN AVLTFIYFVV CIIGLCGNTL VIYVILRYAK MKTITNIYIL NLAIADELFM LGLPFLAMQV ALVHWPFGKA I CRVVMTVD GINQFTSIFC LTVMSIDRYL AVVHPIKSAK WRRPRTAKMI TMAVWGVSLL VILPIMIYAG LRSNQWGRSS CT INWPGES GAWYTGFIIY TFILGFLVPL TIICLCYLFI IIKVKSSGIR VGSSKRKKSE KKVTRMVSIV VAVFIFCWLP FYI FNVSSV SMAISPTPAL KGMFDFVVVL TYANSCANPI LYAFLSDNFK KSFQNVLCLV KVSGTDDGER SDSKQDKSRL NETT ETQRT VFTLEDFVGD WEQTAAYNLD QVLEQGGVSS LLQNLAVSVT PIQRIVRSGE NALKIDIHVI IPYEGLSADQ MAQIE EVFK VVYPVDDHHF KVILPYGTLV IDGVTPNMLN YFGRPYEGIA VFDGKKITVT GTLWNGNKII DERLITPDGS MLFRVT INS UniProtKB: Somatostatin receptor type 2 |
-分子 #2: Guanine nucleotide-binding protein G(i) subunit alpha-1
分子 | 名称: Guanine nucleotide-binding protein G(i) subunit alpha-1 タイプ: protein_or_peptide / ID: 2 / コピー数: 1 / 光学異性体: LEVO |
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由来(天然) | 生物種: ![]() |
分子量 | 理論値: 40.472082 KDa |
組換発現 | 生物種: ![]() ![]() |
配列 | 文字列: MGCTLSAEDK AAVERSKMID RNLREDGEKA AREVKLLLLG AGESGKNTIV KQMKIIHEAG YSEEECKQYK AVVYSNTIQS IIAIIRAMG RLKIDFGDSA RADDARQLFV LAGAAEEGFM TAELAGVIKR LWKDSGVQAC FNRSREYQLN DSAAYYLNDL D RIAQPNYI ...文字列: MGCTLSAEDK AAVERSKMID RNLREDGEKA AREVKLLLLG AGESGKNTIV KQMKIIHEAG YSEEECKQYK AVVYSNTIQS IIAIIRAMG RLKIDFGDSA RADDARQLFV LAGAAEEGFM TAELAGVIKR LWKDSGVQAC FNRSREYQLN DSAAYYLNDL D RIAQPNYI PTQQDVLRTR VKTTGIVETH FTFKDLHFKM FDVGAQRSER KKWIHCFEGV TAIIFCVALS DYDLVLAEDE EM NRMHESM KLFDSICNNK WFTDTSIILF LNKKDLFEEK IKKSPLTICY PEYAGSNTYE EAAAYIQCQF EDLNKRKDTK EIY THFTCS TDTKNVQFVF DAVTDVIIKN NLKDCGLF UniProtKB: Guanine nucleotide-binding protein G(i) subunit alpha-1 |
-分子 #3: Guanine nucleotide-binding protein G(I)/G(S)/G(T) subunit beta-1
分子 | 名称: Guanine nucleotide-binding protein G(I)/G(S)/G(T) subunit beta-1 タイプ: protein_or_peptide / ID: 3 / コピー数: 1 / 光学異性体: LEVO |
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由来(天然) | 生物種: ![]() ![]() |
分子量 | 理論値: 38.975578 KDa |
組換発現 | 生物種: ![]() ![]() |
配列 | 文字列: MHHHHHHGSL LQSELDQLRQ EAEQLKNQIR DARKACADAT LSQITNNIDP VGRIQMRTRR TLRGHLAKIY AMHWGTDSRL LVSASQDGK LIIWDSYTTN KVHAIPLRSS WVMTCAYAPS GNYVACGGLD NICSIYNLKT REGNVRVSRE LAGHTGYLSC C RFLDDNQI ...文字列: MHHHHHHGSL LQSELDQLRQ EAEQLKNQIR DARKACADAT LSQITNNIDP VGRIQMRTRR TLRGHLAKIY AMHWGTDSRL LVSASQDGK LIIWDSYTTN KVHAIPLRSS WVMTCAYAPS GNYVACGGLD NICSIYNLKT REGNVRVSRE LAGHTGYLSC C RFLDDNQI VTSSGDTTCA LWDIETGQQT TTFTGHTGDV MSLSLAPDTR LFVSGACDAS AKLWDVREGM CRQTFTGHES DI NAICFFP NGNAFATGSD DATCRLFDLR ADQELMTYSH DNIICGITSV SFSKSGRLLL AGYDDFNCNV WDALKADRAG VLA GHDNRV SCLGVTDDGM AVATGSWDSF LKIWNGSS UniProtKB: Guanine nucleotide-binding protein G(I)/G(S)/G(T) subunit beta-1 |
-分子 #4: Guanine nucleotide-binding protein G(I)/G(S)/G(O) subunit gamma-2
分子 | 名称: Guanine nucleotide-binding protein G(I)/G(S)/G(O) subunit gamma-2 タイプ: protein_or_peptide / ID: 4 / コピー数: 1 / 光学異性体: LEVO |
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由来(天然) | 生物種: ![]() ![]() |
分子量 | 理論値: 7.861143 KDa |
組換発現 | 生物種: ![]() ![]() |
配列 | 文字列: MASNNTASIA QARKLVEQLK MEANIDRIKV SKAAADLMAY CEAHAKEDPL LTPVPASENP FREKKFFCAI L UniProtKB: Guanine nucleotide-binding protein G(I)/G(S)/G(O) subunit gamma-2 |
-分子 #5: ScFv16
分子 | 名称: ScFv16 / タイプ: protein_or_peptide / ID: 5 / コピー数: 1 / 光学異性体: LEVO |
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由来(天然) | 生物種: ![]() ![]() |
分子量 | 理論値: 32.768484 KDa |
組換発現 | 生物種: ![]() ![]() |
配列 | 文字列: MLLVNQSHQG FNKEHTSKMV SAIVLYVLLA AAAHSAFDVQ LVESGGGLVQ PGGSRKLSCS ASGFAFSSFG MHWVRQAPEK GLEWVAYIS SGSGTIYYAD TVKGRFTISR DDPKNTLFLQ MTSLRSEDTA MYYCVRSIYY YGSSPFDFWG QGTTLTVSSG G GGSGGGGS ...文字列: MLLVNQSHQG FNKEHTSKMV SAIVLYVLLA AAAHSAFDVQ LVESGGGLVQ PGGSRKLSCS ASGFAFSSFG MHWVRQAPEK GLEWVAYIS SGSGTIYYAD TVKGRFTISR DDPKNTLFLQ MTSLRSEDTA MYYCVRSIYY YGSSPFDFWG QGTTLTVSSG G GGSGGGGS GGGGSSDIVM TQATSSVPVT PGESVSISCR SSKSLLHSNG NTYLYWFLQR PGQSPQLLIY RMSNLASGVP DR FSGSGSG TAFTLTISRL EAEDVGVYYC MQHLEYPLTF GAGTKLELVD ENLYFQGASH HHHHHHH |
-分子 #6: Somatostatin-14
分子 | 名称: Somatostatin-14 / タイプ: protein_or_peptide / ID: 6 / コピー数: 1 / 光学異性体: LEVO |
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由来(天然) | 生物種: ![]() |
分子量 | 理論値: 1.641909 KDa |
配列 | 文字列: AGCKNFFWKT FTSC UniProtKB: Somatostatin |
-実験情報
-構造解析
手法 | クライオ電子顕微鏡法 |
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![]() | 単粒子再構成法 |
試料の集合状態 | particle |
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試料調製
緩衝液 | pH: 7.5 |
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凍結 | 凍結剤: ETHANE |
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電子顕微鏡法
顕微鏡 | FEI TITAN KRIOS |
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撮影 | フィルム・検出器のモデル: GATAN K3 (6k x 4k) / 平均電子線量: 55.0 e/Å2 |
電子線 | 加速電圧: 300 kV / 電子線源: ![]() |
電子光学系 | 照射モード: SPOT SCAN / 撮影モード: DIFFRACTION / 最大 デフォーカス(公称値): 2.2 µm / 最小 デフォーカス(公称値): 1.2 µm |
実験機器 | ![]() モデル: Titan Krios / 画像提供: FEI Company |
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画像解析
初期モデル | モデルのタイプ: NONE / 詳細: AlphaFold |
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最終 再構成 | 解像度のタイプ: BY AUTHOR / 解像度: 2.85 Å / 解像度の算出法: FSC 0.143 CUT-OFF / 使用した粒子像数: 457712 |
初期 角度割当 | タイプ: ANGULAR RECONSTITUTION |
最終 角度割当 | タイプ: ANGULAR RECONSTITUTION |