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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: 8vvc | |||||||||
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| タイトル | Cryo-EM structure of human ABC transporter (hABCC1) with nucleotide-binding domain 2 | |||||||||
要素 | Multidrug resistance-associated protein 1 | |||||||||
キーワード | MEMBRANE PROTEIN / cGAMP exporter / multidrug-resistant protein / ABC transporter | |||||||||
| 機能・相同性 | 機能・相同性情報ATPase-coupled carboxylic acid transmembrane transporter activity / pigment accumulation / antigen processing and presentation of lipid antigen via MHC class Ib / sphingolipid translocation / intracellular nitrogen homeostasis / granuloma formation / ABC-type vitamin B12 transporter activity / Transport of RCbl within the body / cyclic nucleotide transport / NK T cell activation ...ATPase-coupled carboxylic acid transmembrane transporter activity / pigment accumulation / antigen processing and presentation of lipid antigen via MHC class Ib / sphingolipid translocation / intracellular nitrogen homeostasis / granuloma formation / ABC-type vitamin B12 transporter activity / Transport of RCbl within the body / cyclic nucleotide transport / NK T cell activation / bilirubin transmembrane transporter activity / neural tissue regeneration / amygdala development / cobalamin transport / sphingolipid intramembrane carrier activity / lymphocyte migration / glutathione transmembrane transport / endothelium development / carboxylic acid transmembrane transport / leukotriene transport / glucocorticoid metabolic process / glutathione transmembrane transporter activity / leukotriene metabolic process / ABC-type glutathione-S-conjugate transporter / Synthesis of Leukotrienes (LT) and Eoxins (EX) / carboxylic acid transmembrane transporter activity / ABC-type glutathione S-conjugate transporter activity / sphingolipid biosynthetic process / Sphingolipid de novo biosynthesis / : / macrophage activation / tissue homeostasis / heme catabolic process / xenobiotic transport across blood-brain barrier / response to fluid shear stress / endothelial cell apoptotic process / ATPase-coupled lipid transmembrane transporter activity / leukotriene biosynthetic process / export across plasma membrane / Paracetamol ADME / inflammatory response to antigenic stimulus / NFE2L2 regulating MDR associated enzymes / transepithelial transport / ABC-type xenobiotic transporter / hydrogen peroxide biosynthetic process / protein localization to cell surface / superoxide anion generation / Heme degradation / ABC-type xenobiotic transporter activity / phospholipid translocation / exploration behavior / amyloid-beta clearance / ATPase-coupled transmembrane transporter activity / efflux transmembrane transporter activity / lateral plasma membrane / amyloid-beta metabolic process / xenobiotic transmembrane transporter activity / xenobiotic transport / ABC-type transporter activity / transport across blood-brain barrier / xenobiotic metabolic process / neurogenesis / cell redox homeostasis / establishment of localization in cell / response to glucocorticoid / basal plasma membrane / blood vessel diameter maintenance / cell chemotaxis / hippocampus development / glutathione metabolic process / regulation of membrane potential / Cytoprotection by HMOX1 / ABC-family protein mediated transport / cellular response to type II interferon / transmembrane transport / response to toxic substance / multicellular organism growth / cellular response to amyloid-beta / memory / positive regulation of inflammatory response / cellular response to oxidative stress / gene expression / basolateral plasma membrane / apical plasma membrane / defense response to Gram-positive bacterium / response to xenobiotic stimulus / ATP hydrolysis activity / extracellular exosome / ATP binding / membrane / 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: 4.32 Å | |||||||||
データ登録者 | Shinde, O. / Li, P. | |||||||||
| 資金援助 | 米国, 2件
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引用 | ジャーナル: Immunity / 年: 2025タイトル: Structures of ATP-binding cassette transporter ABCC1 reveal the molecular basis of cyclic dinucleotide cGAMP export. 著者: Omkar Shinde / Joshua A Boyer / Stephanie Cambier / Jordyn J VanPortfliet / Xuewu Sui / Gaya P Yadav / Elizabeth G Viverette / Mario J Borgnia / A Phillip West / Qi Zhang / Daniel B Stetson / Pingwei Li / ![]() 要旨: Cyclic nucleotide GMP-AMP (cGAMP) plays a critical role in mediating the innate immune response through the cyclic GMP-AMP synthase (cGAS)-stimulator of interferon genes (STING) pathway. Recent ...Cyclic nucleotide GMP-AMP (cGAMP) plays a critical role in mediating the innate immune response through the cyclic GMP-AMP synthase (cGAS)-stimulator of interferon genes (STING) pathway. Recent studies showed that ATP-binding cassette subfamily C member 1 (ABCC1) is a cGAMP exporter. The exported cGAMP can be imported into uninfected cells to stimulate a STING-mediated innate immune response. However, the molecular basis of cGAMP export mediated by ABCC1 remains unclear. Here, we report the cryoelectron microscopy (cryo-EM) structures of human ABCC1 in a ligand-free state and a cGAMP-bound state. These structures reveal that ABCC1 forms a homodimer via its N-terminal transmembrane domain. The ligand-bound structure shows that cGAMP is recognized by a positively charged pocket. Mutagenesis and functional studies confirmed the roles of the ligand-binding pocket in cGAMP recognition and export. This study provides insights into the structure and function of ABCC1 as a cGAMP exporter and lays a foundation for future research targeting ABCC1 in infection and anti-cancer immunity. | |||||||||
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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 | 8vvc.cif.gz | 268.5 KB | 表示 | PDBx/mmCIF形式 |
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| PDB形式 | pdb8vvc.ent.gz | 210.6 KB | 表示 | PDB形式 |
| PDBx/mmJSON形式 | 8vvc.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/vv/8vvc ftp://data.pdbj.org/pub/pdb/validation_reports/vv/8vvc | HTTPS FTP |
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-関連構造データ
| 関連構造データ | ![]() 43550MC ![]() 8vt4C ![]() 8vuxC 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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| 1 |
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要素
| #1: タンパク質 | 分子量: 171762.953 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: ABCC1, MRP, MRP1 / 発現宿主: Homo sapiens (ヒト)参照: UniProt: P33527, ABC-type xenobiotic transporter, ABC-type glutathione-S-conjugate transporter |
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| 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 | 名称: Human ABC transporter (hABCC1) with nucleotide-binding domain 2 タイプ: COMPLEX / Entity ID: all / 由来: RECOMBINANT | |||||||||||||||||||||||||
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| 分子量 | 値: 0.199 MDa / 実験値: YES | |||||||||||||||||||||||||
| 由来(天然) | 生物種: Homo sapiens (ヒト) | |||||||||||||||||||||||||
| 由来(組換発現) | 生物種: Homo sapiens (ヒト) | |||||||||||||||||||||||||
| 緩衝液 | pH: 7.5 | |||||||||||||||||||||||||
| 緩衝液成分 |
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| 試料 | 濃度: 2 mg/ml / 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: COPPER / グリッドのサイズ: 300 divisions/in. / グリッドのタイプ: Quantifoil R1.2/1.3 | |||||||||||||||||||||||||
| 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: SPOT SCAN |
| 電子レンズ | モード: OTHER / 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: 58 e/Å2 / フィルム・検出器のモデル: GATAN K3 (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: 4.32 Å / 解像度の算出法: FSC 0.143 CUT-OFF / 粒子像の数: 128244 / 対称性のタイプ: POINT |
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万見について




Homo sapiens (ヒト)
米国, 2件
引用




PDBj





FIELD EMISSION GUN