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基本情報
| 登録情報 | データベース: PDB / ID: 9ef4 | |||||||||||||||||||||
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| タイトル | Cryo-EM structure of Drosophila melanogaster insulin receptor (dmIR) bound with two DILP1, symmetric conformation | |||||||||||||||||||||
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キーワード | STRUCTURAL PROTEIN / Insulin receptor / DILP | |||||||||||||||||||||
| 機能・相同性 | 機能・相同性情報primary spermatocyte growth / negative regulation of peptide hormone secretion / Extra-nuclear estrogen signaling / response to anoxia / negative regulation of entry into reproductive diapause / Insulin signaling pathway / Insulin receptor recycling / female mating behavior / embryonic development via the syncytial blastoderm / male germ-line stem cell asymmetric division ...primary spermatocyte growth / negative regulation of peptide hormone secretion / Extra-nuclear estrogen signaling / response to anoxia / negative regulation of entry into reproductive diapause / Insulin signaling pathway / Insulin receptor recycling / female mating behavior / embryonic development via the syncytial blastoderm / male germ-line stem cell asymmetric division / female germ-line stem cell population maintenance / germ-band shortening / germ-line stem-cell niche homeostasis / carbohydrate homeostasis / imaginal disc growth / open tracheal system development / germ-line stem cell division / negative regulation of circadian sleep/wake cycle, sleep / positive regulation of neuron remodeling / lymph gland development / follicle cell of egg chamber development / positive regulation of border follicle cell migration / female germ-line stem cell asymmetric division / positive regulation of fat cell proliferation / intestinal stem cell homeostasis / growth cone membrane / positive regulation of organ growth / positive regulation of lipid storage / insulin receptor complex / regulation of organ growth / insulin receptor activity / embryo development ending in birth or egg hatching / positive regulation of multicellular organism growth / insulin binding / triglyceride homeostasis / negative regulation of feeding behavior / positive regulation of neuroblast proliferation / positive regulation of wound healing / negative regulation of macroautophagy / female gonad development / lipid homeostasis / insulin receptor substrate binding / regulation of multicellular organism growth / developmental growth / positive regulation of cell size / phosphatidylinositol 3-kinase binding / positive regulation of TORC1 signaling / axon guidance / cholesterol homeostasis / cellular response to starvation / determination of adult lifespan / insulin receptor binding / response to cocaine / locomotory behavior / receptor protein-tyrosine kinase / circadian rhythm / hormone activity / SH3 domain binding / multicellular organism growth / insulin receptor signaling pathway / nervous system development / glucose homeostasis / regulation of cell population proliferation / protein autophosphorylation / positive regulation of cell growth / response to oxidative stress / protein tyrosine kinase activity / protein phosphorylation / positive regulation of phosphatidylinositol 3-kinase/protein kinase B signal transduction / positive regulation of MAPK cascade / axon / positive regulation of cell population proliferation / extracellular space / extracellular region / ATP binding / metal ion binding / identical protein binding / plasma membrane 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 / クライオ電子顕微鏡法 / 解像度: 3.9 Å | |||||||||||||||||||||
データ登録者 | Bai, X.C. | |||||||||||||||||||||
| 資金援助 | 米国, 1件
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引用 | ジャーナル: Nat Commun / 年: 2025タイトル: Structure and activation of the Drosophila insulin receptor by three Drosophila insulin-like peptides. 著者: Kai Cai / Michelle Ng / Rochele R Yamamoto / Mohammed Akhter Hossain / Catherine Hall / John D Wade / Marc Tatar / Eunhee Choi / Xiao-Chen Bai / ![]() 要旨: Insulin/IGF signaling (IIS) is a highly conserved pathway essential for physiological regulation from yeast to mammals. In Drosophila melanogaster, a single insulin-like receptor (dmIR) interacts ...Insulin/IGF signaling (IIS) is a highly conserved pathway essential for physiological regulation from yeast to mammals. In Drosophila melanogaster, a single insulin-like receptor (dmIR) interacts with various insulin-like peptides (DILPs), leading to diverse signaling and functional outcomes. However, the mechanisms by which different DILPs result in varied receptor activation and biological responses remain unclear. Here, we determine the cryo-electron microscopy (cryo-EM) structures of dmIR in complex with three DILPs: DILP1, DILP2, and DILP5. Our structural analyses reveal that each DILP induces distinct conformations of dmIR: the dmIR/DILP5 complex adopts the Ƭ-shaped asymmetric conformation with three bound DILP5 molecules; the dmIR/DILP2 complex displays the Γ-shaped asymmetric conformation with a single bound DILP2 molecule; and the dmIR/DILP1 complex shows both a Γ-shaped asymmetric conformation and a symmetric conformation that resembles a T-shape with a splayed stem. Functional assays demonstrate that the efficacy of DILP-mediated dmIR activation differs, with DILP5 inducing higher levels of receptor autophosphorylation, followed by DILP2 and DILP1. Together, these findings suggest that the distinct interactions between dmIR and DILPs dictate specific patterns of receptor activation. | |||||||||||||||||||||
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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 | 9ef4.cif.gz | 648.3 KB | 表示 | PDBx/mmCIF形式 |
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| PDB形式 | pdb9ef4.ent.gz | 513.3 KB | 表示 | PDB形式 |
| PDBx/mmJSON形式 | 9ef4.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
| アーカイブディレクトリ | https://data.pdbj.org/pub/pdb/validation_reports/ef/9ef4 ftp://data.pdbj.org/pub/pdb/validation_reports/ef/9ef4 | HTTPS FTP |
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-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
| #1: タンパク質・ペプチド | 分子量: 4243.928 Da / 分子数: 2 / 由来タイプ: 合成 由来: (合成) ![]() 参照: UniProt: Q9VT50 #2: タンパク質・ペプチド | 分子量: 3025.562 Da / 分子数: 2 / 由来タイプ: 合成 由来: (合成) ![]() 参照: UniProt: Q9VT50 #3: タンパク質 | 分子量: 240078.078 Da / 分子数: 2 / 由来タイプ: 組換発現 由来: (組換発現) ![]() 遺伝子: InR, Dir-a, Inr-a, IR, CG18402 発現宿主: Baculovirus expression vector pFastBac1-HM (ウイルス)参照: UniProt: P09208, receptor protein-tyrosine kinase #4: 糖 | ChemComp-NAG / 研究の焦点であるリガンドがあるか | Y | 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 | 名称: Drosophila melanogaster insulin receptor in complex with two DILP1, symmetric conformation タイプ: COMPLEX / Entity ID: #1-#3 / 由来: RECOMBINANT |
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| 由来(天然) | 生物種: ![]() |
| 由来(組換発現) | 生物種: Baculovirus expression vector pFastBac1-HM (ウイルス) |
| 緩衝液 | pH: 7.4 |
| 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: ETHANE |
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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: FLOOD BEAM |
| 電子レンズ | モード: BRIGHT FIELD / 最大 デフォーカス(公称値): 2200 nm / 最小 デフォーカス(公称値): 800 nm |
| 撮影 | 電子線照射量: 50 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 |
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| CTF補正 | タイプ: PHASE FLIPPING AND AMPLITUDE CORRECTION | ||||||||||||||||||||||||||||||||||||
| 3次元再構成 | 解像度: 3.9 Å / 解像度の算出法: FSC 0.143 CUT-OFF / 粒子像の数: 25580 / 対称性のタイプ: POINT | ||||||||||||||||||||||||||||||||||||
| 精密化 | 最高解像度: 3.9 Å 立体化学のターゲット値: REAL-SPACE (WEIGHTED MAP SUM AT ATOM CENTERS) | ||||||||||||||||||||||||||||||||||||
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ムービー
コントローラー
万見について






米国, 1件
引用







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Baculovirus expression vector pFastBac1-HM (ウイルス)

FIELD EMISSION GUN