+データを開く
-基本情報
登録情報 | データベース: EMDB / ID: EMD-27411 | |||||||||
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タイトル | Ectodomain of full-length KIT(T417I,delta418-419)-SCF dimers | |||||||||
マップデータ | Ectodomain local refinement of KIT(T417I,delta418-419)-SCF dimers | |||||||||
試料 |
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機能・相同性 | 機能・相同性情報 positive regulation of myeloid leukocyte differentiation / negative regulation of mast cell apoptotic process / stem cell factor receptor binding / mast cell migration / positive regulation of hematopoietic progenitor cell differentiation / positive regulation of hematopoietic stem cell proliferation / Dasatinib-resistant KIT mutants / Imatinib-resistant KIT mutants / KIT mutants bind TKIs / Masitinib-resistant KIT mutants ...positive regulation of myeloid leukocyte differentiation / negative regulation of mast cell apoptotic process / stem cell factor receptor binding / mast cell migration / positive regulation of hematopoietic progenitor cell differentiation / positive regulation of hematopoietic stem cell proliferation / Dasatinib-resistant KIT mutants / Imatinib-resistant KIT mutants / KIT mutants bind TKIs / Masitinib-resistant KIT mutants / Nilotinib-resistant KIT mutants / Regorafenib-resistant KIT mutants / Signaling by kinase domain mutants of KIT / Sunitinib-resistant KIT mutants / Signaling by juxtamembrane domain KIT mutants / Sorafenib-resistant KIT mutants / Signaling by extracellular domain mutants of KIT / stem cell factor receptor activity / hematopoietic stem cell migration / melanocyte adhesion / positive regulation of pyloric antrum smooth muscle contraction / positive regulation of colon smooth muscle contraction / erythropoietin-mediated signaling pathway / positive regulation of vascular associated smooth muscle cell differentiation / melanocyte migration / positive regulation of dendritic cell cytokine production / Kit signaling pathway / positive regulation of melanocyte differentiation / regulation of bile acid metabolic process / positive regulation of small intestine smooth muscle contraction / mast cell apoptotic process / mast cell differentiation / positive regulation of mast cell proliferation / mast cell chemotaxis / myeloid leukocyte differentiation / Fc receptor signaling pathway / glycosphingolipid metabolic process / mast cell proliferation / positive regulation of long-term neuronal synaptic plasticity / detection of mechanical stimulus involved in sensory perception of sound / positive regulation of pseudopodium assembly / positive regulation of mast cell cytokine production / immature B cell differentiation / melanocyte differentiation / germ cell migration / lymphoid progenitor cell differentiation / myeloid progenitor cell differentiation / digestive tract development / positive regulation of Ras protein signal transduction / negative regulation of programmed cell death / 神経堤 / embryonic hemopoiesis / lamellipodium assembly / 顔料 / positive regulation of leukocyte migration / tongue development / megakaryocyte development / Regulation of KIT signaling / mast cell degranulation / stem cell population maintenance / positive regulation of Notch signaling pathway / cytokine binding / negative regulation of reproductive process / negative regulation of developmental process / spermatid development / growth factor binding / somatic stem cell population maintenance / 造血 / T cell differentiation / ectopic germ cell programmed cell death / hematopoietic progenitor cell differentiation / positive regulation of phospholipase C activity / response to cadmium ion / T cell proliferation / ovarian follicle development / positive regulation of tyrosine phosphorylation of STAT protein / extrinsic apoptotic signaling pathway in absence of ligand / positive regulation of T cell proliferation / TFAP2 (AP-2) family regulates transcription of growth factors and their receptors / transmembrane receptor protein tyrosine kinase activity / SH2 domain binding / cell chemotaxis / B cell differentiation / 赤血球形成 / acrosomal vesicle / Signaling by phosphorylated juxtamembrane, extracellular and kinase domain KIT mutants / filopodium / epithelial cell proliferation / cytokine activity / 細胞分化 / positive regulation of receptor signaling pathway via JAK-STAT / growth factor activity / visual learning / Signaling by SCF-KIT / cytoplasmic side of plasma membrane / response to organic cyclic compound / 受容体型チロシンキナーゼ / 核小体 / cytokine-mediated signaling pathway / male gonad development 類似検索 - 分子機能 | |||||||||
生物種 | Homo sapiens (ヒト) | |||||||||
手法 | 単粒子再構成法 / クライオ電子顕微鏡法 / 解像度: 3.96 Å | |||||||||
データ登録者 | Krimmer SG / Bertoletti N / Mi W / Schlessinger J | |||||||||
資金援助 | 1件
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引用 | ジャーナル: Proc Natl Acad Sci U S A / 年: 2023 タイトル: Cryo-EM analyses of KIT and oncogenic mutants reveal structural oncogenic plasticity and a target for therapeutic intervention. 著者: Stefan G Krimmer / Nicole Bertoletti / Yoshihisa Suzuki / Luka Katic / Jyotidarsini Mohanty / Sheng Shu / Sangwon Lee / Irit Lax / Wei Mi / Joseph Schlessinger / 要旨: The receptor tyrosine kinase KIT and its ligand stem cell factor (SCF) are required for the development of hematopoietic stem cells, germ cells, and other cells. A variety of human cancers, such as ...The receptor tyrosine kinase KIT and its ligand stem cell factor (SCF) are required for the development of hematopoietic stem cells, germ cells, and other cells. A variety of human cancers, such as acute myeloid leukemia, gastrointestinal stromal tumor, and mast cell leukemia, are driven by somatic gain-of-function KIT mutations. Here, we report cryo electron microscopy (cryo-EM) structural analyses of full-length wild-type and two oncogenic KIT mutants, which show that the overall symmetric arrangement of the extracellular domain of ligand-occupied KIT dimers contains asymmetric D5 homotypic contacts juxtaposing the plasma membrane. Mutational analysis of KIT reveals in D5 region an "Achilles heel" for therapeutic intervention. A ligand-sensitized oncogenic KIT mutant exhibits a more comprehensive and stable D5 asymmetric conformation. A constitutively active ligand-independent oncogenic KIT mutant adopts a V-shaped conformation solely held by D5-mediated contacts. Binding of SCF to this mutant fully restores the conformation of wild-type KIT dimers, including the formation of salt bridges responsible for D4 homotypic contacts and other hallmarks of SCF-induced KIT dimerization. These experiments reveal an unexpected structural plasticity of oncogenic KIT mutants and a therapeutic target in D5. | |||||||||
履歴 |
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-構造の表示
添付画像 |
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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 | emd_27411.map.gz | 212.7 MB | EMDBマップデータ形式 | |
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ヘッダ (付随情報) | emd-27411-v30.xml emd-27411.xml | 22.2 KB 22.2 KB | 表示 表示 | EMDBヘッダ |
FSC (解像度算出) | emd_27411_fsc.xml | 16.6 KB | 表示 | FSCデータファイル |
画像 | emd_27411.png | 59.7 KB | ||
マスクデータ | emd_27411_msk_1.map | 421.9 MB | マスクマップ | |
その他 | emd_27411_additional_1.map.gz emd_27411_half_map_1.map.gz emd_27411_half_map_2.map.gz | 398.4 MB 391.5 MB 391.5 MB | ||
アーカイブディレクトリ | http://ftp.pdbj.org/pub/emdb/structures/EMD-27411 ftp://ftp.pdbj.org/pub/emdb/structures/EMD-27411 | HTTPS FTP |
-関連構造データ
関連構造データ | 8dfqMC 8dfmC 8dfpC 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 (文献) |
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類似構造データ | 類似検索 - 機能・相同性F&H 検索 |
-リンク
EMDBのページ | EMDB (EBI/PDBe) / EMDataResource |
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「今月の分子」の関連する項目 |
-マップ
ファイル | ダウンロード / ファイル: emd_27411.map.gz / 形式: CCP4 / 大きさ: 421.9 MB / タイプ: IMAGE STORED AS FLOATING POINT NUMBER (4 BYTES) | ||||||||||||||||||||
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注釈 | Ectodomain local refinement of KIT(T417I,delta418-419)-SCF dimers | ||||||||||||||||||||
ボクセルのサイズ | X=Y=Z: 1.4167 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
-マスク #1
ファイル | emd_27411_msk_1.map | ||||||||||||
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投影像・断面図 |
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密度ヒストグラム |
-追加マップ: Sharpened main map
ファイル | emd_27411_additional_1.map | ||||||||||||
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注釈 | Sharpened main map | ||||||||||||
投影像・断面図 |
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密度ヒストグラム |
-ハーフマップ: Half map A of main map
ファイル | emd_27411_half_map_1.map | ||||||||||||
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注釈 | Half map A of main map | ||||||||||||
投影像・断面図 |
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密度ヒストグラム |
-ハーフマップ: Half map B of main map
ファイル | emd_27411_half_map_2.map | ||||||||||||
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注釈 | Half map B of main map | ||||||||||||
投影像・断面図 |
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密度ヒストグラム |
-試料の構成要素
-全体 : Full-length KIT(T417I,delta418-419)-SCF dimers reconstituted in a...
全体 | 名称: Full-length KIT(T417I,delta418-419)-SCF dimers reconstituted in amphipol |
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要素 |
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-超分子 #1: Full-length KIT(T417I,delta418-419)-SCF dimers reconstituted in a...
超分子 | 名称: Full-length KIT(T417I,delta418-419)-SCF dimers reconstituted in amphipol タイプ: complex / ID: 1 / キメラ: Yes / 親要素: 0 / 含まれる分子: #1-#2 |
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由来(天然) | 生物種: Homo sapiens (ヒト) |
分子量 | 理論値: 250 KDa |
-分子 #1: Isoform 2 of Mast/stem cell growth factor receptor Kit
分子 | 名称: Isoform 2 of Mast/stem cell growth factor receptor Kit タイプ: protein_or_peptide / ID: 1 / コピー数: 2 / 光学異性体: LEVO / EC番号: 受容体型チロシンキナーゼ |
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由来(天然) | 生物種: Homo sapiens (ヒト) |
分子量 | 理論値: 110.390805 KDa |
組換発現 | 生物種: Spodoptera frugiperda (ツマジロクサヨトウ) |
配列 | 文字列: MTILCWLALL STLTAVNADY KDDDDKRPHA MGEPSPPSIH PGKSDLIVRV GDEIRLLCTD PGFVKWTFEI LDETNENKQN EWITEKAEA TNTGKYTCTN KHGLSNSIYV FVRDPAKLFL VDRSLYGKED NDTLVRCPLT DPEVTNYSLK GCQGKPLPKD L RFIPDPKA ...文字列: MTILCWLALL STLTAVNADY KDDDDKRPHA MGEPSPPSIH PGKSDLIVRV GDEIRLLCTD PGFVKWTFEI LDETNENKQN EWITEKAEA TNTGKYTCTN KHGLSNSIYV FVRDPAKLFL VDRSLYGKED NDTLVRCPLT DPEVTNYSLK GCQGKPLPKD L RFIPDPKA GIMIKSVKRA YHRLCLHCSV DQEGKSVLSE KFILKVRPAF KAVPVVSVSK ASYLLREGEE FTVTCTIKDV SS SVYSTWK RENSQTKLQE KYNSWHHGDF NYERQATLTI SSARVNDSGV FMCYANNTFG SANVTTTLEV VDKGFINIFP MIN TTVFVN DGENVDLIVE YEAFPKPEHQ QWIYMNRTFT DKWEDYPKSE NESNIRYVSE LHLTRLKGTE GGTYTFLVSN SDVN AAIAF NVYVNTKPEI LIRLVNGMLQ CVAAGFPEPT IDWYFCPGTE QRCSASVLPV DVQTLNSSGP PFGKLVVQSS IDSSA FKHN GTVECKAYND VGKTSAYFNF AFKEQIHPHT LFTPLLIGFV IVAGMMCIIV MILTYKYLQK PMYEVQWKVV EEINGN NYV YIDPTQLPYD HKWEFPRNRL SFGKTLGAGA FGKVVEATAY GLIKSDAAMT VAVAMLKPSA HLTEREALMS ELKVLSY LG NHMNIVNLLG ACTIGGPTLV ITEYCCYGDL LNFLRRKRDS FICSKQEDHA EAALYKNLLH SKESSCSDST NEYMDMKP G VSYVVPTKAD KRRSVRIGSY IERDVTPAIM EDDELALDLE DLLSFSYQVA KGMAFLASKN CIHRDLAARN ILLTHGRIT KICDFGLARD IKNDSNYVVK GNARLPVKWM APESIFNCVY TFESDVWSYG IFLWELFSLG SSPYPGMPVD SKFYKMIKEG FRMLSPEHA PAEMYDIMKT CWDADPLKRP TFKQIVQLIE KQISESTNHI YSNLANCSPN RQKPVVDHSV RINSVGSTAS S SQPLLVHD DVGSHHHHHH |
-分子 #2: Soluble KIT ligand
分子 | 名称: Soluble KIT ligand / タイプ: protein_or_peptide / ID: 2 / コピー数: 2 / 光学異性体: LEVO |
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由来(天然) | 生物種: Homo sapiens (ヒト) |
分子量 | 理論値: 16.007306 KDa |
組換発現 | 生物種: Escherichia coli BL21(DE3) (大腸菌) |
配列 | 文字列: EGICRNRVTN NVKDVTKLVA NLPKDYMITL KYVPGMDVLP SHCWISEMVV QLSDSLTDLL DKFSNISEGL SNYSIIDKLV NIVDDLVEC VKENSSKDLK KSFKSPEPRL FTPEEFFRIF NRSIDAFKDF VVASETSDCV VS |
-分子 #4: 2-acetamido-2-deoxy-beta-D-glucopyranose
分子 | 名称: 2-acetamido-2-deoxy-beta-D-glucopyranose / タイプ: ligand / ID: 4 / コピー数: 1 / 式: NAG |
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分子量 | 理論値: 221.208 Da |
Chemical component information | ChemComp-NAG: |
-実験情報
-構造解析
手法 | クライオ電子顕微鏡法 |
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解析 | 単粒子再構成法 |
試料の集合状態 | particle |
-試料調製
濃度 | 5.6 mg/mL | ||||||||||||
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緩衝液 | pH: 7.4 構成要素:
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グリッド | モデル: C-flat-1.2/1.3 / 材質: GOLD / メッシュ: 300 / 前処理 - タイプ: GLOW DISCHARGE / 前処理 - 時間: 10 sec. / 前処理 - 雰囲気: AIR | ||||||||||||
凍結 | 凍結剤: ETHANE / チャンバー内湿度: 90 % / チャンバー内温度: 293 K / 装置: GATAN CRYOPLUNGE 3 / 詳細: Blotting time 3 sec, blotting force 0.. | ||||||||||||
詳細 | This sample was monodisperse. |
-電子顕微鏡法
顕微鏡 | FEI TITAN KRIOS |
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電子線 | 加速電圧: 300 kV / 電子線源: FIELD EMISSION GUN |
電子光学系 | 照射モード: FLOOD BEAM / 撮影モード: BRIGHT FIELDBright-field microscopy / Cs: 2.7 mm / 最大 デフォーカス(公称値): 1.5 µm / 最小 デフォーカス(公称値): 0.5 µm / 倍率(公称値): 130000 |
試料ステージ | 試料ホルダーモデル: FEI TITAN KRIOS AUTOGRID HOLDER |
撮影 | フィルム・検出器のモデル: GATAN K3 (6k x 4k) / 撮影したグリッド数: 1 / 実像数: 16476 / 平均露光時間: 1.52 sec. / 平均電子線量: 49.31 e/Å2 |
実験機器 | モデル: Titan Krios / 画像提供: FEI Company |