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基本情報
登録情報 | ![]() | |||||||||
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タイトル | CryoEM structure of PI3Kalpha | |||||||||
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![]() | PI3Kalapha / isoform selective / structure-based drug design. / CYTOSOLIC PROTEIN | |||||||||
機能・相同性 | ![]() perinuclear endoplasmic reticulum membrane / regulation of toll-like receptor 4 signaling pathway / response to muscle inactivity / negative regulation of actin filament depolymerization / phosphatidylinositol kinase activity / response to L-leucine / regulation of actin filament organization / response to butyrate / phosphatidylinositol 3-kinase regulator activity / positive regulation of focal adhesion disassembly ...perinuclear endoplasmic reticulum membrane / regulation of toll-like receptor 4 signaling pathway / response to muscle inactivity / negative regulation of actin filament depolymerization / phosphatidylinositol kinase activity / response to L-leucine / regulation of actin filament organization / response to butyrate / phosphatidylinositol 3-kinase regulator activity / positive regulation of focal adhesion disassembly / phosphatidylinositol 3-kinase activator activity / IRS-mediated signalling / 1-phosphatidylinositol-3-kinase regulator activity / positive regulation of endoplasmic reticulum unfolded protein response / interleukin-18-mediated signaling pathway / myeloid leukocyte migration / T follicular helper cell differentiation / autosome genomic imprinting / phosphatidylinositol 3-kinase complex / PI3K events in ERBB4 signaling / cellular response to hydrostatic pressure / phosphatidylinositol 3-kinase regulatory subunit binding / regulation of cellular respiration / neurotrophin TRKA receptor binding / positive regulation of protein localization to membrane / Activated NTRK2 signals through PI3K / cis-Golgi network / negative regulation of fibroblast apoptotic process / Activated NTRK3 signals through PI3K / ErbB-3 class receptor binding / transmembrane receptor protein tyrosine kinase adaptor activity / phosphatidylinositol 3-kinase complex, class IB / vasculature development / 1-phosphatidylinositol-4-phosphate 3-kinase activity / Signaling by cytosolic FGFR1 fusion mutants / Co-stimulation by ICOS / RHOD GTPase cycle / cardiac muscle cell contraction / RHOF GTPase cycle / phosphatidylinositol 3-kinase complex, class IA / kinase activator activity / Nephrin family interactions / anoikis / Signaling by LTK in cancer / phosphatidylinositol-3-phosphate biosynthetic process / positive regulation of leukocyte migration / Signaling by LTK / MET activates PI3K/AKT signaling / PI3K/AKT activation / 1-phosphatidylinositol-4,5-bisphosphate 3-kinase activity / negative regulation of stress fiber assembly / RND1 GTPase cycle / phosphatidylinositol-4,5-bisphosphate 3-kinase / positive regulation of filopodium assembly / RND2 GTPase cycle / phosphatidylinositol 3-kinase / vascular endothelial growth factor signaling pathway / RND3 GTPase cycle / relaxation of cardiac muscle / insulin binding / growth hormone receptor signaling pathway / 1-phosphatidylinositol-3-kinase activity / Signaling by ALK / RHOB GTPase cycle / PI-3K cascade:FGFR3 / RHOV GTPase cycle / natural killer cell mediated cytotoxicity / Erythropoietin activates Phosphoinositide-3-kinase (PI3K) / negative regulation of macroautophagy / GP1b-IX-V activation signalling / PI-3K cascade:FGFR2 / phosphatidylinositol-mediated signaling / PI-3K cascade:FGFR4 / PI-3K cascade:FGFR1 / RHOC GTPase cycle / RHOJ GTPase cycle / intracellular glucose homeostasis / negative regulation of osteoclast differentiation / phosphatidylinositol phosphate biosynthetic process / Synthesis of PIPs at the plasma membrane / response to dexamethasone / RHOU GTPase cycle / CDC42 GTPase cycle / negative regulation of anoikis / RET signaling / PI3K events in ERBB2 signaling / protein kinase activator activity / insulin receptor substrate binding / T cell differentiation / Interleukin-3, Interleukin-5 and GM-CSF signaling / extrinsic apoptotic signaling pathway via death domain receptors / PI3K Cascade / RHOG GTPase cycle / regulation of multicellular organism growth / intercalated disc / negative regulation of cell-matrix adhesion / CD28 dependent PI3K/Akt signaling / RHOA GTPase cycle / positive regulation of TOR signaling / Role of LAT2/NTAL/LAB on calcium mobilization 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: 3.12 Å | |||||||||
![]() | Valverde R / Shi H / Holliday M / Sun M | |||||||||
資金援助 | 1件
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![]() | ![]() タイトル: Discovery and Clinical Proof-of-Concept of RLY-2608, a First-in-Class Mutant-Selective Allosteric PI3Kα Inhibitor That Decouples Antitumor Activity from Hyperinsulinemia. 著者: Andreas Varkaris / Ermira Pazolli / Hakan Gunaydin / Qi Wang / Levi Pierce / Alessandro A Boezio / Artemisa Bulku / Lucian DiPietro / Cary Fridrich / Adam Frost / Fabrizio Giordanetto / Erika ...著者: Andreas Varkaris / Ermira Pazolli / Hakan Gunaydin / Qi Wang / Levi Pierce / Alessandro A Boezio / Artemisa Bulku / Lucian DiPietro / Cary Fridrich / Adam Frost / Fabrizio Giordanetto / Erika P Hamilton / Katherine Harris / Michael Holliday / Tamieka L Hunter / Amanda Iskandar / Yongli Ji / Alexandre Larivée / Jonathan R LaRochelle / André Lescarbeau / Fabien Llambi / Brenda Lormil / Mary M Mader / Brenton G Mar / Iain Martin / Thomas H McLean / Klaus Michelsen / Yakov Pechersky / Erika Puente-Poushnejad / Kevin Raynor / Dipali Rogala / Ramin Samadani / Alison M Schram / Kelley Shortsleeves / Sweta Swaminathan / Shahein Tajmir / Gege Tan / Yong Tang / Roberto Valverde / Bryan Wehrenberg / Jeremy Wilbur / Bret R Williams / Hongtao Zeng / Hanmo Zhang / W Patrick Walters / Beni B Wolf / David E Shaw / Donald A Bergstrom / James Watters / James S Fraser / Pascal D Fortin / D Randal Kipp / ![]() ![]() 要旨: PIK3CA (PI3Kα) is a lipid kinase commonly mutated in cancer, including ∼40% of hormone receptor-positive breast cancer. The most frequently observed mutants occur in the kinase and helical domains. ...PIK3CA (PI3Kα) is a lipid kinase commonly mutated in cancer, including ∼40% of hormone receptor-positive breast cancer. The most frequently observed mutants occur in the kinase and helical domains. Orthosteric PI3Kα inhibitors suffer from poor selectivity leading to undesirable side effects, most prominently hyperglycemia due to inhibition of wild-type (WT) PI3Kα. Here, we used molecular dynamics simulations and cryo-electron microscopy to identify an allosteric network that provides an explanation for how mutations favor PI3Kα activation. A DNA-encoded library screen leveraging electron microscopy-optimized constructs, differential enrichment, and an orthosteric-blocking compound led to the identification of RLY-2608, a first-in-class allosteric mutant-selective inhibitor of PI3Kα. RLY-2608 inhibited tumor growth in PIK3CA-mutant xenograft models with minimal impact on insulin, a marker of dysregulated glucose homeostasis. RLY-2608 elicited objective tumor responses in two patients diagnosed with advanced hormone receptor-positive breast cancer with kinase or helical domain PIK3CA mutations, with no observed WT PI3Kα-related toxicities. SIGNIFICANCE: Treatments for PIK3CA-mutant cancers are limited by toxicities associated with the inhibition of WT PI3Kα. Molecular dynamics, cryo-electron microscopy, and DNA-encoded libraries were ...SIGNIFICANCE: Treatments for PIK3CA-mutant cancers are limited by toxicities associated with the inhibition of WT PI3Kα. Molecular dynamics, cryo-electron microscopy, and DNA-encoded libraries were used to develop RLY-2608, a first-in-class inhibitor that demonstrates mutant selectivity in patients. This marks the advance of clinical mutant-selective inhibition that overcomes limitations of orthosteric PI3Kα inhibitors. See related commentary by Gong and Vanhaesebroeck, p. 204 . See related article by Varkaris et al., p. 227 . This article is featured in Selected Articles from This Issue, p. 201. | |||||||||
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構造の表示
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ダウンロードとリンク
-EMDBアーカイブ
マップデータ | ![]() | 3.6 MB | ![]() | |
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ヘッダ (付随情報) | ![]() ![]() | 28.6 KB 28.6 KB | 表示 表示 | ![]() |
FSC (解像度算出) | ![]() | 9.5 KB | 表示 | ![]() |
画像 | ![]() | 69.8 KB | ||
Filedesc metadata | ![]() | 8.3 KB | ||
その他 | ![]() ![]() ![]() | 81.7 MB 84.5 MB 84.5 MB | ||
アーカイブディレクトリ | ![]() ![]() | HTTPS FTP |
-検証レポート
文書・要旨 | ![]() | 734.3 KB | 表示 | ![]() |
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文書・詳細版 | ![]() | 733.7 KB | 表示 | |
XML形式データ | ![]() | 17.8 KB | 表示 | |
CIF形式データ | ![]() | 23.2 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 | ![]() 8tu6MC ![]() 8ts7C ![]() 8ts8C ![]() 8ts9C ![]() 8tsaC ![]() 8tsbC ![]() 8tscC ![]() 8tsdC M: このマップから作成された原子モデル 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 ![]() |
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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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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: 0.819 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
-追加マップ: #1
ファイル | emd_41617_additional_1.map | ||||||||||||
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投影像・断面図 |
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密度ヒストグラム |
-ハーフマップ: #2
ファイル | emd_41617_half_map_1.map | ||||||||||||
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投影像・断面図 |
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密度ヒストグラム |
-ハーフマップ: #1
ファイル | emd_41617_half_map_2.map | ||||||||||||
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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 : PI3Kalpha
全体 | 名称: PI3Kalpha |
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要素 |
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-超分子 #1: PI3Kalpha
超分子 | 名称: PI3Kalpha / 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: ![]() |
分子量 | 理論値: 850 KDa |
-超分子 #2: p110
超分子 | 名称: p110 / タイプ: complex / ID: 2 / 親要素: 1 / 含まれる分子: #1 |
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由来(天然) | 生物種: ![]() |
-超分子 #3: p85
超分子 | 名称: p85 / タイプ: complex / ID: 3 / 親要素: 1 / 含まれる分子: #2 |
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由来(天然) | 生物種: ![]() |
-分子 #1: Phosphatidylinositol 4,5-bisphosphate 3-kinase catalytic subunit ...
分子 | 名称: Phosphatidylinositol 4,5-bisphosphate 3-kinase catalytic subunit alpha isoform 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: ![]() |
分子量 | 理論値: 126.301992 KDa |
組換発現 | 生物種: ![]() |
配列 | 文字列: MHHHHHHGSL EVLFQGPPPR PSSGELWGIH LMPPRILVEC LLPNGMIVTL ECLREATLIT IKHELFKEAR KYPLHQLLQD ESSYIFVSV TQEAEREEFF DETRRLCDLR LFQPFLKVIE PVGNREEKIL NREIGFAIGM PVCEFDMVKD PEVQDFRRNI L NVCKEAVD ...文字列: MHHHHHHGSL EVLFQGPPPR PSSGELWGIH LMPPRILVEC LLPNGMIVTL ECLREATLIT IKHELFKEAR KYPLHQLLQD ESSYIFVSV TQEAEREEFF DETRRLCDLR LFQPFLKVIE PVGNREEKIL NREIGFAIGM PVCEFDMVKD PEVQDFRRNI L NVCKEAVD LRDLNSPHSR AMYVYPPNVE SSPELPKHIY NKLDKGQIIV VIWVIVSPNN DKQKYTLKIN HDCVPEQVIA EA IRKKTRS MLLSSEQLKL CVLEYQGKYI LKVCGCDEYF LEKYPLSQYK YIRSCIMLGR MPNLMLMAKE SLYSQLPMDC FTM PSYSRR ISTATPYMNG ETSTKSLWVI NSALRIKILC ATYVNVNIRD IDKIYVRTGI YHGGEPLCDN VNTQRVPCSN PRWN EWLNY DIYIPDLPRA ARLCLSICSV KGRKGAKEEH CPLAWGNINL FDYTDTLVSG KMALNLWPVP HGLEDLLNPI GVTGS NPNK ETPCLELEFD WFSSVVKFPD MSVIEEHANW SVSREAGFSY SHAGLSNRLA RDNELRENDK EQLKAISTRD PLSEIT EQE KDFLWSHRHY CVTIPEILPK LLLSVKWNSR DEVAQMYCLV KDWPPIKPEQ AMELLDCNYP DPMVRGFAVR CLEKYLT DD KLSQYLIQLV QVLKYEQYLD NLLVRFLLKK ALTNQRIGHF FFWHLKSEMH NKTVSQRFGL LLESYCRACG MYLKHLNR Q VEAMEKLINL TDILKQEKKD ETQKVQMKFL VEQMRRPDFM DALQGFLSPL NPAHQLGNLR LEECRIMSSA KRPLWLNWE NPDIMSELLF QNNEIIFKNG DDLRQDMLTL QIIRIMENIW QNQGLDLRML PYGCLSIGDC VGLIEVVRNS HTIMQIQCKG GLKGALQFN SHTLHQWLKD KNKGEIYDAA IDLFTRSCAG YCVATFILGI GDRHNSNIMV KDDGQLFHID FGHFLDHKKK K FGYKRERV PFVLTQDFLI VISKGAQECT KTREFERFQE MCYKAYLAIR QHANLFINLF SMMLGSGMPE LQSFDDIAYI RK TLALDKT EQEALEYFMK QMNDAHHGGW TTKMDWIFHT IKQHALN UniProtKB: Phosphatidylinositol 4,5-bisphosphate 3-kinase catalytic subunit alpha isoform |
-分子 #2: Phosphatidylinositol 3-kinase regulatory subunit alpha
分子 | 名称: Phosphatidylinositol 3-kinase regulatory subunit alpha 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: 83.710281 KDa |
組換発現 | 生物種: ![]() |
配列 | 文字列: MSAEGYQYRA LYDYKKEREE DIDLHLGDIL TVNKGSLVAL GFSDGQEARP EEIGWLNGYN ETTGERGDFP GTYVEYIGRK KISPPTPKP RPPRPLPVAP GSSKTEADVE QQALTLPDLA EQFAPPDIAP PLLIKLVEAI EKKGLECSTL YRTQSSSNLA E LRQLLDCD ...文字列: MSAEGYQYRA LYDYKKEREE DIDLHLGDIL TVNKGSLVAL GFSDGQEARP EEIGWLNGYN ETTGERGDFP GTYVEYIGRK KISPPTPKP RPPRPLPVAP GSSKTEADVE QQALTLPDLA EQFAPPDIAP PLLIKLVEAI EKKGLECSTL YRTQSSSNLA E LRQLLDCD TPSVDLEMID VHVLADAFKR YLLDLPNPVI PAAVYSEMIS LAPEVQSSEE YIQLLKKLIR SPSIPHQYWL TL QYLLKHF FKLSQTSSKN LLNARVLSEI FSPMLFRFSA ASSDNTENLI KVIEILISTE WNERQPAPAL PPKPPKPTTV ANN GMNNNM SLQDAEWYWG DISREEVNEK LRDTADGTFL VRDASTKMHG DYTLTLRKGG NNKLIKIFHR DGKYGFSDPL TFSS VVELI NHYRNESLAQ YNPKLDVKLL YPVSKYQQDQ VVKEDNIEAV GKKLHEYNTQ FQEKSREYDR LYEEYTRTSQ EIQMK RTAI EAFNETIKIF EEQCQTQERY SKEYIEKFKR EGNEKEIQRI MHNYDKLKSR ISEIIDSRRR LEEDLKKQAA EYREID KRM NSIKPDLIQL RKTRDQYLMW LTQKGVRQKK LNEWLGNENT EDQYSLVEDD EDLPHHDEKT WNVGSSNRNK AENLLRG KR DGTFLVRESS KQGCYACSVV VDGEVKHCVI NKTATGYGFA EPYNLYSSLK ELVLHYQHTS LVQHNDSLNV TLAYPVYA Q QRR UniProtKB: Phosphatidylinositol 3-kinase regulatory subunit alpha |
-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
濃度 | 0.35 mg/mL |
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緩衝液 | pH: 7.5 |
グリッド | モデル: UltrAuFoil R1.2/1.3 / 材質: GOLD / メッシュ: 300 / 支持フィルム - 材質: GOLD / 支持フィルム - トポロジー: HOLEY / 支持フィルム - Film thickness: 50 / 前処理 - タイプ: GLOW DISCHARGE / 前処理 - 時間: 90 sec. |
凍結 | 凍結剤: ETHANE |
詳細 | The sample was purified as a heterodimer and was monodisperse. |
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電子顕微鏡法
顕微鏡 | FEI TITAN KRIOS |
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特殊光学系 | エネルギーフィルター - 名称: GIF Bioquantum / エネルギーフィルター - スリット幅: 20 eV |
撮影 | #0 - Image recording ID: 1 #0 - フィルム・検出器のモデル: GATAN K3 (6k x 4k) #0 - 検出モード: COUNTING / #0 - 撮影したグリッド数: 3 / #0 - 実像数: 6866 / #0 - 平均露光時間: 2.68 sec. / #0 - 平均電子線量: 60.0 e/Å2 #0 - 詳細: Grids were prepared with 0.02% CTAB. Images were collected in movie mode at 23 frames per second. #1 - Image recording ID: 2 #1 - フィルム・検出器のモデル: GATAN K3 (6k x 4k) #1 - 撮影したグリッド数: 1 / #1 - 実像数: 2058 / #1 - 平均露光時間: 2.68 sec. / #1 - 平均電子線量: 60.0 e/Å2 #1 - 詳細: Images were collected in movie mode at 23 frames per second. |
電子線 | 加速電圧: 300 kV / 電子線源: ![]() |
電子光学系 | C2レンズ絞り径: 100.0 µm / 照射モード: FLOOD BEAM / 撮影モード: BRIGHT FIELD / Cs: 2.7 mm / 最大 デフォーカス(公称値): 2.0 µm / 最小 デフォーカス(公称値): 1.0 µm / 倍率(公称値): 105000 |
試料ステージ | 試料ホルダーモデル: FEI TITAN KRIOS AUTOGRID HOLDER ホルダー冷却材: NITROGEN |
実験機器 | ![]() モデル: Titan Krios / 画像提供: FEI Company |