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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 | |||||||||
![]() | Multidrug resistance-associated protein 1 | |||||||||
![]() | MEMBRANE PROTEIN / cGAMP exporter / multidrug-resistant protein / ABC transporter | |||||||||
機能・相同性 | ![]() sphingolipid translocation / cyclic nucleotide transport / Transport of RCbl within the body / ABC-type vitamin B12 transporter activity / carboxylic acid transmembrane transport / carboxylic acid transmembrane transporter activity / cobalamin transport / sphingolipid transporter activity / leukotriene transport / glutathione transmembrane transport ...sphingolipid translocation / cyclic nucleotide transport / Transport of RCbl within the body / ABC-type vitamin B12 transporter activity / carboxylic acid transmembrane transport / carboxylic acid transmembrane transporter activity / cobalamin transport / sphingolipid transporter activity / leukotriene transport / glutathione transmembrane transport / ABC-type glutathione-S-conjugate transporter / ABC-type glutathione S-conjugate transporter activity / glutathione transmembrane transporter activity / leukotriene metabolic process / Synthesis of Leukotrienes (LT) and Eoxins (EX) / ATPase-coupled inorganic anion transmembrane transporter activity / sphingolipid biosynthetic process / Sphingolipid de novo biosynthesis / heme catabolic process / xenobiotic transport across blood-brain barrier / transepithelial transport / ATPase-coupled lipid transmembrane transporter activity / export across plasma membrane / Paracetamol ADME / NFE2L2 regulating MDR associated enzymes / ABC-type xenobiotic transporter / ABC-type xenobiotic transporter activity / phospholipid translocation / xenobiotic transport / Heme degradation / efflux transmembrane transporter activity / xenobiotic transmembrane transporter activity / ATPase-coupled transmembrane transporter activity / lateral plasma membrane / ABC-type transporter activity / transport across blood-brain barrier / xenobiotic metabolic process / basal plasma membrane / cell chemotaxis / Cytoprotection by HMOX1 / ABC-family proteins mediated transport / transmembrane transport / positive regulation of inflammatory response / cellular response to amyloid-beta / cellular response to oxidative stress / basolateral plasma membrane / apical plasma membrane / 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 | ![]() | |||||||||
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 | |||||||||
![]() | Shinde, O. / Li, P. | |||||||||
資金援助 | ![]()
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![]() | ![]() 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. | |||||||||
履歴 |
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構造の表示
構造ビューア | 分子: ![]() ![]() |
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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 | ![]() | 268.5 KB | 表示 | ![]() |
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PDB形式 | ![]() | 210.6 KB | 表示 | ![]() |
PDBx/mmJSON形式 | ![]() | ツリー表示 | ![]() | |
その他 | ![]() |
-検証レポート
アーカイブディレクトリ | ![]() ![]() | 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 ![]() |
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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: 171762.953 Da / 分子数: 1 / 由来タイプ: 組換発現 / 由来: (組換発現) ![]() ![]() 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: ![]() | |||||||||||||||||||||||||
由来(組換発現) | 生物種: ![]() | |||||||||||||||||||||||||
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: ![]() |
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 |