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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: 9hjd | |||||||||||||||||||||||||||
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| タイトル | Cryo-EM structure of domperidone-bound human SLC19A3 in inward-open state | |||||||||||||||||||||||||||
要素 |
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キーワード | MEMBRANE PROTEIN / Thiamine transporter / drug interaction / thiamine deficiency | |||||||||||||||||||||||||||
| 機能・相同性 | 機能・相同性情報pyridoxine transport / thiamine-containing compound metabolic process / Vitamin B1 (thiamin) metabolism / thiamine transmembrane transport / thiamine transmembrane transporter activity / thiamine transport / thiamine diphosphate biosynthetic process / 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: 3.35 Å | |||||||||||||||||||||||||||
データ登録者 | Gabriel, F. / Loew, C. | |||||||||||||||||||||||||||
| 資金援助 | 1件
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引用 | ジャーナル: Br J Pharmacol / 年: 2025タイトル: Structure-based discovery of thiamine uptake inhibitors. 著者: Florian Gabriel / Björn Windshügel / Christian Löw / ![]() 要旨: BACKGROUND AND PURPOSE: Thiamine (vitamin B) is an essential coenzyme and catalyses various reactions in central metabolic pathways. Since mammals have lost the ability to synthesise thiamine de ...BACKGROUND AND PURPOSE: Thiamine (vitamin B) is an essential coenzyme and catalyses various reactions in central metabolic pathways. Since mammals have lost the ability to synthesise thiamine de novo, this micronutrient has to be imported via the high affinity solute carriers SLC19A2 and A3 across the plasma membrane. Perturbations of these transport systems have severe effects on human health. Recent structural work on SLC19A2 and A3 have provided molecular insights into substrate and drug recognition and conformational changes during transport. Based on the analysis of the available SLC19A3 structures, we hypothesise that the binding site is rather promiscuous, allowing different small molecules to interact and potentially inhibit this transporter. EXPERIMENTAL APPROACH: We employed a computational approach, by which 538 approved and investigational drugs were docked into an ensemble of SLC19A3 cryo-EM structures, followed by experimental ...EXPERIMENTAL APPROACH: We employed a computational approach, by which 538 approved and investigational drugs were docked into an ensemble of SLC19A3 cryo-EM structures, followed by experimental binding studies, transport inhibition assays, and structural validation. KEY RESULTS: Eight novel compounds were identified that bind and inhibit SLC19A3. To visualise such a new drug interaction, we determined the cryo-EM structure of SLC19A3 bound to domperidone, a ...KEY RESULTS: Eight novel compounds were identified that bind and inhibit SLC19A3. To visualise such a new drug interaction, we determined the cryo-EM structure of SLC19A3 bound to domperidone, a dopamine D receptor antagonist used for the treatment of nausea and gastrointestinal disorders. Our computational work together with biochemical and cellular transport assays expands the understanding of SLC19A3-drug interactions, highlights the power of virtual screening approaches using structural ensembles, and provides a three-dimensional pharmacophore model for SLC19A3 inhibitors. CONCLUSION AND IMPLICATIONS: These findings offer a basis for addressing drug-induced thiamine deficiencies and pre approach can be used to optimise pharmacological strategies involving SLC19A3- ...CONCLUSION AND IMPLICATIONS: These findings offer a basis for addressing drug-induced thiamine deficiencies and pre approach can be used to optimise pharmacological strategies involving SLC19A3-interacting compounds in the future. | |||||||||||||||||||||||||||
| 履歴 |
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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 | 9hjd.cif.gz | 106.6 KB | 表示 | PDBx/mmCIF形式 |
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| PDB形式 | pdb9hjd.ent.gz | 表示 | PDB形式 | |
| PDBx/mmJSON形式 | 9hjd.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/hj/9hjd ftp://data.pdbj.org/pub/pdb/validation_reports/hj/9hjd | HTTPS FTP |
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-関連構造データ
| 関連構造データ | ![]() 52213MC 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: 抗体 | 分子量: 15205.778 Da / 分子数: 1 / 由来タイプ: 組換発現 / 由来: (組換発現) ![]() ![]() |
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| #2: タンパク質 | 分子量: 59687.609 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: SLC19A3 / 発現宿主: ![]() |
| #3: 化合物 | ChemComp-A1IVJ / 分子量: 425.911 Da / 分子数: 1 / 由来タイプ: 合成 / 式: C22H24ClN5O2 / タイプ: SUBJECT OF INVESTIGATION |
| #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 |
-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: hSLC19A3:Nb3.3:domperidone / タイプ: COMPLEX / Entity ID: #1-#2 / 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: ![]() |
| 緩衝液 | pH: 7.4 詳細: 20 mM Tris-HCl, 150 mM NaCl, 0.002% LMNG, 0.0002% CHS, 0.25 mM domperidone |
| 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-PROPANE |
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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): 1700 nm / 最小 デフォーカス(公称値): 500 nm |
| 撮影 | 電子線照射量: 60 e/Å2 フィルム・検出器のモデル: FEI FALCON IV (4k x 4k) |
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解析
| CTF補正 | タイプ: PHASE FLIPPING ONLY | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
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| 3次元再構成 | 解像度: 3.35 Å / 解像度の算出法: FSC 0.143 CUT-OFF / 粒子像の数: 427625 / 対称性のタイプ: POINT | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| 精密化 | 解像度: 3.35→3.35 Å / Cor.coef. Fo:Fc: 0.473 / WRfactor Rwork: 0.521 / Average fsc free: 0 / Average fsc overall: 0.5236 / Average fsc work: 0.5236 / ESU R: 0.086 / 詳細: Hydrogens have been added in their riding positions
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| 溶媒の処理 | 溶媒モデル: NONE | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| 原子変位パラメータ | Biso mean: 39.364 Å2 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| 拘束条件 |
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コントローラー
万見について





Homo sapiens (ヒト)
引用

PDBj








FIELD EMISSION GUN