+データを開く
-基本情報
登録情報 | データベース: PDB / ID: 7roq | ||||||
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タイトル | Alternative Structure of Human ABCA1 | ||||||
要素 | Phospholipid-transporting ATPase ABCA1 | ||||||
キーワード | LIPID TRANSPORT / ABCA1 atherosclerosis lipid export protein modeling transport mechanism | ||||||
機能・相同性 | 機能・相同性情報 signal release / sphingolipid floppase activity / regulation of high-density lipoprotein particle assembly / apolipoprotein A-I receptor activity / positive regulation of high-density lipoprotein particle assembly / Defective ABCA1 causes TGD / response to vitamin B3 / apolipoprotein A-I binding / platelet dense granule organization / intracellular cholesterol transport ...signal release / sphingolipid floppase activity / regulation of high-density lipoprotein particle assembly / apolipoprotein A-I receptor activity / positive regulation of high-density lipoprotein particle assembly / Defective ABCA1 causes TGD / response to vitamin B3 / apolipoprotein A-I binding / platelet dense granule organization / intracellular cholesterol transport / high-density lipoprotein particle binding / phospholipid transporter activity / protein transmembrane transport / response to laminar fluid shear stress / floppase activity / HDL assembly / phosphatidylserine floppase activity / cellular response to cholesterol / peptide secretion / phosphatidylcholine floppase activity / phospholipid homeostasis / phosphatidylcholine binding / phospholipid efflux / reverse cholesterol transport / export across plasma membrane / cholesterol transfer activity / high-density lipoprotein particle assembly / lipoprotein biosynthetic process / P-type phospholipid transporter / regulation of Cdc42 protein signal transduction / phospholipid translocation / syntaxin binding / cholesterol efflux / endosomal transport / phagocytosis, engulfment / intracellular vesicle / lysosome organization / cholesterol binding / negative regulation of cholesterol storage / cellular response to cytokine stimulus / apolipoprotein binding / negative regulation of macrophage derived foam cell differentiation / cellular response to low-density lipoprotein particle stimulus / protein secretion / endocytic vesicle / protein transmembrane transporter activity / ATPase-coupled transmembrane transporter activity / positive regulation of cholesterol efflux / ABC-type transporter activity / cellular response to retinoic acid / NR1H3 & NR1H2 regulate gene expression linked to cholesterol transport and efflux / phagocytic vesicle / cholesterol metabolic process / cholesterol homeostasis / adenylate cyclase-activating G protein-coupled receptor signaling pathway / PPARA activates gene expression / small GTPase binding / cellular response to xenobiotic stimulus / ATPase binding / basolateral plasma membrane / cellular response to lipopolysaccharide / endosome / membrane raft / G protein-coupled receptor signaling pathway / external side of plasma membrane / intracellular membrane-bounded organelle / signaling receptor binding / endoplasmic reticulum membrane / perinuclear region of cytoplasm / Golgi apparatus / ATP hydrolysis activity / ATP binding / plasma membrane 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: 4.1 Å | ||||||
データ登録者 | Aller, S.G. | ||||||
資金援助 | 米国, 1件
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引用 | ジャーナル: Cell / 年: 2017 タイトル: Structure of the Human Lipid Exporter ABCA1. 著者: Hongwu Qian / Xin Zhao / Pingping Cao / Jianlin Lei / Nieng Yan / Xin Gong / 要旨: ABCA1, an ATP-binding cassette (ABC) subfamily A exporter, mediates the cellular efflux of phospholipids and cholesterol to the extracellular acceptor apolipoprotein A-I (apoA-I) for generation of ...ABCA1, an ATP-binding cassette (ABC) subfamily A exporter, mediates the cellular efflux of phospholipids and cholesterol to the extracellular acceptor apolipoprotein A-I (apoA-I) for generation of nascent high-density lipoprotein (HDL). Mutations of human ABCA1 are associated with Tangier disease and familial HDL deficiency. Here, we report the cryo-EM structure of human ABCA1 with nominal resolutions of 4.1 Å for the overall structure and 3.9 Å for the massive extracellular domain. The nucleotide-binding domains (NBDs) display a nucleotide-free state, while the two transmembrane domains (TMDs) contact each other through a narrow interface in the intracellular leaflet of the membrane. In addition to TMDs and NBDs, two extracellular domains of ABCA1 enclose an elongated hydrophobic tunnel. Structural mapping of dozens of disease-related mutations allows potential interpretation of their diverse pathogenic mechanisms. Structural-based analysis suggests a plausible "lateral access" mechanism for ABCA1-mediated lipid export that may be distinct from the conventional alternating-access paradigm. | ||||||
履歴 |
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Remark 0 | THIS ENTRY 7ROQ REFLECTS AN ALTERNATIVE MODELING OF THE STRUCTURAL DATA IN EMD-6724 ORIGINAL DATA ...THIS ENTRY 7ROQ REFLECTS AN ALTERNATIVE MODELING OF THE STRUCTURAL DATA IN EMD-6724 ORIGINAL DATA DETERMINED BYAUTHOR: H.W.Qian,N.Yan,X.Gong |
-構造の表示
ムービー |
ムービービューア |
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構造ビューア | 分子: MolmilJmol/JSmol |
-ダウンロードとリンク
-ダウンロード
PDBx/mmCIF形式 | 7roq.cif.gz | 337.3 KB | 表示 | PDBx/mmCIF形式 |
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PDB形式 | pdb7roq.ent.gz | 265.9 KB | 表示 | PDB形式 |
PDBx/mmJSON形式 | 7roq.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
文書・要旨 | 7roq_validation.pdf.gz | 1.1 MB | 表示 | wwPDB検証レポート |
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文書・詳細版 | 7roq_full_validation.pdf.gz | 1.1 MB | 表示 | |
XML形式データ | 7roq_validation.xml.gz | 53.9 KB | 表示 | |
CIF形式データ | 7roq_validation.cif.gz | 80.2 KB | 表示 | |
アーカイブディレクトリ | https://data.pdbj.org/pub/pdb/validation_reports/ro/7roq ftp://data.pdbj.org/pub/pdb/validation_reports/ro/7roq | HTTPS FTP |
-関連構造データ
関連構造データ | 6724M M: このデータのモデリングに利用したマップデータ |
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類似構造データ | |
電子顕微鏡画像生データ | EMPIAR-10798 (タイトル: Cryo-EM micrographs of human ABCA1 / Data size: 16.3 TB Data #1: The micrographs are the movie stacks (32 frames) after motion corrected with MotionCorr and binned 2-fold, resulting in a pixel size of 1.307 Å/pixel. [micrographs - multiframe]) |
-リンク
-集合体
登録構造単位 |
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1 |
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-要素
-タンパク質 , 1種, 1分子 A
#1: タンパク質 | 分子量: 259512.984 Da / 分子数: 1 / 由来タイプ: 組換発現 / 由来: (組換発現) Homo sapiens (ヒト) / 遺伝子: ABCA1, ABC1, CERP 発現宿主: Spodoptera frugiperda (ツマジロクサヨトウ) 参照: UniProt: O95477, P-type phospholipid transporter |
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-糖 , 3種, 5分子
#2: 多糖 | alpha-D-mannopyranose-(1-3)-[alpha-D-mannopyranose-(1-6)]beta-D-mannopyranose-(1-4)-2-acetamido-2- ...alpha-D-mannopyranose-(1-3)-[alpha-D-mannopyranose-(1-6)]beta-D-mannopyranose-(1-4)-2-acetamido-2-deoxy-beta-D-glucopyranose-(1-4)-2-acetamido-2-deoxy-beta-D-glucopyranose |
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#3: 多糖 | 2-acetamido-2-deoxy-beta-D-glucopyranose-(1-4)-2-acetamido-2-deoxy-beta-D-glucopyranose |
#4: 糖 |
-非ポリマー , 2種, 3分子
#5: 化合物 | ChemComp-POV / ( |
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#6: 化合物 |
-詳細
研究の焦点であるリガンドがあるか | 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 |
-試料調製
構成要素 | 名称: ABCA1 / タイプ: CELL / Entity ID: #1 / 由来: RECOMBINANT |
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由来(天然) | 生物種: Homo sapiens (ヒト) |
由来(組換発現) | 生物種: Spodoptera frugiperda (ツマジロクサヨトウ) |
緩衝液 | pH: 8 |
試料 | 濃度: 10 mg/ml / 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 |
-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 |
撮影 | 電子線照射量: 1.56 e/Å2 フィルム・検出器のモデル: GATAN K2 SUMMIT (4k x 4k) |
-解析
ソフトウェア | 名称: PHENIX / バージョン: 1.19.2_4158: / 分類: 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: 4.1 Å / 解像度の算出法: FSC 0.143 CUT-OFF / 粒子像の数: 790156 / 対称性のタイプ: POINT | ||||||||||||||||||||||||
拘束条件 |
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