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基本情報
登録情報 | データベース: PDB / ID: 8sc1 | ||||||||||||||||||||||||||||||||||||||||||||||||||||||
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タイトル | Human OCT1 (Apo) in inward-open conformation | ||||||||||||||||||||||||||||||||||||||||||||||||||||||
![]() | Solute carrier family 22 member 1 | ||||||||||||||||||||||||||||||||||||||||||||||||||||||
![]() | TRANSPORT PROTEIN / membrane protein / MFS / drug transporter | ||||||||||||||||||||||||||||||||||||||||||||||||||||||
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 / toxin transmembrane transporter activity / norepinephrine:sodium symporter activity / prostaglandin transport / norepinephrine 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 / Na+/Cl- dependent neurotransmitter transporters / Ciprofloxacin ADME / cellular detoxification / xenobiotic transport / neurotransmitter transport / xenobiotic transmembrane transporter activity / lateral plasma membrane / 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 | 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: 2.92 Å | ||||||||||||||||||||||||||||||||||||||||||||||||||||||
![]() | Zeng, Y.C. / Sobti, M. / Stewart, A.G. | ||||||||||||||||||||||||||||||||||||||||||||||||||||||
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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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 | ![]() | 98.1 KB | 表示 | ![]() |
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PDB形式 | ![]() | 72.5 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 | ![]() 40334MC ![]() 8sc2C ![]() 8sc3C ![]() 8sc4C ![]() 8sc6C 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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1 |
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要素
#1: タンパク質 | 分子量: 61200.664 Da / 分子数: 1 / 由来タイプ: 組換発現 / 由来: (組換発現) ![]() ![]() |
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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 OCT1 / タイプ: COMPLEX / Entity ID: all / 由来: RECOMBINANT |
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由来(天然) | 生物種: ![]() |
由来(組換発現) | 生物種: ![]() |
緩衝液 | pH: 8 |
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 |
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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: FEI TITAN KRIOS |
電子銃 | 電子線源: ![]() |
電子レンズ | モード: BRIGHT FIELD / 最大 デフォーカス(公称値): 2000 nm / 最小 デフォーカス(公称値): 500 nm |
撮影 | 電子線照射量: 88 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 | 名称: PHENIX / カテゴリ: モデル精密化 |
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CTF補正 | タイプ: PHASE FLIPPING ONLY |
3次元再構成 | 解像度: 2.92 Å / 解像度の算出法: FSC 0.143 CUT-OFF / 粒子像の数: 1398918 / 対称性のタイプ: POINT |