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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: 9bd1 | ||||||||||||||||||||||||
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| タイトル | beta/alpha1 region of ApoB 100 | ||||||||||||||||||||||||
要素 | Apolipoprotein B-100 | ||||||||||||||||||||||||
キーワード | LIPID TRANSPORT / Apolipoprotien B 100 / alpha/beta 1 region / LDL | ||||||||||||||||||||||||
| 機能・相同性 | 機能・相同性情報mature chylomicron / Scavenging by Class H Receptors / triglyceride mobilization / positive regulation of cholesterol storage / VLDL assembly / regulation of cholesterol biosynthetic process / LDL remodeling / Scavenging by Class B Receptors / lipase binding / VLDL clearance ...mature chylomicron / Scavenging by Class H Receptors / triglyceride mobilization / positive regulation of cholesterol storage / VLDL assembly / regulation of cholesterol biosynthetic process / LDL remodeling / Scavenging by Class B Receptors / lipase binding / VLDL clearance / triglyceride catabolic process / very-low-density lipoprotein particle assembly / low-density lipoprotein particle clearance / chylomicron remnant / intermediate-density lipoprotein particle / Chylomicron clearance / Chylomicron remodeling / cellular response to lipoprotein particle stimulus / Chylomicron assembly / LDL clearance / Regulation of TLR by endogenous ligand / positive regulation of lipid storage / chylomicron / lipoprotein catabolic process / flagellated sperm motility / low-density lipoprotein particle / lipoprotein biosynthetic process / cholesterol transfer activity / cholesterol transport / very-low-density lipoprotein particle / low-density lipoprotein particle remodeling / positive regulation of macrophage derived foam cell differentiation / fertilization / cholesterol efflux / artery morphogenesis / Scavenging by Class A Receptors / lipoprotein transport / low-density lipoprotein particle receptor binding / Scavenging by Class F Receptors / Platelet sensitization by LDL / endoplasmic reticulum exit site / smooth endoplasmic reticulum / cholesterol metabolic process / Retinoid metabolism and transport / lipid droplet / endocytic vesicle lumen / lysosomal lumen / cholesterol homeostasis / endosome lumen / Cell surface interactions at the vascular wall / post-embryonic development / Post-translational protein phosphorylation / establishment of localization in cell / clathrin-coated endocytic vesicle membrane / Heme signaling / phospholipid binding / response to virus / Regulation of Insulin-like Growth Factor (IGF) transport and uptake by Insulin-like Growth Factor Binding Proteins (IGFBPs) / Cargo recognition for clathrin-mediated endocytosis / nervous system development / heparin binding / Clathrin-mediated endocytosis / spermatogenesis / in utero embryonic development / early endosome / endosome membrane / receptor ligand activity / endoplasmic reticulum lumen / neuronal cell body / intracellular membrane-bounded organelle / positive regulation of gene expression / endoplasmic reticulum membrane / extracellular space / extracellular exosome / extracellular region / plasma membrane / cytoplasm / cytosol 類似検索 - 分子機能 | ||||||||||||||||||||||||
| 生物種 | Homo sapiens (ヒト) | ||||||||||||||||||||||||
| 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: 5.4 Å | ||||||||||||||||||||||||
データ登録者 | Dearborn, A.D. / Reimund, M. / Graziano, G. / Lei, H. / Kumar, A. / Neufeld, E.B. / Remaley, A.T. / Marcotrigiano, J. | ||||||||||||||||||||||||
| 資金援助 | 米国, 1件
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引用 | ジャーナル: Nature / 年: 2025タイトル: Structure of apolipoprotein B100 bound to the low-density lipoprotein receptor. 著者: Mart Reimund / Altaira D Dearborn / Giorgio Graziano / Haotian Lei / Anthony M Ciancone / Ashish Kumar / Ronald Holewinski / Edward B Neufeld / Francis J O'Reilly / Alan T Remaley / Joseph Marcotrigiano / ![]() 要旨: Apolipoprotein B100 (apoB100) is a structural component of low-density lipoprotein (LDL) and a ligand for the LDL receptor (LDLR). Mutations in apoB100 or in LDLR cause familial ...Apolipoprotein B100 (apoB100) is a structural component of low-density lipoprotein (LDL) and a ligand for the LDL receptor (LDLR). Mutations in apoB100 or in LDLR cause familial hypercholesterolaemia, an autosomal dominant disease that is characterized by a marked increase in LDL cholesterol (LDL-C) and a higher risk of cardiovascular disease. The structure of apoB100 on LDL and its interaction with LDLR are poorly understood. Here we present the cryo-electron microscopy structures of apoB100 on LDL bound to the LDLR and a nanobody complex, which can form a C-symmetric, higher-order complex. Using local refinement, we determined high-resolution structures of the interfaces between apoB100 and LDLR. One binding interface is formed between several small-ligand-binding modules of LDLR and a series of basic patches that are scattered along a β-belt formed by apoB100, encircling LDL. The other binding interface is formed between the β-propeller domain of LDLR and the N-terminal domain of apoB100. Our results reveal how both interfaces are involved in LDL dimer formation, and how LDLR cycles between LDL- and self-bound conformations. In addition, known mutations in either apoB100 or LDLR, associated with high levels of LDL-C, are located at the LDL-LDLR interface. | ||||||||||||||||||||||||
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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 | 9bd1.cif.gz | 271.3 KB | 表示 | PDBx/mmCIF形式 |
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| PDB形式 | pdb9bd1.ent.gz | 表示 | PDB形式 | |
| PDBx/mmJSON形式 | 9bd1.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/bd/9bd1 ftp://data.pdbj.org/pub/pdb/validation_reports/bd/9bd1 | HTTPS FTP |
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-関連構造データ
| 関連構造データ | ![]() 44443MC ![]() 9bd8C ![]() 9bdeC ![]() 9bdtC ![]() 9cooC M: このデータのモデリングに利用したマップデータ 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 F&H 検索 |
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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 | 分子量: 516167.469 Da / 分子数: 1 / 由来タイプ: 天然 / 由来: (天然) Homo sapiens (ヒト) / 参照: UniProt: P04114 |
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| #2: 糖 | ChemComp-NAG / |
| 研究の焦点であるリガンドがあるか | N |
| Has protein modification | Y |
-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 | 実験値: NO | ||||||||||||||||||||||||||||||||||||
| 由来(天然) |
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| 由来(組換発現) |
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| 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 | ||||||||||||||||||||||||||||||||||||
| 試料支持 | グリッドの材料: GOLD / グリッドのサイズ: 300 divisions/in. / グリッドのタイプ: C-flat-1.2/1.3 | ||||||||||||||||||||||||||||||||||||
| 急速凍結 | 装置: FEI VITROBOT MARK IV / 凍結剤: ETHANE / 湿度: 100 % / 凍結前の試料温度: 277 K |
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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: 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): 2000 nm / 最小 デフォーカス(公称値): 600 nm |
| 撮影 | 電子線照射量: 51.38 e/Å2 フィルム・検出器のモデル: GATAN K3 BIOCONTINUUM (6k x 4k) |
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解析
| EMソフトウェア | 名称: PHENIX / バージョン: 1.21_5207 / カテゴリ: モデル精密化 | ||||||||||||||||||||||||
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| CTF補正 | タイプ: PHASE FLIPPING AND AMPLITUDE CORRECTION | ||||||||||||||||||||||||
| 3次元再構成 | 解像度: 5.4 Å / 解像度の算出法: FSC 0.143 CUT-OFF / 粒子像の数: 287079 / 対称性のタイプ: POINT | ||||||||||||||||||||||||
| 精密化 | 交差検証法: NONE 立体化学のターゲット値: GeoStd + Monomer Library + CDL v1.2 | ||||||||||||||||||||||||
| 原子変位パラメータ | Biso mean: 284.69 Å2 | ||||||||||||||||||||||||
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万見について




Homo sapiens (ヒト)
米国, 1件
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FIELD EMISSION GUN