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基本情報
登録情報 | ![]() | |||||||||
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タイトル | Human OCT1 bound to thiamine in inward-open conformation | |||||||||
![]() | Human OCT1 bound to thiamine in inward-open conformation | |||||||||
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![]() | membrane protein / MFS / drug transporter / TRANSPORT PROTEIN | |||||||||
機能・相同性 | ![]() putrescine transmembrane transporter activity / acetylcholine transport / (R)-carnitine transmembrane transporter activity / O-acyl-L-carnitine transmembrane transport / pyrimidine nucleoside transmembrane transporter activity / serotonin transport / spermidine transmembrane transporter activity / quaternary ammonium group transmembrane transporter activity / organic cation transport / epinephrine transport ...putrescine transmembrane transporter activity / acetylcholine transport / (R)-carnitine transmembrane transporter activity / O-acyl-L-carnitine transmembrane transport / pyrimidine nucleoside transmembrane transporter activity / serotonin transport / spermidine transmembrane transporter activity / quaternary ammonium group transmembrane transporter activity / organic cation transport / epinephrine transport / purine-containing compound transmembrane transport / quaternary ammonium group transport / acetylcholine transmembrane transporter activity / Organic cation transport / organic cation transmembrane transporter activity / spermidine transport / putrescine transport / dopamine uptake / thiamine transmembrane transport / thiamine transmembrane transporter activity / thiamine transport / metanephric proximal tubule development / norepinephrine:sodium symporter activity / toxin transmembrane transporter activity / norepinephrine transport / prostaglandin transport / dopamine:sodium symporter activity / prostaglandin transmembrane transporter activity / Norepinephrine Neurotransmitter Release Cycle / Abacavir transmembrane transport / neurotransmitter transmembrane transporter activity / serotonin uptake / establishment or maintenance of transmembrane electrochemical gradient / dopamine transport / Neurotransmitter clearance / monoamine transmembrane transporter activity / xenobiotic transport across blood-brain barrier / monoamine transport / organic anion transmembrane transporter activity / Ciprofloxacin ADME / Na+/Cl- dependent neurotransmitter transporters / cellular detoxification / xenobiotic transport / neurotransmitter transport / lateral plasma membrane / xenobiotic transmembrane transporter activity / transport across blood-brain barrier / xenobiotic metabolic process / basal plasma membrane / presynapse / basolateral plasma membrane / apical plasma membrane / identical protein binding / membrane / plasma membrane 類似検索 - 分子機能 | |||||||||
生物種 | ![]() | |||||||||
手法 | 単粒子再構成法 / クライオ電子顕微鏡法 / 解像度: 3.13 Å | |||||||||
![]() | Zeng YC / Sobti M / Stewart AG | |||||||||
資金援助 | ![]()
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![]() | ![]() タイトル: Structural basis of promiscuous substrate transport by Organic Cation Transporter 1. 著者: Yi C Zeng / Meghna Sobti / Ada Quinn / Nicola J Smith / Simon H J Brown / Jamie I Vandenberg / Renae M Ryan / Megan L O'Mara / Alastair G Stewart / ![]() 要旨: Organic Cation Transporter 1 (OCT1) plays a crucial role in hepatic metabolism by mediating the uptake of a range of metabolites and drugs. Genetic variations can alter the efficacy and safety of ...Organic Cation Transporter 1 (OCT1) plays a crucial role in hepatic metabolism by mediating the uptake of a range of metabolites and drugs. Genetic variations can alter the efficacy and safety of compounds transported by OCT1, such as those used for cardiovascular, oncological, and psychological indications. Despite its importance in drug pharmacokinetics, the substrate selectivity and underlying structural mechanisms of OCT1 remain poorly understood. Here, we present cryo-EM structures of full-length human OCT1 in the inward-open conformation, both ligand-free and drug-bound, indicating the basis for its broad substrate recognition. Comparison of our structures with those of outward-open OCTs provides molecular insight into the alternating access mechanism of OCTs. We observe that hydrophobic gates stabilize the inward-facing conformation, whereas charge neutralization in the binding pocket facilitates the release of cationic substrates. These findings provide a framework for understanding the structural basis of the promiscuity of drug binding and substrate translocation in OCT1. | |||||||||
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マップデータ | ![]() | 59.7 MB | ![]() | |
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ヘッダ (付随情報) | ![]() ![]() | 17.4 KB 17.4 KB | 表示 表示 | ![]() |
FSC (解像度算出) | ![]() | 8.4 KB | 表示 | ![]() |
画像 | ![]() | 90.5 KB | ||
Filedesc metadata | ![]() | 6.4 KB | ||
その他 | ![]() ![]() | 59.4 MB 59.4 MB | ||
アーカイブディレクトリ | ![]() ![]() | HTTPS FTP |
-検証レポート
文書・要旨 | ![]() | 754.5 KB | 表示 | ![]() |
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文書・詳細版 | ![]() | 754.1 KB | 表示 | |
XML形式データ | ![]() | 16.2 KB | 表示 | |
CIF形式データ | ![]() | 21 KB | 表示 | |
アーカイブディレクトリ | ![]() ![]() | HTTPS FTP |
-関連構造データ
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リンク
EMDBのページ | ![]() ![]() |
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「今月の分子」の関連する項目 |
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マップ
ファイル | ![]() | ||||||||||||||||||||
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注釈 | Human OCT1 bound to thiamine in inward-open conformation | ||||||||||||||||||||
ボクセルのサイズ | X=Y=Z: 0.84 Å | ||||||||||||||||||||
密度 |
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対称性 | 空間群: 1 | ||||||||||||||||||||
詳細 | EMDB XML:
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-添付データ
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試料の構成要素
-全体 : Human OCT1
全体 | 名称: Human OCT1 |
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要素 |
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-超分子 #1: Human OCT1
超分子 | 名称: Human OCT1 / タイプ: complex / ID: 1 / 親要素: 0 / 含まれる分子: #1 |
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由来(天然) | 生物種: ![]() |
-分子 #1: Solute carrier family 22 member 1
分子 | 名称: Solute carrier family 22 member 1 / タイプ: protein_or_peptide / ID: 1 / コピー数: 1 / 光学異性体: LEVO |
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由来(天然) | 生物種: ![]() |
分子量 | 理論値: 61.200664 KDa |
組換発現 | 生物種: ![]() |
配列 | 文字列: MPTVDDILEQ VGESGWFQKQ AFLILCLLSA AFAPICVGIV FLGFTPDHHC QSPGVAELSQ RCGWSPAEEL NYTVPGLGPA GEAFLGQCR RYEVDWNQSA LSCVDPLASL ATNRSHLPLG PCQDGWVYDT PGSSIVTEFN LVCADSWKLD LFQSCLNAGF L FGSLGVGY ...文字列: MPTVDDILEQ VGESGWFQKQ AFLILCLLSA AFAPICVGIV FLGFTPDHHC QSPGVAELSQ RCGWSPAEEL NYTVPGLGPA GEAFLGQCR RYEVDWNQSA LSCVDPLASL ATNRSHLPLG PCQDGWVYDT PGSSIVTEFN LVCADSWKLD LFQSCLNAGF L FGSLGVGY FADRFGRKLC LLGTVLVNAV SGVLMAFSPN YMSMLLFRLL QGLVSKGNWM AGYTLITEFV GSGSRRTVAI MY QMAFTVG LVALTGLAYA LPHWRWLQLA VSLPTFLFLL YYWCVPESPR WLLSQKRNTE AIKIMDHIAQ KNGKLPPADL KML SLEEDV TEKLSPSFAD LFRTPRLRKR TFILMYLWFT DSVLYQGLIL HMGATSGNLY LDFLYSALVE IPGAFIALIT IDRV GRIYP MAMSNLLAGA ACLVMIFISP DLHWLNIIIM CVGRMGITIA IQMICLVNAE LYPTFVRNLG VMVCSSLCDI GGIIT PFIV FRLREVWQAL PLILFAVLGL LAAGVTLLLP ETKGVALPET MKDAENLGRK AKPKENTIYL KVQTSEPSGT UniProtKB: Solute carrier family 22 member 1 |
-分子 #2: 3-(4-AMINO-2-METHYL-PYRIMIDIN-5-YLMETHYL)-5-(2-HYDROXY-ETHYL)-4-M...
分子 | 名称: 3-(4-AMINO-2-METHYL-PYRIMIDIN-5-YLMETHYL)-5-(2-HYDROXY-ETHYL)-4-METHYL-THIAZOL-3-IUM タイプ: ligand / ID: 2 / コピー数: 1 / 式: VIB |
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分子量 | 理論値: 265.355 Da |
Chemical component information | ![]() ChemComp-VIB: |
-実験情報
-構造解析
手法 | クライオ電子顕微鏡法 |
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![]() | 単粒子再構成法 |
試料の集合状態 | particle |
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試料調製
緩衝液 | pH: 8 |
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凍結 | 凍結剤: ETHANE |
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電子顕微鏡法
顕微鏡 | FEI TITAN KRIOS |
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撮影 | フィルム・検出器のモデル: GATAN K3 (6k x 4k) / 平均電子線量: 88.0 e/Å2 |
電子線 | 加速電圧: 300 kV / 電子線源: ![]() |
電子光学系 | 照射モード: FLOOD BEAM / 撮影モード: BRIGHT FIELD / 最大 デフォーカス(公称値): 2.0 µm / 最小 デフォーカス(公称値): 0.5 µm |
実験機器 | ![]() モデル: Titan Krios / 画像提供: FEI Company |